PLXS / Plexus Corp. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Plexus Corp.
US ˙ NasdaqGS ˙ US7291321005

Mga Batayang Estadistika
LEI 549300W7HCBI5YT25I79
CIK 785786
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Plexus Corp.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 1, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 28, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001

August 1, 2025 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended Jun 28, Mar 29, Jun 29, 2025 2025 2024 Operating income, as reported $ 149,259 $ 95,651 $ 113,874 Restructuring and other charges 4,683 4,683 20,257 Accelerated stock-based compensation (1) + — + — + 892 Adjus

July 23, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 23, 2025 PLEXUS CORP. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 23, 2025 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

July 23, 2025 EX-99.1

Q3F25 Results

Plexus Announces Fiscal Third Quarter Financial Results NEENAH, WI – July 23, 2025 - Plexus Corp.

June 20, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 [ ] TRANSITION REPORT PURSUANT TO SECTION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from…………………………to……………………….. Commission file number………..001-14423………… A. Ful

May 28, 2025 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2024 Introduction This Conflict Minerals Report (the "Report") of Plexus Corp. ("Plexus," the "Company," "we," "us," or "our") has been prepared by management for calendar year 2024 under the Securities Exchange Act of

May 28, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Commission File Number) One Plexus Way Neenah, Wisconsin 54957 (Address of principal executive offices) (Zip Code) Angelo M. Ninivaggi Executive Vice Pres

May 14, 2025 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2025 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number)

May 2, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 29, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 00

May 2, 2025 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Mar 29, Dec 28, Mar 30, 2025 2024 2024 Operating income, as reported $ 95,651 $ 46,860 $ 74,628 Restructuring and other charges + 4,683 + 4,683 + 11,038 Adjusted operating income 100,334 51,543 85,666 x 2 x 4

April 23, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 23, 2025 PLEXUS CORP. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 23, 2025 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

April 23, 2025 EX-99.1

Q2F25 Results

Plexus Announces Fiscal Second Quarter Financial Results NEENAH, WI – April 23, 2025 - Plexus Corp.

February 12, 2025 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 11, 2025 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

January 31, 2025 EX-10.1

Form of Plexus Corp. Variable Incentive Compensation Plan - Plexus Leadership Team under the Plexus Corp. 2024 Omnibus Incentive Plan*.

PLEXUS CORP. FISCAL [] VARIABLE INCENTIVE COMPENSATION PLAN UNDER THE 2024 OMNIBUS INCENTIVE PLAN PLEXUS OFFICERS I.PLAN OBJECTIVE The primary objective of this Variable Incentive Compensation Plan is to reward results delivered by Participants and is designed to assist Plexus Corp. in attracting, retaining and motivating highly qualified and talented executives. The Awards under this Plan are con

January 31, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 28, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number

January 31, 2025 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Dec 28, Sep 28, Dec 30, 2024 2024 2023 Operating income, as reported $ 46,860 $ 167,732 $ 45,158 Restructuring and other charges 4,683 20,257 — Accelerated stock-based compensation (1) + — + 5,063 + — Adj

January 22, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 22, 2025 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

January 22, 2025 EX-99.1

Q1F25 Results

Plexus Announces Fiscal First Quarter Financial Results NEENAH, WI – Jan. 22, 2025 - Plexus Corp. (NASDAQ: PLXS) today announced financial results for our fiscal first quarter ended December 28, 2024, and guidance for our fiscal second quarter ending March 29, 2025. •Reports fiscal first quarter 2025 revenue of $976 million, GAAP operating margin of 4.8% and GAAP diluted EPS of $1.34. •Reports fis

December 13, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒        Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

December 13, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒        Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted

November 15, 2024 EX-19

Insider Trading and Related Policies.

INSIDER TRADING POLICY 1.PURPOSE By law, employees and directors of publicly-traded companies such as Plexus Corp. (referred to in this policy, along with its subsidiaries and affiliates, as “Plexus”) may not purchase or sell Plexus Securities, or securities of other publicly-traded companies, when they are aware of Material Non-Public Information. Employees and directors of Plexus also may not di

November 15, 2024 EX-21

List of Subsidiaries.

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2024 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited UK - Scotland Plexus Corp. Limited UK - Scotland Plexus Corp. Services (UK) Limited UK - Scotland Plexus Deutschland GmbH Germany Plexus

November 15, 2024 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended September 28, September 30, October 1, 2024 2023 2022 Operating income, as reported $ 167,732 $ 195,820 $ 178,185 Restructuring and other charges 20,257 23,094 2,021 Accelerated stock-based compensation (1) 5,063 — — Adjusted operating income 1

November 15, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 28, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-14

October 23, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

October 23, 2024 EX-99.1

Q4F24 Results

Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2024 Financial Results NEENAH, WI – October 23, 2024 - Plexus Corp.

August 16, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2024 PLEXUS CORP. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numb

August 2, 2024 EX-10.3

Form of Restricted Stock Unit Agreemen

PLEXUS CORP. 2024 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT TO: %%FIRSTNAME%-% %%LASTNAME%-% DATE: %%OPTIONDATE,’Month DD, YYYY’%-% In order to provide additional incentive through stock ownership for certain officers and key employees of Plexus Corp. (the "Corporation") and its subsidiaries, you (the "Grantee") are hereby granted a restricted stock unit award ("Award") effective as o

August 2, 2024 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended Jun 29, Mar 30, Jul 1, 2024 2024 2023 Operating income, as reported $ 113,874 $ 74,628 $ 142,487 Restructuring and impairment charges 20,257 11,038 23,094 Accelerated stock-based compensation (1) + 892 + — + —

August 2, 2024 EX-10.4

Form of Director Restricted Stock Unit Agreemen

PLEXUS CORP. 2024 OMNIBUS INCENTIVE PLAN DIRECTOR RESTRICTED STOCK UNIT AWARD AGREEMENT TO: %%FIRSTNAMEMIDDLENAMELASTNAME%-% DATE: %%OPTIONDATE,'Month DD, YYYY'%-% As a non-employee member of the Board of Directors (the “Board”) of Plexus Corp. (the “Corporation”), you have been awarded under the Plexus Corp. 2024 Omnibus Incentive Plan (the “Plan”), Restricted Stock Units (as described in the Pla

August 2, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 29, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001

August 2, 2024 EX-10.1

Form of Performance Stock Unit Agreement (Economic Retur

PLEXUS CORP. 2024 OMNIBUS INCENTIVE PLAN PERFORMANCE STOCK UNIT AGREEMENT (ECONOMIC RETURN) TO: %%FIRSTNAMEMIDDLENAMELASTNAME%-% DATE: %%OPTIONDATE,'Month DD, YYYY'%-% In order to provide additional incentive through stock ownership for certain officers and key employees of Plexus Corp. (the “Corporation”) and its subsidiaries, you (the “Grantee”) are hereby granted a performance stock unit award

August 2, 2024 EX-10.2

Form of Performance Stock Unit Agreement (Total Shareholder Return

PLEXUS CORP. 2024 OMNIBUS INCENTIVE PLAN PERFORMANCE STOCK UNIT AGREEMENT (TOTAL SHAREHOLDER RETURN) TO: %%FIRSTNAMEMIDDLENAMELASTNAME%-% DATE: %%OPTIONDATE,'Month DD, YYYY'%-% In order to provide additional incentive through stock ownership for certain officers and key employees of Plexus Corp. (the “Corporation”) and its subsidiaries, you (the “Grantee”) are hereby granted a performance stock un

July 24, 2024 EX-99.1

Q3F24 Results

Plexus Announces Fiscal Third Quarter Financial Results NEENAH, WI – July 24, 2024 - Plexus Corp.

July 24, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 24, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

June 21, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 [ ] TRANSITION REPORT PURSUANT TO SECTION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from…………………………to……………………….. Commission file number………..001-14423………… A. Ful

June 5, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 5, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number)

June 5, 2024 EX-10.1

Retirement and Transition Agreement by and between Plexus Corp. and Steven J. Frisch, dated May 31, 2024.

Retirement Agreement DATE: May 31, 2024 TO: Steven Frisch This agreement sets forth the consideration Plexus Corp.

May 24, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Commission File Number) One Plexus Way Neenah, Wisconsin 54957 (Address of principal executive offices) (Zip Code) Angelo M. Ninivaggi Executive Vice Pres

May 24, 2024 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2023 Introduction This Conflict Minerals Report (the "Report") of Plexus Corp. ("Plexus," the "Company," "we," "us," or "our") has been prepared by management for calendar year 2023 under the Securities Exchange Act of

May 3, 2024 S-8

As filed with the Securities and Exchange Commission on May 3, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PLEXUS CORP. (Exact name of registrant as spe

Registration No. 333- As filed with the Securities and Exchange Commission on May 3, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 39-1344447 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Iden

May 3, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Plexus Corp.

May 3, 2024 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Mar 30, Dec 30, Apr 1, 2024 2023 2023 Operating income, as reported $ 74,628 $ 45,158 $ 114,283 Restructuring and impairment charges + 11,038 + — + — Adjusted operating income 85,666 45,158 114,283 x 2 x 4 x 2

May 3, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 00

April 24, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 24, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

April 24, 2024 EX-99.1

Q2F24 Results

Plexus Announces Fiscal Second Quarter Financial Results NEENAH, WI – April 24, 2024 - Plexus Corp.

February 15, 2024 EX-10.1

Plexus Corp. 2024 Omnibus Incentive Plan.

PLEXUS CORP. 2024 OMNIBUS INCENTIVE PLAN 1. Introduction. (a) Purposes. The purposes of the 2024 Omnibus Incentive Plan are to provide a means to attract and retain talented personnel and to provide to participating directors, officers and other key employees long-term incentives for high levels of performance and for successful efforts to improve the financial performance of the Corporation. Thes

February 15, 2024 EX-3.1

Amended and Restated Bylaws of Plexus Corp., as amended through February 14, 2024

AMENDED AND RESTATED BYLAWS OF PLEXUS CORP. (a Wisconsin corporation) (as amended through February 14, 2024) ARTICLE I. OFFICES 1.01. Principal and Business Offices. The corporation may have such principal and other business offices, either within or without the State of Wisconsin, as the Board of Directors may designate or as the business of the corporation may require from time to time. 1.02. Re

February 15, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

February 13, 2024 SC 13G/A

PLXS / Plexus Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01712-plexuscorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 16)* Name of issuer: Plexus Corp Title of Class of Securities: Common Stock CUSIP Number: 729132100 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule p

February 9, 2024 SC 13G/A

PLXS / Plexus Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8 )* Plexus Corp (Name of Issuer) Common Stock (Title of Class of Securities) 729132100 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule i

February 2, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number

February 2, 2024 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Dec 30, Sep 30, Dec 31, 2023 2023 2022 Operating income, as reported $ 45,158 $ 195,820 $ 57,341 Restructuring and impairment charges + — + 23,094 + — Adjusted operating income 45,158 218,914 57,341 x 4 x

January 24, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

January 24, 2024 EX-99.1

Q1F24 Preliminary

Plexus Announces Fiscal First Quarter Financial Results NEENAH, WI – January 24, 2024 - Plexus Corp.

January 16, 2024 EX-99.1

Plexus Announces Preliminary Fiscal First Quarter 2024 Results and Additional Share Repurchase Program

Plexus Announces Preliminary Fiscal First Quarter 2024 Results and Additional Share Repurchase Program NEENAH, WI – January 16, 2024 - Plexus Corp.

January 16, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2024 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

December 15, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☒ Filed by the Registrant ☐ Filed by a Party other than the Registrant Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

December 15, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒        Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted

November 17, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-14

November 17, 2023 EX-97

Plexus Corp. Compensation Recovery Policy

Exhibit 97 Plexus Corp. Compensation Recovery Policy Effective November 16, 2023 1.Purpose. The purpose of this Compensation Recovery Policy (this “Policy”) is to describe the circumstances under which Plexus Corp. (the “Company”) is required to recover compensation paid to certain employees. Any references in compensation plans, agreements, equity awards or other policies to the Company’s “recoup

November 17, 2023 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended September 30, October 1, October 2, 2023 2022 2021 Operating income, as reported $ 195,820 $ 178,185 $ 176,268 Restructuring and other charges 23,094 2,021 3,267 Adjusted operating income 218,914 180,206 179,535 Tax rate 13.0 % 13.0 % 13.0 % Ad

November 17, 2023 EX-21

List of Subsidiaries.

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2023 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited UK - Scotland Plexus Corp. Limited UK - Scotland Plexus Corp. Services (UK) Limited UK - Scotland Plexus Deutschland GmbH Germany Plexus

October 25, 2023 EX-99.1

Q4F23 Results

Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2023 Financial Results NEENAH, WI – October 25, 2023 - Plexus Corp.

October 25, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

August 4, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 1, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-

August 4, 2023 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended Jul 1, Apr 1, Jul 2, 2023 2023 2022 Operating income, as reported $ 142,487 $ 114,283 $ 115,871 Restructuring and other charges + 23,094 + — + 2,021 Adjusted operating income 165,581 114,283 117,892 ÷ 3 x 2 ÷

July 26, 2023 EX-99.1

Q3F23 Results

Plexus Announces Fiscal Third Quarter Financial Results NEENAH, WI – July 26, 2023 - Plexus Corp.

July 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2023 PLEXUS CORP. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

June 21, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 [ ] TRANSITION REPORT PURSUANT TO SECTION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from…………………………to……………………….. Commission file number………..001-14423………… A. Ful

May 31, 2023 8-K/A

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A AMENDMENT NO. 1 TO CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation

May 19, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Commission File Number) One Plexus Way Neenah, Wisconsin 54957 (Address of principal executive offices) (Zip Code) Angelo M. Ninivaggi Executive Vice Pres

May 19, 2023 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EX-1.01 2 a2022exhibit101cmr.htm EX-1.01 EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2022 Introduction This Conflict Minerals Report (the "Report") of Plexus Corp. ("Plexus," the "Company," "we," "us," or "our") has been prepared for calendar year 2022 under the

May 18, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 18, 2023 PLEXUS CORP. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 18, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number)

April 26, 2023 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Apr 1, Dec 31, Apr 2, 2023 2022 2022 Operating income, as reported $ 114,283 $ 57,341 $ 66,310 Restructuring and impairment charges + — + — + 2,021 Adjusted operating income 114,283 57,341 68,331 x 2 x 4 x 2 A

April 26, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 1, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001

April 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 PLEXUS CORP. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

April 26, 2023 EX-99.1

Q2F23 Results

Plexus Announces Fiscal Second Quarter Financial Results NEENAH, WI – April 26, 2023 - Plexus Corp.

February 16, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

February 16, 2023 EX-3.1

Amended and Restated Bylaws of Plexus Corp., as amended through February 15, 2023

AMENDED AND RESTATED BYLAWS OF PLEXUS CORP. (a Wisconsin corporation) (as amended through 02/15/2023) 4890-8881-1341.4 Article IOFFICES 1.01.Principal and Business Offices. The corporation may have such principal and other business offices, either within or without the State of Wisconsin, as the Board of Directors may designate or as the business of the corporation may require from time to time. 1

February 10, 2023 SC 13G/A

PLXS / Plexus Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* Plexus Corp (Name of Issuer) Common Stock (Title of Class of Securities) 729132100 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designa

February 9, 2023 SC 13G/A

PLXS / Plexus Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01684-plexuscorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 15)* Name of issuer: Plexus Corp. Title of Class of Securities: Common Stock CUSIP Number: 729132100 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule

February 3, 2023 EX-10.2

Form of Performance Stock Unit Agreement (Total Shareholder Return)

PLEXUS CORP. PERFORMANCE STOCK UNIT AGREEMENT (TOTAL SHAREHOLDER RETURN) TO: %%FIRSTNAMEMIDDLENAMELASTNAME%-% DATE: %%OPTIONDATE,'Month DD, YYYY'%-% In order to provide additional incentive through stock ownership for certain officers and key employees of Plexus Corp. (the “Corporation”) and its subsidiaries, you (the “Grantee”) are hereby granted a performance stock unit award (“Award”) effective

February 3, 2023 EX-10.1

Form of Performance Stock Unit Agreement (Economic Return)

EX-10.1 2 erformofperformancestockun.htm EX-10.1 PLEXUS CORP. PERFORMANCE STOCK UNIT AGREEMENT (ECONOMIC RETURN) TO: %%FIRSTNAMEMIDDLENAMELASTNAME%-% DATE: %%OPTIONDATE,'Month DD, YYYY'%-% In order to provide additional incentive through stock ownership for certain officers and key employees of Plexus Corp. (the “Corporation”) and its subsidiaries, you (the “Grantee”) are hereby granted a performa

February 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number

February 3, 2023 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Dec 31, Oct 1, Jan 1, 2022 2022 2022 Operating income, as reported $ 57,341 $ 178,185 $ 30,473 Restructuring and impairment charges + — + 2,021 + 2,021 Adjusted operating income 57,341 180,206 32,494 x 4

January 25, 2023 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Dec 31, 2022 Oct 1, 2022 Jan 1, 2022 Revenue $ 1,093,925 $ 1,123,848 $ 817,456 Gross profit 101,199 107,105 69,996 Operating income 57,341 62,314 30,473 Net income 42,190 50,457 23,42

Plexus Announces Fiscal First Quarter Financial Results NEENAH, WI – January 25, 2023 - Plexus Corp.

January 25, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 25, 2023 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

December 16, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? ??????Filed by a Party other than the Registrant ? Check the appropriate box: ?? Preliminary Proxy Statement ?? Confidential, for Use of the Commission Only (as permitted by

December 16, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a Party other than the Registrant Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

November 18, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 1, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-14423

November 18, 2022 EX-21

List of Subsidiaries.

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2022 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited UK - Scotland Plexus Corp. Limited UK - Scotland Plexus Corp. Services (UK) Limited UK - Scotland Plexus Deutschland GmbH Germany Plexus

November 18, 2022 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended October 1, October 2, October 3, 2022 2021 2020 Operating income, as reported $ 178,185 $ 176,268 $ 153,372 Restructuring and impairment charges 2,021 3,267 6,003 Adjusted operating income 180,206 179,535 159,375 Tax rate 13.0 % 13.0 % 14.0 % A

October 26, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2022 PLEXUS CORP. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

October 26, 2022 EX-99.1

Quarterly & Annual Comparison Three Months Ended Twelve Months Ended (in thousands, except EPS) Oct 1, 2022 Jul 2, 2022 Oct 2, 2021 Oct 1, 2022 Oct 2, 2021 Revenue $ 1,123,848 $ 981,341 $ 843,238 $ 3,811,368 $ 3,368,865 Gross profit 107,105 93,618 78

Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2022 Financial Results NEENAH, WI – October 26, 2022 - Plexus Corp.

August 18, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 17, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numb

August 5, 2022 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended Jul 2, Apr 2, Jul 3, 2022 2022 2021 Operating income, as reported $ 115,871 $ 66,310 $ 133,926 Restructuring and impairment charges + 2,021 + 2,021 + 3,267 Adjusted operating income 117,892 68,331 137,193 ? 3

August 5, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 2, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-

July 27, 2022 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Jul 2, 2022 Apr 2, 2022 Jul 3, 2021 Revenue $ 981,341 $ 888,723 $ 814,387 Gross profit 93,618 76,510 74,050 Operating income 49,561 35,837 36,373 Net income 37,494 26,869 27,609 Dilut

Plexus Announces Fiscal Third Quarter Financial Results NEENAH, WI ? July 27, 2022 - Plexus Corp.

July 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

June 22, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 [ ] TRANSITION REPORT PURSUANT TO SECTION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11?K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from??????????to?????????.. Commission file number???..001-14423???? A. Ful

June 13, 2022 EX-10.1

Amended and Restated Credit Agreement, dated June 9, 2022, by and among Plexus Corp., certain of its subsidiaries from time to time party thereto as borrowers, the lenders from time to time party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent.

EXECUTION VERSION 280685873v.17 Deal CUSIP 72913HAD9 Revolving Loan CUSIP 72913HAG20 AMENDED AND RESTATED CREDIT AGREEMENT DATED AS OF JUNE 9, 2022 AMONG PLEXUS CORP., THE SUBSIDIARY BORROWERS PARTY HERETO, THE LENDERS, JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT U.S. BANK NATIONAL ASSOCIATION, AS SYNDICATION AGENT PNC BANK, NATIONAL ASSOCIATION, BANK OF AMERICA, N.A., MUFG BANK, LTD., HSBC

June 13, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number)

May 26, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 (State or other jurisdiction of incorporation) (Commission File Number) One Plexus Way Neenah, Wisconsin 54957 (Address of principal executive offices) (Zip Code) Angelo M. Ninivaggi Executive Vice Pres

May 26, 2022 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2021 Introduction This Conflict Minerals Report (the "Report") of Plexus Corp. ("Plexus," the "Company," "we," "us," or "our") has been prepared for calendar year 2021 under the Securities Exchange Act of 1934 (the “Ac

May 6, 2022 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Apr 2, Jan 1, Apr 3, 2022 2022 2021 Operating income, as reported $ 66,310 $ 30,473 $ 97,553 Restructuring and impairment charges + 2,021 + 2,021 + 2,029 Adjusted operating income 68,331 32,494 99,582 x 2 x 4

May 6, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 2, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001

April 27, 2022 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Apr 2, 2022 Jan 1, 2022 Apr 3, 2021 Revenue $ 888,723 $ 817,456 $ 880,885 Gross profit 76,510 69,996 91,002 Operating income 35,837 30,473 50,687 Net income 26,869 23,423 41,763 Dilut

Plexus Announces Fiscal Second Quarter Financial Results NEENAH, WI ? April 27, 2022 - Plexus Corp.

April 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

March 7, 2022 EX-99.1

Plexus Confirms Fiscal Second Quarter Guidance

Plexus Confirms Fiscal Second Quarter Guidance NEENAH, WI ? March 7, 2022 - Plexus Corp.

March 7, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 7, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

February 18, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 16, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

February 10, 2022 SC 13G/A

PLXS / Plexus Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 14)* Name of issuer: Plexus Corp. Title of Class of Securities: Common Stock CUSIP Number: 729132100 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??Rule

February 8, 2022 SC 13G/A

PLXS / Plexus Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Plexus Corp (Name of Issuer) Common Stock (Title of Class of Securities) 729132100 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule i

February 4, 2022 EX-10.1

Suspension of Rights under Credit Agreement relating to LIBOR.

SUSPENSION OF RIGHTS AGREEMENT To: JPMorgan Chase Bank, N.A., as Administrative Agent From: Plexus Corp. Date: December 1, 2021 Ladies & Gentlemen Reference is made to that certain Credit Agreement, dated as of May 15, 2019, among Plexus Corp. (the ?Company?), the Subsidiary Borrowers from time to time party thereto (together with the Company, the ?Borrowers?), the Lenders from time to time party

February 4, 2022 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Jan 2, Oct 2, Jan 2, 2022 2021 2021 Operating income, as reported $ 30,473 $ 176,268 $ 46,866 Restructuring and other charges + 2,021 + 3,267 + ? Adjusted operating income 32,494 179,535 46,866 x 4 x 4 Ad

February 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 1, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0

February 4, 2022 EX-10.2

Summary of Directors' Compensation (1/22).*

PLEXUS CORP. ANNUAL BOARD OF DIRECTORS AND COMMITTEE COMPENSATION Effective January 1, 2022 BOARD MEMBERS AND BOARD LEADERSHIP Chairman Retainer $ 250,000.00 USD Board Member Retainer (all directors) $ 90,000.00 USD Lead Director Retainer $ 120,000.00 USD COMMITTEE MEMBERS AUDIT COMMITTEE COMPENSATION & LEADERSHIP DEVELOPMENT COMMITTEE (?COMPENSATION COMMITTEE?) NOMINATING & CORPORATE GOVERNANCE C

January 26, 2022 EX-99.2

Plexus Names Steve Frisch President and Chief Strategy Officer and Oliver Mihm Chief Operating Officer

Plexus Names Steve Frisch President and Chief Strategy Officer and Oliver Mihm Chief Operating Officer NEENAH, WI ? January 26, 2022 - Plexus Corp.

January 26, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 26, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

January 26, 2022 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Jan 1, 2022 Oct 2, 2021 Jan 2, 2021 Revenue $ 817,456 $ 843,238 $ 830,355 Gross profit 69,996 78,967 79,277 Operating income 30,473 42,342 46,866 Net income 23,423 33,341 36,199 Dilut

EX-99.1 2 plxsf22q1earningsrelease-e.htm EX-99.1 Plexus Announces Fiscal First Quarter Financial Results NEENAH, WI – January 26, 2022 - Plexus Corp. (NASDAQ: PLXS) today announced financial results for our fiscal first quarter ended January 1, 2022, and guidance for our fiscal second quarter ending April 2, 2022. •Reports fiscal first quarter revenue of $817 million, GAAP operating margin of 3.7%

January 26, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a Party other than the Registrant Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

January 18, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 18, 2022 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

January 18, 2022 EX-99.1

Plexus Announces Preliminary Fiscal First Quarter Results

Plexus Announces Preliminary Fiscal First Quarter Results NEENAH, WI ? January 18, 2022 - Plexus Corp.

December 17, 2021 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

December 17, 2021 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by

November 19, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 2, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-14423

November 19, 2021 EX-21

List of Subsidiaries.

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2021 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited Scotland Plexus Corp. Limited Scotland Plexus Corp. Services (UK) Limited Scotland Plexus Deutschland GmbH Germany Plexus Electronica S.

November 19, 2021 EX-4.3

Description of Common Stock

Exhibit 4.3 DESCRIPTION OF COMMON STOCK The following summary highlights selected information about the common stock of Plexus Corp. (?Plexus,? the ?Company,? ?we,? ?us,? or ?our?). This summary does not purport to be exhaustive and is qualified in its entirety by reference to applicable Wisconsin law, as well as to our Articles and our Amended and Restated Bylaws. The Plexus Restated Articles of

November 19, 2021 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements.

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended October 2, October 3, September 28, 2021 2020 2019 Operating income, as reported $ 176,268 $ 153,372 $ 142,055 Restructuring and other charges 3,267 6,003 1,678 Adjusted operating income 179,535 159,375 143,733 Tax rate 13.0 % 14.0 % 16.0 % Adj

October 27, 2021 EX-99.1

Quarterly & Annual Comparison Three Months Ended Twelve Months Ended (in thousands, except EPS) Oct 2, 2021 Jul 3, 2021 Oct 3, 2020 Oct 2, 2021 Oct 3, 2020 Revenue $ 843,238 $ 814,387 $ 913,227 $ 3,368,865 $ 3,390,394 Gross profit 78,967 74,050 89,19

Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2021 Financial Results NEENAH, WI ? October 27, 2021 - Plexus Corp.

October 27, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 27, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

August 13, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numb

August 6, 2021 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended Jul 3, Apr 3, July 4, 2021 2021 2020 Operating income, as reported $ 133,926 $ 97,553 $ 102,996 Restructuring and impairment charges + 3,267 + 2,029 + 6,003 Adjusted operating income 137,193 99,582 108,999 ? 3

August 6, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 3, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-

August 2, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

July 21, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 21, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

July 21, 2021 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Jul 3, 2021 Apr 3, 2021 Jul 4, 2020 Revenue $ 814,387 $ 880,885 $ 857,394 Gross profit 74,050 91,002 82,881 Operating income 36,373 50,687 45,853 Net income 27,609 41,763 35,842 Dilut

Plexus Announces Fiscal Third Quarter Financial Results ?Fiscal third quarter 2021 revenue of $814 million ?GAAP diluted EPS of $0.

June 21, 2021 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 [ ] TRANSITION REPORT PURSUANT TO SECTION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11?K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from??????????to?????????.. Commission file number???..001-14423???? A. Ful

June 7, 2021 EX-99.1

Plexus to Provide Financial Update Regarding the Impacts of Malaysia COVID-19 Restrictions at Stifel Investor Conference

Plexus to Provide Financial Update Regarding the Impacts of Malaysia COVID-19 Restrictions at Stifel Investor Conference NEENAH, WI ? June 07, 2021 - Plexus (NASDAQ: PLXS) intends to provide an update during a live webcast on Tuesday, June 8, 2021 at Stifel?s 2021 Virtual Cross Sector Insight Conference regarding the impact of the Malaysian government?s COVID-19 workforce curtailment as well as other evolving dynamics on its fiscal third quarter results and future outlook.

June 7, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number)

May 24, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 24, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number)

May 24, 2021 EX-99.1

Plexus Provides Financial Update Due to COVID-19 Restrictions in Malaysia and Announces Participation in Stifel Investor Conference

Plexus Provides Financial Update Due to COVID-19 Restrictions in Malaysia and Announces Participation in Stifel Investor Conference NEENAH, WI ? May 24, 2021 - Plexus (NASDAQ: PLXS) announced today that the Malaysian government mandated a two-week workforce curtailment for all manufacturers in the region.

May 21, 2021 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2020 Introduction This Conflict Minerals Report (the "Report") of Plexus Corp. ("Plexus," the "Company," "we," "us," or "our") has been prepared for calendar year 2020 under the Securities Exchange Act of 1934 (the “Ac

May 21, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) One Plexus Way, Neenah, WI 54957 (Address of principal executive offices) (Zip Cod

May 7, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 3, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001

May 7, 2021 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Apr 3, Jan 2, Apr 4, 2021 2021 2020 Operating income, as reported $ 97,553 $ 46,866 $ 57,143 Restructuring and other charges + 2,029 + ? + 6,003 Adjusted operating income 99,582 46,866 63,146 x 2 x 4 x 2 Adjus

April 21, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

April 21, 2021 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Apr 3, 2021 Jan 2, 2021 Apr 4, 2020 Revenue $ 880,885 $ 830,355 $ 767,364 Gross profit 91,002 79,277 61,445 Operating income 50,687 46,866 17,209 Net income 41,763 36,199 12,926 Dilut

Plexus Announces Fiscal Second Quarter Financial Results ?Fiscal second quarter 2021 revenue of $881 million ?GAAP diluted EPS of $1.

February 18, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 17, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

February 16, 2021 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* Plexus Corp (Name of Issuer) Common Stock (Title of Class of Securities) 729132100 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule i

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 13)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 13)* Name of issuer: Plexus Corp. Title of Class of Securities: Common Stock CUSIP Number: 729132100 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

February 5, 2021 EX-10.1

(iii) Form of Performance Stock Unit Agreement.

EX-10.1 2 plxsf2110-qq1exhibit101.htm EX-10.1 Exhibit 10.1 PLEXUS CORP. PERFORMANCE STOCK UNIT AGREEMENT (Total Shareholder Return) TO: <> <> DATE: <> In order to provide additional incentive through stock ownership for certain officers and key employees of Plexus Corp. (the “Corporation”) and its subsidiaries, you (the “Grantee”) are hereby granted a performance stock unit award (“Award”) effecti

February 5, 2021 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Jan 2, Oct 3, Jan 4, 2021 2020 2020 Operating income, as reported $ 46,866 $ 153,372 $ 39,934 Restructuring and other charges + — + 6,003 + — Adjusted operating income 46,866 159,375 39,934 x 4 x 4 Adjust

February 5, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 2, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0

January 20, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 20, 2021 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

January 20, 2021 EX-99.1

Quarterly Comparison Three Months Ended (in thousands, except EPS) Jan 2, 2021 Oct 3, 2020 Jan 4, 2020 Revenue $ 830,355 $ 913,227 $ 852,409 Gross profit 79,277 89,190 79,190 Operating income 46,866 50,376 39,934 Net income 36,199 37,705 31,006 Dilut

EX-99.1 2 plxsf21q1earningsrelease-e.htm EX-99.1 Plexus Announces Fiscal First Quarter Financial Results •Fiscal first quarter 2021 revenue of $830 million •GAAP diluted EPS of $1.23 •Initiates fiscal second quarter 2021 revenue guidance of $860 to $900 million with GAAP diluted EPS of $1.17 to $1.32 NEENAH, WI – January 20, 2021 - Plexus (NASDAQ: PLXS) today announced financial results for our fi

December 18, 2020 DEFA14A

- DEFA14A

DEFA14A 1 nc10017186x2defa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only

December 18, 2020 DEF 14A

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by

November 20, 2020 EX-4.3

Description of Common Stock

Exhibit 4.3 DESCRIPTION OF COMMON STOCK The following summary highlights selected information about the common stock of Plexus Corp. (“Plexus,” the “Company,” “we,” “us,” or “our”). This summary does not purport to be exhaustive and is qualified in its entirety by reference to applicable Wisconsin law, as well as to our Articles and our Amended and Restated Bylaws. The Plexus Restated Articles of

November 20, 2020 EX-10.3(K)

Amendment No.11 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and MUFG Bank Ltd. (f/k/a The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch), as the Purchaser, dated as of September 10, 2020.

Exhibit 10.3 (k) AMENDMENT NO. 11 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 11 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of September 10, 2020 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (“Plexus”), Plexus Intl. Sales & Logistics, LLC, a Delaware limited liabil

November 20, 2020 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

EX-99.1 10 plxsf2010-kexhibit991.htm EX-99.1 Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended October 3, September 28, September 29, 2020 2019 2018 Operating income, as reported $ 153,372 $ 142,055 $ 118,283 Restructuring and other charges 6,003 1,678 — One-time employee bonus — — 13,512 Adju

November 20, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 3, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-14423

November 20, 2020 EX-21

List of Subsidiaries

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2020 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited Scotland Plexus Corp. Limited Scotland Plexus Corp. Services (UK) Limited Scotland Plexus Deutschland GmbH Germany Plexus Electronica S.

November 19, 2020 8-K

Regulation FD Disclosure, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 18, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

November 19, 2020 EX-3.1

Amended and Restated Bylaws of Plexus Corp., as amended through November 18, 2020

AMENDED AND RESTATED BYLAWS OF PLEXUS CORP. (a Wisconsin corporation) (as amended through 11/18/2020) ARTICLE I. OFFICES 1.01. Principal and Business Offices. The corporation may have such principal and other business offices, either within or without the State of Wisconsin, as the Board of Directors may designate or as the business of the corporation may require from time to time. 1.02. Registere

October 28, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

October 28, 2020 EX-99.1

Quarterly & Annual Comparison Three Months Ended Twelve Months Ended (in thousands, except EPS) Oct 3, 2020 Jul 4, 2020 Sept 28, 2019 Oct 3, 2020 Sept 28, 2019 Revenue $ 913,227 $ 857,394 $ 810,195 $ 3,390,394 $ 3,164,434 Gross profit 89,190 82,881 7

EX-99.1 2 plxsf20q4earningsrelea.htm EX-99.1 Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2020 Financial Results •Record fiscal fourth quarter revenue of $913 million and record fiscal 2020 revenue of $3.4 billion •Fiscal fourth quarter GAAP diluted EPS of $1.26, including $0.23 of stock based compensation expense •Initiates fiscal first quarter 2021 revenue guidance of $810 to $850 mill

August 14, 2020 EX-99.1

Plexus Announces $50 Million Share Repurchase Program

Plexus Announces $50 Million Share Repurchase Program NEENAH, WI – August 13, 2020 - Plexus (NASDAQ: PLXS) announced today that its Board of Directors has approved a new share repurchase program under which the Company is authorized to buy back up to $50 million of its common stock beginning upon expiration of the Company’s previous program.

August 14, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numb

August 7, 2020 EX-99.1

Reconciliation of ROIC to GAAP and economic return financial statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and economic return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended July 4, Apr 4, Jun 29, 2020 2020 2019 Operating income, as reported $ 102,996 $ 57,143 $ 104,528 Restructuring and impairment charges + 6,003 + 6,003 + — Adjusted operating income $ 108,999 $ 63,146 $ 104,528

August 7, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 4, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-

July 22, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 22, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

July 22, 2020 EX-99.2

Fiscal third quarter 2020 financial results July 23, 2020 PLEXUS CORP. Safe harbor and fair disclosure statement Any statements made during our call today and information included in the supporting material that is not historical in nature, such as s

plxsq3f20analystslides Fiscal third quarter 2020 financial results July 23, 2020 PLEXUS CORP.

July 22, 2020 EX-99.1

Quarterly Comparison Three Months Ended Jul 4, 2020 Apr 4, 2020 Jun 29, 2019 (in thousands, except EPS) Q3F20 Q2F20 Q3F19 Revenue $ 857,394 $ 767,364 $ 799,644 Gross profit 82,881 61,445 71,030 Operating income 45,853 17,209 34,403 Net income 35,842

EX-99.1 2 plxsq3f20earningsrelea.htm EX-99.1 Plexus Announces Fiscal Third Quarter Financial Results •Record quarterly revenue of $857 million for the fiscal third quarter of 2020 •GAAP diluted EPS of $1.20 •Initiates fiscal fourth quarter 2020 revenue guidance of $850 to $890 million with GAAP diluted EPS guidance of $1.05 to $1.20, excluding unforeseen impacts relating to COVID-19 NEENAH, WI – J

June 18, 2020 11-K

- 11-K

11-K 1 a2019form11-k.htm 11-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from…………………………to……………………….. Commission file n

May 20, 2020 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2019 Introduction This Conflict Minerals Report (the "Report") of Plexus Corp. ("Plexus," the "Company," "we," "us," or "our") has been prepared for calendar year 2019 under the Securities Exchange Act of 1934 (the “Ac

May 20, 2020 SD

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) One Plexus Way, Neenah, WI 54957 (Address of principal executive offices) (Zip Cod

May 8, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 4, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001

May 8, 2020 EX-99.1

Reconciliation of ROIC to GAAP and economic return financial statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and economic return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Apr 4, Jan 4, Mar 30, 2020 2020 2019 Operating income, as reported $ 57,143 $ 39,934 $ 70,125 Restructuring and impairment charges + 6,003 + — + — Adjusted operating income $ 63,146 $ 39,934 $ 70,125 x 2 x 4 x

April 30, 2020 EX-10.1

Amendment No. 1 to Credit Agreement, dated as of April 29, 2020, among Plexus Corp., the lenders party thereto and JPMorgan Chase Bank, N.A., as administrative agent.

EX-10.1 2 exhibit101amendmentno1.htm EXHIBIT 10.1 EXECUTION VERSION AMENDMENT NO. 1 Dated as of April 29, 2020 to CREDIT AGREEMENT Dated as of May 15, 2019 THIS AMENDMENT NO. 1 (this “Amendment”) is made as of April 29, 2020 by and among Plexus Corp., a Wisconsin corporation (the “Company”), the financial institutions listed on the signature pages hereof and JPMorgan Chase Bank, N.A., as Administr

April 30, 2020 EX-10.1 (A)

Exhibit A - Amendments to Existing Credit Agreement

Exhibit A Amendments to Existing Credit Agreement [Attached] EXECUTION COPYEXHIBIT A Deal CUSIP 72913HAD9 Revolving Loan CUSIP 72913HAE7 CREDIT AGREEMENT DATED AS OF MAY 15, 2019 AMONG PLEXUS CORP.

April 30, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

April 22, 2020 EX-99.2

Fiscal second quarter 2020 financial results April 23, 2020 PLEXUS CORP. Safe harbor and fair disclosure statement Any statements made during our call today and information included in the supporting material that is not historical in nature, such as

plxsq2f20analystslides Fiscal second quarter 2020 financial results April 23, 2020 PLEXUS CORP.

April 22, 2020 EX-99.1

Three Months Ended

Plexus Announces Fiscal Second Quarter Financial Results • Revenue of $767 million for the fiscal second quarter of 2020 • GAAP diluted EPS of $0.

April 22, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 22, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

April 6, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 2, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

March 24, 2020 EX-99.1

1

Plexus Provides Financial Outlook Update Due To Impact of COVID-19 Further Details To Be Provided at Plexus’ Fiscal Second Quarter Earnings Call NEENAH, WI - March 23, 2020 - Plexus (NASDAQ: PLXS) announced today an update to its fiscal second quarter revenue outlook due to evolving impacts related to the COVID-19 outbreak.

March 24, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 23, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numbe

March 2, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 2, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Number

March 2, 2020 EX-99.1

1

Plexus Provides Financial Outlook Update Due to COVID-19 Will Present Additional Information on Webcast from Raymond James Institutional Investors Conference NEENAH, WI - March 2, 2020 - Plexus (NASDAQ: PLXS) announced today an update to its fiscal second quarter revenue outlook due to evolving business and financial implications relating to the COVID-19 outbreak.

February 13, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 12, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Nu

February 12, 2020 SC 13G/A

PLXS / Plexus Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Plexus Corp Title of Class of Securities: Common Stock CUSIP Number: 729132100 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 1

February 12, 2020 SC 13G/A

PLXS / Plexus Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* PLEXUS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 729132100 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is

February 7, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 4, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0

February 7, 2020 EX-10.1

Amendment No.10 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and MUFG Bank Ltd. (f/k/a The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch), as the Purchaser, dated as of December 23, 2019.

Exhibit 10.1 AMENDMENT NO. 10 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 10 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of December 23, 2019 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (“Plexus”), Plexus Intl. Sales & Logistics, LLC, a Delaware limited liability c

February 7, 2020 EX-99.1

Reconciliation of ROIC to GAAP and economic return financial statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and economic return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Jan 4, Sept 28, Dec 29, 2020 2019 2018 Operating income, as reported $ 39,934 $ 142,055 $ 36,951 Restructuring costs + — + 1,678 + — Adjusted operating income $ 39,934 $ 143,733 $ 36,951 x 4 x 4 Adjusted

January 22, 2020 EX-99.1

Three Months Ended

EX-99.1 2 plxsf20q1earningsrelea.htm EXHIBIT 99.1 Plexus Announces Fiscal First Quarter Financial Results • Record quarterly revenue of $852 million during the fiscal first quarter of 2020 • GAAP diluted EPS of $1.03 • Non-GAAP adjusted diluted EPS of $1.00, excluding a net benefit of $0.03 per share related to special tax items • Initiates fiscal second quarter 2020 revenue guidance of $790 to $8

January 22, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 22, 2020 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

December 10, 2019 DEF 14A

PLXXF / Plexus Holdings PLC DEF 14A - - DEF 14A

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

December 10, 2019 DEFA14A

PLXXF / Plexus Holdings PLC DEFA14A - - DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

November 15, 2019 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 28, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-14

November 15, 2019 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended September 28, 2019 September 29, 2018 September 30, 2017 Operating income, as reported $ 142,055 $ 118,283 $ 129,908 Restructuring and other charges 1,678 — — One-time employee bonus — 13,512 — Adjusted operating income 143,733 131,795 129,908

November 15, 2019 EX-4.3

Description of Common Stock

Exhibit 4.3 DESCRIPTION OF COMMON STOCK The following summary highlights selected information about the common stock of Plexus Corp. (“Plexus,” the “Company,” “we,” “us,” or “our”). This summary does not purport to be exhaustive and is qualified in its entirety by reference to applicable Wisconsin law, as well as to our Articles and our Amended and Restated Bylaws. The Plexus Restated Articles of

November 15, 2019 EX-21

List of Subsidiaries

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2019 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited Scotland Plexus Corp. Limited Scotland Plexus Corp. Services (UK) Limited Scotland Plexus Deutschland GmbH Germany Plexus Electronica S.

October 23, 2019 EX-99.1

Three Months Ended

Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2019 Financial Results • Record fiscal fourth quarter revenue of $810 million and record fiscal 2019 revenue of $3.

October 23, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2019 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Num

August 20, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 20, 2019 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction of incorporation) (Commission File Numb

August 20, 2019 EX-99.1

Plexus Announces $50 Million Share Repurchase Program

Plexus Announces $50 Million Share Repurchase Program NEENAH, WI - August 20, 2019 - Plexus (NASDAQ: PLXS) announced today that its Board of Directors has approved a new share repurchase program under which the Company is authorized to repurchase up to $50 million of its common stock beginning upon expiration of the Company’s previous share repurchase program.

August 2, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 29, 2019 OR ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-14423 PLEXUS CORP. (Exact name of registrant

August 2, 2019 EX-10.1

First Amendment, dated as of June 25, 2019, to the Note Purchase Agreement, dated as of June 15, 2018, between Plexus Corp. and the Noteholders named therein relating to an aggregate of $150,000,000 in principal amount of 4.05% Series A Senior Notes, due June 15, 2025, and 4.22% Series B Senior Notes, due June 15, 2028.

Exhibit 10.1 EXECUTION VERSION PLEXUS CORP. FIRST AMENDMENT Dated as of June 25, 2019 to NOTE PURCHASE AGREEMENT Dated as of June 15, 2018 Re: 4.05% Series A Senior Notes due June 15, 2025 4.22% Series B Senior Notes due June 15, 2028 FIRST AMENDMENT TO NOTE AGREEMENT THIS FIRST AMENDMENT dated as of June 25, 2019 (the or this “First Amendment”) to the Note Purchase Agreement dated as of June 15,

August 2, 2019 EX-10.2

Amendment No.9 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and MUFG Bank Ltd. (f/k/a The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch), as the Purchaser, dated as of June 21, 2019.

EX-10.2 3 plxsf1910-qq3exhibit102.htm EXHIBIT 10.2 Exhibit 10.2 AMENDMENT NO. 9 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 9 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of June 21, 2019 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (“Plexus”), Plexus Intl. Sales & L

August 2, 2019 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended Jun 29, Mar 30, Jun 30, 2019 2019 2018 Operating income, as reported $ 104,528 $ 70,125 $ 81,318 One-time employee bonus + — + — + 13,512 Adjusted operating income $ 104,528 $ 70,125 $ 94,830 ÷ 3 ÷ 3 34,843 31,610 x 4 x 2 x 4 Adjusted annual

July 17, 2019 EX-99.1

Three Months Ended

EX-99.1 2 plxsf19q3earningsrelease-e.htm EXHIBIT 99.1 Plexus Announces Fiscal Third Quarter 2019 Financial Results • Record quarterly revenue of $800 million during the fiscal third quarter of 2019 • GAAP diluted EPS of $0.81 • Initiates fiscal fourth quarter 2019 revenue guidance of $760 to $800 million with GAAP diluted EPS of $0.81 to $0.91, excluding any non-recurring charges NEENAH, WI – July

July 17, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 17, 2019 PLEXUS CORP. (Exact name of registrant as specified in charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation

June 21, 2019 11-K

PLXXF / Plexus Holdings PLC 11-K - - 11-K

11-K 1 a2018form11-k.htm 11-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from…………………………to……………………….. Commission file n

May 15, 2019 EX-10.1

Credit Agreement, dated as of May 15, 2019, among Plexus Corp., the banks, financial institutions and other institutional lenders listed on the signature pages thereto, JPMorgan Chase Bank, N.A., as administrative agent, U.S. Bank National Association, as syndication agent, PNC Bank, National Association, Bank of America, N.A., MUFG Bank, Ltd., HSBC Bank USA, N.A., Bank of the West and Wells Fargo Bank, National Association, as co-documentation agents, and JPMorgan Chase Bank, N.A. and U.S. Bank National Association, as joint lead arrangers and joint book runners (including the related subsidiary guaranty).

EXECUTION COPY Deal CUSIP 72913HAD9 Revolving Loan CUSIP 72913HAE7 CREDIT AGREEMENT DATED AS OF MAY 15, 2019 AMONG PLEXUS CORP.

May 15, 2019 SD

PLXXF / Plexus Holdings PLC SD SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) One Plexus Way, Neenah, WI 54957 (Address of principal executive offices) (Zip Cod

May 15, 2019 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

8-K 1 form8-krefinancingofcredit.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 15, 2019 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (

May 15, 2019 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EXHIBIT 1.01 CONFLICT MINERALS REPORT OF PLEXUS CORP. IN ACCORDANCE WITH RULE 13p-1 UNDER THE SECURITIES EXCHANGE ACT OF 1934 FOR THE REPORTING PERIOD FROM JANUARY 1 TO DECEMBER 31, 2018 Introduction This Conflict Minerals Report (the “Report”) of Plexus Corp. (“Plexus,” the “Company,” “we,” “us,” or “our”) has been prepared for calendar year 2018 under the Securities Exchange Act of 1934 (the “Ac

May 3, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 30, 2019 OR ¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-14423 PLEXUS CORP. (Exact name of registran

May 3, 2019 EX-10.1

Amendment No. 8 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and MUFG Bank Ltd. (f/k/a The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch), as the Purchaser, dated as of March 20, 2019.

Exhibit 10.1 AMENDMENT NO. 8 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 8 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of March 20, 2019 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (“Plexus”), Plexus Intl. Sales & Logistics, LLC, a Delaware limited liability compan

May 3, 2019 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

EX-99.1 7 plxsf1910-qq2exhibit991.htm EXHIBIT 99.1 Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations (dollars in thousands): Six Months Ended Three Months Ended Six Months Ended Mar 30, Dec 29, Mar 31, 2019 2018 2018 Operating income, as reported $ 70,125 $ 36,951 $ 48,872 One-time employee bonus + — + — + 13,512 Adjusted operating income $ 70,125 $ 36,951 $ 62,384

April 17, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 17, 2019 PLEXUS CORP. (Exact name of registrant as specified in charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporatio

April 17, 2019 EX-95.1

Press release issued by Plexus Corp., dated April 17, 2019

Plexus Announces Fiscal Second Quarter 2019 Financial Results • Record quarterly revenue of $789 million during the fiscal second quarter of 2019 • GAAP diluted EPS of $0.

February 14, 2019 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2019 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incor

February 12, 2019 SC 13G/A

PLXS / Plexus Corp. / VANGUARD GROUP INC Passive Investment

SC 13G/A 1 plexuscorp.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11 )* Name of issuer: Plexus Corp Title of Class of Securities: Common Stock CUSIP Number: 729132100 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropriate box to designate the rule pursuant to which this

February 8, 2019 SC 13G/A

PLXS / Plexus Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* PLEXUS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 729132100 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is

February 1, 2019 10-Q

PLXXF / Plexus Holdings PLC 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 29, 2018 OR ¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-14423 PLEXUS CORP. (Exact name of regist

February 1, 2019 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations (dollars in thousands): Three Months Ended Twelve Months Ended Three Months Ended Dec 29, Sept 29, Dec 30, 2018 2018 2017 Operating income, as reported $ 36,951 $ 118,283 $ 31,557 One-time employee bonus + — + 13,512 + — Adjusted operating income $ 36,951 $ 131,795 $ 31,557 x 4 x 4 Adjusted annualized operating incom

January 16, 2019 EX-99.1

Three Months Ended

Plexus Announces Fiscal First Quarter 2019 Financial Results • Quarterly revenue of $766 million during the fiscal first quarter of 2019 • GAAP diluted EPS of $0.

January 16, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2019 PLEXUS CORP. (Exact name of registrant as specified in charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporat

December 10, 2018 DEFA14A

PLXXF / Plexus Holdings PLC DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

December 10, 2018 DEF 14A

PLXXF / Plexus Holdings PLC DEF 14A

DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

November 16, 2018 EX-10.7(A)

Summary of Directors' Compensation (11/18)*

EX-10.7(A) 4 plxsf1810-kexhibit107a.htm EXHIBIT 10.7(A) Exhibit 10.7(a) PLEXUS CORP. ANNUAL BOARD OF DIRECTORS AND COMMITTEE COMPENSATION Effective November 14, 2018 BOARD MEMBERS AND BOARD LEADERSHIP Chairman Retainer $240,000.00 USD Board Member Retainer (all directors) $65,000.00 USD Lead Director Retainer $40,000.00 USD COMMITTEE MEMBERS AUDIT COMMITTEE COMPENSATION & LEADERSHIP DEVELOPMENT CO

November 16, 2018 10-K

PLXXF / Plexus Holdings PLC 10-K (Annual Report)

10-K 1 plxsf1810-k.htm 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10–K (mark one) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 29, 2018 OR TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-14423 PLEX

November 16, 2018 EX-10.3(G)

Amendment No. 7 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and MUFG Bank Ltd. (f/k/a The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch), as the Purchaser, dated as of September 19, 2018.

EX-10.3(G) 3 plxsf1810-kexhibit103g.htm EXHIBIT 10.3(G) Exhibit 10.3 (g) AMENDMENT NO. 7 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 7 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of September 19, 2018 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (“Plexus”), Plexus I

November 16, 2018 EX-21

List of Subsidiaries

Plexus Corp. Exhibit 21 List of Subsidiaries of Plexus Corp. Plexus Corp. 2018 Form 10-K Entity Name Incorporation Jurisdiction Plexus Aerospace, Defense and Security Services, LLC USA - Wisconsin Plexus Asia, Ltd. British Virgin Islands Plexus Corp. (UK) Limited Scotland Plexus Corp. Limited Scotland Plexus Corp. Services (UK) Limited Scotland Plexus Deutschland GmbH Germany Plexus Electronica S.

November 16, 2018 EX-10.3(D)

Amendment No. 4 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch, as the Purchaser, dated as of September 11, 2017.

Exhibit 10.3 (d) AMENDMENT NO. 4 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 4 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of September 11, 2017 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (the “Seller Representative”), Plexus Intl. Sales & Logistics, LLC, a Delawa

November 16, 2018 EX-99.1

Reconciliation of ROIC to GAAP and Economic Return Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands): Fiscal year ended September 29, 2018 September 30, 2017 October 1, 2016 Operating income, as reported $ 118,283 $ 129,908 $ 99,439 One-time employee bonus 13,512 — — Typhoon-related losses — — 2,871 Accelerated stock-based compensation expense — — 5,210 Restruct

October 24, 2018 EX-99.1

Three Months Ended

EX-99.1 2 plxsf18q4earningsrelease-e.htm EXHIBIT 99.1 Plexus Announces Fiscal Fourth Quarter and Fiscal Year 2018 Financial Results • Record fiscal fourth quarter revenue of $771 million and record fiscal 2018 revenue of $2.9 billion • Fiscal fourth quarter GAAP diluted EPS of $2.20 • Fiscal fourth quarter non-GAAP adjusted diluted EPS of $0.96, excluding $1.24 per share related to net non-recurri

October 24, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 24, 2018 PLEXUS CORP. (Exact name of registrant as specified in charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporat

August 3, 2018 10-Q

PLXXF / Plexus Holdings PLC 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2018 OR ¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-14423 PLEXUS CORP. (Exact name of registrant

August 3, 2018 EX-99.1

Reconciliation of ROIC and Economic Return to GAAP Financial Statements

Exhibit 99.1 Return on Invested Capital ("ROIC") and Economic Return Calculations (dollars in thousands): Nine Months Ended Six Months Ended Nine Months Ended June 30, 2018 Mar 31, 2018 July 1, 2017 Operating income, as reported $ 81,318 $ 48,872 $ 95,943 One-time employee bonus + 13,512 + 13,512 + — Adjusted operating income 94,830 62,384 95,943 ÷ 3 ÷ 3 31,610 31,981 x 4 x 2 x 4 Adjusted annualiz

August 3, 2018 EX-10.1

Amendment No. 6 to Amended and Restated Master Accounts Receivable Purchase Agreement between Plexus Corp. and Plexus Manufacturing Sdn. Bhd., Plexus Intl. Sales & Logistics, LLC, Plexus Services Ro SRL, Plexus Corp. (UK) Limited and each additional seller party thereto from time to time as the Sellers, Plexus Corp., as Seller Representative, and MUFG Bank Ltd. (f/k/a The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch), as the Purchaser, dated as of May 4, 2018.

Exhibit 10.1 AMENDMENT NO. 6 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT This AMENDMENT NO. 6 TO AMENDED AND RESTATED MASTER ACCOUNTS RECEIVABLE PURCHASE AGREEMENT, dated as of May 4, 2018 (this “Amendment”), is made and entered into by and between Plexus Corp., a Wisconsin corporation (“Plexus”), Plexus Intl. Sales & Logistics, LLC, a Delaware limited liability company (

July 18, 2018 EX-99.1

Three Months Ended

Plexus Announces Fiscal Third Quarter 2018 Financial Results • Record quarterly revenue of $726 million during the fiscal third quarter of 2018 • GAAP diluted EPS of $0.

July 18, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 18, 2018 PLEXUS CORP. (Exact name of registrant as specified in charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation

June 22, 2018 11-K

PLXXF / Plexus Holdings PLC 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11–K [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from…………………………to……………………….. Commission file number………..001-14423………… A. Ful

June 18, 2018 EX-10.1

Note Purchase Agreement, dated as of June 15, 2018, between Plexus Corp. and the Purchasers named therein relating to an aggregate of $150,000,000 in principal amount of 4.05% Series A Senior Notes, due June 15, 2025, and 4.22% Series B Senior Notes, due June 15, 2028.

Exhibit 10.1 Execution Version PLEXUS CORP. $150,000,000 4.05% Series A Senior Notes due June 15, 2025 4.22% Series B Senior Notes due June 15, 2028 NOTE PURCHASE AGREEMENT Dated June 15, 2018 TABLE OF CONTENTS SECTION HEADING PAGE Section 1. Authorization of Notes 1 Section 2. Sale and Purchase of Notes 1 Section 3. Closing 2 Section 4. Conditions to Closing 2 Section 4.1. Representations and War

June 18, 2018 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2018 PLEXUS CORP. (Exact name of registrant as specified in its charter) Wisconsin 001-14423 39-1344447 (State or other jurisdiction (Commission (I.R.S. Employer of incorpora

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