8 insiders reported 99 Form 4 transactions for Protagonist Therapeutics, Inc (PTGX) over the past 18 months (most recent 2026-08-12). Recent activity: PATEL DINESH V PH D (President and CEO) Buy 65,761 shares, PATEL DINESH V PH D (President and CEO) Sell 65,761 shares, PATEL DINESH V PH D (President and CEO) Buy 34,239 shares, PATEL DINESH V PH D (President and CEO) Sell 34,239 shares, Waddill William D. (Director) Buy 9,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-12 | PATEL DINESH V PH D | President and CEO | Buy | 65,761 | $1.4M |
| 2026-08-12 | PATEL DINESH V PH D | President and CEO | Sell | 65,761 | $9.8M |
| 2026-08-12 | PATEL DINESH V PH D | President and CEO | Buy | 34,239 | $738,878 |
| 2026-08-12 | PATEL DINESH V PH D | President and CEO | Sell | 34,239 | $5.1M |
| 2026-06-25 | Waddill William D. | Director | Buy | 9,000 | $148,860 |
| 2026-06-25 | Waddill William D. | Director | Sell | 9,000 | $1.1M |
| 2026-06-11 | Waddill William D. | Director | Buy | 3,000 | $35,400 |
| 2026-06-11 | Waddill William D. | Director | Buy | 6,000 | $99,240 |
| 2026-06-11 | Waddill William D. | Director | Sell | 9,000 | $969,120 |
| 2026-06-01 | Waddill William D. | Director | Buy | 9,000 | $106,200 |
| 2026-06-01 | Waddill William D. | Director | Sell | 9,000 | $896,760 |
| 2026-05-14 | PATEL DINESH V PH D | President and CEO | Sell | 75,000 | $7.5M |
| 2026-05-14 | PATEL DINESH V PH D | President and CEO | Buy | 75,000 | $1.6M |
| 2026-05-12 | PATEL DINESH V PH D | President and CEO | Buy | 75,000 | $1.6M |
| 2026-05-12 | PATEL DINESH V PH D | President and CEO | Sell | 75,000 | $7.5M |
| 2026-05-11 | Giraudo Bryan | Director | Buy | 24,000 | $154,800 |
| 2026-05-11 | Giraudo Bryan | Director | Buy | 12,000 | $83,760 |
| 2026-05-11 | Giraudo Bryan | Director | Sell | 36,000 | $3.6M |
| 2026-05-11 | Giraudo Bryan | Director | Sell | 12,000 | $1.2M |
| 2026-05-11 | Giraudo Bryan | Director | Sell | 6,000 | $600,000 |
| 2026-05-11 | Giraudo Bryan | Director | Sell | 5,130 | $513,000 |
| 2026-04-24 | PATEL DINESH V PH D | President and CEO | Sell | 1,460 | $0 |
| 2026-04-21 | Ali Asif | Chief Financial Officer | Sell | 1,750 | $184,572 |
| 2026-03-27 | SELICK HAROLD E | Director | Buy | 24,000 | $309,120 |
| 2026-03-27 | SELICK HAROLD E | Director | Sell | 24,000 | $2.5M |
Source: SEC Form 4 filings · as of 2026-08-12