🕵️ Protagonist Therapeutics, Inc. ($PTGX)
SEC insider & ownership activity, last 12 months · CIK 1377121 · every row links its SEC filing
Over the last 12 months insiders sold $47.7M with no open-market buying against it. Dinesh Patel sold $19.9M (Jan–May). 1 planned sale is pending, the largest $3.6M (Bryan Giraudo). No red-flag 8-Ks in the window.
🚨 3 signals active —
planned-vs-executed verdicts, pre-event flags, and cluster context live in the
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 7 sellers, $47.7M (33 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Dinesh Patel | 0 | – | 8 | $19.9M | May 12, 2026 |
| Asif Ali | 0 | – | 5 | $7.3M | Apr 20, 2026 |
| William Waddill | 0 | – | 8 | $6.1M | Jun 23, 2026 |
| Bryan M & Courtney L Giraudo RT | 0 | – | 4 | $5.9M | May 8, 2026 |
| Arturo Molina | 0 | – | 6 | $4.5M | Mar 26, 2026 |
| Harold Selick | 0 | – | 1 | $2.5M | Mar 26, 2026 |
| Lewis T Williams | 0 | – | 1 | $1.5M | Feb 17, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 13.8% | 13G | Oct 17, 2025 | filing ↗ | |
| Joshua J. Dapice | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Dreyfuss, Philip D. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Hannah E. Dunn | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Gehani, Varun N. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Giauque, Nicolas | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Husen, Avner A. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| KIM, David T. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| LINN, Michael G. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| LUO Patrick (CHENG) | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Roberts, JR., Thomas G. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Edric C. Saito | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Daniel S. Short | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Spokes, Andrew J. M. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Warren, JOHN R. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Wehrly, MARK C. | 10.0% | 13G | Feb 6, 2026 | filing ↗ | |
| Farallon Partners, L.L.C. | 9.8% | 13G | Feb 6, 2026 | filing ↗ | |
| RTW Investments, LP | 8.1% | 13G | Feb 17, 2026 | filing ↗ | |
| Roderick Wong | 8.1% | 13G | Feb 17, 2026 | filing ↗ | |
| Farallon Healthcare Partners Master, L.P. | 7.6% | 13G | Feb 6, 2026 | filing ↗ | |
| Farallon Healthcare Partners (GP), L.L.C. | 7.6% | 13G | Feb 6, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.5% | 13G | Apr 29, 2026 | filing ↗ | |
| Wellington Management Group LLP | 5.1% | 13G | Feb 10, 2026 | filing ↗ | |
| Wellington Group Holdings LLP | 5.1% | 13G | Feb 10, 2026 | filing ↗ | |
| Wellington Investment Advisors Holdings LLP | 5.1% | 13G | Feb 10, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.1% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| William Waddill | $1.0M | Jun 23, 2026 | filing ↗ |
| William Waddill | $953K | Jun 10, 2026 | filing ↗ |
| William Waddill | $904K | May 29, 2026 | filing ↗ |
| Dinesh Patel | $7.8M | May 12, 2026 | filing ↗ |
| Bryan M & Courtney L Giraudo RT | $1.1M | May 8, 2026 | filing ↗ |
| Bryan Giraudo | $3.6M | May 7, 2026 | filing ↗ |
| Bryan M & Courtney L Giraudo RT | $1.2M | May 7, 2026 | filing ↗ |
| Asif Ali | $185K | Apr 20, 2026 | filing ↗ |
| Harold Selick | $2.5M | Mar 26, 2026 | filing ↗ |
| Asif Ali | $2.6M | Mar 26, 2026 | filing ↗ |
| Arturo Molina | $1.6M | Mar 26, 2026 | filing ↗ |
| Dinesh Patel | $5.4M | Mar 24, 2026 | filing ↗ |
| Lewis T Williams | $1.5M | Feb 17, 2026 | filing ↗ |
| William D Waddill | $1.7M | Feb 6, 2026 | filing ↗ |
| Asif Ali | $3.8M | Jan 27, 2026 | filing ↗ |
| Arturo Molina | $410K | Jan 27, 2026 | filing ↗ |
| Arturo Molina | $411K | Jan 26, 2026 | filing ↗ |
| Dinesh Patel | $9.2M | Jan 23, 2026 | filing ↗ |
| Arturo Molina | $1.1M | Jan 23, 2026 | filing ↗ |
| Arturo Molina Md | $785K | Jan 20, 2026 | filing ↗ |
| Dinesh V Patel PH D | $2.8M | Jan 20, 2026 | filing ↗ |
| Asif Ali | $708K | Jan 20, 2026 | filing ↗ |
| William Waddill | $804K | Oct 10, 2025 | filing ↗ |
| William Waddill | $249K | Sep 22, 2025 | filing ↗ |
| William Waddill | $228K | Aug 27, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jun 17, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 17, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Earnings (2.02) | Feb 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 25, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 12, 2026 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Earnings (2.02) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |