Troy Wichterman - Sep 21, 2023 Form 4 Insider Report for BIOLIFE SOLUTIONS INC (BLFS)

Role: Chief Financial Officer
Signature: /s/ Troy Wichterman
Stock symbol: BLFS
Transactions as of: Sep 21, 2023
Transactions value $: -$6,845
Form type: 4
Date filed: 9/25/2023, 04:57 PM
Previous filing: Sep 12, 2023
Next filing: Oct 2, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLFS	Common Stock	Sale	-$6.85K	-539	-0.81%	$12.70	66.3K	Sep 21, 2023	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	The sale reported herein was made pursuant to a Rule 10b5-1 (c) trading plan adopted by the reporting person effective as of 06-19-2020 to satisfy tax withholding obligations in connection with the vesting of shares of restricted stock.