SELLAS Life Sciences Group, Inc. | Business Contracts

Exclusive License Agreement by and among SELLAS, SLSG, and 3DMed, dated as of December 7, 2020 (Filed With SEC on January 28, 2021)

Form of Placement Agent Agreement (Filed With SEC on December 14, 2020)

Sublease, effective June 5, 2020, by and between the Company and Reimer & Braunstein LLP (Filed With SEC on June 11, 2020)

Form of Registration Rights Agreement (Filed With SEC on August 4, 2020)

Form of Purchase Agreement (Filed With SEC on August 4, 2020)

Form of Warrant (Filed With SEC on August 4, 2020)

Description of Securities (Filed With SEC on March 13, 2020)

Form of Stock Option Grant Notice and Option Agreement under the 2019 Equity Incentive Plan (Filed With SEC on March 13, 2020)

Form of Restricted Stock Unit Grant and Agreement under the 2019 Equity Incentive Plan (Filed With SEC on March 13, 2020)

Form of Placement Agent Agreement (Filed With SEC on January 10, 2020)

Form of Investor Warrant (Filed With SEC on January 10, 2020)

Form of Pre-Funded Warrant (Filed With SEC on January 10, 2020)

Amendment to Warrant to Purchase Common Stock (Filed With SEC on January 7, 2020)

2019 Equity Incentive Plan (Filed With SEC on November 14, 2019)

Form of Investor Agreement (Filed With SEC on July 9, 2019)

Amendment to Warrant Agreement (Filed With SEC on July 9, 2019)

Form of Pre-Funded Warrant (Filed With SEC on June 18, 2019)

Form of Warrant Agreement, including Form of Common Warrant (Filed With SEC on June 13, 2019)

Form of Pre-Funded Warrant (Filed With SEC on June 13, 2019)

Form of Underwriting Agreement (Filed With SEC on June 13, 2019)

Form of Warrant Exercise Agreement (Filed With SEC on March 6, 2019)

Form of New Warrant (Filed With SEC on March 6, 2019)

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