BioLife Solutions (BLFS) CFO reports 1,026-share tax withholding, retains 215,030

Rhea-AI Filing Summary

BioLife Solutions Chief Financial Officer Troy Wichterman reported a routine tax-related share disposition. On the reported date, 1,026 shares of common stock were withheld by the company to satisfy his tax withholding obligations arising from the release of restricted stock units, rather than being sold in the open market.

After this tax-withholding event, Wichterman directly holds 215,030 shares of BioLife Solutions common stock, indicating he retains a substantial equity position. This filing reflects a compensation-related, non-discretionary transaction tied to vesting, not an active decision to buy or sell shares on the market.

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	1,026	$26.10	$27K

Holdings After Transaction: Common Stock — 215,030 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 1,026 shares Price per share for withholding: $26.10 per share Shares held after transaction: 215,030 shares +1 more

4 metrics

Shares withheld for taxes 1,026 shares Tax-withholding disposition tied to restricted stock unit release

Price per share for withholding $26.10 per share Valuation used for 1,026-share tax-withholding event

Shares held after transaction 215,030 shares Direct BLFS common stock holdings after tax withholding

Transaction code F Payment of tax liability by delivering securities

Key Terms

restricted stock units, tax withholding obligations, tax-withholding disposition, 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"

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

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^*

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)
06/08/2026

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	06/08/2026		F		1,026	D	$26.1(1)	215,030	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	06/10/2026
	** 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)

FAQ

What insider transaction did BioLife Solutions (BLFS) report for Troy Wichterman?

BioLife Solutions reported that CFO Troy Wichterman had 1,026 shares withheld to cover tax obligations from restricted stock unit vesting. This was a Form 4 tax-withholding disposition, not an open-market sale or purchase of BLFS common stock.

How many BioLife Solutions (BLFS) shares were withheld for Troy Wichterman’s taxes?

A total of 1,026 BLFS common shares were withheld to satisfy Troy Wichterman’s tax withholding obligations when his restricted stock units were released. This reduced his reported holdings slightly but did not involve selling shares into the open market.

Does Troy Wichterman still hold BioLife Solutions (BLFS) shares after this Form 4?

Yes. After the tax-withholding transaction, Troy Wichterman directly holds 215,030 shares of BioLife Solutions common stock. The filing shows only a small number of shares withheld for taxes, with a substantial remaining equity position reported in his name.

Was the BioLife Solutions (BLFS) Form 4 transaction an open-market sale?

No. The Form 4 states the 1,026 BLFS shares were withheld by the issuer to cover tax obligations from restricted stock unit vesting. This is categorized as a tax-withholding disposition, not an investor-initiated open-market sale or purchase of shares.

What does a tax-withholding disposition mean for BLFS insider activity?

A tax-withholding disposition means shares are retained by the company to cover an insider’s tax bill when equity awards vest. For BLFS, Troy Wichterman’s 1,026-share disposition reflects a routine compensation-related event, not a discretionary trade reflecting his view on the stock.