DFTX insider files Form 144 to sell 3,013 shares

Morgan Stanley Smith Barney LLC Executive Financial Services filed a Form 144 reporting a proposed sale of 3,013 shares of Common Stock tied to restricted stock vesting under a registered plan, with the sale date shown as 06/25/2026.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC Executive Financial Services filed a Form 144 reporting a proposed sale of 3,013 shares of Common Stock tied to restricted stock vesting under a registered plan, with the sale date shown as 06/25/2026.

Insights

Equity Capital Markets Compliance Analyst

Routine Form 144 notice for a restricted‑share sale tied to vesting.

The filing lists a proposed disposition of 3,013 shares associated with restricted stock vesting under a registered plan, dated 06/25/2026. This is a notice of intent to sell, not evidence of execution.

Cash‑flow treatment and purchaser details are not provided in the excerpt; subsequent trade reports or broker disclosures would show completed transactions if they occur.

Key Figures

Shares reported for sale: 3,013 shares Sale/vesting date: 06/25/2026

2 metrics

Shares reported for sale 3,013 shares listed as Securities To Be Sold tied to restricted stock vesting

Sale/vesting date 06/25/2026 date associated with the restricted stock vesting and proposed sale

Key Terms

Form 144, Restricted Stock Vesting, Registered Plan

3 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

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.

Restricted Stock Vesting financial

"Securities To Be Sold | Restricted Stock Vesting Under a Registered Plan"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Registered Plan regulatory

"Restricted Stock Vesting Under a Registered Plan | Issuer"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

FAQ

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

What does the Form 144 filed for DFTX report?

It reports a proposed sale of 3,013 shares of DFTX common stock tied to restricted stock vesting. The filing states the securities are from a registered plan and lists the date 06/25/2026 as the sale/vesting date.

Does the Form 144 confirm the shares were sold for DFTX?

No; Form 144 is a notice of intent to sell, not proof of sale. It shows the proposed sale of 3,013 shares on 06/25/2026; a separate trade report would confirm execution and proceeds.

Why is restricted stock vesting reported on Form 144 for DFTX?

Restricted stock that vests and is then offered for sale by affiliates often requires a Form 144 notice under resale rules. The filing links the 3,013 shares to vesting under a registered plan on 06/25/2026.

Who is listed as the selling party on the DFTX Form 144?

The excerpt lists Morgan Stanley Smith Barney LLC Executive Financial Services as the filer and identifies the securities as being sold by the issuer under a registered plan. The filing shows the planned sale of 3,013 shares.

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

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Accepted by SEC EDGAR 06/25/2026 - 04:08 PM 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	0001516354
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	BRANDI ROBERTS
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

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	3013	126937.69	109066783	06/25/2026	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	06/25/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			3013	06/25/2026	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	06/25/2026
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/ Brandi Roberts
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)