DNTH · Dianthus Therapeutics, Inc. /DE/

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The shares of common stock underlying this stock option award vest as to one-third of the shares subject to the option on each of the first, second and third anniversaries of the date of grant, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $117.01 to $117.66, 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.

The shares of common stock underlying this stock option award vested as to 25% of the shares on June 20, 2024, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $106.79 to $107.69, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $107.54 to $108.53, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $109.55 to $110.50, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $108.54 to $109.54, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The shares of common stock underlying this stock option award vest as to one-third of the shares subject to the option on each of the first, second and third anniversaries of the date of grant, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $106.50 to $107.27, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $110.05 to $111.00, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $110.56 to $111.56, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $111.15 to $111.63, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $108.89 to $109.86, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $111.57 to $111.80, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $110.00 to $110.88, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on May 11, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $107.84 to $108.76, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $111.08 to $111.45, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $108.57 to $108.97, 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.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.52 to $108.46, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $107.68 to $108.67, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $106.68 to $107.68, 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.

The shares of common stock underlying this stock option award vested as to 25% of the shares on November 1, 2022, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $110.07 to $111.06, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $108.74 to $109.72, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The shares of common stock underlying this stock option award vested as to 25% of the shares on November 1, 2022, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $109.75 to $110.56, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 30, 2025.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 30, 2025.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $101.95 to $102.15, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 30, 2025.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.75 to $100.74, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 30, 2025.

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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 30, 2025.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $100.78 to $101.75, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $81.00 to $81.80, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $80.00 to $80.99, 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.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 18, 2026.

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.

This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on August 14, 2025.

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.