A. Brooke Seawell is Director at NVIDIA CORP (NVDA). They have made 71 open-market trades across 4 companies since 2006, most recently 2026-06-25.
CIK 0001197652
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.
3 open-market purchases totalling $2.3M since 2011, against 68 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DATA | 30,000 | $5.1M |
| NVDA | 7,818 | $1.7M |
| TENB | 15,292 | $569K |
| INFA | 17,027 | $422K |
| GLUU | 10,000 | $125K |
| Total | $7.9M |
Shares reported on the most recent Form 4, priced at the 2026-06-29 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 |
|---|---|---|---|---|---|---|---|---|
| TENB | SELL | 2025-12-15 | 2025-12-17 | $24.82 | $2.9M | -3.8% | -10.7% | -18.3% |
| NVDA | SELL | 2025-12-02 | 2025-12-04 | $183.93 | $4.7M | -3.4% | +2.3% | -0.5% |
| TENB | SELL | 2025-09-09 | 2025-09-11 | $30.80 | $462K | -1.3% | -3.8% | -12.1% |
| TENB | SELL | 2025-09-04 | 2025-09-08 | $30.12 | $278K | -2.6% | -4.1% | -15.1% |
| NVDA | SELL · 10b5-1 | 2025-07-11 | 2025-07-15 | $165.11 | $32.0M | +1.4% | +6.4% | +10.1% |
| NVDA | SELL · 10b5-1 | 2025-07-08 | 2025-07-10 | $161.72 | $47.7M | +2.0% | +11.2% | +15.5% |
| NVDA | SELL · 10b5-1 | 2025-07-02 | 2025-07-07 | $156.98 | $32.0M | +8.6% | +12.6% | +16.5% |
| NVDA | SELL · 10b5-1 | 2025-06-30 | 2025-07-01 | $155.87 | $32.0M | +7.2% | +16.3% | +18.9% |
| NVDA | SELL · 10b5-1 | 2025-06-25 | 2025-06-27 | $154.63 | $48.0M | +3.6% | +11.6% | +12.2% |
| NVDA | SELL · 10b5-1 | 2025-06-20 | 2025-06-24 | $145.07 | $48.0M | +6.0% | +16.4% | +23.0% |
| NVDA | SELL | 2024-05-28 | 2024-05-30 | $1117.72 | $3.2M | +7.5% | +10.5% | +11.6% |
| TENB | SELL | 2024-02-09 | 2024-02-13 | $51.12 | $507K | -5.8% | -8.1% | -10.6% |
| NVDA | SELL | 2023-06-14 | 2023-06-15 | $424.69 | $730K | -5.4% | +6.9% | +4.7% |
| NVDA | SELL | 2021-11-19 | 2021-11-22 | $328.91 | $563K | -2.7% | -6.8% | -25.8% |
| NVDA | SELL | 2021-09-01 | 2021-09-03 | $224.34 | $9.0M | -2.6% | -13.6% | +40.7% |
| NVDA | SELL | 2021-06-16 | 2021-06-21 | $706.98 | $503K | +9.4% | +5.1% | +14.3% |
| TENB | SELL | 2021-06-08 | 2021-06-10 | $42.79 | $571K | +4.5% | -4.4% | +6.9% |
| NVDA | SELL | 2020-12-01 | 2020-12-03 | $540.52 | $385K | -0.7% | -2.5% | -4.8% |
| NVDA | SELL | 2020-09-15 | 2020-09-17 | $513.77 | $5.1M | +5.1% | +7.2% | +5.2% |
| NVDA | SELL | 2020-05-26 | 2020-05-28 | $366.27 | $461K | +5.7% | +7.5% | +49.3% |
| TENB | SELL | 2020-05-21 | 2020-05-26 | $29.45 | $198K | -2.7% | +1.4% | +16.2% |
| NVDA | SELL | 2020-02-18 | 2020-02-20 | $287.91 | $11.5M | -12.6% | -30.1% | +17.9% |
| NVDA | SELL | 2019-12-13 | 2019-12-17 | $225.85 | $435K | +1.1% | +8.4% | -14.5% |
| NVDA | SELL | 2019-11-26 | 2019-11-26 | $220.50 | $277K | -3.0% | +9.4% | +25.0% |
| NVDA | SELL | 2019-11-18 | 2019-11-20 | $212.75 | $4.3M | -1.6% | +13.4% | +40.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.