BioLife exec has 627 shares withheld for taxes

An EVP and chief scientific officer of BLFS had shares withheld to cover taxes on vested restricted stock units, leaving a substantial direct common stock holding.

Available on EDGAR 09/10/2026 - 04:50 PM EDT Accepted by SEC EDGAR 09/10/2026 - 04:50 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

BIOLIFE SOLUTIONS INC (BLFS) reported that executive vice president and chief scientific officer Mathew Aby J. had 627 shares of common stock withheld on September 8, 2026 to satisfy tax withholding obligations arising from the release of restricted stock units. The shares were valued at $35.38 per share, and he now directly holds 387,833 shares of common stock. This was a tax-withholding disposition rather than an open-market sale, and no Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Tax Withholding: 627 shares

Tax Withholding 1 txn

Insider Mathew Aby J.

Role EVP & Chief Scientific Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	627	$35.38	$22K

Holdings After Transaction: Common Stock — 387,833 shares (Direct)

Holdings Before and After: Common Stock, 388,460 to 387,833 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares withheld for tax: 627 shares Tax-withholding share value: $35.38 per share Shares held after transaction: 387,833 shares +1 more

4 metrics

Shares withheld for tax 627 shares Common stock withheld to satisfy tax obligations on September 8, 2026

Tax-withholding share value $35.38 per share Value applied to the 627 withheld common shares

Shares held after transaction 387,833 shares Direct common stock ownership by Mathew Aby J. after the withholding

Exercise price or tax-liability shares 627 shares Total shares used to satisfy tax withholding obligations in this Form 4

Key Terms

restricted stock units, tax withholding obligations, withheld by the Issuer

3 terms

restricted stock units financial

"obligations of the reporting person that arose upon the release of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person"

withheld by the Issuer financial

"Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What transaction did BLFS executive Mathew Aby J. report on this Form 4?

He reported that 627 shares of BIOLIFE SOLUTIONS INC common stock were withheld on September 8, 2026 to cover tax withholding obligations arising from the release of restricted stock units, rather than an open-market sale.

How many BLFS shares does the reporting officer hold after this transaction?

After the tax-withholding transaction, Mathew Aby J. directly holds 387,833 shares of BIOLIFE SOLUTIONS INC common stock as reported in the Form 4.

What was the price used for the BLFS tax-withholding shares?

The 627 shares of BIOLIFE SOLUTIONS INC common stock withheld for taxes were valued at $35.38 per share, according to the Form 4 disclosure.

Was the BLFS Form 4 transaction executed under a Rule 10b5-1 trading plan?

No. The Form 4 indicates that no Rule 10b5-1 trading plan was reported in connection with this tax-withholding disposition.

Did the BLFS insider sell shares in the open market in this Form 4?

No. The Form 4 describes a tax-withholding disposition, where 627 shares were withheld by the issuer to satisfy tax obligations from restricted stock unit vesting, not an open-market sale.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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)
09/08/2026

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	09/08/2026		F		627(1)	D	$35.38	387,833	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	09/10/2026
	** 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)