Marcus Schulz - May 31, 2023 Form 4 Insider Report for BIOLIFE SOLUTIONS INC (BLFS)

Role: Chief Revenue Officer
Signature: /s/ Marcus Schulz
Stock symbol: BLFS
Transactions as of: May 31, 2023
Transactions value $: -$7,822
Form type: 4
Date filed: 6/2/2023, 08:01 PM
Previous filing: May 17, 2023
Next filing: Jul 13, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLFS	Common Stock	Sale	-$7.82K	-337	-0.77%	$23.21	43.6K	May 31, 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 02-24-2022 to satisfy tax withholding obligations in connection with the vesting of shares of restricted stock.