DFTX insider files to sell 24,431 shares

Robert Barrow filed a Form 144 reporting an intended sale of 24,431 shares of Common stock of DFTX on 03/25/2026, described as restricted stock vesting under a registered plan.

Rhea-AI Filing Summary

Robert Barrow filed a Form 144 reporting an intended sale of 24,431 shares of Common stock of DFTX on 03/25/2026, described as restricted stock vesting under a registered plan. The filing also shows a prior sale of 25,791 shares on 12/26/2025.

Insights

Securities Compliance Analyst

Routine Form 144 for vested restricted shares; compliance disclosure, not a company action.

The filing lists an intended disposition of 24,431 shares tied to restricted stock vesting under a registered plan, with the broker listed as Morgan Stanley Smith Barney LLC. This is a disclosure required when restricted shares become eligible for sale.

Timing and cash‑flow treatment are those stated: the sale date is 03/25/2026. Prior reported sales include 25,791 shares sold on 12/26/2025. Subsequent filings will show execution details and any Rule 144 reliance.

FAQ

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

What does Robert Barrow's Form 144 for DFTX report?

It reports an intended sale of 24,431 shares of DFTX common stock on 03/25/2026. The sale is described as restricted stock vesting under a registered plan, with a prior sale of 25,791 shares on 12/26/2025.

Does the Form 144 indicate how proceeds will be used?

No. The filing states the securities are being sold due to restricted stock vesting under a registered plan. It does not specify use of proceeds or purchaser details in the provided excerpt.

Who is the broker or intermediary listed on the Form 144?

The broker listed is Morgan Stanley Smith Barney LLC, 1 New York Plaza, 8th Floor. The filing ties the proposed sale to that broker for the stated sale date of 03/25/2026.

Were there recent prior sales reported by the same filer?

Yes. The filing shows prior sales of 25,791 shares on 12/26/2025. That prior sale amount is reported in the "Securities Sold During The Past 3 Months" section of the excerpt.

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

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Accepted by SEC EDGAR 03/25/2026 - 05:41 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	0001897557
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	DEFINIUM THERAPEUTICS, INC.
SEC File Number	001-40360
Address of Issuer	ONE WORLD TRADE CENTER SUITE 8500 NEW YORK NEW YORK 10007
Phone	212-220-6633
Name of Person for Whose Account the Securities are To Be Sold	ROBERT B BARROW
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	24431	451240.57	99698129	03/25/2026	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	03/25/2026	Restricted stock vesting under a registered plan	Issuer			24431	03/25/2026	Services Rendered

* 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
Robert Barrow ONE WORLD TRADE CENTER SUITE 8500 NEW YORK NY 10007	Common	12/26/2025	25791	339071.00

144: Remarks and Signature

Remarks
Date of Notice	03/25/2026
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/ Robert Barrow
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)