Johanna Roberts is VP & Secretary at Penumbra Inc (PEN). They have made 20 open-market trades across 1 company since 2018, most recently 2026-03-15.
CIK 0001751980
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 20 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PEN | 67,298 | $21.6M |
Shares reported on the most recent Form 4, priced at the 2026-03-17 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PEN | SELL · 10b5-1 | 2025-12-05 | 2025-12-09 | $300.13 | $90K | +9.5% | +9.4% | +17.7% |
| PEN | SELL · 10b5-1 | 2025-12-01 | 2025-12-03 | $294.94 | $177K | +8.2% | +8.3% | +19.1% |
| PEN | SELL · 10b5-1 | 2025-11-25 | 2025-11-26 | $300.06 | $540K | -2.8% | +7.3% | +15.0% |
| PEN | SELL · 10b5-1 | 2025-11-10 | 2025-11-12 | $266.91 | $216K | +7.3% | +12.3% | +22.0% |
| PEN | SELL · 10b5-1 | 2025-10-01 | 2025-10-03 | $249.70 | $150K | -2.0% | -12.2% | +20.1% |
| PEN | SELL · 10b5-1 | 2025-09-02 | 2025-09-04 | $270.21 | $222K | -6.4% | -9.1% | +1.7% |
| PEN | SELL · 10b5-1 | 2025-08-11 | 2025-08-13 | $238.92 | $273K | +4.1% | +7.5% | +10.2% |
| PEN | SELL · 10b5-1 | 2025-07-01 | 2025-07-03 | $252.44 | $220K | -6.5% | -4.2% | -0.5% |
| PEN | SELL · 10b5-1 | 2025-06-02 | 2025-06-04 | $258.17 | $155K | +2.0% | -2.9% | +5.3% |
| PEN | SELL · 10b5-1 | 2025-05-12 | 2025-05-14 | $298.75 | $467K | -4.7% | -10.4% | -13.1% |
| PEN | SELL · 10b5-1 | 2025-04-24 | 2025-04-25 | $300.01 | $180K | -3.6% | -9.1% | -23.3% |
| PEN | SELL · 10b5-1 | 2025-04-01 | 2025-04-02 | $269.11 | $161K | +2.0% | +11.7% | -5.4% |
| PEN | SELL · 10b5-1 | 2025-03-03 | 2025-03-05 | $287.43 | $172K | -2.2% | -7.1% | -8.8% |
| PEN | SELL · 10b5-1 | 2024-12-02 | 2024-12-03 | $244.70 | $216K | +0.3% | -2.0% | +16.7% |
| PEN | SELL · 10b5-1 | 2024-11-18 | 2024-11-19 | $239.81 | $234K | +4.1% | +3.5% | +15.2% |
| PEN | SELL · 10b5-1 | 2024-10-01 | 2024-10-03 | $190.76 | $114K | +4.6% | +16.2% | +21.5% |
| PEN | SELL · 10b5-1 | 2024-09-03 | 2024-09-05 | $206.22 | $124K | -8.5% | -6.7% | +21.8% |
| PEN | SELL · 10b5-1 | 2024-08-13 | 2024-08-15 | $175.78 | $177K | +7.6% | -0.7% | +25.0% |
| PEN | SELL · 10b5-1 | 2024-07-01 | 2024-07-03 | $179.10 | $189K | +10.4% | -1.5% | +7.5% |
| PEN | SELL · 10b5-1 | 2024-06-03 | 2024-06-05 | $188.90 | $113K | -2.7% | -5.9% | +6.5% |
| PEN | SELL · 10b5-1 | 2024-05-13 | 2024-05-15 | $206.95 | $186K | -5.7% | -8.1% | -8.5% |
| PEN | SELL · 10b5-1 | 2024-04-01 | 2024-04-03 | $217.06 | $181K | -2.7% | -3.5% | -18.5% |
| PEN | SELL · 10b5-1 | 2024-03-01 | 2024-03-05 | $237.95 | $193K | -14.2% | -16.8% | -27.4% |
| PEN | SELL · 10b5-1 | 2023-12-01 | 2023-12-05 | $226.42 | $136K | +10.7% | +4.2% | +12.5% |
| PEN | SELL · 10b5-1 | 2023-11-14 | 2023-11-16 | $214.14 | $128K | +0.6% | +9.8% | +19.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.