2,577-share sale noted; Karen Foster 10b5-1 trades (BLFS)

Rhea-AI Filing Summary

BLFS affiliate filed a Form 144 reporting the proposed sale of 2,577 shares of Common Stock via exercise of stock options. The filing also lists recent 10b5-1 cash sales by Karen Foster on 03/05/2026 (96,923 shares), 03/09/2026 (500 shares), 03/03/2026 (418 shares), and 01/06/2026 (335 shares) with proceeds shown alongside each trade.

Insights

Securities Compliance Officer

Form 144 records a proposed affiliate sale of 2,577 shares and several 10b5-1 dispositions by Karen Foster.

The filing lists a proposed sale tied to an exercise of stock options for 2,577 shares and multiple executed 10b5-1 cash sales with dates and per-trade proceeds. All amounts are shown as discrete transactions in the excerpt.

Timing and cash-flow treatment are stated per trade; further filings may show settlement details or additional dispositions.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	2577	48576.45	48300000	03/23/2026	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	03/23/2026	Exercise of Stock Options	Issuer			2577	03/23/2026	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
10b5-1 Sales for KAREN FOSTER 3303 Monte Villa Parkway, Suite 310 Bothell WA 98021	Common	03/09/2026	500	10002.00
10b5-1 Sales for KAREN FOSTER 3303 Monte Villa Parkway, Suite 310 Bothell WA 98021	Common	03/05/2026	96923	1953163.22
10b5-1 Sales for KAREN FOSTER 3303 Monte Villa Parkway, Suite 310 Bothell WA 98021	Common	03/03/2026	418	8669.32
10b5-1 Sales for KAREN FOSTER 3303 Monte Villa Parkway, Suite 310 Bothell WA 98021	Common	01/06/2026	335	8572.65

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did BLFS report on the Form 144?

The filing reports a proposed sale of 2,577 shares of Common Stock tied to an exercise of stock options. It also lists multiple executed 10b5-1 cash sales by Karen Foster with dates and proceeds for each trade.

How many shares did Karen Foster sell under 10b5-1 plans in the excerpt?

The excerpt lists four 10b5-1 sales by Karen Foster: 96,923, 500, 418, and 335 shares on specific dates. Each trade entry includes the per-trade proceeds shown in the excerpt.

What transaction type is associated with the 2,577 shares in BLFS's filing?

The 2,577 shares are linked to an exercise of stock options and are identified as securities to be sold by the issuer in the excerpt. The filing shows cash as the consideration method for that entry.

Are proceeds shown for the trades in the Form 144 excerpt?

Yes; the excerpt displays proceeds alongside each listed 10b5-1 sale (for example, $1,953,163.22 for the 96,923-share trade dated 03/05/2026). Each trade line in the excerpt pairs shares with proceeds.