BCAX files Form 144 to sell 15,000 shares

BCAX notice of a proposed sale of 15,000 shares of Common Stock to be sold on 04/20/2026 following an exercise of stock options.

Rhea-AI Filing Summary

BCAX notice of a proposed sale of 15,000 shares of Common Stock to be sold on 04/20/2026 following an exercise of stock options. The sale is listed as by UBS Financial Services, Inc. and shown as an issuer-related cash transaction.

The filing also lists prior open-market sales by Claire Mazumdar in March 2026, including transactions on 03/09/2026 for 36,766 shares ($704,657.16) and other March dates with smaller lots.

Insights

Securities Compliance Attorney

Form 144 documents a proposed resale of securities after option exercise.

Form 144 is a notice required under Rule 144 when restricted or control securities are offered for sale; the entry shows 15,000 shares tied to an exercise of stock options and a broker-dealer listed as UBS Financial Services.

Filing compliance hinges on timely notice and adherence to Rule 144 volume and holding-period conditions; the excerpt shows the transaction date and sale method but does not state holding-period compliance details.

Equity Markets Analyst

Planned sale size is modest relative to typical public floats; prior insider sales occurred in March.

The notice lists 15,000 shares for 04/20/2026 and several March sales by Claire Mazumdar, including 36,766 shares on 03/09/2026 for $704,657.16. These are routine supply events.

Market impact will depend on float and trading volume; the excerpt does not include outstanding share counts or trading volumes.

Key Figures

Planned sale: 15,000 shares March single-day sale: 36,766 shares Example March sale: 6,905 shares +1 more

4 metrics

Planned sale 15,000 shares scheduled sale on 04/20/2026 after exercise of stock options

March single-day sale 36,766 shares sale on 03/09/2026 for $704,657.16 by Claire Mazumdar

Example March sale 6,905 shares sale on 03/19/2026 for $129,704.90 by Claire Mazumdar

Example March sale 2,631 shares sale on 03/04/2026 for $49,288.63 by Claire Mazumdar

Key Terms

Form 144, exercise of stock options, issuer

3 terms

Form 144 regulatory

"Form 144 notice of proposed sale required under Rule 144"

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.

exercise of stock options financial

"Exercise of stock options recorded as the reason for the sale"

issuer regulatory

"Sale method listed as 'Issuer' and transaction as 'Cash'"

FAQ

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

What does BCAX's Form 144 report show?

It reports a proposed sale of 15,000 shares of Common Stock on 04/20/2026. The filing ties the sale to an exercise of stock options and lists UBS Financial Services as the broker-dealer handling the transaction.

Who is listed as selling the shares in the BCAX Form 144?

The broker-dealer UBS Financial Services, Inc. is named for the 15,000-share sale on 04/20/2026. Separate March sales are attributed to Claire Mazumdar with multiple executed transactions noted.

Were there prior insider sales for BCAX in March 2026?

Yes. The filing lists multiple March 2026 sales by Claire Mazumdar, including 36,766 shares on 03/09/2026 for $704,657.16 and several other smaller lots on March dates.

Does the Form 144 state how proceeds will be used?

No. The filing records the sale as a cash transaction tied to an exercise of stock options, but it does not specify any use-of-proceeds or how sale proceeds will be allocated.

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

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Accepted by SEC EDGAR 04/20/2026 - 04:02 PM EDT 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	0002034671
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	Bicara Therapeutics Inc.
SEC File Number	001-42271
Address of Issuer	116 HUNTINGTON AVENUE SUITE 703 BOSTON MASSACHUSETTS 02116
Phone	617-468-4219
Name of Person for Whose Account the Securities are To Be Sold	Mazumdar Claire
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	Officer
Relationship to Issuer	Director

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	UBS Financial Services, Inc. 11 Madison Ave 4th Floor New York NY 10010	15000	356100.00	65467187	04/20/2026	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	04/20/2026	Exercise of stock options	Issuer			15000	04/20/2026	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
Claire Mazumdar 116 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/04/2026	2631	49288.63
Claire Mazumdar 116 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/05/2026	1786	33464.10
Claire Mazumdar 116 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/06/2026	3817	71571.80
Claire Mazumdar 116 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/09/2026	36766	704657.16
Claire Mazumdar 16 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/18/2026	6499	122414.51
Claire Mazumdar 16 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/19/2026	6905	129704.90
Claire Mazumdar 16 HUNTINGTON AVENUE SUITE 703 Boston MA 02116	Common	03/20/2026	1596	30246.27

144: Remarks and Signature

Remarks
Date of Notice	04/20/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/12/2025
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/ UBS Financial Services Inc., as attorney-in-fact for Claire Mazumdar
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)