IMMUNOGEN INC Human Resources Contracts & Agreements

Compensation Policy for Non-Employee Directors, as amended through June 14, 2023 (Filed With SEC on July 31, 2023)

Change in Control Severance Agreement dated as of January 5, 2021 between the Registrant and Renee Lentini (Filed With SEC on March 1, 2023)

Change in Control Severance Agreement dated as of December 29, 2022 between the Registrant and Michael J. Vasconcelles (Filed With SEC on March 1, 2023)

Compensation Policy for Non-Employee Directors, as amended through December 15, 2022 (Filed With SEC on March 1, 2023)

Inducement Equity Incentive Plan, as amended December 15, 2022 (Filed With SEC on March 1, 2023)

Inducement Equity Incentive Plan, as amended (Filed With SEC on August 1, 2022)

Amended and Restated 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 17, 2022)

Change in Control Severance Agreement dated November 15, 2021 between the Registrant and Kristen Harrington-Smith (Filed With SEC on February 28, 2022)

Compensation Policy for Non-Employee Directors, as amended through December 16, 2021 (Filed With SEC on February 28, 2022)

Amended and Restated 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 17, 2021)

Compensation Policy for Non-Employee Directors, as amended through June 16, 2021 (Filed With SEC on June 17, 2021)

Inducement Equity Incentive Plan, as amended (Filed With SEC on May 10, 2021)

Change in Control Severance Agreement dated as of June 1, 2020 between the Registrant and Stacy Coen (Filed With SEC on March 1, 2021)

Form of Performance-Based Stock Option Agreement (February 2020) under the Inducement Equity Incentive Plan (Filed With SEC on August 5, 2020)

Employment Offer Letter dated June 30, 2020 between the Registrant and Susan Altschuller (Filed With SEC on August 5, 2020)

Change in Control Severance Agreement dated as of July 20, 2020 between the Registrant and Susan Altschuller, Ph.D (Filed With SEC on August 5, 2020)

Inducement Equity Incentive Plan - as amended (Filed With SEC on July 2, 2020)

Compensation Policy for Non-Employee Directors, as amended through June 17, 2020 (Filed With SEC on June 18, 2020)

Inducement Equity Incentive Plan as amended (Filed With SEC on May 5, 2020)

Form of Performance-Based Stock Option Agreement dated February 7, 2020 (Filed With SEC on March 11, 2020)

Inducement Equity Incentive Plan (Filed With SEC on December 20, 2019)

Form of Stock Option Agreement under the Inducement Equity Incentive Plan (Filed With SEC on December 20, 2019)

Form of Restricted Stock Unit Agreement under the Inducement Equity Incentive Plan (Filed With SEC on December 20, 2019)

Severance Pay Plan for Vice Presidents and Higher, as amended through June 20, 2019 (Filed With SEC on August 7, 2019)

Form of Performance-Based Restricted Stock Agreement dated April 3, 2019 (Filed With SEC on May 7, 2019)

2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 22, 2018)

Form of Incentive Stock Option Agreement under the 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 22, 2018)

Form of Non-Qualified Stock Option Agreement for employees under the 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 22, 2018)

Form of Restricted Stock Unit Agreement under the 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 22, 2018)

Form of Non-Qualified Stock Option Agreement for Non-Employee Directors under the 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 22, 2018)

Form of Deferred Stock Unit Agreement for Non-Employee Directors under the 2018 Employee, Director and Consultant Equity Incentive Plan (Filed With SEC on June 22, 2018)

Compensation Policy for Non-Employee Directors, as amended through March 28, 2018 (Filed With SEC on May 9, 2018)

Change in Control Severance Agreement dated April 23, 2018 between the Registrant and Blaine H. McKee (Filed With SEC on May 9, 2018)

Severance Pay Plan for Vice Presidents and Higher, as amended through February 15, 2018 (Filed With SEC on March 7, 2018)

Summary of ImmunoGen Incentive Bonus Plan (Filed With SEC on February 20, 2018)

PERFORMANCE BASED RESTRICTED STOCK AGREEMENT IMMUNOGEN, INC. (Filed With SEC on August 4, 2017)

IMMUNOGEN, INC. 2016 EMPLOYEE, DIRECTOR AND CONSULTANT EQUITY INCENTIVE PLAN (as amended June 13, 2017) (Filed With SEC on June 16, 2017)

CHANGE IN CONTROL SEVERANCE AGREEMENT (Filed With SEC on May 5, 2017)