FMAC.U / FirstMark Horizon Acquisition Corp. Units, each consisting of one share of Class A common stock and - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

FirstMark Horizon Acquisition Corp. Units, each consisting of one share of Class A common stock and
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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 FirstMark Horizon Acquisition Corp. Units, each consisting of one share of Class A common stock and
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
February 6, 2023 SC 13G/A

FMAC / FirstMark Horizon Acquisition Corp / BANK OF MONTREAL /CAN/ - BANK OF MONTREAL Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* FirstMark Horizon Acquisition Corp (Name of Issuer) Class A common stock (Title of Class of Securities) 33765Y101 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pur

April 8, 2022 15-12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13

15-12B 1 ea158190-1512bfirstmark.htm NOTICE OF TERMINATION UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-39585 FIRSTM

March 29, 2022 EX-99.25

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The New York Stock Exchange hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on April 11, 2022, pursuant to the provisions of Rule 12d2-2 (a).

March 28, 2022 EX-10.2

Form of Amendment and Waiver to PIPE Subscription Agreement

Exhibit 10.2 FORM OF WAIVER AND AMENDMENT NO. 1 TO SUBSCRIPTION AGREEMENT THIS WAIVER AND AMENDMENT NO. 1 TO SUBSCRIPTION AGREEMENT (this ?Amendment?) to that certain Subscription Agreement, dated as of October 6, 2021 (the ?Subscription Agreement?), by and among the undersigned subscriber (the ?Subscriber?), FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), and Starry G

March 28, 2022 EX-10.1

Merger Agreement Waiver, dated March 28, 2022, by and among FirstMark, Starry, Merger Sub and Holdings.

Exhibit 10.1 Execution Version STARRY GROUP HOLDINGS, INC. 38 Chauncy Street, Suite 200 Boston, MA 02111 March 28, 2022 VIA EMAIL FirstMark Horizon Acquisition Corp. 100 5th Ave, 3rd Floor New York, NY 10011 Attn: Eric Cheung E-mail: [email protected] Re: Waiver of Closing Conditions Ladies and Gentlemen: Reference is made to that certain Agreement and Plan of Merger, dated as of October 6, 20

March 28, 2022 425

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 28, 2022 (March 25, 2022) F

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 28, 2022 (March 25, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction o

March 28, 2022 EX-10.3

Form of Amendment to Series Z Subscription Agreement

Exhibit 10.3 Execution Version FORM OF WAIVER AND AMENDMENT NO. 1 TO SERIES Z SUBSCRIPTION AGREEMENT THIS WAIVER AND AMENDMENT NO. 1 TO SERIES Z SUBSCRIPTION AGREEMENT (this ?Amendment?) to that certain Series Z Subscription Agreement, dated as of October 6, 2021 (the ?Series Z Subscription Agreement?), by and among each of the undersigned subscribers (each, a ?Subscriber?) and Starry, Inc., a Del

March 28, 2022 EX-10.5

Series Z Subscription Agreement, dated March 25, 2022, between Starry and Tiger.

Exhibit 10.5 SERIES Z SUBSCRIPTION AGREEMENT This SERIES Z SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on March 25, 2022, by and between Starry, Inc., a Delaware corporation (?Starry?), and each of the undersigned subscribers (each, a ?Subscriber? and, collectively, the ?Subscribers?). WHEREAS, on October 6, 2021, FirstMark Horizon Acquisition Corp., a Delaware corporati

March 28, 2022 10-K

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 December 31, 2021 ☐ TRANSITION REPORT PURSUA

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 December 31, 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 No. 001-39585 FirstMark Horizon

March 28, 2022 EX-10.2

Form of Amendment and Waiver to PIPE Subscription Agreement

Exhibit 10.2 FORM OF WAIVER AND AMENDMENT NO. 1 TO SUBSCRIPTION AGREEMENT THIS WAIVER AND AMENDMENT NO. 1 TO SUBSCRIPTION AGREEMENT (this ?Amendment?) to that certain Subscription Agreement, dated as of October 6, 2021 (the ?Subscription Agreement?), by and among the undersigned subscriber (the ?Subscriber?), FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), and Starry G

March 28, 2022 EX-10.3

Form of Amendment to Series Z Subscription Agreement

Exhibit 10.3 Execution Version FORM OF WAIVER AND AMENDMENT NO. 1 TO SERIES Z SUBSCRIPTION AGREEMENT THIS WAIVER AND AMENDMENT NO. 1 TO SERIES Z SUBSCRIPTION AGREEMENT (this ?Amendment?) to that certain Series Z Subscription Agreement, dated as of October 6, 2021 (the ?Series Z Subscription Agreement?), by and among each of the undersigned subscribers (each, a ?Subscriber?) and Starry, Inc., a Del

March 28, 2022 EX-10.5

Series Z Subscription Agreement, dated March 25, 2022, between Starry and Tiger.

Exhibit 10.5 SERIES Z SUBSCRIPTION AGREEMENT This SERIES Z SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on March 25, 2022, by and between Starry, Inc., a Delaware corporation (?Starry?), and each of the undersigned subscribers (each, a ?Subscriber? and, collectively, the ?Subscribers?). WHEREAS, on October 6, 2021, FirstMark Horizon Acquisition Corp., a Delaware corporati

March 28, 2022 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, 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 28, 2022 (March 25, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction o

March 28, 2022 EX-10.1

Merger Agreement Waiver, dated March 28, 2022, by and among FirstMark, Starry, Merger Sub and Holdings.

Exhibit 10.1 Execution Version STARRY GROUP HOLDINGS, INC. 38 Chauncy Street, Suite 200 Boston, MA 02111 March 28, 2022 VIA EMAIL FirstMark Horizon Acquisition Corp. 100 5th Ave, 3rd Floor New York, NY 10011 Attn: Eric Cheung E-mail: [email protected] Re: Waiver of Closing Conditions Ladies and Gentlemen: Reference is made to that certain Agreement and Plan of Merger, dated as of October 6, 20

March 28, 2022 EX-10.4

Amendment to Sponsor Support Agreement, dated March 28, 2022, by and among FirstMark, the Sponsors, Holdings and Starry.

Exhibit 10.4 Execution Version FIRST Amendment To Sponsor support agreement THIS FIRST AMENDMENT TO SPONSOR SUPPORT AGREEMENT (this ?Amendment?) is made and entered into as of March 28, 2022 by and among FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the ?Sponsor Holdco?), the individuals whose names and signatures are set forth on the signature page to this Amendment (togeth

March 28, 2022 EX-10.4

Amendment to Sponsor Support Agreement, dated March 28, 2022, by and among FirstMark, the Sponsors, Holdings and Starry.

Exhibit 10.4 Execution Version FIRST Amendment To Sponsor support agreement THIS FIRST AMENDMENT TO SPONSOR SUPPORT AGREEMENT (this ?Amendment?) is made and entered into as of March 28, 2022 by and among FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the ?Sponsor Holdco?), the individuals whose names and signatures are set forth on the signature page to this Amendment (togeth

March 24, 2022 425

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 18, 2022 (March 16, 2022) F

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 18, 2022 (March 16, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction o

March 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): March 18, 2022 (March 16, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction o

March 14, 2022 8-K

Entry into a Material Definitive Agreement, 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 14, 2022 ( March 11, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction

March 14, 2022 425

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 14, 2022 ( March 11, 2022)

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 14, 2022 ( March 11, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction

March 14, 2022 EX-1.1

Amendment Letter, dated as of March 11, 2022

EX-1.1 2 ea156809ex1-1firstmark.htm AMENDMENT LETTER, DATED AS OF MARCH [ ], 2022 Exhibit 1.1 AMENDMENT LETTER March 11, 2022 FirstMark Horizon Acquisition Corp. 100 Fifth Avenue, 3rd Floor New York, NY 10011 Attention: Eric Cheung Secretary and General Counsel Dear Eric: Reference is made to the letter agreement dated September 19, 2021 (the “Letter Agreement”) by and between FirstMark Horizon Ac

March 14, 2022 425

1

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 FirstMark Horizon Acquisition Corp. Reminds Stockholders of Pro Rata Right to Additional Shares for Non-Redem

March 14, 2022 EX-10.1

First Amendment to Investment Management Trust Agreement, dated as of March 14, 2022

Exhibit 10.1 Execution Version FIRST Amendment To Investment management trust agreement THIS FIRST AMENDMENT TO INVESTMENT MANAGEMENT TRUST AGREEMENT (this ?Amendment?) is made and entered into as of March 14, 2022 by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), and Continental Stock Transfer & Trust Company, a New York corporation (the ?Trustee?). Capital

March 14, 2022 EX-1.1

Amendment Letter, dated as of March 11, 2022

EX-1.1 2 ea156809ex1-1firstmark.htm AMENDMENT LETTER, DATED AS OF MARCH [ ], 2022 Exhibit 1.1 AMENDMENT LETTER March 11, 2022 FirstMark Horizon Acquisition Corp. 100 Fifth Avenue, 3rd Floor New York, NY 10011 Attention: Eric Cheung Secretary and General Counsel Dear Eric: Reference is made to the letter agreement dated September 19, 2021 (the “Letter Agreement”) by and between FirstMark Horizon Ac

March 14, 2022 EX-10.1

First Amendment to Investment Management Trust Agreement, dated as of March 14, 2022

Exhibit 10.1 Execution Version FIRST Amendment To Investment management trust agreement THIS FIRST AMENDMENT TO INVESTMENT MANAGEMENT TRUST AGREEMENT (this ?Amendment?) is made and entered into as of March 14, 2022 by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), and Continental Stock Transfer & Trust Company, a New York corporation (the ?Trustee?). Capital

March 11, 2022 425

$ 0.24

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 FOR IMMEDIATE RELEASE FirstMark Horizon Acquisition Corp. Reminds Stockholders of Pro Rata Right to Additiona

March 11, 2022 425

2

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: March 11, 2022 FirstMark Horizon Acquisition Corp. Reminds Stockholders of Pro Rata Right to Additional Shares for Non-Redemption and Th

March 10, 2022 425

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 9, 2022 (March 9, 2022) Fir

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 9, 2022 (March 9, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001- 39585 85-2547650 (State or other jurisdiction of

March 10, 2022 425

###

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: March 10, 2022 Starry and FirstMark Horizon Acquisition Corp. Announce Non-Redemption Agreements Representing Approximately 2.4 Million

March 9, 2022 EX-10.1

Form of Non-Redemption Agreement

Exhibit 10.1 CONFIDENTIAL Execution Version FORM OF NON-REDEMPTION AGREEMENT THIS NON-REDEMPTION AGREEMENT (this ?Agreement?), dated as of March [?], 2022, is made by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (?SPAC?), Starry Group Holdings, Inc., a Delaware corporation (?New Starry?), and the undersigned investor[, for and on behalf of itself and any investor account o

March 9, 2022 EX-10.1

Form of Non-Redemption Agreement

Exhibit 10.1 CONFIDENTIAL Execution Version FORM OF NON-REDEMPTION AGREEMENT THIS NON-REDEMPTION AGREEMENT (this ?Agreement?), dated as of March [?], 2022, is made by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (?SPAC?), Starry Group Holdings, Inc., a Delaware corporation (?New Starry?), and the undersigned investor[, for and on behalf of itself and any investor account o

March 9, 2022 425

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 9, 2022 (March 9, 2022) Fir

425 1 ea156617-8k425firstmark.htm CURRENT REPORT 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 9, 2022 (March 9, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-

March 9, 2022 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, 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 9, 2022 (March 9, 2022) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001- 39585 85-2547650 (State or other jurisdiction of

March 7, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 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)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

March 4, 2022 425

Filed by Starry Group Holdings, Inc.

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: March 4, 2022 Starry.com Founding Stories Part IV: From Small Antennas to Big Antennas, the Technological Innovation That Drove Starry M

March 4, 2022 425

Filed by Starry Group Holdings, Inc.

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: March 4, 2022 Mergermarket Starry SPAC participants confident ahead of shareholder vote, CEO says March 4, 2022 Global turmoil has incre

March 2, 2022 425

Filed by Starry Group Holdings, Inc.

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: March 2, 2022 The Divide Podcast Interview with Virginia Lam Abrams, Senior Vice President, Communications, Government Affairs & Strateg

February 24, 2022 425

FIRSTMARK HORIZON ACQUISITION CORP. A Delaware Corporation 100 5th Avenue, 3rd Floor New York, New York 10011

425 1 f425firstmarkhorizon.htm NOTICE Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 FIRSTMARK HORIZON ACQUISITION CORP. A Delaware Corporation 100 5th Aven

February 17, 2022 425

Filed by Starry Group Holdings, Inc.

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: February 16, 2022 I?m Chet Kanojia. Ten years ago I started a company called Aereo. We got sued all the way to the US Supreme Court for

February 15, 2022 DEFM14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFM14A 1 d238600ddefm14a.htm DEFM14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commis

February 15, 2022 SC 13G

FMAC / FirstMark Horizon Acquisition Corp / BANK OF MONTREAL /CAN/ - BANK OF MONTREAL Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 FirstMark Horizon Acquisition Corp (Name of Issuer) Class A common stock (Title of Class of Securities) 33765Y101 (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

February 14, 2022 SC 13G/A

FMAC / FirstMark Horizon Acquisition Corp / GLAZER CAPITAL, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 FirstMark Horizon Acquisition Corp (Name of Issuer) Class A common stock, par value $0.0001 per share (Title of Class of Securities) 33765Y101 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

February 8, 2022 425

Filed by Starry Group Holdings, Inc.

Filed by Starry Group Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: February 8, 2022 Bloomberg Bay State Radio Interview Between Chet Kanojia, Starry, Inc., and Janet Wu, Bloomberg Bay State Radio Februar

February 7, 2022 SC 13G

FMAC / FirstMark Horizon Acquisition Corp / Weiss Asset Management LP Passive Investment

CUSIP NO. 33765Y101 SCHEDULE 13G PAGE 1 OF 10 PAGES =============================================================================== UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.)* FIRSTMARK HORIZON ACQUISITION CORP. - (Name of Issuer) Class A common stock, $0.0001 par value per share - (Title of Class o

February 2, 2022 SC 13G/A

FMAC / FirstMark Horizon Acquisition Corp / INTEGRATED CORE STRATEGIES (US) LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (AMENDMENT NO. 2) FIRSTMARK HORIZON ACQUISITION CORP. (Name of Issuer) CLASS A COMMON STOCK, PAR VALUE $0.0001 PER SHARE (Title of Class of Securities) 33765Y101 (CUSIP Number) DECEMBER 31, 2021 (Date of event which requires filing of this statement) Check the appropriate

January 27, 2022 425

Filed by Starry Holdings, Inc.

425 1 d477706d425.htm 425 Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 27, 2022 Broadband World News Starry Expands Its Ultra-Low-Cost Broadband Access Program to the Cambridge Ho

January 26, 2022 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 24, 2022 Broadband World News Despite being ?constantly poor,?, Starry shoots for substantial growth January 24, 2022 By Nicole Ferrar

January 19, 2022 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 19, 2022 BusinessWire Starry Announces Fourth Quarter 2021 Operational Update January 19, 2022 Starry closes Q4 exceeding targets and

January 19, 2022 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 19, 2022 Boston Globe Wireless Internet firm Starry shows growth, looks to merger to go public By Aaron Pressman, Boston Globe January

January 18, 2022 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 18, 2022 Analyst Day Presentation January 18, 2022 CONFIDENTIA L At Starry, Inc. (“Starry”), we believe the future is built on connect

January 18, 2022 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 18, 2022 Boston Globe After a notable year, SPACS may be going bust in Boston and beyond By Aaron Pressman January 18, 2022 In startup

January 12, 2022 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 12, 2022 SPACInsider Podcast Interview with Chet Kanojia, Starry, Inc. and Amish Jani, FirstMark Horizon Acquisition Corp. January 12,

January 5, 2022 425

1

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 5, 2022 Built In Honors Starry, Inc. in Its Esteemed 2022 Best Places To Work Awards Starry is named one of Boston?s Best Places to Wo

January 3, 2022 425

1

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: January 3, 2022 Starry Announces Rene Villegas Joins Company as Chief Marketing Officer The former Amazon Executive joins the disruptive fixed

December 17, 2021 425

Third Quarter Operational Update Snapshot Approximate as of September 30, 2021 Approximate as of September 30, 2020 YOY% Change Homes Serviceable (a) 5,065,304 3,618,951 +40.0 % Customer Relationships (b) 55,078 29,581 +86.2 % Penetration of Homes Se

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: December 17, 2021 Starry Announces Third Quarter 2021 Operational Update Businesswire.com December 17, 2021 Starry exceeds targets and demonst

December 14, 2021 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A (Amendment No. 1) (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 20

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A (Amendment No. 1) (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 00

December 14, 2021 8-K

Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim Review

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): December 14, 2021 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction (Commission Fil

December 14, 2021 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 2) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ☐ TRAN

10-K/A 1 f10k2020a2firstmark.htm AMENDMENT NO. 2 TO FORM 10-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 2) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

December 10, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: December 10, 2021 Starry, Inc. to Present at the Oppenheimer 5G Summit: Wireless and Cloud Convergence Begins Businesswire.com December 10, 20

December 9, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: December 9, 2021 Starry?s High Capacity, Next Generation Fixed Wireless Technology Leverages Unique Licensed Millimeter Wave Innovations to En

December 9, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: December 8, 2021 Barclays 2021 Global Technology, Media and Telecommunications Conference Starry, Inc. Interview Transcript December 8, 2021 D

December 7, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: December 7, 2021 Businesswire.com Starry, Inc. to Present at the Barclays Global Technology, Media and Telecommunications Conference December

November 22, 2021 8-K

Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim Review

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 22, 2021 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction (Commission Fil

November 22, 2021 425

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 22, 2021 FirstMark Horiz

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 22, 2021 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction (Commission Fil

November 22, 2021 10-Q

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 September 30, 2021 ☐ TRANSITION REPO

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 September 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-39585 FirstMark Ho

November 15, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: November 15, 2021 New Street Research & Boston Consulting Group -5G Conference Interview of Chaitanya Kanojia, Co-Founder and CEO, Starry, Inc

November 15, 2021 NT 10-Q

2

NT 10-Q 1 ea150586-nt10qfirstmarkhor.htm NOTIFICATION OF LATE FILING UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SEC File Number 001-39585 FORM 12b-25 NOTIFICATION OF LATE FILING CUSIP Number 33765Y 101 (Check One): ☐ Form 10-K ☐ Form 20-F ☐ Form 11-K ☒ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: September 30, 2021 ☐ Transition Report on Form 10-K

November 5, 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): November 5, 2021 ( November 5, 2021) FirstMark Horizon Acquisition Corp. (Exact name of Registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdict

October 26, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 25, 2021 How to Fund Your Next Venture Now - Interview of Chet Kanojia, Starry, Inc., and Phyllis Newhouse, by Christine Lagorio-Chafk

October 8, 2021 425

Starry Announcement FAQ (Internal) We’re entering an exciting new phase for the company. Below are some frequently asked questions with answers regarding this transaction and what comes next.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry Announcement FAQ (Internal) We’re entering an exciting new phase for the company. Below are some frequently asked ques

October 8, 2021 425

Starry Email to Employees

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry Email to Employees SUBJECT: Starry Begins Process to Become a Public Company TO: Starry Employees FROM: Chet Kanojia D

October 8, 2021 425

Email to Starry Wait List Consumers

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Email to Starry Wait List Consumers SUBJECT: Starry Begins Process to Become a Public Company TO: Starry Email Wait Lister FR

October 8, 2021 425

Email to Starry Partners & Key Stakeholders

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Email to Starry Partners & Key Stakeholders SUBJECT: Starry Begins Process to Go Public TO: Starry Partners, Key Stakeholders

October 8, 2021 425

2

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry Email to Managers on Additional Resources SUBJECT: Additional Information Resources Regarding Today?s Announcement TO:

October 8, 2021 425

2

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry?s Chet Kanoija; Fixed Wireless Broadband Provider Becoming Public Company Lightshed Live October 7, 2021 Link Brandon

October 8, 2021 425

Starry // Social Media Post Copy

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry // Social Media Post Copy Twitter & Instagram When we started Starry, we set out to change the broadband industry. We

October 8, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021

October 8, 2021 425

2

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Broadband Startup Starry Going Public Via SPAC Bloomberg TV October 7, 2021 Link Emily Chang: Chet, you are a familiar face o

October 8, 2021 425

Email to Starry Subscribers

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Email to Starry Subscribers SUBJECT: Starry Begins Process to Become a Public Company TO: Starry Subscribers FROM: Chet Kanoj

October 7, 2021 425

Starry Email to Employees

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Starry Email to Employees SUBJECT: Starry Begins Process to Become a Public Company TO: Starry Employees FRO

October 7, 2021 425

Email to Starry Subscribers

425 1 ea148468-425firstmark.htm FORM 425 Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Email to Starry Subscribers SUBJECT: Starry Begins Process to Becom

October 7, 2021 425

Filed by FirstMark Horizon Acquisition Corp.

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Starry Email to Managers on Additional Resources SUBJECT: Additional Information Resources Regarding Today?s

October 7, 2021 425

Filed by Starry Holdings, Inc.

425 1 ea148577-425starryhold.htm FORM 425 Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry to go public with FirstMark in deal valued at $1.66B Fierce Wireless October

October 7, 2021 EX-10.1

Form of PIPE Subscription Agreement

Exhibit 10.1 FORM OF SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on October 6, 2021, by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), Starry Holdings, Inc., a Delaware corporation (?Holdings?) and the undersigned subscriber (?Subscriber?). WHEREAS, concurrently with the execution of this Subscription

October 7, 2021 EX-99.2

CONFIDENTIA L INVESTOR PRESENTATION 2021 STARRY INTERNET CONFIDENTIAL CONFIDENTIAL DISCLAIMER This confidential presentation (this “presentation”) is being delivered to you by Starry, Inc. (“Starry”) and FirstMark Horizon Acquisition Corp. (”FMAC”) f

Exhibit 99.2 CONFIDENTIA L INVESTOR PRESENTATION 2021 STARRY INTERNET CONFIDENTIAL CONFIDENTIAL DISCLAIMER This confidential presentation (this ?presentation?) is being delivered to you by Starry, Inc. (?Starry?) and FirstMark Horizon Acquisition Corp. (?FMAC?) for use by Starry and FMAC in connection with their potential business combination and the offering of the securities of the post - busine

October 7, 2021 EX-10.4

Sponsor Support Agreement, dated as of October 6, 2021

Exhibit 10.4 SPONSOR SUPPORT AGREEMENT This Sponsor Support Agreement (this ?Agreement?) is dated as of October 6, 2021 by and among FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the ?Sponsor Holdco?), the Persons set forth on Schedule I hereto (together with the Sponsor Holdco, each, a ?Sponsor? and, together, the ?Sponsors?), FirstMark Horizon Acquisition Corp., a Delaware

October 7, 2021 425

2

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Why Starry plans to go public in a $1.66B SPAC deal Boston Business Journal October 7, 2021 By Lucia Maffei Link Boston-based

October 7, 2021 EX-10.5

Form of Starry Holders Support Agreement

Exhibit 10.5 FoRM OF COMPANY HOLDERS SUPPORT AGREEMENT This Company Holders Support Agreement (this ?Agreement?), dated as of October 6, 2021, is entered into by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (?SPAC?), Starry Holdings, Inc., a Delaware corporation (?Pubco?), Starry, Inc., a Delaware corporation (the ?Company?), and certain of the stockholders of the Company,

October 7, 2021 EX-99.1

Starry, Inc. to Go Public in Business Combination with FirstMark Horizon Acquisition Corp. to Bring its Transformative Broadband Service to Millions of Households

EX-99.1 8 ea148137ex99-1firstmark.htm JOINT PRESS RELEASE, DATED AS OF OCTOBER 7, 2021 Exhibit 99.1 Starry, Inc. to Go Public in Business Combination with FirstMark Horizon Acquisition Corp. to Bring its Transformative Broadband Service to Millions of Households ● Starry, Inc. ("Starry") delivers customers a high speed, fixed wireless broadband experience at a fraction of the cost of fiber through

October 7, 2021 EX-10.2

Form of Series Z Subscription Agreement

Exhibit 10.2 FORM OF SERIES Z SUBSCRIPTION AGREEMENT This SERIES Z SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on October 6, 2021, by and between Starry, Inc., a Delaware corporation (?Starry?), and each of the undersigned subscribers (each, a ?Subscriber? and, collectively, the ?Subscribers?). WHEREAS, on October 6, 2021, concurrently with the execution of this Subscrip

October 7, 2021 EX-99.1

Starry, Inc. to Go Public in Business Combination with FirstMark Horizon Acquisition Corp. to Bring its Transformative Broadband Service to Millions of Households

Exhibit 99.1 Starry, Inc. to Go Public in Business Combination with FirstMark Horizon Acquisition Corp. to Bring its Transformative Broadband Service to Millions of Households ? Starry, Inc. ("Starry") delivers customers a high speed, fixed wireless broadband experience at a fraction of the cost of fiber through its unique, end-to-end technology stack ? Today, Starry?s network covers more than 4.7

October 7, 2021 425

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 7, 2021 (October 6, 2021)

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 7, 2021 (October 6, 2021) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction

October 7, 2021 EX-10.4

Sponsor Support Agreement, dated as of October 6, 2021

Exhibit 10.4 SPONSOR SUPPORT AGREEMENT This Sponsor Support Agreement (this ?Agreement?) is dated as of October 6, 2021 by and among FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the ?Sponsor Holdco?), the Persons set forth on Schedule I hereto (together with the Sponsor Holdco, each, a ?Sponsor? and, together, the ?Sponsors?), FirstMark Horizon Acquisition Corp., a Delaware

October 7, 2021 EX-10.3

Form of Convertible Note Subscription Agreement

Exhibit 10.3 FORM OF CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT This CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT (this ?Convertible Note Subscription Agreement?) is entered into on October 6, 2021, by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (?FMHAC?), and each undersigned subscriber (each, a ?Subscriber? and collectively, the ?Subscribers?). Notwithstanding anything herein t

October 7, 2021 EX-10.2

Form of Series Z Subscription Agreement

Exhibit 10.2 FORM OF SERIES Z SUBSCRIPTION AGREEMENT This SERIES Z SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on October 6, 2021, by and between Starry, Inc., a Delaware corporation (?Starry?), and each of the undersigned subscribers (each, a ?Subscriber? and, collectively, the ?Subscribers?). WHEREAS, on October 6, 2021, concurrently with the execution of this Subscrip

October 7, 2021 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, 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): October 7, 2021 (October 6, 2021) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction

October 7, 2021 425

2

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry Internet to Go Public Via Blank-Check Deal With FirstMark Bloomberg October 7, 2021 By Liana Baker and Crystal Tse Lin

October 7, 2021 425

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 7, 2021 (October 6, 2021)

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 7, 2021 (October 6, 2021) FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction

October 7, 2021 425

Email to Starry Wait List Consumers

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Email to Starry Wait List Consumers SUBJECT: Starry Begins Process to Become a Public Company TO: Starry Ema

October 7, 2021 EX-10.5

Form of Starry Holders Support Agreement

Exhibit 10.5 FoRM OF COMPANY HOLDERS SUPPORT AGREEMENT This Company Holders Support Agreement (this ?Agreement?), dated as of October 6, 2021, is entered into by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (?SPAC?), Starry Holdings, Inc., a Delaware corporation (?Pubco?), Starry, Inc., a Delaware corporation (the ?Company?), and certain of the stockholders of the Company,

October 7, 2021 EX-10.4

Sponsor Support Agreement, dated as of October 6, 2021

Exhibit 10.4 SPONSOR SUPPORT AGREEMENT This Sponsor Support Agreement (this ?Agreement?) is dated as of October 6, 2021 by and among FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the ?Sponsor Holdco?), the Persons set forth on Schedule I hereto (together with the Sponsor Holdco, each, a ?Sponsor? and, together, the ?Sponsors?), FirstMark Horizon Acquisition Corp., a Delaware

October 7, 2021 425

Filed by Starry Holdings, Inc.

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Interview with Chet Kanojia, CEO of Starry, Inc. Bloomberg Bay State Business Radio October 7, 2021 Link Tom Moroney (Host):

October 7, 2021 EX-99.1

Starry, Inc. to Go Public in Business Combination with FirstMark Horizon Acquisition Corp. to Bring its Transformative Broadband Service to Millions of Households

Exhibit 99.1 Starry, Inc. to Go Public in Business Combination with FirstMark Horizon Acquisition Corp. to Bring its Transformative Broadband Service to Millions of Households ? Starry, Inc. ("Starry") delivers customers a high speed, fixed wireless broadband experience at a fraction of the cost of fiber through its unique, end-to-end technology stack ? Today, Starry?s network covers more than 4.7

October 7, 2021 EX-2.1

Agreement and Plan of Merger, dated as of October 6, 2021

Exhibit 2.1 CONFIDENTIAL EXECUTION VERSION AGREEMENT AND PLAN OF MERGER dated as of October 6, 2021 by and among FIRSTMARK HORIZON ACQUISITION CORP., SIRIUS MERGER SUB, INC., STARRY HOLDINGS, INC. and STARRY, INC. TABLE OF CONTENTS Page Article I CERTAIN DEFINITIONS 3 1.01 Definitions 3 1.02 Other Definitions 17 1.03 Construction 20 1.04 Knowledge 21 Article II THE MERGERS; CLOSINGS 21 2.01 The Me

October 7, 2021 EX-2.1

Agreement and Plan of Merger, dated as of October 6, 2021

EX-2.1 2 ea148137ex2-1firstmark.htm AGREEMENT AND PLAN OF MERGER, DATED AS OF OCTOBER 6, 2021 Exhibit 2.1 CONFIDENTIAL EXECUTION VERSION AGREEMENT AND PLAN OF MERGER dated as of October 6, 2021 by and among FIRSTMARK HORIZON ACQUISITION CORP., SIRIUS MERGER SUB, INC., STARRY HOLDINGS, INC. and STARRY, INC. TABLE OF CONTENTS Page Article I CERTAIN DEFINITIONS 3 1.01 Definitions 3 1.02 Other Definit

October 7, 2021 EX-10.5

Form of Starry Holders Support Agreement

Exhibit 10.5 FoRM OF COMPANY HOLDERS SUPPORT AGREEMENT This Company Holders Support Agreement (this ?Agreement?), dated as of October 6, 2021, is entered into by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (?SPAC?), Starry Holdings, Inc., a Delaware corporation (?Pubco?), Starry, Inc., a Delaware corporation (the ?Company?), and certain of the stockholders of the Company,

October 7, 2021 EX-10.3

Form of Convertible Note Subscription Agreement

Exhibit 10.3 FORM OF CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT This CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT (this “Convertible Note Subscription Agreement”) is entered into on October 6, 2021, by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (“FMHAC”), and each undersigned subscriber (each, a “Subscriber” and collectively, the “Subscribers”). Notwithstanding anything herein t

October 7, 2021 EX-10.1

Form of PIPE Subscription Agreement

Exhibit 10.1 FORM OF SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on October 6, 2021, by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), Starry Holdings, Inc., a Delaware corporation (?Holdings?) and the undersigned subscriber (?Subscriber?). WHEREAS, concurrently with the execution of this Subscription

October 7, 2021 425

FirstMark Capital // Social Media Post Copy

Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 FirstMark Capital // Social Media Post Copy Twitter (@firstmarkcap) ● Starry, a next generation licensed fixed wireless techn

October 7, 2021 EX-10.3

Form of Convertible Note Subscription Agreement

EX-10.3 5 ea148137ex10-3firstmark.htm FORM OF CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT Exhibit 10.3 FORM OF CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT This CONVERTIBLE NOTE SUBSCRIPTION AGREEMENT (this “Convertible Note Subscription Agreement”) is entered into on October 6, 2021, by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (“FMHAC”), and each undersigned subscriber (each,

October 7, 2021 425

CO NF IDE NT I A L OCTOBER 2021 ALL HANDS CONFIDENTIAL WE ARE INCREDIBLY PROUD TO ANNOUNCE A TRANSACTION WITH FIRSTMARK HORIZON ACQUISITION CORP. THAT WILL PROVIDE STARRY WITH ADDITIONAL FINANCING AND TAKE US PUBLIC CONFIDENTIAL PG 2 . SOLVING FOR OU

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 CO NF IDE NT I A L OCTOBER 2021 ALL HANDS CONFIDENTIAL WE ARE INCREDIBLY PROUD TO ANNOUNCE A TRANSACTION WIT

October 7, 2021 EX-10.1

Form of PIPE Subscription Agreement

Exhibit 10.1 FORM OF SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this ?Subscription Agreement?) is entered into on October 6, 2021, by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the ?Company?), Starry Holdings, Inc., a Delaware corporation (?Holdings?) and the undersigned subscriber (?Subscriber?). WHEREAS, concurrently with the execution of this Subscription

October 7, 2021 425

2

425 1 ea148583-425starryholdings.htm FORM 425 Filed by Starry Holdings, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001-39585 Date: October 07, 2021 Starry and FMAC management discuss the transaction Starry.com October 7, 2021 L

October 7, 2021 425

Starry // Social Media Post Copy

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Starry // Social Media Post Copy Twitter & Instagram When we started Starry, we set out to change the broadb

October 7, 2021 EX-99.2

CONFIDENTIA L INVESTOR PRESENTATION 2021 STARRY INTERNET CONFIDENTIAL CONFIDENTIAL DISCLAIMER This confidential presentation (this “presentation”) is being delivered to you by Starry, Inc. (“Starry”) and FirstMark Horizon Acquisition Corp. (”FMAC”) f

Exhibit 99.2 CONFIDENTIA L INVESTOR PRESENTATION 2021 STARRY INTERNET CONFIDENTIAL CONFIDENTIAL DISCLAIMER This confidential presentation (this ?presentation?) is being delivered to you by Starry, Inc. (?Starry?) and FirstMark Horizon Acquisition Corp. (?FMAC?) for use by Starry and FMAC in connection with their potential business combination and the offering of the securities of the post - busine

October 7, 2021 EX-10.2

Form of Series Z Subscription Agreement

Exhibit 10.2 FORM OF SERIES Z SUBSCRIPTION AGREEMENT This SERIES Z SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into on October 6, 2021, by and between Starry, Inc., a Delaware corporation (“Starry”), and each of the undersigned subscribers (each, a “Subscriber” and, collectively, the “Subscribers”). WHEREAS, on October 6, 2021, concurrently with the execution of this Subscrip

October 7, 2021 425

Email to Starry Partners & Key Stakeholders

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Email to Starry Partners & Key Stakeholders SUBJECT: Starry Begins Process to Go Public TO: Starry Partners,

October 7, 2021 EX-99.2

CONFIDENTIA L INVESTOR PRESENTATION 2021 STARRY INTERNET CONFIDENTIAL CONFIDENTIAL DISCLAIMER This confidential presentation (this “presentation”) is being delivered to you by Starry, Inc. (“Starry”) and FirstMark Horizon Acquisition Corp. (”FMAC”) f

EX-99.2 9 ea148137ex99-2firstmark.htm INVESTOR PRESENTATION, DATED AS OF OCTOBER 7, 2021 Exhibit 99.2 CONFIDENTIA L INVESTOR PRESENTATION 2021 STARRY INTERNET CONFIDENTIAL CONFIDENTIAL DISCLAIMER This confidential presentation (this “presentation”) is being delivered to you by Starry, Inc. (“Starry”) and FirstMark Horizon Acquisition Corp. (”FMAC”) for use by Starry and FMAC in connection with the

October 7, 2021 425

Starry Announcement FAQ (Internal) We’re entering an exciting new phase for the company. Below are some frequently asked questions with answers regarding this transaction and what comes next.

Filed by FirstMark Horizon Acquisition Corp. Pursuant to Rule 425 under the Securities Act of 1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: FirstMark Horizon Acquisition Corp. Commission File No.: 001- 39585 Starry Announcement FAQ (Internal) We?re entering an exciting new phase for the company. Below are some freq

October 7, 2021 EX-99.3

Page 1 of 6

Exhibit 99.3 Chet Kanojia: Welcome everyone and thank you for making the time to listen to this summary presentation. In addition to this, there is a detailed investor presentation available on our website and I encourage you to review that material as well. My name is Chet Kanojia and I?m one of the founders and CEO of Starry Internet. I?m really excited to introduce Starry today. Starry is truly

October 7, 2021 EX-99.3

Page 1 of 6

Exhibit 99.3 Chet Kanojia: Welcome everyone and thank you for making the time to listen to this summary presentation. In addition to this, there is a detailed investor presentation available on our website and I encourage you to review that material as well. My name is Chet Kanojia and I?m one of the founders and CEO of Starry Internet. I?m really excited to introduce Starry today. Starry is truly

October 7, 2021 EX-99.3

Page 1 of 6

Exhibit 99.3 Chet Kanojia: Welcome everyone and thank you for making the time to listen to this summary presentation. In addition to this, there is a detailed investor presentation available on our website and I encourage you to review that material as well. My name is Chet Kanojia and I?m one of the founders and CEO of Starry Internet. I?m really excited to introduce Starry today. Starry is truly

October 7, 2021 EX-2.1

Agreement and Plan of Merger, dated as of October 6, 2021

Exhibit 2.1 CONFIDENTIAL EXECUTION VERSION AGREEMENT AND PLAN OF MERGER dated as of October 6, 2021 by and among FIRSTMARK HORIZON ACQUISITION CORP., SIRIUS MERGER SUB, INC., STARRY HOLDINGS, INC. and STARRY, INC. TABLE OF CONTENTS Page Article I CERTAIN DEFINITIONS 3 1.01 Definitions 3 1.02 Other Definitions 17 1.03 Construction 20 1.04 Knowledge 21 Article II THE MERGERS; CLOSINGS 21 2.01 The Me

August 13, 2021 10-Q

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 30, 2021 ☐ TRANSITION REPORT PU

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 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-39585 FirstMark Horizon

June 2, 2021 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

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 25, 2021 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001- 39585 85-2547650 (State or other jurisdiction (Commission (I.R.S.

May 28, 2021 10-Q

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 31, 2021 ☐ TRANSITION REPORT P

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 31, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-39585 FirstMark Horizo

May 27, 2021 425

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 26, 2021 FirstMark Horizon Ac

425 1 ea141590-8kfirstmark.htm FORM 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 26, 2021 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or

May 27, 2021 8-K

Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim Review

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 26, 2021 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction (Commission (I.R.S.

May 27, 2021 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No.1) (Mark One)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No.1) (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 Or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to To Commission File No. 001-39

May 18, 2021 NT 10-Q

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 SEC File Number 001-39585 NOTIFICATION OF LATE FILING CUSIP Number 33765Y 101 (Check One): ? Form 10-K ? Form 20-F ? Form 11-K ? Form 10-Q ? Form 10-D ? Form N-CEN ? Form N-CSR For Period Ended: March 31, 2021 ? Transition Report on Form 10-K ? Transition Report on Form 20-F ? Transition Report on Form 11-K ? Trans

March 29, 2021 EX-14.01

Code of Ethics and Business Conduct of FirstMark Horizon Acquisition Corp.

Exhibit 14.01 CODE OF ETHICS AND BUSINESS CONDUCT OF FIRSTMARK HORIZON ACQUISITION CORP. 1. Introduction The Board of Directors (the ?Board?) of FirstMark Horizon Acquisition Corp. (the ?Company?) has adopted this code of ethics (this ?Code?), as amended from time to time by the Board and which is applicable to all of the Company?s directors, officers and employees (to the extent that employees ar

March 29, 2021 EX-4.2

Description of the Company’s securities.

Exhibit 4.2 DESCRIPTION OF SECURITIES As of December 31, 2020, FirstMark Horizon Acquisition Corp. (?we,? ?our,? ?us? or the ?company?) had the following three classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?): (i) its units, each consisting of one share of Class A common stock and one-third of one redeemable warrant, (ii) Cla

March 29, 2021 10-K

Annual Report - ANNUAL REPORT

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 December 31, 2020 Or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to To Commission File No. 001-39585 FirstMark Horiz

February 16, 2021 SC 13G

FirstMark Horizon Acquisition Corp

SC 13G 1 fmac20201231.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 FirstMark Horizon Acquisition Corp (Name of Issuer) Class A common stock, par value $0.0001 per share (Title of Class of Securities) 33765Y101 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

February 2, 2021 EX-1

Agreement of Joint Filing as required by Rule 13d-1(k)(1) under the Act.

EX-1 2 ea134371ex99-1firstmark.htm AGREEMENT OF JOINT FILING AS REQUIRED BY RULE 13D-1(K)(1) UNDER THE ACT Exhibit 1 AGREEMENT OF JOINT FILING This joint filing agreement (this “Agreement”) is made and entered into as of this 2nd day of February 2021, by and among FirstMark Horizon Sponsor LLC, Richard Heitzmann and Amish Jani. The parties to this Agreement hereby acknowledge and agree that the fo

February 2, 2021 SC 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. __)* Under the Securities Exchange Act of 1934 FirstMark Horizon Acquisition Corp. (Name of Issuer) Class A Common Stock, par value $0.0001 per share

SC 13G 1 ea134371-13gfirstfirstmark.htm SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. )* Under the Securities Exchange Act of 1934 FirstMark Horizon Acquisition Corp. (Name of Issuer) Class A Common Stock, par value $0.0001 per share (Titles of Class of Securities) 33765Y 101 (CUSIP Number) December 31, 2020 (Date of Event Which Re

January 20, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (AMENDMENT NO. 1) FIRSTMARK HORIZON ACQUISITION CORP. (Name of Issuer) CLASS A COMMON STOCK, PAR VALUE $0.0001 PER SHARE (T

SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (AMENDMENT NO. 1) FIRSTMARK HORIZON ACQUISITION CORP. (Name of Issuer) CLASS A COMMON STOCK, PAR VALUE $0.0001 PER SHARE (Title of Class of Securities) 33765Y101 (CUSIP Number) DECEMBER 31, 2020 (Date of event which requires filing of this statement) Check the

November 25, 2020 8-K

Financial Statements and Exhibits, Other Events - CURRENT REPORT

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 25, 2020 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-3958 85-2547650 (State or other jurisdiction (Commission (I.R

November 25, 2020 EX-99.1

FirstMark Horizon Acquisition Corp. Announces the Separate Trading of its Class A Common Stock and Redeemable Warrants Commencing November 27, 2020

Exhibit 99.1 FOR IMMEDIATE RELEASE FirstMark Horizon Acquisition Corp. Announces the Separate Trading of its Class A Common Stock and Redeemable Warrants Commencing November 27, 2020 NEW YORK, NY, November 25, 2020 — FirstMark Horizon Acquisition Corp. (NYSE: FMAC.U) (the “Company”) today announced that, commencing November 27, 2020, holders of the units sold in the Company’s initial public offeri

November 19, 2020 10-Q

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 September 30, 2020 ☐ TRANSITION REPO

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 September 30, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to FirstMark Horizon Acquisition Corp. (Ex

October 14, 2020 EX-99.1

FIRSTMARK HORIZON ACQUISITION CORP.

Exhibit 99.1 FIRSTMARK HORIZON ACQUISITION CORP. Report of Independent Registered Public Accounting Firm F-2 Balance Sheet as of October 8, 2020 F-3 Notes to Financial Statement F-4 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Stockholders and Board of Directors of FirstMark Horizon Acquisition Corp. Opinion on the Financial Statement We have audited the accompanying balance shee

October 14, 2020 8-K

Financial Statements and Exhibits, Other Events - CURRENT REPORT

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 8, 2020 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction (Commission (I.R.

October 13, 2020 SC 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 FIRSTMARK HORIZON ACQUISITION CORP. (Name of Issuer) CLASS A COMMON STOCK, PAR VALUE $0.0001 PER SHARE (Title of Class of S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 FIRSTMARK HORIZON ACQUISITION CORP. (Name of Issuer) CLASS A COMMON STOCK, PAR VALUE $0.0001 PER SHARE (Title of Class of Securities) 33765Y200** (CUSIP Number) OCTOBER 6, 2020 (Date of event which requires filing of this statement) Check the appropriate box to designate t

October 8, 2020 EX-10.12

Indemnity Agreement, dated October 5, 2020, between the Company and Allison Goldberg.

Exhibit 10.12 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Allison Goldberg (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless the

October 8, 2020 8-K

Other Events, 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): October 5, 2020 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 001-39585 85-2547650 (State or other jurisdiction (Commission (I.R.

October 8, 2020 EX-3.1

Amended and Restated Certificate of Incorporation of FirstMark Horizon Acquisition Corp. (incorporated by reference to Exhibit 3.1 to FirstMark’s Current Report on Form 8-K filed with the SEC on October 8, 2020).

Exhibit 3.1 Delaware Page 1 The First State I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE RESTATED CERTIFICATE OF “FIRSTMARK HORIZON ACQUISITION CORP.”, FILED IN THIS OFFICE ON THE FIFTH DAY OF OCTOBER, A.D. 2020, AT 4:27 O`CLOCK P.M. 3440465 8100 Authentication: 203797449 SR# 20207651631 Date: 10-05-20 You may

October 8, 2020 EX-10.3

Registration Rights Agreement, dated October 5, 2020, among the Company, the Sponsor and certain other security holders party thereto.

Exhibit 10.3 EXECUTION VERSION REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of October 5, 2020, is made and entered into by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the “Sponsor”), and the other parties listed on the signature pages her

October 8, 2020 EX-10.1

Letter Agreement, dated October 5, 2020, among the Company, the Sponsor and the Company’s officers and directors.

Exhibit 10.1 EXECUTION VERSION October 5, 2020 FirstMark Horizon Acquisition Corp. 100 5th Ave, 3rd Floor New York, NY 10011 Re: Initial Public Offering Ladies and Gentlemen: This letter (this “Letter Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into or proposed to be entered into by and between FirstMark Horizon Acquisi

October 8, 2020 EX-10.10

Indemnity Agreement, dated October 5, 2020, between the Company and Luis Ubiñas.

Exhibit 10.10 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Luis Ubiñas (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they are

October 8, 2020 EX-10.13

Indemnity Agreement, dated October 5, 2020, between the Company and Jason Robins.

Exhibit 10.13 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Jason Robins (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they ar

October 8, 2020 EX-10.2

Investment Management Trust Agreement, dated October 5, 2020, between the Company and Continental Stock Transfer & Trust Company, as trustee.

Exhibit 10.2 EXECUTION VERSION INVESTMENT MANAGEMENT TRUST AGREEMENT This Investment Management Trust Agreement (this “Agreement”) is made effective as of October 5, 2020, by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation (the “Trustee”). WHEREAS, the Company’s registration statement on

October 8, 2020 EX-4.1

Warrant Agreement, dated October 8, 2020, between FirstMark Horizon Acquisition Corp. and Continental Stock Transfer & Trust Company, as warrant agent.

Exhibit 4.1 EXECUTION VERSION WARRANT AGREEMENT FIRSTMARK HORIZON ACQUISITION CORP. and CONTINENTAL STOCK TRANSFER & TRUST COMPANY Dated October 5, 2020 THIS WARRANT AGREEMENT (this “Agreement”), dated October 5, 2020, is by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation, as warrant age

October 8, 2020 EX-10.6

Indemnity Agreement, dated October 5, 2020, between the Company and Richard Heitzmann.

Exhibit 10.6 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Richard Heitzmann (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless the

October 8, 2020 EX-10.5

Private Placement Warrants Purchase Agreement, dated October 5, 2020, between the Company and the Sponsor.

Exhibit 10.5 EXECUTION VERSION PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT THIS PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT (as it may from time to time be amended and including all exhibits referenced herein, this “Agreement”), dated as of October 5, 2020, is entered into by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and FirstMark Horizon Sponsor

October 8, 2020 EX-99.1

FirstMark Horizon Acquisition Corp. Announces Pricing of Upsized $360 Million Initial Public Offering

Exhibit 99.1 FirstMark Horizon Acquisition Corp. Announces Pricing of Upsized $360 Million Initial Public Offering NEW YORK, NY, Oct. 05, 2020 (GLOBE NEWSWIRE) - FirstMark Horizon Acquisition Corp. (the “Company”) announced today that it priced its initial public offering of 36,000,000 units at $10.00 per unit. The units will be listed on the New York Stock Exchange (the “NYSE”) and trade under th

October 8, 2020 EX-10.7

Indemnity Agreement, dated October 5, 2020, between the Company and Amish Jani.

Exhibit 10.7 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Amish Jani (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they are p

October 8, 2020 EX-10.9

Indemnity Agreement, dated October 5, 2020, between the Company and Daniel Gaisin.

Exhibit 10.9 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Daniel Gaisin (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they ar

October 8, 2020 EX-10.11

Indemnity Agreement, dated October 5, 2020, between the Company and Frederick Ball.

Exhibit 10.11 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Frederick Ball (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they

October 8, 2020 EX-10.8

Indemnity Agreement, dated October 5, 2020, between the Company and Eric Cheung.

Exhibit 10.8 INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of October 5, 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and Eric Cheung (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they are

October 8, 2020 EX-1.1

Underwriting Agreement, dated October 5, 2020, between the Company and Credit Suisse Securities (USA) LLC, as representative of the several underwriters.

Exhibit 1.1 EXECUTION VERSION $360,000,000 36,000,000 Units FirstMark Horizon Acquisition Corp. UNDERWRITING AGREEMENT October 5, 2020 Credit Suisse Securities (USA) LLC Eleven Madison Avenue New York, NY 10010 As Representative of the several Underwriters Ladies and Gentlemen: FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), proposes to sell to you and, as applicable,

October 8, 2020 EX-10.4

Administrative Services Agreement, dated October 5, 2020, between the Company and FirstMark Capital LLC.

Exhibit 10.4 EXECUTION VERSION FirstMark Horizon Acquisition Corp. 100 5th Ave, 3rd Floor New York, NY 10011 October 5, 2020 FirstMark Capital LLC 100 5th Ave, 3rd Floor New York, NY 10011 Re: Administrative Services Agreement Gentlemen: This letter agreement by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and FirstMark Capital LLC, a Delaware limited li

October 6, 2020 424B4

$360,000,000 FirstMark Horizon Acquisition Corp. 36,000,000 Units

Filed Pursuant to Rule 424(b)(4) Registration No.: 333-248916 PROSPECTUS $360,000,000 FirstMark Horizon Acquisition Corp. 36,000,000 Units FirstMark Horizon Acquisition Corp. is a newly incorporated blank check company formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses.

October 5, 2020 S-1MEF

- REGISTRATION STATEMENT

As filed with the U.S. Securities and Exchange Commission on October 5, 2020. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 6770 85-2547650 (State or other jurisdiction of incorporation o

October 1, 2020 8-A12B

- FOR REGISTRATION OF CERTAIN CLASSES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 FIRSTMARK HORIZON ACQUISITION CORP. (Exact Name of Registrant as Specified in Its Charter) Delaware 85-2547650 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identi

September 18, 2020 EX-99.8

Consent of Allison Goldberg

Exhibit 99.8 Consent of INDEPENDENT DIRECTOR In connection with the filing by FirstMark Horizon Acquisition Corp. (the “Company”) of its Registration Statement (the “Registration Statement”) on Form S-1 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named as a no

September 18, 2020 S-1

Registration Statement - REGISTRATION STATEMENT ON FORM S-1

As filed with the U.S. Securities and Exchange Commission on September 18, 2020. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FirstMark Horizon Acquisition Corp. (Exact name of registrant as specified in its charter) Delaware 6770 85-2547650 (State or other jurisdiction of incorporatio

September 18, 2020 EX-4.2

Specimen Class A Common Stock Certificate of FirstMark Horizon Acquisition Corp. (incorporated by reference to Exhibit 4.2 to FirstMark Horizon Acquisition Corp.’s registration statement on Form S-1 (File No. 333-251920) filed with the SEC on September 18, 2020).

Exhibit 4.2 NUMBER NUMBER C SHARES SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP FIRSTMARK HORIZON ACQUISITION CORP. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE CLASS A COMMON STOCK This Certifies that is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF CLASS A COMMON STOCK OF THE PAR VALUE OF $0.0001 EACH OF FIRSTMARK HORIZON ACQUISITION CORP. (THE “COMPANY”) transferable on the books of

September 18, 2020 EX-10.6

Form of Sponsor Warrants Purchase Agreement between the Registrant and FirstMark Horizon Sponsor LLC

Exhibit 10.6 PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT THIS PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT (as it may from time to time be amended and including all exhibits referenced herein, this “Agreement”), dated as of [●], 2020, is entered into by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and FirstMark Horizon Sponsor LLC, a Delaware limited

September 18, 2020 EX-1.1

Form of Underwriting Agreement

Exhibit 1.1 $300,000,000 30,000,000 Units FirstMark Horizon Acquisition Corp. UNDERWRITING AGREEMENT [●], 2020 Credit Suisse Securities (USA) LLC Eleven Madison Avenue New York, NY 10010 As Representative of the several Underwriters Ladies and Gentlemen: FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), proposes to sell to you and, as applicable, to the several underwrit

September 18, 2020 EX-99.3

Form of Nominating and Corporate Governance Committee Charter

Exhibit 99.3 CHARTER OF THE NOMINATING AND CORPORATE GOVERNANCE COMMITTEE OF THE BOARD OF DIRECTORS OF FIRSTMARK HORIZON ACQUISITION CORP. EFFECTIVE AS OF [·], 2020 I. PURPOSE OF THE COMMITTEE The purposes of the Nominating and Corporate Governance Committee (the “Committee”) of the Board of Directors (the “Board”) of FirstMark Horizon Acquisition Corp. (the “Company”) shall be to identify and to

September 18, 2020 EX-3.1

Certificate of Incorporation

Exhibit 3.1 Delaware Page 1 The First State I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF INCORPORATION OF “FIRSTMARK HORIZON ACQUISITION CORP.”, FILED IN THIS OFFICE ON THE THIRTEENTH DAY OF AUGUST, A.D. 2020, AT 3:48 O`CLOCK P.M. /s/ Jeffrey W. Bullock Jeffrey W. Bullock, Secretary of State 3440

September 18, 2020 EX-99.5

Consent of Amish Jani

Exhibit 99.5 Consent of INDEPENDENT DIRECTOR In connection with the filing by FirstMark Horizon Acquisition Corp. (the “Company”) of its Registration Statement (the “Registration Statement”) on Form S-1 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named as a no

September 18, 2020 EX-99.6

Consent of Luis Ubiñas

Exhibit 99.6 Consent of INDEPENDENT DIRECTOR In connection with the filing by FirstMark Horizon Acquisition Corp. (the “Company”) of its Registration Statement (the “Registration Statement”) on Form S-1 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named as a no

September 18, 2020 EX-10.1

Promissory Note, dated August 18, 2020, issued to FirstMark Horizon Sponsor LLC

Exhibit 10.1 EXECUTION VERSION THIS PROMISSORY NOTE (THIS “NOTE”) HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”). THIS NOTE HAS BEEN ACQUIRED FOR INVESTMENT ONLY AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF REGISTRATION OF THE RESALE THEREOF UNDER THE SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY IN FORM, SCOPE AND SU

September 18, 2020 EX-10.4

Form of Registration Rights Agreement between the Registrant and certain security holders

Exhibit 10.4 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of [●], 2020, is made and entered into by and among FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), FirstMark Horizon Sponsor LLC, a Delaware limited liability company (the “Sponsor”), and the other parties listed on the signature pages hereto and any person or en

September 18, 2020 EX-10.5

Securities Subscription Agreement, dated August 18, 2020, between the Registrant and FirstMark Horizon Sponsor LLC

Exhibit 10.5 EXECUTION VERSION FirstMark Horizon Acquisition Corp. 100 5th Avenue, 3rd Floor New York, New York 10011 FirstMark Horizon Sponsor LLC August 18, 2020 100 5th Avenue, 3rd Floor New York, New York 10011 RE: Securities Subscription Agreement Ladies and Gentlemen: FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), is pleased to accept the offer FirstMark Horizon

September 18, 2020 EX-4.1

Specimen Unit Certificate of FirstMark Horizon Acquisition Corp. (incorporated by reference to Exhibit 4.1 to the FirstMark Horizon Acquisition Corp.’s registration statement on Form S-1 (File No. 333-251920) filed with the SEC on September 18, 2020).

Exhibit 4.1 NUMBER UNITS U- SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP FIRSTMARK HORIZON ACQUISITION CORP. UNITS CONSISTING OF ONE SHARE OF CLASS A COMMON STOCK AND ONE-THIRD OF ONE REDEEMABLE WARRANT, EACH WHOLE WARRANT ENTITLING THE HOLDER TO PURCHASE ONE SHARE OF CLASS A COMMON STOCK THIS CERTIFIES THAT is the owner of Units. Each Unit (“Unit”) consists of one (1) share of Class A common stock,

September 18, 2020 EX-10.7

Form of Indemnity Agreement

Exhibit 10.7 FORM OF INDEMNITY AGREEMENT THIS INDEMNITY AGREEMENT (this “Agreement”) is made as of , 2020, by and between FIRSTMARK HORIZON ACQUISITION CORP., a Delaware corporation (the “Company”), and (“Indemnitee”). RECITALS WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors, officers or in other capacities unless they are provided with

September 18, 2020 EX-10.8

Form of Administrative Services Agreement by and between the Registrant and an affiliate of the Registrant

Exhibit 10.8 FirstMark Horizon Acquisition Corp. 100 5th Ave, 3rd Floor New York, NY 10011 [•], 2020 FirstMark Capital LLC 100 5th Ave, 3rd Floor New York, NY 10011 Re: Administrative Services Agreement Gentlemen: This letter agreement by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and FirstMark Capital LLC, a Delaware limited liability company (“FirstM

September 18, 2020 EX-3.3

FIRSTMARK HORIZON ACQUISITION CORP. (THE “CORPORATION”) ARTICLE I

Exhibit 3.3 BYLAWS OF FIRSTMARK HORIZON ACQUISITION CORP. (THE “CORPORATION”) ARTICLE I OFFICES Section 1.1. Registered Office. The registered office of the Corporation within the State of Delaware shall be located at either (a) the principal place of business of the Corporation in the State of Delaware or (b) the office of the corporation or individual acting as the Corporation’s registered agent

September 18, 2020 EX-4.4

Form of Warrant Agreement between Continental Stock Transfer & Trust Company and the Registrant

Exhibit 4.4 WARRANT AGREEMENT FIRSTMARK HORIZON ACQUISITION CORP. and CONTINENTAL STOCK TRANSFER & TRUST COMPANY Dated [•], 2020 THIS WARRANT AGREEMENT (this “Agreement”), dated [•], 2020, is by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (in such capacity, the “War

September 18, 2020 EX-99.1

Form of Audit Committee Charter

Exhibit 99.1 CHARTER OF THE AUDIT COMMITTEE OF THE BOARD OF DIRECTORS OF FIRSTMARK HORIZON ACQUISITION CORP. EFFECTIVE AS OF [·], 2020 I. PURPOSE OF THE COMMITTEE The purpose of the Audit Committee (the “Committee”) of the Board of Directors (the “Board”) of FirstMark Horizon Acquisition Corp. (the “Company”) is to provide assistance to the Board in fulfilling its legal and fiduciary obligations w

September 18, 2020 EX-99.9

Consent of Jason Robins

Exhibit 99.9 Consent of INDEPENDENT DIRECTOR In connection with the filing by FirstMark Horizon Acquisition Corp. (the “Company”) of its Registration Statement (the “Registration Statement”) on Form S-1 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named as a no

September 18, 2020 EX-14

Form of Code of Ethics and Business Conduct

Exhibit 14 FORM OF CODE OF ETHICS AND BUSINESS CONDUCT OF FIRSTMARK HORIZON ACQUISITION CORP.

September 18, 2020 EX-10.2

Form of Letter Agreement among the Registrant and its directors and officers and FirstMark Horizon Sponsor LLC

Exhibit 10.2 [●], 2020 FirstMark Horizon Acquisition Corp. 100 5th Ave, 3rd Floor New York, NY 10011 Re: Initial Public Offering Ladies and Gentlemen: This letter (this “Letter Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into or proposed to be entered into by and between FirstMark Horizon Acquisition Corp., a Delaware c

September 18, 2020 EX-99.7

Consent of Frederick Ball

Exhibit 99.7 Consent of INDEPENDENT DIRECTOR In connection with the filing by FirstMark Horizon Acquisition Corp. (the “Company”) of its Registration Statement (the “Registration Statement”) on Form S-1 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named as a no

September 18, 2020 EX-99.2

Form of Compensation Committee Charter

Exhibit 99.2 CHARTER OF THE COMPENSATION COMMITTEE OF THE BOARD OF DIRECTORS OF FIRSTMARK HORIZON ACQUISITION CORP. EFFECTIVE AS OF [·] 2020 I. PURPOSE OF THE COMMITTEE The purposes of the Compensation Committee (the “Committee”) of the Board of Directors (the “Board”) of FirstMark Horizon Acquisition Corp. (the “Company”) shall be to oversee the Company’s compensation and employee benefit plans a

September 18, 2020 EX-3.2

Form of Amended and Restated Certificate of Incorporation

Exhibit 3.2 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF FirstMark Horizon Acquisition Corp. [•], 2020 FirstMark Horizon Acquisition Corp., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), DOES HEREBY CERTIFY AS FOLLOWS: 1. The name of the Corporation is “FirstMark Horizon Acquisition Corp.”. The original certificate of incorporation of the

September 18, 2020 EX-99.4

Consent of Richard Heitzmann

Exhibit 99.4 Consent of INDEPENDENT DIRECTOR In connection with the filing by FirstMark Horizon Acquisition Corp. (the “Company”) of its Registration Statement (the “Registration Statement”) on Form S-1 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named as a no

September 18, 2020 EX-10.3

Form of Investment Management Trust Agreement between Continental Stock Transfer & Trust Company and the Registrant

Exhibit 10.3 INVESTMENT MANAGEMENT TRUST AGREEMENT This Investment Management Trust Agreement (this “Agreement”) is made effective as of [●], 2020, by and between FirstMark Horizon Acquisition Corp., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation (the “Trustee”). WHEREAS, the Company’s registration statement on Form S-1, File No. 333-

August 25, 2020 DRS

-

As submitted confidentially with the U.S. Securities and Exchange Commission on August 25, 2020. This draft registration statement has not been publicly filed with the U.S. Securities and Exchange Commission and all information herein remains strictly confidential. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER TH

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