Dianthus Therapeutics, Inc. (DNTH) Insider Trading
Over the last 3 months, DNTH insiders made 0 open-market buys and 27 sales, a net sale of -$27.2M (SEC Form 4). Over the last 6 months, 202 institutions increased and 124 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
27
Net (3m)
-$27.2M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +16.7%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 19, 2026 | Read Simondirector | Option | 2,778 | $18.36 |
| Aug 19, 2026 | Read Simondirector | Sell | 2,778 | $117.55 |
| Aug 14, 2026 | Veness Adam Mofficer: SVP, General Counsel and Sec. | Option | 15,000 | $18.17 |
| Aug 11, 2026 | Read Simondirector | Option | 2,777 | $18.36 |
| Aug 11, 2026 | Read Simondirector | Sell | 272 | $109.96 |
| Aug 11, 2026 | McGeorge Annedirector | Sell | 700 | $111.41 |
| Aug 11, 2026 | McGeorge Annedirector | Sell | 1,000 | $110.64 |
| Aug 11, 2026 | McGeorge Annedirector | Sell | 1,800 | $109.30 |
| Aug 11, 2026 | Read Simondirector | Sell | 470 | $111.05 |
| Aug 11, 2026 | Read Simondirector | Sell | 397 | $111.77 |
| Aug 11, 2026 | Veness Adam Mofficer: SVP, General Counsel and Sec. | Option | 3,833 | $17.88 |
| Aug 11, 2026 | Veness Adam Mofficer: SVP, General Counsel and Sec. | Sell | 3,217 | $110.61 |
| Aug 11, 2026 | Veness Adam Mofficer: SVP, General Counsel and Sec. | Sell | 616 | $111.18 |
| Aug 11, 2026 | Veness Adam Mofficer: SVP, General Counsel and Sec. | Option | 16,167 | $17.88 |
| Aug 11, 2026 | Veness Adam Mofficer: SVP, General Counsel and Sec. | Sell | 16,167 | $110.38 |
| Aug 11, 2026 | Read Simondirector | Sell | 831 | $108.95 |
| Aug 11, 2026 | McGeorge Annedirector | Sell | 2,800 | $108.38 |
| Aug 11, 2026 | McGeorge Annedirector | Sell | 1,450 | $107.58 |
| Aug 11, 2026 | McGeorge Annedirector | Option | 1,250 | $19.36 |
| Aug 11, 2026 | McGeorge Annedirector | Option | 6,500 | $11.20 |
| Aug 11, 2026 | Read Simondirector | Sell | 737 | $108.17 |
| Aug 11, 2026 | Read Simondirector | Sell | 70 | $107.11 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Option | 126,000 | $8.44 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 21,909 | $108.72 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 104,091 | $107.96 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 800 | $110.76 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 2,536 | $110.02 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 2,373 | $109.10 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 23,907 | $108.05 |
| Aug 7, 2026 | Garcia Marinodirector, officer: CEO AND PRESIDENT | Sell | 10,384 | $107.49 |
Source: DNTH SEC Form 4 filings, latest Aug 19, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their DNTH positions over the last 6 months (SEC Form 13F).
Increased
202
New positions
161
Reduced
124
Sold out
32
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 8.2M | Aug 13, 2026 |
| FMR LLC | Increased | 7.8M | May 15, 2026 |
| BlackRock, Inc. | Increased | 4.1M | Aug 7, 2026 |
| T. Rowe Price Investment Management, Inc. | Increased | 3.9M | Aug 14, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 3.2M | Aug 14, 2026 |
| BLACKROCK, INC. | Increased | 3.2M | May 13, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Increased | 2.6M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 2.6M | May 15, 2026 |
| FAIRMOUNT FUNDS MANAGEMENT LLC | Increased | 2.5M | May 15, 2026 |
| Fairmount Funds Management LLC | Unchanged | 2.5M | Aug 14, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 2.5M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 2.4M | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.2M | Aug 13, 2026 |
| Avidity Partners Management LP | Unchanged | 2.1M | Aug 14, 2026 |
| AVIDITY PARTNERS MANAGEMENT LP | Unchanged | 2.1M | May 28, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.