CLTH / Cleantech Biofuels, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Cleantech Biofuels, Inc.
US ˙ OTCPK

Mga Batayang Estadistika
CIK 1411036
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 Cleantech Biofuels, Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
March 30, 2020 EX-99.1

Securities and Exchange Commission

Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Dear Commissioner, This letter is written in conjunction with a Form 8K submitted by CleanTech Biofuels, Inc.

March 30, 2020 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K/A (Amendment No.

March 30, 2020 8-K

Financial Statements and Exhibits, Other Events

8-K 1 clth202003278k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 30, 2020 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other jurisdict

March 30, 2020 EX-99.1

EX-99.1

November 13, 2019 10-Q

Quarterly Report - FORM 10-Q

10-Q 1 clth2019093010q.htm FORM 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2019 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FR

August 14, 2019 10-Q

CLTH / CleanTech Biofuels, Inc. 10-Q - Quarterly Report - FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2019 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CL

May 15, 2019 10-Q

CLTH / CleanTech Biofuels, Inc. 10-Q Quarterly Report FORM 10-Q

10-Q 1 clth2019033110q.htm FORM 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2019 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM T

April 1, 2019 10-K

CLTH / CleanTech Biofuels, Inc. FORM 10-K (Annual Report)

10-K 1 clth2018123110k.htm FORM 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K [X] ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 [ ] TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file

April 1, 2019 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC, a Missouri limited liability company

April 1, 2019 EX-10.34

Amendment No. 11 dated March 17, 2015 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010.

Exhibit 10.34 AMENDMENT No. 11 TO PROMISSORY NOTE This Amendment No. 11 to the Promissory Note, originally dated September 1, 2010 (the “Note”), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011, March 27, 2012, July 31, 2012, November 1, 2012, January 9, 2013, May 8, 2013, and March 21, 2014 (the “Amendments”), is entered into as of the 17th day of March, 2015, b

April 1, 2019 EX-10.33

Memorandum of Understanding between Cleantech Biofuels, Inc., James Avenue LLC, 25 Van Keuren LLC, and Joseph Smentkowski, Inc. dated October 13, 2014.

Exhibit 10.33 October 13, 2014 James Avenue LLC 3 New York Avenue Jersey City, NJ 07307 25 Van Keuren LLC New York Avenue Jersey City. NJ -07307 Joseph Smentkowski, Inc. 3 New York Avenue Jersey City, NJ 07307 Attn: Mr. Gary Giordano Memorandum of Understanding Dear Mr. Giordano: This Memorandum of Understanding between CleanTech Biofuels., Inc., a Delaware corporation (“CleanTech”), James Avenue

November 13, 2018 10-Q

CLTH / CleanTech Biofuels, Inc. FORM 10-Q (Quarterly Report)

10-Q 1 clth2018093010q.htm FORM 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2018 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FR

August 14, 2018 10-Q

CLTH / CleanTech Biofuels, Inc. FORM 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2018 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CL

May 14, 2018 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2018 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 C

April 2, 2018 10-K

CLTH / CleanTech Biofuels, Inc. FORM 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K [X] ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 [ ] TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels

April 2, 2018 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC, a Missouri limited liability company Van Keuren LLC, a New Jersey limited liability company

November 13, 2017 10-Q

CLTH / CleanTech Biofuels, Inc. FORM 10-Q (Quarterly Report)

10-Q 1 clth2017093010q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2017 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission f

August 14, 2017 10-Q

CLTH / CleanTech Biofuels, Inc. FORM 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2017 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS,

August 3, 2017 CORRESP

CleanTech Biofuels ESP

clth20170803corresp.htm August 2, 2017 Ernest Greene Staff Accountant United States Securities and Exchange Commission 100 F Street, NE Washington, D. C 20549 Via email RE: CleanTech Biofuels, Inc. Form 10-K for the Year Ended December 31, 2016 Filed March 31, 2017 File No. 333-145939 Dear Mr. Greene: On behalf of CleanTech Biofuels, Inc. (the ?Company?), I submit the Company?s response to the com

August 2, 2017 10-K/A

CLTH / CleanTech Biofuels, Inc. FORM 10-K/A (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A (Amendment No. 1) [X] ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2016 [ ] TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofue

May 15, 2017 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2017 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS,

March 31, 2017 EX-21.1

List of Subsidiaries

EX-21.1 2 ex21-1.htm EXHIBIT 21.1 Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC, a Missouri limited liability company Van Keuren LLC, a New Jersey limited liability company

March 31, 2017 10-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K [X] ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2016 [ ] TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, Inc. (Exact Name

November 14, 2016 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2016 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFU

October 14, 2016 8-K

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

Blueprint 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: October 10, 2016 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (

August 8, 2016 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2016 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC.

August 3, 2016 8-K/A

Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K /A Amendment No. 1 CURRENT REPORT Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 23, 2016 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commis

August 3, 2016 EX-10.35

ACQUISITION AGREEMENT by and among GARY GIORDANO and THOMAS GIORDANO, as the Sellers, 25 VAN KEUREN LLC, as the Applicant, CLEANTECH BIOFUELS, INC., as Parent, A WHOLLY OWNED SUBSIDIARY OF THE PARENT, as the Buyer As of June 23, 2016 TABLE OF CONTENT

Blueprint Exhibit 10.35 ACQUISITION AGREEMENT by and among GARY GIORDANO and THOMAS GIORDANO, as the Sellers, 25 VAN KEUREN LLC, as the Applicant, and CLEANTECH BIOFUELS, INC., as Parent, and A WHOLLY OWNED SUBSIDIARY OF THE PARENT, as the Buyer As of June 23, 2016 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 2 Section 1.1 Definitions 2 Section 1.2 List of Defined Terms 5 Section 1.3 References an

June 29, 2016 8-K

Entry into a Material Definitive Agreement, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

tbuff8k.htm 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: June 23, 2016 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (I

June 29, 2016 EX-10.35

ACQUISITION AGREEMENT by and among GARY GIORDANO and THOMAS GIORDANO, as the Sellers, 25 VAN KEUREN LLC, as the Applicant, CLEANTECH BIOFUELS, INC., as Parent, A WHOLLY OWNED SUBSIDIARY OF THE PARENT, as the Buyer As of June 23, 2016

Untitled Document Exhibit 10.35 ACQUISITION AGREEMENT by and among GARY GIORDANO and THOMAS GIORDANO, as the Sellers, 25 VAN KEUREN LLC, as the Applicant, and CLEANTECH BIOFUELS, INC., as Parent, and A WHOLLY OWNED SUBSIDIARY OF THE PARENT, as the Buyer As of June 23, 2016 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 2 Section 1.1 Definitions 2 Section 1.2 List of Defined Terms 5 Section 1.3 Refer

May 9, 2016 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2016 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS,

March 28, 2016 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC, a Missouri limited liability company

March 28, 2016 10-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K [X] ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2015 [ ] TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, Inc. (Exact Name

February 9, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Unregistered Sales of Equity Securities

clth8k.htm 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: February 3, 2016 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction of incorpora

December 30, 2015 8-K

CleanTech Biofuels CURRENT REPORT (Current Report/Significant Event)

clth8k.htm 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: December 29, 2015 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction of incorpor

November 5, 2015 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2015 oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, I

August 6, 2015 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2015 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC.

May 6, 2015 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2015 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC

March 24, 2015 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC, a Missouri limited liability company

March 24, 2015 EX-10.34

Amendment No. 11 dated March 17, 2015 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010.

Exhibit 10.34 AMENDMENT No. 11 TO PROMISSORY NOTE This Amendment No. 11 to the Promissory Note, originally dated September 1, 2010 (the ?Note?), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011, March 27, 2012, July 31, 2012, November 1, 2012, January 9, 2013, May 8, 2013, and March 21, 2014 (the ?Amendments?), is entered into as of the 17th day of March, 2015, b

March 24, 2015 10-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K x ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 oTRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, Inc. (Exact Name of R

December 29, 2014 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: December 29, 2014 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Emplo

November 5, 2014 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2014 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS,

October 17, 2014 EX-10.33

Memorandum of Understanding between Cleantech Biofuels, Inc., James Avenue LLC, 25 Van Keuren LLC, and Joseph Smentkowski, Inc. dated October 13, 2014.

Exhibit 10.33 October 13, 2014 James Avenue LLC 3 New York Avenue Jersey City, NJ 07307 25 Van Keuren LLC New York Avenue Jersey City. NJ -07307 Joseph Smentkowski, Inc. 3 New York Avenue Jersey City, NJ 07307 Attn: Mr. Gary Giordano Memorandum of Understanding Dear Mr. Giordano: This Memorandum of Understanding between CleanTech Biofuels., Inc., a Delaware corporation (“CleanTech”), James Avenue

October 17, 2014 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: October 13, 2014 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employ

August 7, 2014 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2014 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC.

May 8, 2014 10-Q

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

10-Q 1 clth10q.htm QUARTERLY REPORT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2014 oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number

April 21, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Unregistered Sales of Equity Securities

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: April 17, 2014 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer

March 21, 2014 EX-10.32

Amendment No. 10 dated March 21, 2014 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.32 of the Registrant’s annual report on Form 10-K filed on March 21, 2014).

Exhibit 10.32 AMENDMENT No. 10 TO PROMISSORY NOTE This Amendment No. 10 to the Promissory Note, originally dated September 1, 2010 (the “Note”), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011, March 27, 2012, July 31, 2012, November 1, 2012, January 9, 2013, and May 8, 2013 (the “Amendments”), is entered into as of the 21st day of March, 2014, by and between CM

March 21, 2014 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC, a Missouri limited liability company

March 21, 2014 10-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, Inc. (Exact Name of

November 14, 2013 8-K

Submission of Matters to a Vote of Security Holders - 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: November 14, 2013 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction of incorporation) (Com

November 12, 2013 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2013 oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS,

November 12, 2013 EX-10.31

Amended Technology License and Joint Development Agreement, dated November 1, 2013, among CTB Licensing LLC, Biomass North America LLC and Anthony P. Noll (incorporated herein by reference to Exhibit 10.31 of the Registrant’s quarterly report on Form 10-Q filed on November 12, 2013).

EXHIBIT 10.31 AMENDED TECHNOLOGY LICENSE AND JOINT DEVELOPMENT AGREEMENT This Amended Technology License and Joint Development Agreement is made among CTB Licensing, LLC (herein called “CTBL”), Biomass North America, LLC (“Biomass North America”) and Anthony P. Noll (herein called “Noll” and collectively with Biomass North America, the “Licensors”), effective the 1st day of November, 2013 (the “Ef

November 5, 2013 10-K/A

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A (Amendment No. 1) þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2012 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels,

November 5, 2013 CORRESP

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November 5, 2013 Via EDGAR Mr. John Cash Accounting Branch Chief Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Re: CleanTech Biofuels, Inc. Form 10-K for the Year Ended December 31, 2012 Filed March 26, 2013 File No. 333-145939 On behalf of CleanTech Biofuels, Inc. (the “Company”), I submit the Company’s response to the comment letter of the Staff (the “Staff”) of the Se

August 6, 2013 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2013 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC.

May 13, 2013 EX-10.30

Amendment No. 9 dated May 8, 2013 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.30 of the Registrant’s quarterly report on Form 10-Q filed on May 13, 2013).

Exhibit 10.30 AMENDMENT No. 9 TO PROMISSORY NOTE This Amendment No. 9 to the Promissory Note, originally dated September 1, 2010 (the ?Note?), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011, March 27, 2012, July 31, 2012, November 1, 2012 and January 9, 2013 (the ?Amendments?), is entered into as of the 8th day of May, 2013, by and between CMS Acquisition, LLC

May 13, 2013 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 193 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2013 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC.

May 9, 2013 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - 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: May 3, 2013 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer of

March 26, 2013 10-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2012 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, Inc. (Exact Name of

March 26, 2013 EX-21.1

List of Subsidiaries

EXHIBIT 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC

January 10, 2013 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits - 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: January 9, 2013 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employe

January 10, 2013 EX-10.31

Amendment No. 8 dated January 9, 2013 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.31 of the Registrant’s current report on Form 8-K filed on January 10, 2013).

Exhibit 10.31 AMENDMENT No. 8 TO PROMISSORY NOTE This Amendment No. 8 to the Promissory Note, originally dated September 1, 2010 (the “Note”), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011, March 27, 2012, July 31, 2012 and November 1, 2012 (the “Amendments”), is entered into as of the 9th day of January, 2013, by and between CMS Acquisition, LLC (“CMS”) and C

January 2, 2013 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Submission of Matters to a Vote of Security Holders - 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: December 27, 2012 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Emplo

November 6, 2012 EX-10.30

Amendment No. 7 dated November 1, 2012 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.30 of the Registrant’s quarterly report on Form 10-Q filed on November 6, 2012).

EXHIBIT 10.30 AMENDMENT No. 7 TO PROMISSORY NOTE This Amendment No. 7 to the Promissory Note, originally dated September 1, 2010 (the ?Note?), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011, March 27, 2012 and July 31, 2012 (the ?Amendments?), is entered into as of the 1st day of November, 2012, by and between CMS Acquisition, LLC (?CMS?) and CleanTech Biofuels

November 6, 2012 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2012 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM ,TO . Commission file number 333-145939 CLEANTECH BIOFUE

August 6, 2012 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2012 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC.

August 6, 2012 EX-10.29

Amendment No. 6 dated July 31, 2012 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.29 of the Registrant’s quarterly report on Form 10-Q filed on August 6, 2012).

Exhibit 10.29 AMENDMENT No. 6 TO PROMISSORY NOTE This Amendment No. 6 to the Promissory Note, originally dated September 1, 2010 (the ?Note?), previously amended February 11, 2011, May 31, 2011, July 29, 2011, November 7, 2011 and March 27, 2012 (the ?Amendments?), is entered into as of the 31st day of July, 2012, by and between CMS Acquisition, LLC (?CMS?) and CleanTech Biofuels, Inc. (?CTB?). WH

August 6, 2012 EX-33.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of CleanTech Biofuels, Inc. (the "Company") on Form 10-Q for the period ended June 30, 2012, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Thomas Jennewein, Chief Accounting Officer o

June 21, 2012 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - 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: June 18, 2012 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer

June 21, 2012 EX-99.1

CleanTech Biofuels’ Announces New Appointment to Board of Directors

Exhibit 99.1 CleanTech Biofuels’ Announces New Appointment to Board of Directors St. Louis, June 20, 2012 (GLOBE NEWSWIRE)-CleanTech Biofuels, Inc. (OTC: CLTH), an early stage development company focusing on producing cellulosic biomass from municipal solid waste for conversion to renewable energy, advanced biofuels, and bio-based chemicals, has appointed James E. (Jim) Russell to its Board of Dir

June 5, 2012 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits - 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: May 30, 2012 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer o

June 5, 2012 EX-10.30

Engagement Agreement between Cleantech Biofuels, Inc. and Fenton Engineering International dated May 30, 2012 (incorporated herein by reference to Exhibit 10.30 of the Registrant’s current report on Form 8-K filed on June 5, 2012).

Exhibit 10.30 CleanTech Biofuels Municipal Solid Waste Processing Project Execution Summary Phase 1 Project May 30, 2012 Introduction CleanTech Biofuels (CTB) proposes a phased approach to implementing patented and proven autoclave technology to process municipal solid waste (MSW). Blaine Street Partners transfer station in Gary, IN is one possible location for the Phase 1 Project. This technology

May 14, 2012 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2012 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC

April 27, 2012 8-K

- 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: April 23, 2012 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer

April 27, 2012 EX-10.29

Engagement Letter for Funding Services In connection with the investment banking services in relation to the fund raising services in the project energy development and clean-tech market CLEANTECH BIOFUELS Bauhaus Capital Partners

Exhibit 10.29 Engagement Letter for Funding Services In connection with the investment banking services in relation to the fund raising services in the project energy development and clean-tech market between CLEANTECH BIOFUELS And Bauhaus Capital Partners Date April, 23rd 2012 Advisor Mandate (the “Letter”) Contact: Jonas Svensson Ignacio de Torres Javier Herrero CIO COO CEO [email protected]

April 12, 2012 8-K/A

Termination of a Material Definitive Agreement - AMENDMENT NO. 1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: April 11, 2012 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Comm

March 29, 2012 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC

March 29, 2012 EX-10.28

Amendment No. 5 dated March 27, 2012 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.28 of the Registrant’s annual report on Form 10-K for the period ended December 31, 2011).

Exhibit 10.28 AMENDMENT No. 5 TO PROMISSORY NOTE This Amendment No. 5 to the Promissory Note, originally dated September 1, 2010 (the “Note”), previously amended February 11, 2011, May 31, 2011, July 29, 2011 and November 7, 2011 (the “Amendments”), is entered into as of the 27th day of March, 2012, by and between CMS Acquisition, LLC (“CMS”) and CleanTech Biofuels, Inc. (“CTB”). WHEREAS, the Note

March 29, 2012 10-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2011 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, Inc. (Exact Name of

February 15, 2012 8-K

Termination of a Material Definitive Agreement - 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: February 9, 2012 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employ

November 10, 2011 EX-10.27

Amendment No. 4 dated November 7, 2011 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.27 of the Registrant’s current report on Form 8-K filed on November 10, 2011).

Exhibit 10.27 AMENDMENT No. 4 TO PROMISSORY NOTE This Amendment No. 4 to the Promissory Note, originally dated September 1, 2010 (the ?Note?), previously amended February 11, 2011, May 31, 2011 and July 29, 2011 (the ?Amendments?), is entered into as of the 7th day of November, 2011, by and between CMS Acquisition, LLC (?CMS?) and CleanTech Biofuels, Inc. (?CTB?). WHEREAS, the Note is secured by t

November 10, 2011 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: November 7, 2011 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employ

November 10, 2011 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2011 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS,

October 19, 2011 EX-10.26

Form of Director Stock Option Agreement (incorporated herein by reference to Exhibit 10.26 of the Registrant’s current report on Form 8-K filed on October 19, 2011).

EXHIBIT 10.26 FORM OF DIRECTOR STOCK OPTION AGREEMENT THIS AGREEMENT is made and entered into as of the date last below written by and between CleanTech Biofuels, Inc., a Delaware corporation (the ?Company?), and (the ?Optionee?). WHEREAS, the Optionee is a Director of the Company as of , 2011; and WHEREAS, the Company adopted the Company?s 2007 Stock Option Plan (the ?Plan?) under which the Compa

October 19, 2011 8-K

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: October 13, 2011 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employ

August 31, 2011 EX-10.25

Form of Employee Stock Option Agreement entered into with Edward P. Hennessey, Jr. and Tom Jennewein (incorporated herein by reference to Exhibit 10.25 of the Registrant’s current report on Form 8-K filed on August 31, 2011).

Exhibit 10.25 FORM OF STOCK OPTION AGREEMENT THIS AGREEMENT is made and entered into as of the date last below written by and between CleanTech Biofuels, Inc., a Delaware corporation (the “Company”), and (the “Optionee”). WHEREAS, the Company adopted the Company’s 2007 Stock Option Plan (the “Plan”) under which the Company is authorized to grant stock options to certain employees, directors and co

August 31, 2011 8-K

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: August 25, 2011 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employe

August 12, 2011 10-Q

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

10-Q 1 clth10q.htm QUARTERLY REPORT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2011 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number

August 1, 2011 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: July 29, 2011 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer

August 1, 2011 EX-10.24

Amendment No. 3 dated July 29, 2011 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.24 of the Registrant’s current report on Form 8-K filed on August 2, 2011).

Exhibit 10.24 AMENDMENT No. 3 TO PROMISSORY NOTE This Amendment No. 3 to the Promissory Note, originally dated September 1, 2010 (the ?Note?), previously amended February 11, 2011 and May 31, 2011 (the ?Amendments?), is entered into as of the 29th day of July, 2011, by and between CMS Acquisition, LLC (?CMS?) and CleanTech Biofuels, Inc. (?CTB?). WHEREAS, the Note is secured by the CTB owned U.S.

June 1, 2011 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: May 31, 2011 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employer o

June 1, 2011 EX-10.23

Amendment No. 2 dated May 31, 2011 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.23 of the Registrant’s current report on Form 8-K filed on June 1, 2011).

Exhibit 10.23 AMENDMENT No. 2 TO PROMISSORY NOTE This Amendment No. 2 to the Promissory Note, originally dated September 1, 2010 (the “Note”) and amended February 11, 2011 (the “Amendment”) is entered into as of the 31st day of May, 2011, by and between CMS Acquisition, LLC (“CMS”) and CleanTech Biofuels, Inc. (“CTB”). WHEREAS, the Note is secured by the CTB owned U.S. Patent No. 6,306,248 pursuan

May 10, 2011 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2011 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANTECH BIOFUELS, INC

March 29, 2011 EX-21.1

Exhibit 21.1

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation CTB Licensing LLC

March 29, 2011 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Form 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 17, 2011 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): February 11, 2011 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Commis

February 17, 2011 EX-10.22

Amendment dated February 11, 2011 to a Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.22 of the Registrant’s current report on Form 8-K filed on February 16, 2011).

Exhibit 10.22 Exhibit 10.22 AMENDMENT TO PROMISSORY NOTE This Amendment to the Promissory Note, originally dated September 1, 2010 (the “Note”) is entered into as of the 11th day of February, 2011, by and between CMS Acquisition, LLC (“CMS”) and CleanTech Biofuels, Inc. (“CTB”). WHEREAS, the Note is secured by the CTB owned U.S. Patent No. 6,306,248 pursuant to a Security Agreement dated as of Sep

January 5, 2011 8-K/A

Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A 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 29, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Comm

November 12, 2010 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 27, 2010 EX-16.1

Larry O’Donnell, CPA, P.C. Telephone (303) 745-4545 2228 South Fraser Street Fax (303) 369-9384 Unit I Email [email protected] Aurora, Colorado 80014 www.larryodonnellcpa.com

EX-16.1 2 c07369exv16w1.htm EXHIBIT 16.1 Exhibit 16.1 Larry O’Donnell, CPA, P.C. Telephone (303) 745-4545 2228 South Fraser Street Fax (303) 369-9384 Unit I Email [email protected] Aurora, Colorado 80014 www.larryodonnellcpa.com October 25, 2010 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, DC 20549 RE: CleanTech Biofuels, Inc. Ladies and Gentlemen: I have read t

October 27, 2010 8-K

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Commiss

October 18, 2010 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 c06996e8vk.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): October 14, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdict

September 23, 2010 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): September 19, 2010 CLEANTECH BIOF

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): September 19, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporatio

September 8, 2010 EX-10.21

Security Agreement between Cleantech Biofuels, Inc. and CMS Acquisition, LLC dated September 1, 2010 (incorporated herein by reference to Exhibit 10.21 of the Registrant’s current report on Form 8-K filed on September 8, 2010).

Exhibit 10.21 SECURITY AGREEMENT This SECURITY AGREEMENT (this ?Agreement?) is entered into as of the 1st day of September, 2010, by CleanTechBiofuels, Inc., a Delaware corporation (?Debtor?), in favor of CMS Acquisition, LLC (the ?Secured Party?). W I T N E S S E T H: WHEREAS, the Secured Party has agreed to lend Debtor the sum of One Hundred Thousand Dollars ($100,000.00) to be evidenced by that

September 8, 2010 EX-10.20

Promissory Note issued in favor of CMS Acquisition, LLC dated September 1, 2010 (incorporate herein by reference to Exhibit 10.20 of the Registrant’s current report on Form 8-K filed on September 8, 2010).

Exhibit 10.20 PROMISSORY NOTE St. Louis, Missouri September 1, 2010 For value received, the undersigned, CleanTech Biofuels, Inc. (?Borrower?), hereby promises to pay to the order of CMS Acquisition, LLC. or its assigns (?Lender?), One Hundred Thousand Dollars and no cents ($100,000.00) together, with interest from the date hereof until this Note is fully paid, on the principal amount hereunder re

September 8, 2010 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 1, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Commis

August 12, 2010 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

July 14, 2010 EX-99.1

CleanTech Biofuels’ Technology for Converting Municipal Solid Waste to Cellulosic Biomass Feedstock Receives U.S. Patent

Exhibit 99.1 CleanTech Biofuels? Technology for Converting Municipal Solid Waste to Cellulosic Biomass Feedstock Receives U.S. Patent St. Louis, MO., July 8, 2010 ? CleanTech Biofuels, Inc. (Other OTC: CLTH), an early stage provider of cellulosic biomass feedstock derived from municipal solid waste (MSW) for renewable energy and bio-based chemical production, is pleased to announced that the Unite

July 14, 2010 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 8, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Commission

July 7, 2010 EX-99.1

CleanTech Biofuels, Fiberight Agree to Create Municipal Solid Waste to Cellulosic Ethanol Demonstration Plant Cleantech?s Demonstration Vessel to be Installed at Fiberight?s Lawrenceville, Virginia Cellulosic Ethanol Pilot Plant-

Exhibit 99.1 CleanTech Biofuels, Fiberight Agree to Create Municipal Solid Waste to Cellulosic Ethanol Demonstration Plant Cleantech?s Demonstration Vessel to be Installed at Fiberight?s Lawrenceville, Virginia Cellulosic Ethanol Pilot Plant- St. Louis, MO., July 1, 2010 ? CleanTech Biofuels, Inc. (Other OTC: CLTH), an early stage provider of cellulosic biomass feedstock derived from municipal sol

July 7, 2010 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): June 30, 2010 CLEANTECH BIOFUELS,

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): June 30, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (C

July 7, 2010 EX-10.19

June 30, 2010 CONFIDENTIAL

Exhibit 10.19 June 30, 2010 CONFIDENTIAL Edward P. Hennessey Chairman and CEO CleanTech BioFuels, Inc. 7386 Pershing Avenue St. Louis, MO 63130 Dear Ed: This Agreement (the “Agreement”) confirms the understanding between CleanTech Biofuels, Inc., its subsidiaries, and affiliates (collectively, “Client” or the “Company”) and Houlihan Smith & Company, Inc. (“Houlihan” or “Advisor”). We understand th

June 25, 2010 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): June 21, 2010 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Commission

May 13, 2010 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 30, 2010 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A (Amendment No. 1) þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A (Amendment No. 1) þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2009 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 Cl

March 30, 2010 EX-21.1

Exhibit 21.1

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation Biomass North America Licensing, Inc., an Illinois corporation

March 30, 2010 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Form 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 16, 2010 8-K

Financial Statements and Exhibits, 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: February 9, 2010 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employ

February 16, 2010 EX-99.1

CLEANTECH BIOFUELS ANNOUNCES NEW MEMBER OF BOARD OF DIRECTORS

Exhibit 99.1 CLEANTECH BIOFUELS ANNOUNCES NEW MEMBER OF BOARD OF DIRECTORS St. Louis, Mo. ? February 11, 2010 ? CleanTech Biofuels, Inc. (OTC: CLTH), an early-stage provider of technology to convert municipal solid waste (MSW) into sustainable biomass for renewable energy and bio-based chemical production, has appointed Jose (Joe) Bared, Sr. to its Board of Directors. This appointment fills a vaca

November 13, 2009 EX-10.21

Exhibit 10.21

Exhibit 10.21 AMENDMENT TO NOTE AND WARRANT EXCHANGE AGREEMENT This Amendment to Note and Warrant Exchange Agreement (this ?Agreement?) is entered into as of the day of July, 2009, by and between Vertex Energy, Inc. (?Vertex?) and CleanTech Biofuels, Inc. (?CTB?). WHEREAS, effective as of October 22, 2009, CTB and World Waste Technologies, Inc. (?WWT?) entered into a Patent Purchase Agreement (the

November 13, 2009 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 31, 2009 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 25, 2009 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction (Commission (IRS Employe

August 31, 2009 EX-99.1

CLEANTECH BIOFUELS ANNOUNCES NEW MEMBERS OF BOARD OF DIRECTORS

Exhibit 99.1 CLEANTECH BIOFUELS ANNOUNCES NEW MEMBERS OF BOARD OF DIRECTORS St. Louis, Mo. ? August 26, 2009 ? CleanTech Biofuels, Inc. (OTC: CLTH), an early-stage provider of technology to convert municipal solid waste (MSW) into clean sustainable cellulosic biomass for renewable energy production, announced that its stockholders have elected Dr. David Bransby and Dr. Jackson Nickerson to its boa

August 13, 2009 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 15, 2009 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2009 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEAN

April 30, 2009 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A (Amendment No. 1) þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

10-K/A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 7, 2009 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: April 1, 2009 (Date of earliest event reported) CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State of or other jurisdiction of incorporation) (Commiss

March 30, 2009 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2008 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels, In

March 30, 2009 EX-10.20

Form of employee stock purchase agreement entered into with Edward P. Hennessey, Jr., Mike Kime and Tom Jennewein (incorporated herein by reference to Exhibit 10.20 of the Registrant’s annual report on Form 10-K for the period ended December 31, 2008).

Exhibit 10.20 STOCK PURCHASE AGREEMENT THIS STOCK PURCHASE AGREEMENT is entered into as of December 4, 2008, by CleanTech Biofuels, Inc. (the ?Company?) and (the ?Officer?). ARTICLE 1 ACQUISITION OF SHARES 1.1 Sale and Purchase. On the terms and conditions set forth in this Agreement, the Company agrees to sell to the Officer, and Officer agrees to purchase, 60,000 Shares. The sale and purchase sh

March 30, 2009 EX-21.1

Exhibit 21.1

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation Biomass North America Licensing, Inc., an Illinois corporation

March 10, 2009 8-K

Other Events, Termination of a Material Definitive Agreement

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 10, 2009 CLEANTECH BIOFUELS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 0-24293 33-0754902 (Commission F

February 24, 2009 424B3

CLEANTECH BIOLFUELS, INC. 18,880,133 Shares of Common Stock

Prospectus Supplement No. 2 Filed Pursuant to Rule 424(b)(3) (To Prospectus dated January 2, 2008) Registration No. 333-145939 CLEANTECH BIOLFUELS, INC. 18,880,133 Shares of Common Stock This prospectus supplement no. 2, which we refer to herein as this prospectus supplement, supplements and amends the prospectus dated January 2, 2008 (as amended and supplemented by the prospectus supplement dated

November 13, 2008 EX-10.18

Technology License and Joint Development Agreement among Biomass North America Licensing, Inc., Biomass North America, LLC and Anthony P. Noll (incorporated herein by reference to Exhibit 10.18 of the Registrant’s quarterly report on Form 10-Q for the period ended September 30, 2008).

Exhibit 10.18 TECHNOLOGY LICENSE AND JOINT DEVELOPMENT AGREEMENT This Technology License and Joint Development Agreement is made among Biomass North American Licensing, Inc. (herein called “BNAL”), Biomass North America, LLC (“Biomass North America”) and Anthony P. Noll (herein called “Noll” and collectively with Biomass North America, the “Licensors”), effective the day of July, 2008 (the “Effect

November 13, 2008 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by Bowne Pure Compliance Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 27, 2008 EX-10.17

SECURITY AGREEMENT

Exhibit 10.17 SECURITY AGREEMENT This SECURITY AGREEMENT (this ?Agreement?) is entered into as of the 22nd day of October, 2008, by CleanTechBiofuels, Inc., a Delaware corporation (?Debtor?), in favor of World Waste Technologies, Inc. (the ?Secured Party?). W I T N E S S E T H: WHEREAS, pursuant to that certain Patent Purchase Agreement between Debtor and the Secured Party of even date herewith (t

October 27, 2008 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by Bowne Pure Compliance Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 27, 2008 EX-10.16

PROMISSORY NOTE Cupertino, California October 22, 2008

Exhibit 10.16 PROMISSORY NOTE Cupertino, California October 22, 2008 For value received, the undersigned, CleanTech Biofuels, Inc. (“Borrower”), hereby promises to pay to the order of World Waste Technologies, Inc. or its assigns (“Lender”), $450,000.00 together, with interest from the date hereof until this Note is fully paid, on the principal amount hereunder remaining unpaid from time to time,

October 27, 2008 EX-10.15

Patent Purchase Agreement dated October 22, 2008 by and between Cleantech Biofuels, Inc. and World Waste Technologies, Inc. (incorporated herein by reference to Exhibit 10.15 of the Registrant’s current report on Form 8-K filed on October 27, 2008).

Exhibit 10.15 PATENT PURCHASE AGREEMENT This Patent Purchase Agreement (this ?Agreement?), between World Waste Technologies, Inc., a California corporation (the ?Seller?), and CleanTech Biofuels, Inc., a Delaware corporation (the ?Buyer?), is entered into as of October 22, 2008 (the ?Effective Date?). The Seller and the Buyer together may be referred to herein as the ?Parties? and each of them may

October 27, 2008 EX-2.1

Exhibit 2.1

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER AND REORGANIZATION AGREEMENT AND PLAN OF MERGER AND REORGANIZATION (this ?Agreement?), dated as of July 14, 2008, by and among CleanTech Biofuels, Inc., a Delaware corporation (the ?Parent?), Biomass NA Acquisition Subsidiary, Inc., a Delaware corporation (the ?Acquisition Subsidiary?) and Biomass North America Licensing, Inc., an Illinois corporation (the

October 27, 2008 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 22, 2008 CLEANTECH BIOFUE

Filed by Bowne Pure Compliance UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 27, 2008 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by Bowne Pure Compliance Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 24, 2008 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): October 24, 2008 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdiction of Incorporation) (Commiss

September 19, 2008 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

8-K 1 c75407e8vk.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): September 15, 2008 CLEANTECH BIOFUELS, INC. (Exact name of registrant as specified in its charter) Delaware 333-145939 33-0754902 (State or other Jurisdi

August 13, 2008 EX-2.1

Agreement and Plan of Merger and Reorganization by and among Cleantech Biofuels, Inc., Biomass NA Acquisition Subsidiary, Inc. and Biomass North America Licensing, Inc. dated as of July 14, 2008 (incorporated herein by reference to Exhibit 2.1 of the Registrant’s quarterly report on Form 10-Q for the period ended June 30, 2008).

Filed by Bowne Pure Compliance Exhibit 2.1 AGREEMENT AND PLAN OF MERGER AND REORGANIZATION AGREEMENT AND PLAN OF MERGER AND REORGANIZATION (this “Agreement”), dated as of July 14, 2008, by and among CleanTech Biofuels, Inc., a Delaware corporation (the “Parent”), Biomass NA Acquisition Subsidiary, Inc., a Delaware corporation (the “Acquisition Subsidiary”) and Biomass North America Licensing, Inc.

August 13, 2008 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2008 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 333-145939 CLEANT

May 15, 2008 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by Bowne Pure Compliance Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 29, 2008 DEF 14A

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

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

March 28, 2008 EX-14

Code of Ethics (incorporated herein by reference to Exhibit 14 of the Registrant’s annual report on Form 10-KSB for the period ended December 31, 2007).

Exhibit 14 CODE OF ETHICS FOR EMPLOYEES AND DIRECTORS OF CLEANTECH BIOFUELS, INC. AND SUBSIDIARY It is the policy of CleanTech Biofuels, Inc. (“CTB”) that all members of the Board of Directors (the “Directors”) and all employees (the “Employees”) of CTB and of each subsidiary of CTB (collectively, the “Company”), advocate and adhere to the following principles governing their professional and ethi

March 28, 2008 10KSB

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-KSB þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-KSB þ ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2007 o TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 333-145939 CleanTech Biofuels,

March 28, 2008 EX-21.1

Exhibit 21.1

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., a Delaware corporation

March 25, 2008 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K 1 cltech8k032408.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): March 25, 2008 CLEANTECH BIOFUELS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation

March 25, 2008 EX-10.1

SUBLICENSE AGREEMENT SRS ENERGY, INC., CLEANTECH BIOFUELS, INC METHODS AND APPARATUS FOR TREATING BIOMASS MATERIAL

Exhibit 10.1 HFTA Livermore California SUBLICENSE AGREEMENT AMONG SRS ENERGY, INC., CLEANTECH BIOFUELS, INC AND HFTA FOR METHODS AND APPARATUS FOR TREATING BIOMASS MATERIAL U.S. Patent Nos.: 5,221,357, 5,366,558, 5,536,325, 5,628,830, and 6,019,900 HFTA LIVERMORE, CALIFORNIA SUBLICENSE AGREEMENT FOR METHODS AND APPARATUS FOR TREATING BIOMASS MATERIAL U.S. Patent Nos.: 5,221,357, 5,366,558, 5,536,3

January 10, 2008 424B3

18,880,133 Shares Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-145939 Prospectus 18,880,133 Shares Common Stock This prospectus covers the resale by selling stockholders named on page 47 of up to 18,880,133 shares of our common stock, $0.001 par value per share, which include: · 11,013,333 shares of common stock underlying our Series A Convertible Debentures issued in 2007 having a fixed conversion rate of

January 10, 2008 424B3

CLEANTECH BIOLFUELS, INC. 18,880,133 Shares of Common Stock

Prospectus Supplement No. 1 Filed Pursuant to Rule 424(b)(3) (To Prospectus dated January 2, 2008) Registration No. 333-145939 CLEANTECH BIOLFUELS, INC. 18,880,133 Shares of Common Stock This prospectus supplement supplements the prospectus dated January 2, 2008, relating to the offer and sale by the selling stockholders identified in the prospectus of up to 18,880,133 shares of common stock of Cl

January 10, 2008 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 9, 2008 CLEANTECH BIOFUELS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 333-145939 33-0754902 (Commissi

December 31, 2007 CORRESP

CLEANTECH BIOFUELS, INC.

CLEANTECH BIOFUELS, INC. 7320 FORSYTH, UNIT 102 ST. LOUIS, MISSOURI 63105 December 31, 2007 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: Jennifer Hardy, Branch Chief Re: CleanTech Biofuels, Inc. (the ?Company?) Registration Statement on Form SB-2, Commission File No. 333-145939 (the ?Registration Statement?) Ladie

December 19, 2007 CORRESP

CLEANTECH BIOFUELS, INC.

CLEANTECH BIOFUELS, INC. 7320 FORSYTH, UNIT 102 ST. LOUIS, MISSOURI 63105 December 19, 2007 VIA EDGAR TRANSMISSION Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-7010 Attn: Ms. Jennifer Hardy Branch Chief Division of Corporation Finance Re: CleanTech Biofuels, Inc. Registration Statement on Form SB-2 File No. 333-145939 Dear Ms. Hardy: We are filing herewith, via EDGA

December 19, 2007 SB-2/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 3 TO FORM SB-2 REGISTRATION STATEMENT The Securities Act of 1933 CLEANTECH BIOFUELS, INC. (Name of Small Business Issuer in Its Charter)

As filed with the Securities and Exchange Commission on December 19, 2007 Registration No.

November 30, 2007 CORRESP

CLEANTECH BIOFUELS, INC.

CLEANTECH BIOFUELS, INC. 7320 FORSYTH, UNIT 102 ST. LOUIS, MISSOURI 63105 November 30, 2007 VIA EDGAR TRANSMISSION Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-7010 Attn: Ms. Jennifer Hardy Branch Chief Division of Corporation Finance Re: CleanTech Biofuels, Inc. Registration Statement on Form SB-2 File No. 333-145939 Dear Ms. Hardy: We are filing herewith, via EDGA

November 30, 2007 SB-2/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 2 TO FORM SB-2 REGISTRATION STATEMENT The Securities Act of 1933 CLEANTECH BIOFUELS, INC. (Name of Small Business Issuer in Its Charter)

As filed with the Securities and Exchange Commission on November 30, 2007 Registration No.

November 30, 2007 EX-10.13

Commercial Lease with Pershing Properties, LLC dated October 12, 2007 (incorporated herein by reference to Exhibit 10.13 of the Registrant’s registration statement on Form SB-2/A filed on November 30, 2007, File No. 333-145939).

Exhibit 10.13 COMMERCIAL LEASE This Lease, made and entered into, this 12th day of October, 2007 by and between Pershing Properties, LLC Parties hereinafter called Lessor/Landlord and Cleantech Biofuels, Inc. Hereinafter called Lessee/Tenant WITNESSETH, That the said Lessor for and in consideration of the rents, covenants and Agreements hereinafter mentioned and hereby agreed to be paid, kept and

October 24, 2007 SB-2/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM SB-2 REGISTRATION STATEMENT The Securities Act of 1933 CLEANTECH BIOFUELS, INC. (Name of Small Business Issuer in Its Charter)

As filed with the Securities and Exchange Commission on October 24, 2007 Registration No.

October 24, 2007 CORRESP

CLEANTECH BIOFUELS, INC.

CLEANTECH BIOFUELS, INC. 7320 FORSYTH, UNIT 102 ST. LOUIS, MISSOURI 63105 October 24, 2007 VIA EDGAR TRANSMISSION Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-7010 Attn: Ms. Jennifer Hardy Branch Chief Division of Corporation Finance Re: CleanTech Biofuels, Inc. Registration Statement on Form SB-2 File No. 333-145939 Dear Ms. Hardy: We are filing herewith, via EDGAR

September 10, 2007 EX-4.1

SERIES A CONVERTIBLE DEBENTURE DUE APRIL 16, 2010

Exhibit 4.1 NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS CONVERTIBLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGIST

September 10, 2007 EX-10.10

Employment Agreement – Edward P. Hennessey, Jr. (incorporated herein by reference to Exhibit 10.10 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.10 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT is made and entered into as of the date last written below, between CLEANTECH BIOFUELS, INC., a Delaware corporation (the ?Company?), and Edward P. Hennessey, Jr. (the ?Employee?). WHEREAS, the Company desires to retain the services of Employee as Chief Executive Officer, and Employee desires to be employed by the Company as Chief Execut

September 10, 2007 EX-10.5

CLIENT PROFESSIONAL SERVICES Merrick & Company Alternative Ethanol Technologies, Inc. Table of Contents

Exhibit 10.5 CLIENT AGREEMENT FOR PROFESSIONAL SERVICES Between Merrick & Company and Alternative Ethanol Technologies, Inc. Table of Contents Article 1 Merrick?s Services and Personnel 3 Article 2 Compensation 4 Article 3 Changes to Scope of Work, Suspension 4 Article 4 Technical and Contractual Representatives 5 Article 5 Client Responsibilities 5 Article 6 Records, Audit and Documents 6 Article

September 10, 2007 EX-4.2

Investors’ Rights Agreement dated as of April 16, 2007 by and among SRS Energy, Inc. and certain Investors (incorporated herein by reference to Exhibit 4.2 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 4.2 INVESTORS' RIGHTS AGREEMENT THIS INVESTORS' RIGHTS AGREEMENT is made as of the 10th day of April, 2007, by and among SRS Energy, Inc., a Delaware corporation (the "Company"), and the parties listed on Schedule A hereto each of which such parties is herein referred to as a "Holder." RECITALS WHEREAS, the Company and the certain Holders (the ?Investors?) are parties to the Series A Deben

September 10, 2007 EX-4.4

WARRANT FOR THE PURCHASE OF SHARES OF COMMON STOCK ALTERNATIVE ETHANOL TECHNOLOGIES, INC. (a Delaware corporation) DATED AS OF MAY 31, 2007 VOID AFTER 5:00 P.M., CENTRAL STANDARD TIME, ON AUGUST 31, 2009

Exhibit 4.4 WARRANT FOR THE PURCHASE OF SHARES OF COMMON STOCK OF ALTERNATIVE ETHANOL TECHNOLOGIES, INC. (a Delaware corporation) DATED AS OF MAY 31, 2007 VOID AFTER 5:00 P.M., CENTRAL STANDARD TIME, ON AUGUST 31, 2009 Alternative Ethanol Technologies, Inc., a Delaware corporation (the “Company”), hereby certifies that William Meyer (“Warrant Holder”), is entitled, subject to the terms set forth b

September 10, 2007 EX-3.1

Restated Certificate of Incorporation (incorporated herein by reference to Exhibit 3.1 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 3.1 RESTATED CERTIFICATE OF INCORPORATION OF ALTERNATIVE ETHANOL TECHNOLOGIES, INC. This Restated Certificate of Incorporation has been duly adopted by the Corporations Board of Directors and Stockholders in accordance with the applicable provisions of Section 242 and 245 of the General Corporation Law of the State of Delaware. ARTICLE 1 Name The name this Corporation was initially organiz

September 10, 2007 EX-10.11

Form of Employee Agreement – Tom Jennewein (incorporated herein by reference to Exhibit 10.11 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.11 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT is made and entered into as of the date last written below, between CLEANTECH BIOFUELS, INC., a Delaware corporation (the ?Company?), and Tom Jennewein (the ?Employee?). WHEREAS, the Company desires to retain the services of Employee as Chief Financial Officer, and Employee desires to be employed by the Company as Chief Financial Officer

September 10, 2007 SB-2

UNITED STATES

As filed with the Securities and Exchange Commission on September 7, 2007 Registration No.

September 10, 2007 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries SRS Energy, Inc., Delaware corporation

September 10, 2007 EX-10.4

Technology License Agreement between Bio Products International, Inc. and SRS Energy, Inc. dated as of March 8, 2007 (incorporated herein by reference to Exhibit 10.4 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.4 TECHNOLOGY LICENSE AGREEMENT This Technology License Agreement (the ?Agreement?) is made and entered into March 8, 2007 between S-R-S Energy, Inc., a Company incorporated under the laws of the State of Delaware (?SRS? or the ?Licensor?), and Bio-Products International, Inc. (?Bio-Products? or the ?Licensee?), a Company incorporated under the laws of the State of Alabama. The Licensor

September 10, 2007 EX-10.3

TECHNOLOGY LICENSE AGREEMENT

Exhibit 10.3 TECHNOLOGY LICENSE AGREEMENT This Technology License Agreement (the ?Agreement?) is made and entered into 8/17 , 2005 between Bio-Products International, Inc. (?Bio-Products?), a Company incorporated under the laws of the State of Alabama (the ?Licenser), and SRS Energy, Inc., a Company incorporated under the laws of the State of Delaware (the ?Licensee?). The Licensor and Licensee ma

September 10, 2007 EX-10.8

Form of Director Stock Option Agreement (incorporated herein by reference to Exhibit 10.8 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.8 STOCK OPTION AGREEMENT THIS AGREEMENT is made and entered into as of the date last below written by and between CleanTech Biofuels, Inc., a Delaware corporation (the ?Company?), and (the ?Optionee?). WHEREAS, the Optionee was made a Director of the Company as of the day of , 2007; and WHEREAS, the Company, in order to induce the Optionee to accept a position as a Director of the Compa

September 10, 2007 EX-4.3

SRS ENERGY, INC. SERIES A DEBENTURE PURCHASE AGREEMENT

Exhibit 4.3 SRS ENERGY, INC. SERIES A DEBENTURE PURCHASE AGREEMENT THIS SERIES A DEBENTURE PURCHASE AGREEMENT is made as of the 20th day of March, 2007, by and among SRS Energy, Inc., a Delaware corporation (the "Company"), and the investors severally and not jointly listed on Schedule A hereto, each of which is herein referred to as an "Investor." THE PARTIES HEREBY AGREE AS FOLLOWS: 1. Purchase

September 10, 2007 EX-3.2

Restated By-Laws (incorporated herein by reference to Exhibit 3.2 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 3.2 RESTATED BY-LAWS OF CLEANTECH BIOFUELS, INC. (A Delaware Corporation) ARTICLEI Offices and Records ARTICLE II Corporate Seal ARTICLE III Stockholders ARTICLE IV Directors ARTICLE V Officers ARTICLE VI Shares of Stock ARTICLE VII Indemnification ARTICLE VIII General Provisions (Restated as of August 21, 2007) ARTICLE I Offices and Records Section 1. Registered Office and Registered Agen

September 10, 2007 EX-10.9

Director Stock Purchase Agreement (incorporated herein by reference to Exhibit 10.9 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.9 DIRECTORS STOCK PURCHASE AGREEMENT THIS DIRECTORS STOCK PURCHASE AGREEMENT is entered into as of , 2007, by CleanTech Biofuels, Inc. (the ?Company?) and (the ?Director?). ARTICLE 1 ACQUISITION OF SHARES 1.1 Sale and Purchase. On the terms and conditions set forth in this Agreement, the Company agrees to sell to the Director, and Director agrees to purchase, 150,000 Shares. The sale an

September 10, 2007 EX-10.2

AMENDMENT TO EXCLUSIVE LICENSING AGREEMENT Extension of Trial Period

Exhibit 10.2 AMENDMENT TO EXCLUSIVE LICENSING AGREEMENT Extension of Trial Period This Agreement is made January l1th, 2006 by and between Brelsford Engineering, a Montana corporation, whose operating office is located at 8655 Bridger Canyon Road, Bozeman, MT 59715 (hereinafter the ?LICENSOR?) and SRS Energy, Inc., a Delaware corporation, whose operating office is located at 7320 Forsyth, Unit 102

September 10, 2007 EX-10.6

Consulting Fee Agreement

Exhibit 10.6 FIVE SIGMA LTD Consulting Fee Agreement This Consulting Fee Agreement is made as of the 17th day of April, 2007 by BETWEEN: Alternative Ethanol Technologies, Inc. (Hereinafter referred to as the Company) OF THE FIRST PART; And ? Five Sigma Ltd. (Hereinafter called the Consultant) OF THE SECOND PART WHEREAS the Company is desirous of engaging the services of the Consultant to provide s

September 10, 2007 EX-10.1

BRELSFORD ENGINEERING, INC. 8655 BRIDGER CANYON RD. BOZEMAN, MONTANA EXCLUSIVE LICENSE AGREEMENT

Exhibit 10.1 BRELSFORD ENGINEERING, INC. 8655 BRIDGER CANYON RD. BOZEMAN, MONTANA EXCLUSIVE LICENSE AGREEMENT A. Parties to This Agreement THIS EXCLUSIVE LICENSE AGREEMENT is made this 1st day of April 2005 by and between: LICENSOR: BRELSFORD ENGINEERING, INC. Having its principal place of business at: 8655 BRIDGER CANYON RD. BOZEMAN, MONTANA 59715 And LICENSEE: SRS Energy, Inc. Having its princip

September 10, 2007 EX-10.7

2007 Stock Option Plan (incorporated herein by reference to Exhibit 10.7 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.7 CLEANTECH BIOFUELS, INC. (f/k/a SRS Energy, Inc.) 2007 STOCK OPTION PLAN (As Adopted Effective April 16, 2007) CLEANTECH BIOFUELS, INC. 2007 STOCK OPTION PLAN ARTICLE 1. INTRODUCTION. The Plan was adopted by the Board effective April 16, 2007. The purpose of the Plan is to promote the long-term success of the Company and the creation of stockholder value by (a) encouraging Employees,

September 10, 2007 EX-10.12

Form of Employee Stock Option Agreement – Tom Jennewein (incorporated herein by reference to Exhibit 10.12 of the Registrant’s registration statement on Form SB-2 filed on September 10, 2007, File No. 333-145939).

Exhibit 10.12 TOM JENNEWEIN STOCK OPTION AGREEMENT THIS AGREEMENT is made and entered into as of the date last below written by and between CleanTech Biofuels, Inc., a Delaware corporation (the ?Company?), and Tom Jennewein (the ?Optionee?). WHEREAS, the Optionee was hired as Chief Financial Officer of the Company as of the day of August, 2007; and WHEREAS, the Company, in order to induce the Opti

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