Common use of FORM OF SECRETARY’S CERTIFICATE Clause in Contracts

FORM OF SECRETARY’S CERTIFICATE. This Secretary’s Certificate (“Certificate”) is being delivered pursuant to Section 8(j) of that certain Purchase Agreement dated as of October 23, 2019 (the “Purchase Agreement”), by and between GENOCEA BIOSCIENCES, INC., a Delaware corporation (the “Company”) and LINCOLN PARK CAPITAL FUND, LLC (the “Investor”). Terms used herein and not otherwise defined shall have the meanings ascribed to them in the Purchase Agreement. The undersigned, ____________, Secretary of the Company, hereby certifies as follows:

FORM OF SECRETARY’S CERTIFICATE. This Secretary’s Certificate (“Certificate”) is being delivered pursuant to Section 8(j) of that certain Purchase Agreement dated as of October 23December 17, 2019 2018 (the “Purchase Agreement”), by and between GENOCEA BIOSCIENCESCONFORMIS, INC., a Delaware corporation (the “Company”) and LINCOLN PARK CAPITAL FUND, LLC (the “Investor”). Terms used herein and not otherwise defined shall have the meanings ascribed to them in the Purchase Agreement. The undersigned, ____________, Secretary of the Company, hereby certifies on behalf of the Company as follows:

FORM OF SECRETARY’S CERTIFICATE. This Secretary’s Certificate (“Certificate”) is being delivered pursuant to Section 8(j) of that certain Purchase Agreement dated as of October 2318, 2019 2018 (the “Purchase Agreement”), by and between GENOCEA BIOSCIENCESACTINIUM PHARMACEUTICALS, INC., a Delaware corporation (the “Company”) and LINCOLN PARK CAPITAL FUND, LLC (the “Investor”). Terms used herein and not otherwise defined shall have the meanings ascribed to them in the Purchase Agreement. The undersigned, ____________, Secretary of the Company, hereby certifies as follows:

FORM OF SECRETARY’S CERTIFICATE. This Secretary’s Certificate (“Certificate”) is being delivered pursuant to Section 8(j) of that certain Purchase Agreement dated as of October 23March 4, 2019 (the “Purchase Agreement”), by and between GENOCEA BIOSCIENCESIDERA PHARMACEUTICALS, INC., a Delaware corporation (the “Company”) and LINCOLN PARK CAPITAL FUND, LLC (the “Investor”). Terms used herein and not otherwise defined shall have the meanings ascribed to them in the Purchase Agreement. The undersigned, ____________, Secretary of the Company, hereby certifies as follows:

FORM OF SECRETARY’S CERTIFICATE. This Secretary’s Certificate (“Certificate”) is being delivered pursuant to Section 8(j) of that certain Purchase Agreement dated as of October 2324, 2019 (the “Purchase Agreement”), by and between GENOCEA BIOSCIENCESALIMERA SCIENCES, INC., a Delaware corporation (the “Company”) and LINCOLN PARK CAPITAL FUND, LLC (the “Investor”)LLC. Terms used herein and not otherwise defined shall have the meanings ascribed to them in the Purchase Agreement. The undersigned, ____________, Secretary of the Company, hereby certifies certifies, on behalf of the Company and not in his individual capacity, as follows: