Over the 90-day window ending January 10, 2026, Dianthus Therapeutics's three dominant insider ownership positions are held by Director Lei Meng (2.72Mn shares), Director Leon O Jr Moulder (1.44Mn shares), TenPercentOwner Rock Ventures Iv, L.P. Third (191.14K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Rock Ventures Iv, L.P. Third | 191,138 | 09 Feb, 2023 | |
| Lei Meng | 2,717,554 | 24 Jan, 2024 | |
| Leon O Jr Moulder | 1,436,745 | 24 Jan, 2024 | |
| Jason Gardner | Nan | 18,305 | 02 Dec, 2022 |
| Kristen Stants | Chief People Officer | 1,267 | 02 Dec, 2022 |
| Thomas W. Beetham | Nan | 1,244 | 02 Dec, 2022 |
| Caren Deardorf | Chief Commercial Officer | 1,235 | 02 Dec, 2022 |
| Stephen F. Mahoney | Nan | 1,079 | 02 Dec, 2022 |
| David Wayne Nichols | Chief Technical Officer | 894 | 20 Sep, 2021 |
| Lisa Olson | Nan | 892 | 20 Sep, 2021 |
| Alexis Borisy | 256 | 23 Sep, 2021 | |
| Simrat Randhawa | Evp And Head Of R&D | 4,000 | 14 Nov, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 04 Dec, 2025 | Ryan Savitz | Common Stock | A | 20,000 | $8.44 | 20,000 | D | M |
| 04 Dec, 2025 | Ryan Savitz | Common Stock | D | 20,000 | $45.18 | 0 | D | S |
| 14 Nov, 2025 | Simrat Randhawa | Common Stock | A | 31,250 | $22.07 | 113,031 | D | M |
| 14 Nov, 2025 | Simrat Randhawa | Common Stock | A | 40,287 | $17.88 | 44,287 | D | M |
| 14 Nov, 2025 | Simrat Randhawa | Common Stock | D | 109,031 | $38.14 | 4,000 | D | S |
| 14 Nov, 2025 | Simrat Randhawa | Common Stock | A | 37,494 | $21.77 | 81,781 | D | M |
| 13 Nov, 2025 | Simrat Randhawa | Common Stock | D | 26,166 | $35.80 | 65,341 | D | S |
| 13 Nov, 2025 | Simrat Randhawa | Common Stock | D | 18,576 | $37.72 | 4,000 | D | S |
| 13 Nov, 2025 | Simrat Randhawa | Common Stock | A | 3,529 | $17.88 | 91,507 | D | M |
| 13 Nov, 2025 | Simrat Randhawa | Common Stock | A | 83,978 | $8.44 | 87,978 | D | M |
| 13 Nov, 2025 | Simrat Randhawa | Common Stock | D | 42,765 | $37.04 | 22,576 | D | S |
| 09 Sep, 2025 | Ryan Savitz | Common Stock | A | 20,000 | $8.44 | 20,000 | D | M |
| 09 Sep, 2025 | Ryan Savitz | Common Stock | D | 20,000 | $35.00 | 0 | D | S |
| 27 Sep, 2024 | Funds Management Llc Fairmount | Common Stock | D | 62,146 | $0.00 | 0 | I | J |
| 27 Sep, 2024 | Funds Management Llc Fairmount | - | - | 0 | I | |||
| 01 Apr, 2024 | Funds Management Llc Fairmount | Common Stock | D | 58,857 | - | 0 | I | J |
| 01 Apr, 2024 | Funds Management Llc Fairmount | Common Stock | A | 58,857 | - | 2,700,691 | I | J |
| 22 Jan, 2024 | Leon O Jr Moulder | Common Stock | A | 166,667 | $12.00 | 1,436,745 | I | A |
| 22 Jan, 2024 | Funds Management Llc Fairmount | Common Stock | A | 834,334 | $12.00 | 2,762,837 | I | A |
| 22 Jan, 2024 | Lei Meng | - | - | 2,717,554 | I |