BIOLIFE SOLUTIONS INC — Director's Dealing 2026

Feb 26, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOLIFE SOLUTIONS INC (BLFS)
CIK: 0000834365
Period of Report: 2026-02-24

Reporting Person: Aebersold Sarah (Chief Human Resources Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-24	Common Stock	A	23548	—	Acquired	99313	Direct
2026-02-24	Common Stock	F	5734	$22.65	Disposed	93579	Direct

Footnotes

F1: The restricted stock was granted pursuant to the BioLife Solutions 2023 Omnibus Performance Incentive Plan. In accordance with the terms of the grant, the restricted stock vested as to approximately 156% of the number of shares granted based on the registrant's total shareholder return during the period beginning on January 1, 2024 through December 31, 2025 as compared to the total shareholder return of certain of the registrant's peers (such peers have been determined by the registrant's compensation committee with assistance of an outside consultant immediately prior to the grant date).

F2: Represents shares withheld to cover tax withholding obligations in connection with the vesting of the market-based restricted stock award.