Protagonist Therapeutics
Discovers peptide medicines and earns collaboration economics from partnered ICOTYDE and rusfertide.
$146.05
After-hours close+1.78 (+1.23%)
At close$144.27(−3.50%)
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Breakdown13F · Form 4
Institutions 129.91%Insiders 1.19%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 64.31M · Float 52.49M · 81.6% free float
Institutions13F, as of Jun 30, 2026
357 holders · 83.55M shares · 63 new positions · 208 increased · 87 reduced · 40 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 10.31M | 16.03% | +528.5K | Aug 7, 2026 |
| Farallon Capital Management LLC | 6.35M | 9.87% | 0 | Aug 14, 2026 |
| RTW Investments, LP | 5.06M | 7.87% | +2.1K | Aug 14, 2026 |
| Vanguard Portfolio Management LLC | 3.63M | 5.64% | +148.1K | Aug 13, 2026 |
| Wellington Management Group LLP | 3.42M | 5.31% | −182.9K | Aug 14, 2026 |
| UBS Group AG | 3.40M | 5.29% | −1.78M | Aug 13, 2026 |
| State Street Corp | 3.32M | 5.16% | +204.8K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 2.85M | 4.44% | +47.5K | Aug 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 13.80% | 8.58M | 13G | Oct 17, 2025 ↗ |
| RTW Investments, LP | 8.10% | 5.06M | 13G | Feb 17, 2026 ↗ |
| Vanguard Portfolio Management | 5.53% | 3.53M | 13G | Apr 29, 2026 ↗ |
| State Street Corporation | 5.40% | 3.18M | Oct 16, 2024 ↗ | |
| Wellington Management Group LLP | 5.10% | 3.17M | 13G | Feb 10, 2026 ↗ |
| Vanguard Capital Management | 5.09% | 3.25M | 13G | Apr 30, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Dinesh V. Ph D. Patel | director, officer: President and CEO | 523.5K | 0.81% | Aug 12, 2026 |
| Arturo Md Molina | officer: Chief Medical Officer | 84.1K | 0.13% | Mar 27, 2026 |
| Harold E. Selick | director | 60.8K | 0.09% | Mar 27, 2026 |
| Asif Ali | officer: Chief Financial Officer | 59.0K | 0.09% | Apr 21, 2026 |
| Bryan Giraudo | director | 12.7K | 0.02% | May 11, 2026 |
| William D. Waddill | director | 7.8K | 0.01% | Jun 25, 2026 |
| Lewis T. Williams | director | 7.8K | 0.01% | Feb 18, 2026 |
| Sarah A. O'Dowd | director | 7.8K | 0.01% | Jan 6, 2026 |
4 ten-percent owners hold 5.35M shares by Form 4, outside the officers-and-directors figure above · 9 people have not refiled in the last 18 months (2.53M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 11, 2026 | Dinesh V. Ph D. Pateldirector, officer: President and CEO | Sale | 34,239 | $148.52 | 523,478 |
| Aug 10, 2026 | Dinesh V. Ph D. Pateldirector, officer: President and CEO | Sale | 65,761 | $149.11 | 523,478 |
| Jun 23, 2026 | William D. Waddilldirector | Sale | 9,000 | $117.94 | 7,825 |
| Jun 10, 2026 | William D. Waddilldirector | Sale | 9,000 | $107.68 | 7,825 |
| May 29, 2026 | William D. Waddilldirector | Sale | 9,000 | $99.64 | 7,825 |
| May 12, 2026 | Dinesh V. Ph D. Pateldirector, officer: President and CEO | Sale | 75,000 | $100.12 | 523,478 |
| May 8, 2026 | Bryan Giraudodirector | Sale · 2 lots | 11,130 | $100.00 | 12,695 |
| May 7, 2026 | Bryan Giraudodirector | Sale · 2 lots | 48,000 | $100.12 | 33,825 |
| Apr 20, 2026 | Asif Aliofficer: Chief Financial Officer | Sale | 1,750 | $105.47 | 59,003 |
| Mar 26, 2026 | Asif Aliofficer: Chief Financial Officer | Sale | 24,765 | $104.24 | 60,753 |
CongressHouse and Senate disclosures
Not reported.