Exhibit A

AGREEMENT

The undersigned agree that this Schedule 13D amendment, dated April 9, 2025, relating to the Common Stock, $0.001 par value of BioLife Solutions, Inc. shall be filed on behalf of the undersigned.

April 9, 2025

(Date)

Casdin Capital, LLC

By: /s/ Eli Casdin

(Signature)

Eli Casdin, Managing Member

(Name/Title)

Casdin Partners Master Fund, L.P.

By: Casdin Partners GP, LLC, its general partner

By: /s/ Eli Casdin

(Signature)

Eli Casdin, Managing Member

(Name/Title)

Casdin Partners GP, LLC

By: /s/ Eli Casdin

(Signature)

Eli Casdin, Managing Member

(Name/Title)

/s/ Eli Casdin

Eli Casdin