Mark Casper is CLO & VP at Marvell Technology, Inc. (MRVL). They have made 7 open-market trades across 2 companies since 2022, most recently 2026-10-15.
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 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NEM | 18,217 | $2.2M |
| MRVL | 4,362 | $993K |
| Total | $3.2M |
Shares reported on the most recent Form 4, priced at the 2026-10-16 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 |
|---|---|---|---|---|---|---|---|---|
| MRVL | SELL | 2026-04-17 | 2026-04-21 | $135.50 | $1.4M | +7.3% | +24.1% | +26.8% |
| MRVL | SELL | 2026-04-06 | 2026-04-07 | $109.45 | $755K | +22.5% | +40.4% | +118.6% |
| MRVL | SELL | 2026-04-01 | 2026-04-02 | $106.27 | $1.9M | +23.0% | +49.4% | +148.8% |
| MRVL | SELL | 2026-01-05 | 2026-01-07 | $93.08 | $465K | -5.8% | -5.2% | +29.1% |
| MRVL | SELL | 2025-12-05 | 2025-12-08 | $101.00 | $127K | -7.8% | -7.6% | +1.2% |
| MRVL | SELL | 2025-07-18 | 2025-07-21 | $72.35 | $434K | +10.1% | -2.4% | +17.6% |
| MRVL | SELL · 10b5-1 | 2025-05-19 | 2025-05-19 | $61.10 | $38K | -1.2% | +23.0% | +25.9% |
| MRVL | SELL · 10b5-1 | 2025-04-23 | 2025-04-24 | $55.00 | $685K | +7.4% | +12.0% | +28.6% |
| MRVL | SELL · 10b5-1 | 2025-02-18 | 2025-02-19 | $107.61 | $270K | -22.4% | -36.4% | -44.5% |
| MRVL | SELL · 10b5-1 | 2025-01-17 | 2025-01-17 | $123.08 | $1.9M | -12.3% | -14.7% | -58.9% |
| MRVL | SELL · 10b5-1 | 2025-01-02 | 2025-01-06 | $113.00 | $283K | +3.6% | -3.3% | -57.6% |
| MRVL | SELL · 10b5-1 | 2024-10-01 | 2024-10-02 | $70.83 | $177K | +9.4% | +19.3% | +55.5% |
| MRVL | SELL · 10b5-1 | 2024-07-01 | 2024-07-02 | $70.07 | $350K | +3.7% | -11.2% | +1.6% |
| MRVL | SELL · 10b5-1 | 2024-04-19 | 2024-04-22 | $64.75 | $162K | +4.8% | +15.8% | +8.5% |
| NEM | SELL | 2022-11-02 | 2022-11-03 | $41.98 | $411K | +16.4% | +20.9% | +38.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.