8 insiders reported 101 Form 4 transactions for Protagonist Therapeutics, Inc (PTGX) over the past 18 months (most recent 2026-06-25). Recent activity: Waddill William D. (Director) Sell 9,000 shares, Waddill William D. (Director) Buy 9,000 shares, Waddill William D. (Director) Buy 3,000 shares, Waddill William D. (Director) Buy 6,000 shares, Waddill William D. (Director) Sell 9,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-25 | Waddill William D. | Director | Sell | 9,000 | $1.1M |
| 2026-06-25 | Waddill William D. | Director | Buy | 9,000 | $148,860 |
| 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 | Buy | 75,000 | $1.6M |
| 2026-05-14 | PATEL DINESH V PH D | President and CEO | Sell | 75,000 | $7.5M |
| 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 | 12,000 | $83,760 |
| 2026-05-11 | Giraudo Bryan | Director | Buy | 24,000 | $154,800 |
| 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 |
| 2026-05-11 | Giraudo Bryan | Director | Sell | 36,000 | $3.6M |
| 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 | Ali Asif | Chief Financial Officer | Buy | 5,265 | $64,075 |
| 2026-03-27 | SELICK HAROLD E | Director | Buy | 24,000 | $309,120 |
| 2026-03-27 | SELICK HAROLD E | Director | Sell | 24,000 | $2.5M |
| 2026-03-27 | MOLINA ARTURO MD | Chief Medical Officer | Buy | 15,000 | $120,600 |
| 2026-03-27 | MOLINA ARTURO MD | Chief Medical Officer | Sell | 15,000 | $1.6M |
| 2026-03-27 | Ali Asif | Chief Financial Officer | Buy | 19,500 | $374,205 |
Source: SEC Form 4 filings · as of 2026-06-25