BioLife Solutions director disposes of 13,871 shares

Each outstanding BioLife common share was converted into the right to receive $11.25 in cash and 0.1442 Repligen common shares.

Rhea-AI Filing Summary

BioLife Solutions director Catherine Coste disposed of 13,871 shares on October 6, 2026, in connection with the merger; her reported direct holdings afterward were 0 shares. Under the merger terms, each outstanding BioLife common share converted into the right to receive $11.25 in cash and 0.1442 Repligen common shares, subject to the merger agreement.

Insider Trade Summary

Disposition: 13,871 shares

Disposition 1 txn

Insider Coste Catherine

Role Director

Type	Security	Shares	Price	Value
Disposition	Common Stock F1	13,871	--	--

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (1)

1. F1. Reflects the disposition of shares of common stock ("Common Stock") of BioLife Solutions, Inc. (the "Registrant") in connection with the consummation on October 6, 2026 of the merger of Bravo Merger Sub I, Inc., a Delaware corporation ("Merger Sub 1") with and into the Registrant (the "First Merger"), pursuant to the Agreement and Plan of Merger, dated as of July 21, 2026 (the "Merger Agreement"), by and among the Registrant, Repligen Corporation, a Delaware corporation ("Repligen"), Merger Sub 1 and Bravo Merger Sub II, LLC, a Delaware limited liability company. At the effective time of the First Merger (the "First Merger Effective Time"), each outstanding share of Common Stock was converted into the right to receive $11.25 in cash and 0.1442 shares of Repligen common stock, in each case subject to the terms and conditions of the Merger Agreement.

Key Figures

Shares disposed: 13,871 shares Cash merger consideration: $11.25 per share Repligen common shares: 0.1442 shares per BioLife common share +1 more

4 metrics

Shares disposed 13,871 shares Catherine Coste, October 6, 2026

Cash merger consideration $11.25 per share For each outstanding BioLife common share

Repligen common shares 0.1442 shares per BioLife common share Merger consideration for each outstanding BioLife common share

Direct shares following transaction 0 shares Catherine Coste's reported position after the transaction

Key Terms

Agreement and Plan of Merger, First Merger Effective Time, converted into the right to receive

3 terms

Agreement and Plan of Merger regulatory

"pursuant to the Agreement and Plan of Merger"

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

First Merger Effective Time regulatory

"At the effective time of the First Merger"

converted into the right to receive technical

"each outstanding share of Common Stock was converted into the right to receive"

FAQ

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

How many BLFS shares did director Catherine Coste dispose of?

Catherine Coste disposed of 13,871 shares on October 6, 2026, in connection with the merger. Her reported direct holdings after the transaction were 0 shares.

What was the merger consideration for BioLife Solutions shares?

Each outstanding BioLife common share was converted into the right to receive $11.25 in cash and 0.1442 Repligen common shares, subject to the terms and conditions of the merger agreement.

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

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Available on EDGAR 10/08/2026 - 09:59 PM Accepted by SEC EDGAR 10/08/2026 - 09:58 PM Learn about SEC filing dates

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

X

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^*

Coste Catherine

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/06/2026

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	10/06/2026		D		13,871	D	(1)	0	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. Reflects the disposition of shares of common stock ("Common Stock") of BioLife Solutions, Inc. (the "Registrant") in connection with the consummation on October 6, 2026 of the merger of Bravo Merger Sub I, Inc., a Delaware corporation ("Merger Sub 1") with and into the Registrant (the "First Merger"), pursuant to the Agreement and Plan of Merger, dated as of July 21, 2026 (the "Merger Agreement"), by and among the Registrant, Repligen Corporation, a Delaware corporation ("Repligen"), Merger Sub 1 and Bravo Merger Sub II, LLC, a Delaware limited liability company. At the effective time of the First Merger (the "First Merger Effective Time"), each outstanding share of Common Stock was converted into the right to receive $11.25 in cash and 0.1442 shares of Repligen common stock, in each case subject to the terms and conditions of the Merger Agreement.

	/s/ Catherine Coste	10/08/2026
	** 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)