TECOGEN INC. Contracts & Agreements

Earnings Release dated May 1 (Filed With SEC on May 11, 2023)

Tecogen Inc. 2022 Stock Incentive Plan (Filed With SEC on March 9, 2022)

Form of Incentive Stock Option Award Agreement (Employee Form) (Filed With SEC on March 9, 2022)

Form of Non-Qualified Stock Option Award Agreement (Employee Form) (Filed With SEC on March 9, 2022)

Form of Restricted Stock Award Agreement (Filed With SEC on March 9, 2022)

Tecogen Inc. Policy Regarding Compensation of Non-Employee Directors (Filed With SEC on March 9, 2022)

Form of Non-Qualified Stock Option Award Agreement (Non-Employee Director Form) (Filed With SEC on March 9, 2022)

Webster Bank, NA letter dated January 11, 2021, confirming receipt of payment in full of registrant's obligation under the Paycheck Protection Loan dated April 17, 2020 (Filed With SEC on March 18, 2021)

Loan Documentation for Paycheck Protection Program Loan through Webster Bank dated April 17, 2020 (Filed With SEC on May 14, 2020)

Description of Registrant's Securities (Filed With SEC on March 12, 2020)

Waiver No. 2 under Credit Agreement dated May 4, 2018 (Filed With SEC on March 12, 2020)

Letter Agreement dated July 22, 2019 between Registrant and John N. Hatsopoulos amending Advisory Agreement (Filed With SEC on July 25, 2019)

Transition Agreement dated as of June 6, 2019 by and between Tecogen Inc. and Ms. Bonnie Brown (Filed With SEC on June 10, 2019)

Waiver No. 2 under Credit Agreement dated May 4, 2018 (Filed With SEC on March 29, 2019)

Amendment No. 2 to, and Waiver No. 3 under, Credit Agreement dated as of March 5, 2019 (Filed With SEC on March 8, 2019)

Membership Interest Purchase Agreement dated as of December 14, 2018 between American DG Energy, Inc. and SDCL TG Cogen LLC (Filed With SEC on March 8, 2019)

Guaranty Agreement by Tecogen Inc. dated as of December 14, 2018 relating to Membership Interest Purchase Agreement dated December 14, 2018 (Filed With SEC on March 8, 2019)

Membership Interest Purchase Agreement dated as of March 5, 2019 between American DG Energy, Inc. and SDCL TG Cogen LLC (Filed With SEC on March 8, 2019)

Guaranty Agreement by Tecogen Inc. dated as of March 5, 2019 relating to Membership Interest Purchase Agreement dated March 5, 2019 (Filed With SEC on March 8, 2019)

Billing and Asset Management Agreement dated as of March 5, 2019 by and between Tecogen Inc. and CogenTwo LLC (Filed With SEC on March 8, 2019)

Billing and Asset Management Agreement by and between Tecogen Inc. and CogenOne LLC, as amended and restated as of March 5, 2019 (Filed With SEC on March 8, 2019)

Tecogen Inc. 2006 Stock Incentive Plan, as amended and restated on November 1, 2016 with stockholder approval on June 29, 2017 (Filed With SEC on March 21, 2018)

Advisor and Retirement Agreement between Tecogen Inc. and John Hatsopoulos, dated January 3, 2018 (Filed With SEC on January 8, 2018)

AMENDMENT NO. 1 TO AGREEMENT AND PLAN OF MERGER (Filed With SEC on March 24, 2017)

TECOGEN INC. TECOGEN.ADGE ACQUISITION CORP. AMERICAN DG ENERGY INC. AGREEMENT AND PLAN OF MERGER Dated as of November 1, 2016 (Filed With SEC on November 2, 2016)

First Amendment to Warrant Agreement (Filed With SEC on June 30, 2016)

JOINT VENTURE AGREEMENT (Filed With SEC on May 24, 2016)

LIMITED LIABILITY COMPANY AGREEMENT among TTcogen LLC and THE MEMBERS NAMED HEREIN dated as of May 19, 2016 (Filed With SEC on May 24, 2016)

Tecogen Inc. Ilios Inc. Share Exchange Agreement (Filed With SEC on April 15, 2016)

AMENDMENT NO. 1 TO SENIOR CONVERTIBLE PROMISSORY NOTE (Filed With SEC on April 15, 2016)

________________________________________________________________________________________________ WARRANT TO PURCHASE SHARES OF COMMON STOCK OF TECOGEN INC.... (Filed With SEC on March 30, 2016)

TECOGEN INC and ULTRA EMISSIONS TECHNOLOGIES LIMITED JOINT VENTURE SHAREHOLDER AGREEMENT (Filed With SEC on December 31, 2015)

LICENSE AGREEMENT (Filed With SEC on December 31, 2015)

TECOGEN INC. Subscription Agreement (Filed With SEC on December 31, 2015)

WARRANT TO PURCHASE SHARES OF COMMON STOCK OF TECOGEN INC. (Filed With SEC on December 31, 2015)

[Signature page to follow] (Filed With SEC on August 13, 2015)

TECOGEN INC. 2006 STOCK INCENTIVE PLAN (As Amended On January 24, 2014) (Filed With SEC on August 6, 2015)

NON-REVOLVING LINE OF CREDIT NOTE June 15, 2015 (Filed With SEC on August 6, 2015)

SUBSCRIPTION AGREEMENT (Filed With SEC on August 6, 2015)

SHELF REGISTRATION RIGHTS AGREEMENT (Filed With SEC on August 6, 2015)

NON-REVOLVING LINE OF CREDIT NOTE June 15, 2015 (Filed With SEC on June 18, 2015)

TECOGEN INC. 2006 STOCK INCENTIVE PLAN (As Amended On January 24, 2014) (Filed With SEC on March 25, 2015)

CONSULTING AGREEMENT (Filed With SEC on August 29, 2014)

TECOGEN INC. 2006 STOCK INCENTIVE PLAN (As Amended and Restated on June 30, 2014) (Filed With SEC on August 14, 2014)

FACILITIES, SUPPORT SERVICES, and BUSINESS AGREEMENT August 8, 2014 (Filed With SEC on August 14, 2014)

FORM OF Stock Option Agreement under Tecogen Inc. 2006 Stock Incentive Plan (Filed With SEC on June 27, 2014)

TECOGEN INC. 2006 STOCK INCENTIVE PLAN (As Amended On November 10, 2011) (Filed With SEC on June 27, 2014)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on June 27, 2014)

FIRST AMENDMENT TO THE FACILITIES, SUPPORT SERVICES, AND BUSINESS AGREEMENT (Filed With SEC on June 27, 2014)

SECOND AMENDMENT TO THE FACILITIES, SUPPORT SERVICES, AND BUSINESS AGREEMENT (Filed With SEC on June 27, 2014)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on June 27, 2014)

Atlantic-Waltham Investment II, LLC Commercial Lease (Filed With SEC on June 27, 2014)

SECOND AMENDMENT TO LEASE (Filed With SEC on June 27, 2014)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on June 27, 2014)

FIRST AMENDMENT TO THE SALES REPRESENTATIVE AGREEMENT (Filed With SEC on June 27, 2014)

FIRST AMENDMENT TO THE REVOLVING LINE OF CREDIT AGREEMENT (Filed With SEC on June 27, 2014)

TECOGEN INC. COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on June 27, 2014)

COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on June 27, 2014)

SENIOR CONVERTIBLE PROMISSORY NOTE (Filed With SEC on June 27, 2014)

COLLECTIVE BARGAINING AGREEMENT BETWEEN INTERNATIONAL UNION OF OPERATING ENGINEERS, LOCAL 68, 68A, 68B AND TECOGEN, INC. TERM OF AGREEMENT January 1, 2014 December 31, 2016 (Filed With SEC on June 27, 2014)

TECOGEN INC. PROMISSORY NOTE LINE OF CREDIT (Filed With SEC on June 27, 2014)

FORM OF Stock Option Agreement under Tecogen Inc. 2006 Stock Incentive Plan (Filed With SEC on June 20, 2014)

TECOGEN INC. 2006 STOCK INCENTIVE PLAN (As Amended On November 10, 2011) (Filed With SEC on June 20, 2014)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on June 20, 2014)

FIRST AMENDMENT TO THE FACILITIES, SUPPORT SERVICES, AND BUSINESS AGREEMENT (Filed With SEC on June 20, 2014)

SECOND AMENDMENT TO THE FACILITIES, SUPPORT SERVICES, AND BUSINESS AGREEMENT (Filed With SEC on June 20, 2014)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on June 20, 2014)

Atlantic-Waltham Investment II, LLC Commercial Lease (Filed With SEC on June 20, 2014)

SECOND AMENDMENT TO LEASE (Filed With SEC on June 20, 2014)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on June 20, 2014)

FIRST AMENDMENT TO THE SALES REPRESENTATIVE AGREEMENT (Filed With SEC on June 20, 2014)

FIRST AMENDMENT TO THE REVOLVING LINE OF CREDIT AGREEMENT (Filed With SEC on June 20, 2014)

TECOGEN INC. COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on June 20, 2014)

COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on June 20, 2014)

SENIOR CONVERTIBLE PROMISSORY NOTE (Filed With SEC on June 20, 2014)

COLLECTIVE BARGAINING AGREEMENT BETWEEN INTERNATIONAL UNION OF OPERATING ENGINEERS, LOCAL 68, 68A, 68B AND TECOGEN, INC. TERM OF AGREEMENT January 1, 2014 December 31, 2016 (Filed With SEC on June 20, 2014)

TECOGEN INC. PROMISSORY NOTE LINE OF CREDIT (Filed With SEC on June 20, 2014)

TECOGEN INC. Up to 2,000,000 Shares Common Stock PLACEMENT AGENT AGREEMENT (Filed With SEC on May 20, 2014)

Exhibit 4.1 - Page 1 (Filed With SEC on May 20, 2014)

SECOND AMENDMENT TO LEASE (Filed With SEC on May 15, 2014)

TECOGEN INC. Up to2,000,000 Shares CommonStock PLACEMENT AGENT AGREEMENT (Filed With SEC on April 17, 2014)

annexI TERMS AND CONDITIONS FOR PURCHASE OF SECURITIES (Filed With SEC on April 17, 2014)

COLLECTIVE BARGAINING AGREEMENT BETWEEN INTERNATIONAL UNION OF OPERATING ENGINEERS, LOCAL 68, 68A, 68B AND TECOGEN, INC. TERM OF AGREEMENT January 1, 2014 December 31, 2016 (Filed With SEC on March 31, 2014)

TECOGEN INC. PROMISSORY NOTE LINE OF CREDIT (Filed With SEC on March 31, 2014)

SENIOR CONVERTIBLE PROMISSORY NOTE (Filed With SEC on December 30, 2013)

SECOND AMENDMENT TO THE FACILITIES, SUPPORT SERVICES, AND BUSINESS AGREEMENT (Filed With SEC on November 14, 2013)

FIRST AMENDMENT TO THE SALES REPRESENTATIVE AGREEMENT (Filed With SEC on November 14, 2013)

TECOGEN INC. DEMAND PROMISSORY NOTE (Filed With SEC on November 14, 2013)

COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on November 13, 2013)

COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on November 8, 2013)

TECOGEN INC. COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on October 21, 2013)

[_____] Shares Tecogen Inc. Common Stock UNDERWRITING AGREEMENT (Filed With SEC on September 30, 2013)

FIRST AMENDMENT TO THE REVOLVING LINE OF CREDIT AGREEMENT (Filed With SEC on August 14, 2013)

FIRST AMENDMENT TO THE FACILITIES, SUPPORT SERVICES, AND BUSINESS AGREEMENT (Filed With SEC on July 3, 2013)

REVOLVING LINE OF CREDIT AGREEMENT (Filed With SEC on May 2, 2013)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on February 14, 2013)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on February 11, 2013)

Portions of this exhibit were omitted and filed separately with the Secretary of the Securities and Exchange Commission pursuant to an application for confidential treatment filed... (Filed With SEC on January 15, 2013)

FACILITIES AND SUPPORT SERVICES AGREEMENT (Filed With SEC on December 21, 2012)

GENERAL MOTORS LLC CUSTOMER CARE AND AFTERSALES AGREEMENT NOVEMBER 22, 2012 PURPOSE OF AGREEMENT (Filed With SEC on December 21, 2012)

EXCLUSIVE LICENSE AGREEMENT (Filed With SEC on December 21, 2012)

STATE OF CALIFORNIA THE RESOURCES AGENCY CALIFORNIA ENERGY COMMISSION 1515 NINTH STREET SACRAMENTO, CA ###-###-#### (Filed With SEC on December 21, 2012)

SALES REPRESENTATIVE AGREEMENT (Filed With SEC on December 21, 2012)

FORM OF SALES REPRESENTATIVE AGREEMENT (Filed With SEC on July 19, 2012)

FORMOF StockOption Agreement under TecogenInc. 2006 Stock Incentive Plan (Filed With SEC on April 27, 2012)

FORM OF CONVERTIBLE PROMISSORY NOTE (Filed With SEC on April 27, 2012)

Atlantic-Waltham Investment II, LLC Commercial Lease (Filed With SEC on April 27, 2012)

FORM OF DEMAND PROMISSORY NOTE (Filed With SEC on April 27, 2012)

TECOGEN INC. FORM OF RESTRICTED STOCK PURCHASE AGREEMENT (Filed With SEC on December 22, 2011)

TECOGEN INC. AUDIT COMMITTEE CHARTER (Filed With SEC on December 22, 2011)

TECOGEN INC. COMPENSATION COMMITTEE CHARTER (Filed With SEC on December 22, 2011)

TECOGEN INC. NOMINATING AND GOVERNANCE COMMITTEE CHARTER (Filed With SEC on December 22, 2011)

TECOGEN INC. 2006 STOCK INCENTIVE PLAN (As Amended On November 10, 2011) (Filed With SEC on December 22, 2011)

TECOGEN INC. COMMON STOCK PURCHASE AGREEMENT (Filed With SEC on December 22, 2011)

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TECOGEN INC. Contracts & Agreements