SNSE Form 144: Insider plans to sell 3,374 shares

SNSE submitted a Form 144 notice reporting a proposed Rule 144 sale of 3,374 common shares to be effected on 02/24/2026 pursuant to an option granted on 02/15/2023.

Rhea-AI Filing Summary

SNSE submitted a Form 144 notice reporting a proposed Rule 144 sale of 3,374 common shares to be effected on 02/24/2026 pursuant to an option granted on 02/15/2023. The filing also discloses prior sales of 42,594 common shares on 02/19/2026 for $1,094,370.79.

Insights

Securities Compliance Counsel

Routine Rule 144 sale notice for insider shares; prior sales disclosed.

The filing lists a proposed sale of 3,374 common shares on 02/24/2026 tied to an option granted on 02/15/2023. It also reports prior sales of 42,594 shares on 02/19/2026 for $1,094,370.79.

This is a disclosure filing under Rule 144; timing and method are stated as cash. Any execution, settlement details, and whether volume limitations apply depend on market mechanics and are not detailed in the excerpt.

FAQ

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

What does SNSE's Form 144 report about the proposed sale?

It reports a proposed sale of 3,374 common shares on 02/24/2026. The notice ties the sale to an option granted on 02/15/2023 and lists the sale method as cash.

How many shares did SNSE report were sold recently and for how much?

The filing shows 42,594 common shares sold on 02/19/2026 for $1,094,370.79. That entry is presented under "Securities Sold During The Past 3 Months" in the excerpt.

Who is identified as the selling/related party in the SNSE Form 144?

The excerpt lists John K. Celebi with an address in Rockville, MD. It also references Fidelity Brokerage Services LLC in the securities information section.

Is the Form 144 filing an instruction to sell or a notice of intent?

Form 144 is a notice of intent to sell under Rule 144. The excerpt shows the proposed sale date and past sales but does not itself execute a trade; actual transactions occur in the market.

Does the filing state how the shares will be sold?

The filing lists the method as "Cash." No further sale mechanics, broker instructions, or volume limits are provided in the excerpt.

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

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Accepted by SEC EDGAR 02/24/2026 - 04:11 PM EST 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	0001843539
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	Sensei Biotherapeutics, Inc.
SEC File Number	001-39980
Address of Issuer	1405 RESEARCH BLVD, SUITE 125 ROCKVILLE MARYLAND 20850
Phone	(240) 243-8000
Name of Person for Whose Account the Securities are To Be Sold	Celebi John
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	Former Officer

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	3374	116356.25	1261290	02/24/2026	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	02/24/2026	Option Granted 02/15/2023	Issuer			3374	02/24/2026	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
John K. Celebi 1405 Research Blvd Suite 125 Rockville MD 20850	Common	02/19/2026	42594	1094370.79

144: Remarks and Signature

Remarks
Date of Notice	02/24/2026
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/ Audrey McMillen, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John Celebi
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)