BioLife Solutions (BLFS) EVP has 2,255 shares withheld to cover RSU taxes

Rhea-AI Filing Summary

BioLife Solutions EVP & Chief Scientific Officer Mathew Aby J. reported a routine tax-related share disposition. On the release of restricted stock units, 2,255 shares of common stock were withheld by the company at $19.12 per share to cover his tax obligations. After this withholding, he continues to directly own 390,682 shares of BioLife Solutions common stock, indicating that only a small portion of his overall holdings was affected and that this was not an open-market sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Mathew Aby J.

Role EVP & Chief Scientific Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,255	$19.12	$43K

Holdings After Transaction: Common Stock — 390,682 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^*

Mathew Aby J.

(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)
	EVP & Chief Scientific 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		2,255	D	$19.12(1)	390,682	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/ Aby J. Mathew	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 Mathew Aby J.?

BioLife Solutions reported that EVP & Chief Scientific Officer Mathew Aby J. had 2,255 common shares withheld to cover tax obligations arising from restricted stock unit vesting, a routine compensation-related event rather than an open-market share sale.

How many BioLife Solutions (BLFS) shares were withheld for taxes in this Form 4?

A total of 2,255 shares of BioLife Solutions common stock were withheld by the company to satisfy Mathew Aby J.’s tax withholding obligations triggered by the release of restricted stock units granted as part of his compensation.

What is Mathew Aby J.’s remaining BioLife Solutions (BLFS) shareholding after this transaction?

Following the tax-withholding disposition, EVP & Chief Scientific Officer Mathew Aby J. directly holds 390,682 shares of BioLife Solutions common stock, showing that the withheld amount is small compared with his continuing ownership stake in the company.

Was the BioLife Solutions (BLFS) insider transaction an open-market sale?

No, the transaction was not an open-market sale. The 2,255 shares were withheld by BioLife Solutions solely to satisfy tax withholding obligations upon the vesting of restricted stock units, a common administrative step in equity compensation.

What does a tax-withholding disposition mean for BioLife Solutions (BLFS) insiders?

A tax-withholding disposition means the company retains a portion of vested shares to pay the insider’s taxes. For BioLife Solutions, 2,255 shares were withheld from Mathew Aby J., reflecting a standard mechanism tied to equity awards, not discretionary buying or selling.