Mark Slicer
CIK 1930126 · Chief Financial Officer · last filed 2025-06-13
Mark Slicer is a Chief Financial Officer who has filed 14 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing, for ONTO, was dated Jun 13, 2025. Across all open-market trades the lifetime net is −$780.0K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.4M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$4.42M
1
14
-$780.0K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ONTO | Chief Financial Officer | 13,640 | $323.88 | $4.42M | -$780.0K | 14 | 2025-06-13 |
Recent Filings
14 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-06-13 | ONTO | — | — | $0 | EDGAR |
| 2025-05-19 | ONTO | Tax (F) | −2,066 | -$205.4K | EDGAR |
| 2025-03-05 | ONTO | Grant (A) | +2,941 | $0 | EDGAR |
| 2025-03-03 | ONTO | Tax (F) | −336 | -$48.9K | EDGAR |
| 2025-02-19 | ONTO | Mixed | +2,168 | -$423.0K | EDGAR |
| 2024-11-18 | ONTO | Sell (S) | −1,100 | -$176.5K | EDGAR |
| 2024-06-10 | ONTO | Sell (S) | −1,038 | -$227.5K | EDGAR |
| 2024-05-21 | ONTO | Tax (F) | −1,633 | -$365.0K | EDGAR |
| 2024-03-05 | ONTO | Grant (A) | +2,077 | $0 | EDGAR |
| 2024-02-16 | ONTO | Tax (F) | −484 | -$83.8K | EDGAR |