BLFS affiliate files Form 144 to sell 250,000 shares

BioLifesolutions, Inc. notice of proposed sale of 250,000 shares of Common Stock under a Form 144 by an affiliate.

Rhea-AI Filing Summary

BioLifesolutions, Inc. notice of proposed sale of 250,000 shares of Common Stock under a Form 144 by an affiliate. The filing shows the shares were purchased from the issuer on 08/13/2018 and lists a prior sale of 300,000 shares on 05/19/2026 with gross proceeds of $6,795,000.00. The broker identified is BMO Capital Markets and the securities are listed on NASDAQ.

Insights

Securities Compliance Analyst

Routine Form 144 notice for an affiliate sale; disclosure-focused, not an execution report.

This Form 144 provides the required notice that an affiliate intends to sell 250,000 shares of Common Stock; it records the original purchase date as 08/13/2018. The filing names BMO Capital Markets as broker-dealer and lists a recent sale of 300,000 shares on 05/19/2026 with gross proceeds of $6,795,000.00.

The legal significance is disclosure under resale rules for affiliates; timing and completion of the proposed sale are not stated. Subsequent transaction reports or broker confirmations will show whether the intended sale executed.

Key Figures

Proposed sale: 250,000 shares Recent sale listed: 300,000 shares Gross proceeds (prior sale): $6,795,000.00 +2 more

5 metrics

Proposed sale 250,000 shares Common Stock proposed to be sold (Form 144)

Recent sale listed 300,000 shares Sale dated 05/19/2026 shown in filing

Gross proceeds (prior sale) $6,795,000.00 Proceeds from 300,000-share sale on 05/19/2026

Original purchase date 08/13/2018 Purchase from issuer shown for the shares being sold

Exchange NASDAQ Listing exchange for the Common Stock

Key Terms

Form 144, affiliate, broker-dealer

3 terms

Form 144 regulatory

"notice of proposed sale of 250,000 shares of Common Stock"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

affiliate regulatory

"notice by an affiliate intending to sell shares under resale rules"

broker-dealer financial

"BMO Capital Markets listed as broker-dealer for the transaction"

A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.

FAQ

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

What does BioLifesolutions (BLFS) Form 144 disclose?

It discloses an affiliate intends to sell 250,000 shares of Common Stock and records a prior sale of 300,000 shares on 05/19/2026 for $6,795,000.00. The broker listed is BMO Capital Markets.

Who is the broker-dealer on the BLFS Form 144?

The filing lists BMO Capital Markets at 151 W. 42nd St., New York. The broker is identified in connection with the proposed resale of 250,000 shares of Common Stock.

When were the shares being offered originally purchased according to the Form 144?

The filing states the shares were purchased from the issuer on 08/13/2018 for cash. That purchase date is shown in the Form 144 purchase history section.

Does the Form 144 show proceeds to the issuer for these shares?

The filing shows a prior sale on 05/19/2026 with gross proceeds of $6,795,000.00. The Form 144 does not state proceeds treatment for the proposed 250,000-share sale.

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

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Accepted by SEC EDGAR 05/20/2026 - 07:26 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001534265
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	BIOLIFE SOLUTIONS INC
SEC File Number	001-36362
Address of Issuer	3303 Monte Villa Parkway, Suite 310 Bothell WASHINGTON 98021
Phone	425-402-1400
Name of Person for Whose Account the Securities are To Be Sold	Casdin Partners Master Fund, L.P
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	10% Shareholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock, par value $0.001 per share	BMO Capital Markets 151 W. 42nd St. New York NY 10036	250000	6000000.00	48857415	05/20/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock, par value $0.001 per share	08/13/2018	Purchase	The shares were purchased directly from the Issuer.			250000	08/13/2018	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Casdin Partners Master Fund, L.P. 1350 Avenue of the Americas, Suite 2600 New York NY 10019	Common Stock, par value $0.001 per share	05/19/2026	300000	6795000.00

144: Remarks and Signature

Remarks
Date of Notice	05/20/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Eli Casdin
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)