DFTX affiliate to sell 13,008 shares

DFTX affiliate files a Form 144 to sell 13,008 shares of Common Stock on 06/25/2026 under "Restricted Stock Vesting Under a Registered Plan." The filing shows a prior sale of 10,702 shares on 03/25/2026 for $197,665.94.

Rhea-AI Filing Summary

DFTX affiliate files a Form 144 to sell 13,008 shares of Common Stock on 06/25/2026 under "Restricted Stock Vesting Under a Registered Plan." The filing shows a prior sale of 10,702 shares on 03/25/2026 for $197,665.94.

Insights

Corporate Governance Analyst

Routine affiliate resale under a registered plan; not an earnings signal.

The filing lists the proposed sale of 13,008 shares under a registered plan dated 06/25/2026. This appears to be a mechanics-driven transaction linked to restricted stock vesting rather than a discretionary open-market trade.

Cash‑flow treatment and any broker methods are not stated in the excerpt; subsequent filings or transaction reports will show execution details and final proceeds.

Key Figures

Proposed shares to be sold: 13,008 shares Prior shares sold: 10,702 shares Proceeds from prior sale: $197,665.94 +1 more

4 metrics

Proposed shares to be sold 13,008 shares Proposed sale date <date>06/25/2026</date>

Prior shares sold 10,702 shares Sale date <date>03/25/2026</date>

Proceeds from prior sale $197,665.94 Proceeds reported for sale on <date>03/25/2026</date>

Amount shown in filing $548,027.04 Amount appearing in the filing excerpt (exact context in record)

Key Terms

Form 144, Restricted Stock Vesting Under a Registered Plan, Securities Sold During The Past 3 Months

3 terms

Form 144 regulatory

"144: Securities To Be Sold | Common | 06/25/2026"

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 Under a Registered Plan financial

"Restricted Stock Vesting Under a Registered Plan | Issuer"

Securities Sold During The Past 3 Months regulatory

"Securities Sold During The Past 3 Months | Common | 03/25/2026"

FAQ

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

What does the DFTX Form 144 filing report?

It reports a proposed sale of 13,008 shares of Common Stock under a registered plan on 06/25/2026. The filing notes the shares arise from restricted stock vesting and identifies the issuer involvement.

Who is the reported seller in the DFTX Form 144?

The filing lists an affiliate associated with Morgan Stanley Smith Barney LLC and an address for Mark Sullivan; it identifies the transaction as by the issuer in connection with restricted stock vesting.

Did the filing disclose prior sales by the seller for DFTX?

Yes; the filing shows a prior sale of 10,702 shares on 03/25/2026 that generated $197,665.94. That prior sale is recorded in the "Securities Sold During The Past 3 Months" section.

When will the 13,008 DFTX shares be sold?

The filing lists the proposed sale date as 06/25/2026. Execution details, methods, and actual proceeds are not provided in the excerpt and would appear in subsequent transaction reports.

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

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Accepted by SEC EDGAR 06/25/2026 - 04:10 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	0001331843
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	MARK SULLIVAN
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	13008	548027.04	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			13008	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MARK SULLIVAN ONE WORLD TRADE CENTER SUITE 8500 NEW YORK NY 10007	Common	03/25/2026	10702	197665.94

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/ Mark Sullivan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)