Dianthus Therapeutics's three largest insider shareholders as of August 29, 2026 are Rock Ventures Iv, L.P. Third (TenPercentOwner, 3.06Mn shares), Funds Management Llc Fairmount (Director, 2.76Mn shares), Lei Meng (Director, 2.72Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Rock Ventures Iv, L.P. Third | TenPercentOwner | 3,058,204 | 0 | 3,058,204 | 41.5% | 09 Feb, 2023 |
| 2 | Lei Meng | Director | 0 | 2,717,554 | 2,717,554 | 36.9% | 24 Jan, 2024 |
| 3 | Leon O Jr Moulder | Director | 0 | 1,436,745 | 1,436,745 | 19.5% | 24 Jan, 2024 |
| 4 | Marino Garcia | Ceo And President | 65,292 | 0 | 65,292 | 0.9% | 07 Aug, 2026 |
| 5 | Kristen Stants | Chief People Officer | 20,264 | 0 | 20,264 | 0.3% | 02 Dec, 2022 |
| 6 | Jason Gardner | Director, Officer | 18,305 | 0 | 18,305 | 0.2% | 02 Dec, 2022 |
| 7 | Adam M Veness | Svp, General Counsel And Sec. | 15,000 | 0 | 15,000 | 0.2% | 14 Aug, 2026 |
| 8 | David Wayne Nichols | Chief Technical Officer | 14,306 | 0 | 14,306 | 0.2% | 20 Sep, 2021 |
| 9 | Lisa Olson | Officer | 14,264 | 0 | 14,264 | 0.2% | 20 Sep, 2021 |
| 10 | Simrat Randhawa | Evp, Head Of Rd | 4,000 | 0 | 4,000 | 0.1% | 02 Jun, 2026 |
| 11 | Thomas W. Beetham | Officer | 1,244 | 0 | 1,244 | 0.0% | 02 Dec, 2022 |
| 12 | Caren Deardorf | Chief Commercial Officer | 1,235 | 0 | 1,235 | 0.0% | 02 Dec, 2022 |
| 13 | Stephen F. Mahoney | Officer | 1,079 | 0 | 1,079 | 0.0% | 02 Dec, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 19 Aug, 2026 | Simon Read | Director | Acquired M | 2,778 | $18.36 | $51.00K | 2,778 | Direct |
| 19 Aug, 2026 | Simon Read | Director | Disposed S | 2,778 | $117.55 | $326.55K | 0 | Direct |
| 19 Aug, 2026 | Simon Read | Director | Disposed M | 2,778 | $0.00 | $0 | 19,445 | Direct |
| 13 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Acquired M | 15,000 | $18.17 | $272.55K | 15,000 | Direct |
| 13 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Disposed M | 15,000 | $0.00 | $0 | 73,240 | Direct |
| 07 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Acquired M | 3,833 | $17.88 | $68.53K | 3,833 | Direct |
| 10 Aug, 2026 | Simon Read | Director | Acquired M | 2,777 | $18.36 | $50.99K | 2,777 | Direct |
| 10 Aug, 2026 | Anne Mcgeorge | Director | Acquired M | 1,250 | $19.36 | $24.20K | 1,250 | Direct |
| 07 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Disposed S | 3,217 | $110.61 | $355.83K | 616 | Direct |
| 10 Aug, 2026 | Simon Read | Director | Disposed S | 70 | $107.11 | $7.50K | 2,707 | Direct |
| 10 Aug, 2026 | Anne Mcgeorge | Director | Acquired M | 6,500 | $11.20 | $72.80K | 7,750 | Direct |
| 10 Aug, 2026 | Anne Mcgeorge | Director | Disposed S | 1,450 | $107.58 | $155.99K | 6,300 | Direct |
| 10 Aug, 2026 | Simon Read | Director | Disposed S | 737 | $108.17 | $79.72K | 1,970 | Direct |
| 07 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Disposed S | 616 | $111.18 | $68.49K | 0 | Direct |
| 10 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Acquired M | 16,167 | $17.88 | $289.07K | 16,167 | Direct |
| 10 Aug, 2026 | Anne Mcgeorge | Director | Disposed S | 2,800 | $108.38 | $303.46K | 3,500 | Direct |
| 10 Aug, 2026 | Simon Read | Director | Disposed S | 831 | $108.95 | $90.54K | 1,139 | Direct |
| 10 Aug, 2026 | Simon Read | Director | Disposed S | 272 | $109.96 | $29.91K | 867 | Direct |
| 10 Aug, 2026 | Anne Mcgeorge | Director | Disposed S | 1,800 | $109.30 | $196.74K | 1,700 | Direct |
| 10 Aug, 2026 | Adam M Veness | Svp, General Counsel And Sec. | Disposed S | 16,167 | $110.38 | $1.78Mn | 0 | Direct |