Valantine plans option-based sale; prior 25,484 shares sold (BBIO)

Rhea-AI Filing Summary

Hannah A Valantine reported a Rule 144 notice to sell Common Stock. The filing shows a planned sale tied to a 03/10/2026 stock option exercise and reports a prior sale of 25,484 shares on 02/27/2026 for $1,717,779.60.

The transaction is listed through Morgan Stanley Smith Barney LLC, with the security identified as Common and the market noted as NASDAQ. The filing is a notice of proposed resale under Rule 144 rather than a Form 3/4 insider trade report.

Insights

Securities Compliance Analyst

Rule 144 notice for a sale via option exercise and a recent reported disposition.

The filing lists a planned sale associated with a 03/10/2026 stock option exercise and reports a prior disposition of 25,484 shares on 02/27/2026 for $1,717,779.60. This is a regulatory notice of resale activity under restricted‑securities resale rules.

Timing and cash‑flow mechanics are described as "Cash" and executed through Morgan Stanley Smith Barney LLC. Subsequent public filings would show actual execution details and any changes to the planned sale.

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	8671	624312.00	193862871	03/10/2026	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	03/10/2026	Stock Option Exercise	ISSUER			8671	03/10/2026	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
HANNAH A VALANTINE 3160 Porter Drive Suite 250 Palo Alto CA 94304	Common	02/27/2026	25484	1717779.60

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 Hannah A Valantine report in the Rule 144 filing for BBIO?

She reported a planned sale tied to a stock option exercise scheduled for 03/10/2026, and disclosed a prior sale of 25,484 shares on 02/27/2026 that generated $1,717,779.60 in proceeds.

How many shares did the filing show were sold recently by the reporting person?

The filing reports a prior disposition of 25,484 Common shares on 02/27/2026, with reported proceeds of $1,717,779.60, as disclosed in the securities sold during the past three months section.

When is the planned sale under Rule 144 scheduled to occur?

The planned resale is associated with a stock option exercise scheduled for 03/10/2026 and is described with "Cash" as the consideration and Morgan Stanley Smith Barney LLC as the broker-dealer handling the transaction.

Does the Rule 144 filing indicate who will handle the sale for BBIO shares?

Yes; the filing lists Morgan Stanley Smith Barney LLC, Executive Financial Services at 1 New York Plaza, as the broker-dealer involved in the planned sale activity related to the disclosed stock option exercise.