Protagonist Therapeutics Inc (PTGX)
Who owns Protagonist Therapeutics Inc (PTGX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 81.6% of the shares are freely tradable; institutional investors hold 125.3%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.21 | 9,779,369 | +0.7 | 03/31/2026 |
| Farallon Capital Management, L.L.C. | 9.87 | 6,348,906 | +3.3 | 03/31/2026 |
| Vanguard Group Inc | 8.42 | 5,413,690 | +27.2 | 12/31/2025 |
| UBS Group AG | 8.05 | 5,177,796 | +86.9 | 03/31/2026 |
| RTW INVESTMENTS, LLC | 7.87 | 5,059,053 | +0.0 | 03/31/2026 |
| Wellington Management Company LLP | 5.60 | 3,599,644 | +13.5 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.41 | 3,481,211 | +0.0 | 03/31/2026 |
| State Street Corp | 4.85 | 3,116,749 | -2.6 | 03/31/2026 |
| HHG PLC | 4.50 | 2,891,527 | +9.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.54 | 3,565,262 | +0.0 | 05/29/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 20. Apr 2026 | Asif Ali | CFO | Sell | 1,750 | 105.47 | 184,573 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.