BioLife Solutions (BLFS) CEO reports RSU tax share withholding

Rhea-AI Filing Summary

BioLife Solutions President and CEO Roderick De Greef reported a routine tax-related share withholding. The company withheld 2,775 shares of common stock to satisfy his tax obligations when restricted stock units were released. After this non-market transaction, he directly holds 730,971 shares of BioLife Solutions common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider DE GREEF RODERICK

Role President and CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,775	$26.04	$72K

Holdings After Transaction: Common Stock — 730,971 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 2,775 shares Withholding price per share: $26.04 per share Shares held after transaction: 730,971 shares

3 metrics

Shares withheld for taxes 2,775 shares Common Stock withheld to satisfy tax obligations on RSU release

Withholding price per share $26.04 per share Value used for the 2,775 withheld shares

Shares held after transaction 730,971 shares CEO’s direct BioLife Solutions common stock holdings after withholding

Key Terms

restricted stock units, tax withholding obligations, Common Stock, Form 4

4 terms

restricted stock units financial

"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

"withheld by the Issuer to satisfy tax withholding obligations"

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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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^*

DE GREEF RODERICK

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2026

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	06/18/2026		F		2,775(1)	D	$26.04	730,971	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/ Roderick de Greef	06/22/2026
	** 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 did BioLife Solutions (BLFS) CEO Roderick De Greef report in this Form 4?

Roderick De Greef reported that 2,775 BioLife Solutions shares were withheld to cover taxes due on the release of restricted stock units. This is a compensation-related, non-market transaction rather than an open-market purchase or sale.

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

A total of 2,775 BioLife Solutions common shares were withheld by the company to satisfy the CEO’s tax withholding obligations. The withholding arose upon the release of restricted stock units previously granted as part of his equity compensation.

Is the BioLife Solutions (BLFS) CEO’s Form 4 transaction an open-market sale?

No, the transaction is not an open-market sale. The 2,775 shares were withheld by BioLife Solutions to pay the CEO’s tax liability triggered by the vesting of restricted stock units, a standard administrative process for equity compensation.

How many BioLife Solutions (BLFS) shares does the CEO hold after this tax withholding?

After the tax withholding transaction, the CEO directly holds 730,971 shares of BioLife Solutions common stock. This figure reflects his position following the 2,775 shares withheld to cover taxes on the released restricted stock units.

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. Here, it shows BioLife Solutions withheld 2,775 shares from the CEO upon RSU release to cover required tax withholding, not a discretionary market sale.