BIOLIFE SOLUTIONS INC — Director's Dealing 2024

May 2, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOLIFE SOLUTIONS INC (BLFS)
CIK: 0000834365
Period of Report: 2024-04-30

Reporting Person: Casdin Partners Master Fund, L.P. (10% Owner)
Reporting Person: Casdin Capital, LLC (10% Owner)
Reporting Person: Casdin Partners GP, LLC (10% Owner)
Reporting Person: Casdin Eli (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-04-30	Common Stock, par value $.001 per share	J	150000	$17.54	Acquired	8707165	Direct
2024-04-30	Common Stock, par value $.001 per share	J	150000	$17.54	Disposed	0	Indirect

Footnotes

F1: Represents a cross-trade, pursuant to which a client of Casdin Capital, LLC ("Casdin Capital") transferred 150,000 shares of common Stock, par value $.001 per share to Casdin Partners Master Fund, L.P. (the "Master Fund").

F2: The securities are owned directly by the Master Fund and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC ("Casdin GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital and Casdin GP.

F3: The securities were owned directly by a client of Casdin Capital and were deemed to be indirectly beneficially owned by (i) Casdin Capital, the investment adviser to such client; (ii) Casdin GP, the general partner of such client, and (iii) Eli Casdin, the managing member of Casdin Capital and Casdin GP.