William Lis is CEO at PORTOLA PHARMACEUTICALS INC (PTLA). They have made 10 open-market trades across 3 companies since 2014, most recently 2026-08-12.
CIK 0001574558
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ZLAB | SELL · 10b5-1 | 2026-08-12 | 2026-08-13 | $25.00 | $213K | +3.0% | -3.3% | — |
| ZLAB | SELL · 10b5-1 | 2026-06-22 | 2026-06-24 | $18.09 | $127K | +4.1% | +3.7% | +42.2% |
| ZLAB | SELL · 10b5-1 | 2025-06-20 | 2025-06-23 | $35.67 | $985K | -3.1% | -0.5% | -11.8% |
| ZLAB | SELL · 10b5-1 | 2025-02-28 | 2025-03-04 | $32.98 | $989K | +8.9% | +4.6% | -11.1% |
| ZLAB | SELL · 10b5-1 | 2024-07-01 | 2024-07-03 | $17.31 | $358K | +8.0% | +5.8% | +44.5% |
| JSPR | SELL · 10b5-1 | 2023-10-13 | 2023-10-13 | $0.85 | $7K | -16.8% | -26.2% | -13.2% |
| JSPR | SELL | 2023-04-13 | 2023-04-14 | $1.44 | $12K | -15.0% | +11.4% | +1.4% |
| ZLAB | SELL | 2023-03-03 | 2023-03-07 | $38.31 | $416K | -9.0% | -10.4% | -4.8% |
| JSPR | SELL | 2022-06-24 | 2022-06-28 | $2.06 | $153K | +7.1% | -7.1% | -61.4% |
| ZLAB | SELL | 2022-01-20 | 2022-01-21 | $53.40 | $206K | +8.9% | +17.6% | -13.8% |
| PTLA | SELL | 2018-06-06 | 2018-06-08 | $45.21 | $462K | +0.5% | -6.7% | -33.0% |
| PTLA | SELL | 2017-06-28 | 2017-06-29 | $55.35 | $783K | +10.5% | +9.7% | -4.4% |
| PTLA | SELL | 2017-06-27 | 2017-06-29 | $55.38 | $13.4M | +10.5% | +9.7% | -4.4% |
| PTLA | SELL | 2017-06-27 | 2017-06-29 | $55.43 | $14.9M | +10.5% | +9.7% | -4.4% |
| PTLA | SELL | 2017-04-11 | 2017-04-14 | $36.06 | $487K | +2.0% | +9.5% | +66.2% |
| PTLA | SELL | 2016-05-02 | 2016-05-03 | $23.86 | $271K | +3.3% | +22.1% | +16.1% |
| PTLA | SELL · 10b5-1 | 2015-07-15 | 2015-07-15 | $50.00 | $2.5M | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2015-07-02 | 2015-07-02 | $45.60 | $684K | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2015-06-30 | 2015-07-01 | $45.01 | $1.4M | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2015-04-30 | 2015-05-01 | $35.60 | $1.6M | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2015-01-20 | 2015-01-20 | $27.32 | $546K | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2015-01-15 | 2015-01-16 | $26.95 | $539K | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2014-11-18 | 2014-11-20 | $26.95 | $1.1M | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2014-11-13 | 2014-11-17 | $26.69 | $801K | -25.1% | -4.2% | -4.2% |
| PTLA | SELL · 10b5-1 | 2014-07-01 | 2014-07-03 | $30.41 | $912K | -25.1% | -4.2% | -4.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.