DNTH insider files Form 144 to sell 1,198 shares

Insider notice of planned sale and recent 10b5-1 disposals.

Rhea-AI Filing Summary

Insider notice of planned sale and recent 10b5-1 disposals. The filing reports 1,198 shares of Common Stock to be sold on 03/31/2026 following an exercise of stock options for cash. It also discloses 10b5-1 sales completed on 03/24/2026 totaling 27,594 shares for $2,153,579.25.

Insights

Securities Compliance Analyst

Form 144 shows a scheduled exercise-related sale plus recent 10b5-1 transactions.

The notice lists an exercise of stock options that results in 1,198 shares being sold for cash on 03/31/2026. Separate line-item disclosure records 10b5-1 sales by Paula C Soteropoulos on 03/24/2026 of 27,594 shares totaling $2,153,579.25.

These entries are routine compliance filings documenting planned and recent insider dispositions under an established trading plan; cash-flow treatment for the exercise is listed as cash. Subsequent filings may show settlement or any additional dispositions.

Key Figures

Planned sale (exercise): 1,198 shares 10b5-1 sale (recent): 27,594 shares Proceeds reported: $2,153,579.25

3 metrics

Planned sale (exercise) 1,198 shares to be sold on 03/31/2026 following exercise of stock options

10b5-1 sale (recent) 27,594 shares sold on 03/24/2026 under a 10b5-1 plan

Proceeds reported $2,153,579.25 aggregate proceeds from 10b5-1 sales on 03/24/2026

Key Terms

10b5-1, exercise of stock options, Form 144

3 terms

10b5-1 regulatory

"10b5-1 Sales for PAULA C SOTEROPOULOS 7 Times Square"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

exercise of stock options financial

"Securities To Be Sold | Exercise of Stock Options"

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.

FAQ

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

What does the DNTH Form 144 disclose about planned sales?

The Form 144 discloses a planned sale of 1,198 shares of common stock via an exercise of stock options to be sold for cash on 03/31/2026. This is a notice of a proposed transaction under Section 16(b).

How many shares were sold under 10b5-1 prior to the DNTH filing?

The filing reports 27,594 shares sold under a 10b5-1 plan on 03/24/2026. The reported aggregate proceeds from those sales were $2,153,579.25.

Who is the reporting person in the DNTH Form 144?

The 10b5-1 sales are attributed to Paula C Soteropoulos, with an address listed at 7 Times Square, 43rd Floor, New York, NY. The filing lists that individual as the seller for the March transactions.

Was the planned sale on March 31, 2026 related to option exercise?

Yes. The filing explicitly states the March 31, 2026 transaction is an exercise of stock options resulting in 1,198 shares being sold for cash. The method is labeled as an exercise tied to issuer shares.

What proceeds were reported for the March 24, 2026 10b5-1 sale?

The filing reports aggregate proceeds of $2,153,579.25 for the 27,594 shares sold under the 10b5-1 plan on 03/24/2026. No allocation of proceeds is specified beyond the aggregate amount.

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

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Accepted by SEC EDGAR 03/31/2026 - 04:21 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	0001692444
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	Dianthus Therapeutics, Inc.
SEC File Number	001-38541
Address of Issuer	7 Times Square, 43rd Floor New York NEW YORK 10036
Phone	9299994055
Name of Person for Whose Account the Securities are To Be Sold	PAULA C SOTEROPOULOS
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	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	1198	95181.10	44471094	03/31/2026	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	03/31/2026	Exercise of Stock Options	Issuer			1198	03/31/2026	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
10b5-1 Sales for PAULA C SOTEROPOULOS 7 Times Square, 43rd Floor New York NY 10036	Common	03/24/2026	27594	2153579.25

144: Remarks and Signature

Remarks	The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale.
Date of Notice	03/31/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/23/2025
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	Paula C.Soteropoulos
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)