Investor Calendar

Virtual-Only 2020 Annual Stockholders Meeting

Jun 1, 2020 at 9:00 AM EDT

The Annual Meeting will be held on Monday, June 1, 2020, at 9:00 a.m. ET via live webcast. Stockholders may access the live webcast of the Annual Meeting at www.virtualshareholdermeeting.com/GNCA2020. Stockholders will not be able to attend the Annual Meeting in person.

Stockholders as of the close of business on April 6, 2020, the record date for the Annual Meeting, will be entitled to participate and vote at the Annual Meeting by entering the 16-digit control number found on their proxy card, voting instruction form or notice. Stockholders will also be able to submit questions during the Annual Meeting via the meeting website. Stockholders are encouraged to vote and submit their proxies in advance of the Annual Meeting by one of the methods described in the proxy materials. If a stockholder has already voted, no additional action is required.

Virtual-Only 2020 Annual Stockholders Meeting Monday, June 1, 2020, 9:00 a.m. ET The Annual Meeting can be accessed at www.virtualshareholdermeeting.com/GNCA2020. Technical assistance will be available for those attending the meeting.

Proxy Statement and Annual Report The proxy statement for the Annual Meeting and Genocea's 2020 annual report are available at www.proxyvote.com. For additional information regarding accessing and participating in the virtual meeting, please refer to Genocea's supplemental proxy materials filed with the United States Securities and Exchange Commission on April 20, 2020.