William Spencer Marshall is CEO & Founder at Planet Labs PBC (PL). They have made 2 open-market trades across 1 company since 2021, most recently 2026-09-18.
CIK 0001898468
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.
2 open-market purchases totalling $519K since 2021, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PL | 2,488,473 | $33.8M |
Shares reported on the most recent Form 4, priced at the 2026-09-18 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PL | SELL · 10b5-1 | 2026-07-10 | 2026-07-13 | $25.92 | $5.2M | -14.7% | -6.6% | -39.1% |
| PL | SELL · 10b5-1 | 2026-04-06 | 2026-04-08 | $35.07 | $7.0M | +2.7% | +7.0% | -21.5% |
| PL | SELL · 10b5-1 | 2025-12-26 | 2025-12-30 | $19.36 | $3.9M | +28.8% | +33.5% | +41.3% |
| PL | SELL · 10b5-1 | 2025-10-13 | 2025-10-15 | $15.50 | $3.1M | -14.0% | -26.3% | +63.7% |
| PL | BUY | 2023-09-19 | 2023-09-19 | $2.70 | $270K | -8.1% | -22.6% | -14.1% |
| PL | BUY | 2021-12-22 | 2021-12-23 | $6.47 | $249K | -25.6% | -17.5% | -25.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.