Form 4 for PTGX Protagonist Therapeutics, Inc
Accepted 2026-02-18 00:00:00 ET · period of report 2026-02-17 · accession 0001104659-26-017176 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-02-18 | 2026-02-17 | PTGX | Williams Lewis T | Dir | M - OptEx | $10.84 | +18.0K | 25.8K | +230% | +$195.1K |
| D | 2026-02-18 | 2026-02-17 | PTGX | Williams Lewis T | Dir | S - Sale+OE | $82.42 | -18.0K | 7,825 | -70% | -$1.48M |
| D | 2026-02-18 | 2026-02-17 | PTGX | Williams Lewis T | Dir | M - OptEx | $0.00 | +18.0K | 6,000 | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-17 | M | A | 18,000 | $10.84 | 25,825 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-17 | S | D | 18,000 | $82.42 | 7,825 | D | — | — | (F1) The price reported represents the weighted average sale price per share. The shares were sold in multiple transactions at prices ranging from $81.47 to $83.12. Upon request by the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. |
| 3 | Derivative | Stock Option (right to buy) | 2026-02-17 | M | A | 18,000 | $0.00 | 6,000 | D | $10.84 · — to 2027-06-15 | 18,000 Common Stock | (F2) These stock options are fully vested. |