Clay B. Siegall is CEO & President at SEATTLE GENETICS INC /WA (SGEN). They have made 129 open-market trades across 5 companies since 2007, most recently 2026-07-23.
CIK 0001167496
10 open-market purchases totalling $12.1M since 2023, against 119 sales. Across 10 scored buys the stock is up 2.4% at ninety days, and 0.4 points ahead of the S&P over the same stretch.
10 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| SGEN | 666,060 | $152.4M |
| IMNM | 870,704 | $14.3M |
| STTK | 318,608 | $1.7M |
| ALDR | 22,624 | $427K |
| RARE | 12,300 | $179K |
| Total | $169.0M |
Shares reported on the most recent Form 4, priced at the 2026-07-27 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 70% | 30% |
| Avg Move | +2.2% | +7.3% | +2.4% |
| Alpha | +2.6% | +6.0% | +0.4% |
| Scored | 10 | 10 | 10 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| STTK | BUY | 2026-06-09 | 2026-06-11 | $4.00 | $250K | +30.9% | +39.6% | +37.8% |
| IMNM | BUY | 2026-03-27 | 2026-03-31 | $19.67 | $501K | +1.8% | +3.2% | -5.3% |
| IMNM | BUY | 2025-12-30 | 2025-12-30 | $21.15 | $200K | -3.5% | +17.6% | -9.5% |
| IMNM | BUY | 2025-12-19 | 2025-12-22 | $20.48 | $298K | -10.0% | +13.6% | -5.3% |
| IMNM | BUY | 2025-12-18 | 2025-12-18 | $21.50 | $2.0M | +3.7% | +15.3% | -0.4% |
| IMNM | BUY | 2025-03-26 | 2025-03-26 | $7.29 | $999K | -22.6% | +10.5% | +17.4% |
| IMNM | BUY | 2025-01-31 | 2025-02-03 | $7.75 | $1.2M | -6.5% | -16.6% | -23.8% |
| IMNM | BUY | 2024-11-21 | 2024-11-25 | $9.62 | $1.9M | +23.1% | -0.4% | -16.1% |
| IMNM | BUY | 2024-05-20 | 2024-05-21 | $13.88 | $2.8M | -2.1% | -15.6% | -4.0% |
| IMNM | BUY | 2023-10-02 | 2023-10-04 | $5.91 | $2.0M | +7.6% | +5.5% | +32.8% |
| SGEN | SELL | 2022-05-12 | 2022-05-13 | $125.57 | $3.5M | +1.7% | +4.0% | +29.7% |
| SGEN | SELL | 2022-04-20 | 2022-04-22 | $144.32 | $544K | -3.6% | +1.3% | +25.8% |
| SGEN | SELL | 2022-04-07 | 2022-04-08 | $154.21 | $4.6M | -5.9% | -27.6% | +18.4% |
| SGEN | SELL | 2022-03-07 | 2022-03-09 | $134.46 | $3.2M | +2.8% | +10.3% | +4.8% |
| SGEN | SELL | 2022-02-07 | 2022-02-09 | $139.97 | $4.7M | +1.0% | +12.8% | -1.5% |
| SGEN | SELL | 2022-01-07 | 2022-01-11 | $144.65 | $4.8M | -10.3% | -13.5% | -0.1% |
| SGEN | SELL | 2021-12-20 | 2021-12-22 | $149.85 | $368K | -2.8% | -18.8% | -9.0% |
| SGEN | SELL | 2021-12-07 | 2021-12-09 | $148.70 | $13.3M | +8.6% | +0.6% | -2.6% |
| SGEN | SELL | 2021-08-31 | 2021-09-02 | $167.52 | $4.8M | -2.9% | +10.6% | +1.1% |
| SGEN | SELL | 2021-08-27 | 2021-08-31 | $168.32 | $14.8M | -8.8% | +2.6% | -0.2% |
| SGEN | SELL | 2021-08-16 | 2021-08-18 | $154.55 | $862K | +6.4% | -1.4% | +15.1% |
| SGEN | SELL | 2021-08-05 | 2021-08-06 | $162.31 | $9.2M | +2.0% | -4.0% | +21.5% |
| SGEN | SELL | 2021-07-01 | 2021-07-06 | $157.03 | $9.2M | -3.7% | +6.7% | +13.9% |
| SGEN | SELL | 2021-06-03 | 2021-06-04 | $144.24 | $7.2M | +2.8% | +3.6% | +7.2% |
| SGEN | SELL | 2021-05-06 | 2021-05-07 | $134.97 | $7.9M | +7.3% | +11.2% | +17.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.