Key facts
- This page summarizes Simrat Randhawa's Form 4 filing for Dianthus Therapeutics, Inc. /DE/ (DNTH).
- 11 reported transactions and 4 derivative rows are listed below.
- Accepted by SEC: 02 Jun 2026, 19:00.
Simrat Randhawa - 01 Jun 2026 Form 4 Insider Report for Dianthus Therapeutics, Inc. /DE/ (DNTH)
- Reporting relationship
- EVP, Head of R&D
- Issuer ticker
- DNTH
- Reported as of
- 01 Jun 2026
- Net transaction value
- -$2,404,077
- SEC form
- 4
- Accepted by SEC
- 02 Jun 2026, 19:00:06 UTC
- Prior SEC filing
- 13 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Adam Veness, as attorney-in-fact for Simrat Randhawa
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Simrat Randhawa filed Form 4 for Dianthus Therapeutics, Inc. /DE/ (DNTH) on 02 Jun 2026.
Change
- Previous filing in this sequence was filed on 13 Mar 2026.
- Current net transaction value: -$2,404,077.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001992260
Primary reporting owner
Randhawa Simrat
- Relationship
- EVP, Head of R&D
- Address
- C/O DIANTHUS THERAPEUTICS, INC., 7 TIMES SQUARE, 43RD FLOOR, NEW YORK
- Signature
- /s/ Adam Veness, as attorney-in-fact for Simrat Randhawa
- Signature date
- 02 Jun 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
DNTH
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +3,998
- Change %
- +100%
- Price
- $8.44*
- Shares after
- 7,998
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
DNTH
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +6,908
- Change %
- +86%
- Price
- $17.88*
- Shares after
- 14,906
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
DNTH
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +6,249
- Change %
- +42%
- Price
- $21.77*
- Shares after
- 21,155
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
DNTH
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +9,375
- Change %
- +44%
- Price
- $22.07*
- Shares after
- 30,530
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
DNTH
transaction
Common Stock
Sale
- Transaction value
- $487,000
- Shares
- -5,428
- Change %
- -18%
- Price
- $89.72
- Shares after
- 25,102
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1, F2
DNTH
transaction
Common Stock
Sale
- Transaction value
- $1,537,069
- Shares
- -16,943
- Change %
- -67%
- Price
- $90.72
- Shares after
- 8,159
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1, F3
DNTH
transaction
Common Stock
Sale
- Transaction value
- $380,008
- Shares
- -4,159
- Change %
- -51%
- Price
- $91.37
- Shares after
- 4,000
- Date
- 01 Jun 2026
- Ownership
- Direct
- Footnotes
- F1, F4
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
DNTH
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -3,998
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 01 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,998
- Exercise price
- $8.44
- Footnotes
- F1, F5
DNTH
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -6,908
- Change %
- -9.7%
- Price
- $0.000000*
- Shares after
- 64,276
- Date
- 01 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 6,908
- Exercise price
- $17.88
- Footnotes
- F1, F6
DNTH
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -6,249
- Change %
- -12%
- Price
- $0.000000*
- Shares after
- 47,925
- Date
- 01 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 6,249
- Exercise price
- $21.77
- Footnotes
- F1, F7
DNTH
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -9,375
- Change %
- -8.8%
- Price
- $0.000000*
- Shares after
- 96,875
- Date
- 01 Jun 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 9,375
- Exercise price
- $22.07
- Footnotes
- F1, F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 8 footnotes
Footnote F1
This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on August 14, 2025.
Footnote F2
The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $89.17 to $90.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F3
The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $90.17 to $91.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F4
The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $91.17 to $91.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F5
The shares of common stock underlying this stock option award vested as to 25% of the shares on April 25, 2023, with the remaining three quarters vesting in equal monthly installments over the following three years, subject to the Reporting Person's continued service to the Issuer on each such vesting date.
Footnote F6
The shares of common stock underlying this stock option award vest in equal monthly installments over the four years after January 1, 2024, subject to the Reporting Person's continued service to the Issuer on each such vesting date.
Footnote F7
The shares of common stock underlying this stock option award vest in equal monthly installments over the four years after May 1, 2024, subject to the Reporting Person's continued service to the Issuer on each such vesting date.
Footnote F8
The shares of common stock underlying this stock option award vest in equal monthly installments over the four years after January 1, 2025, subject to the Reporting Person's continued service to the Issuer on each such vesting date.