Updated Jul 16, 2026
Waddill William D. has filed 4 SEC Form 4 filings across 2 companies in the last 90 days — selling. Lifetime open-market sales: $6.24M.

| Role | Director |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-25 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 9.0K | $117.94 | $1.06M |
| 2026-06-25 | PTGX | Protagonist Therapeutics, Inc | M — Option exercise | 9.0K | $16.54 | $149K |
| 2026-06-11 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 9.0K | $107.68 | $969K |
| 2026-06-11 | PTGX | Protagonist Therapeutics, Inc | M — Option exercise | 6.0K | $16.54 | $99K |
| 2026-06-11 | PTGX | Protagonist Therapeutics, Inc | M — Option exercise | 3.0K | $11.80 | $35K |
| 2026-06-01 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 9.0K | $99.64 | $897K |
| 2026-06-01 | PTGX | Protagonist Therapeutics, Inc | M — Option exercise | 9.0K | $11.80 | $106K |
| 2026-02-06 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 20.0K | $83.68 | $1.67M |
| 2026-02-06 | PTGX | Protagonist Therapeutics, Inc | M — Option exercise | 20.0K | $8.31 | $166K |
| 2025-10-10 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 8.0K | $87.81 | $702K |
| 2025-10-10 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 4.0K | $69.25 | $277K |
| 2025-10-10 | PTGX | Protagonist Therapeutics, Inc | M — Option exercise | 12.0K | $6.98 | $84K |
| 2025-09-22 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 4.0K | $64.25 | $257K |
| 2025-08-27 | PTGX | Protagonist Therapeutics, Inc | S — Open-market sale | 4.0K | $59.25 | $237K |
| 2024-12-20 | ARWR | ARROWHEAD PHARMACEUTICALS, INC. | A — Grant or award | 16.7K | $22.99 | $385K |
| 2024-12-18 | ARWR | ARROWHEAD PHARMACEUTICALS, INC. | S — Open-market sale [10b5-1] | 3.7K | $22.04 | $83K |
| 2024-12-18 | ARWR | ARROWHEAD PHARMACEUTICALS, INC. | S — Open-market sale [10b5-1] | 3.7K | $21.90 | $82K |
Waddill William D. is a corporate insider — currently tracked as Director of Protagonist Therapeutics, Inc (PTGX). InsiderAlpha tracks every SEC Form 4 filing in real time.
4 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 0 open-market purchases () and 10 open-market sales ($6.24M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Waddill William D. profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.