Maggie Yuen is CFO at Penumbra Inc (PEN). They have made 4 open-market trades across 1 company since 2023, most recently 2026-08-05.
CIK 0001796057
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 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PEN | 18,167 | $5.8M |
| ATRC | 14,015 | $787K |
| Total | $6.6M |
Shares reported on the most recent Form 4, priced at the 2026-08-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ATRC | SELL | 2026-08-05 | 2026-08-07 | $38.42 | $134K | +15.4% | +30.2% | — |
| PEN | SELL · 10b5-1 | 2026-03-02 | 2026-03-04 | $342.30 | $832K | -0.9% | -2.7% | -6.0% |
| ATRC | SELL | 2025-11-21 | 2025-11-25 | $35.72 | $107K | +1.5% | +5.2% | -17.1% |
| PEN | SELL · 10b5-1 | 2025-08-13 | 2025-08-15 | $250.00 | $500K | +5.9% | +4.4% | +10.6% |
| PEN | SELL · 10b5-1 | 2025-05-02 | 2025-05-06 | $299.01 | $598K | -3.4% | -11.1% | -17.3% |
| PEN | SELL · 10b5-1 | 2025-03-03 | 2025-03-05 | $286.11 | $747K | -2.2% | -7.1% | -8.8% |
| ATRC | SELL | 2024-08-15 | 2024-08-19 | $24.07 | $84K | +8.4% | +17.6% | +45.8% |
| ATRC | SELL | 2023-05-26 | 2023-05-30 | $47.04 | $406K | +3.0% | +8.3% | +1.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.