BioLife Solutions (BLFS) CFO has shares withheld to cover RSU taxes

Rhea-AI Filing Summary

BioLife Solutions Inc.'s Chief Financial Officer Troy Wichterman reported a routine tax-related share withholding tied to restricted stock vesting. On this Form 4, 3,749 shares of Common Stock were withheld at $19.12 per share to satisfy tax obligations that arose when restricted stock units were released.

These shares were not sold in the open market; they were retained by the company to cover taxes. After this transaction, Wichterman holds 216,900 shares of BioLife Solutions common stock directly, indicating he retains a substantial equity position following the RSU vesting event.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Wichterman Troy

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	3,749	$19.12	$72K

Holdings After Transaction: Common Stock — 216,900 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Wichterman Troy

(Last) (First) (Middle)

3303 MONTE VILLA PARKWAY

SUITE 310

(Street)

BOTHELL WASHINGTON 98021

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BIOLIFE SOLUTIONS INC [ BLFS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/19/2026		F		3,749	D	$19.12(1)	216,900	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units.

Remarks:

	/s/ Troy Wichterman	03/23/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did BioLife Solutions (BLFS) report for its CFO?

BioLife Solutions reported that CFO Troy Wichterman had 3,749 shares withheld to cover taxes on vested restricted stock units. This was a tax-withholding disposition, not an open-market sale, and is a common administrative event for equity-based compensation.

Did the BioLife Solutions (BLFS) CFO sell shares in the open market?

No, the CFO did not sell shares in the open market. The 3,749 shares shown were withheld by the company to satisfy tax liabilities from RSU vesting, a standard non-market transaction often seen with executive stock-based compensation.

How many BioLife Solutions (BLFS) shares does the CFO hold after this Form 4?

After the reported tax-withholding transaction, CFO Troy Wichterman holds 216,900 shares of BioLife Solutions common stock directly. This figure reflects his remaining equity stake following the RSU-related share withholding disclosed in the Form 4 filing.

What does transaction code F mean in the BioLife Solutions (BLFS) Form 4?

Transaction code F indicates a disposition of shares to satisfy tax obligations or exercise costs. In this case, 3,749 shares were withheld by BioLife Solutions to cover the CFO’s tax liability upon release of restricted stock units, rather than being sold on the market.

Is the BioLife Solutions (BLFS) CFO’s Form 4 transaction a strong insider signal?

This transaction is generally considered a weak or neutral insider signal. It reflects automatic share withholding for taxes on restricted stock unit vesting, not a discretionary purchase or sale decision by the CFO in the open market.