Plisinski Michael P — SEC Form 4 filings
SEC reporting owner CIK 1325550. 15 Form 4 filings on record with FilingPulse; latest filed 2026-03-04.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2024-02-12 to 2026-03-04. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 11 legs across 4 filings — 125,000 shares, $25,031,892 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 37.
- Largest priced transaction: sale of 35,000 shares @ $219.19 ($7,671,650) in ONTO INNOVATION INC., filed 2025-01-22.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| ONTO INNOVATION INC. (ONTO) | Chief Executive Officer, Director | 15 | — | 11 legs · 125,000 sh · $25,031,892 | 37 |
Form 4 filings — Plisinski Michael P
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-04 | 4 | ONTO INNOVATION INC. (ONTO) | Grant/award (A): 14,479 @ $0 · Tax withholding (F): 3,742 @ $207.50 · Grant/award (A): 7,239 (derivative) @ $0 · Grant/award (A): 7,239 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | ONTO INNOVATION INC. (ONTO) | Option exercise (M): 4,597 @ $0 · Tax withholding (F): 2,222 @ $215.89 · Tax withholding (F): 1,925 @ $215.89 · Option exercise (M): 5,971 (derivative) @ $0 | EDGAR |
| 2026-02-18 | 4 | ONTO INNOVATION INC. (ONTO) | Option exercise (M): 18,445 @ $0 · Tax withholding (F): 8,919 @ $217.23 · Tax withholding (F): 3,632 @ $217.23 · Option exercise (M): 11,824 (derivative) @ $0 | EDGAR |
| 2025-12-29 | 4 | ONTO INNOVATION INC. (ONTO) | Gift (G): 25,000 @ $0 | EDGAR |
| 2025-03-05 | 4 | ONTO INNOVATION INC. (ONTO) | Grant/award (A): 23,212 @ $0 · Grant/award (A): 11,606 (derivative) @ $0 · Grant/award (A): 11,606 (derivative) @ $0 | EDGAR |
| 2025-03-03 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 1,925 @ $145.66 | EDGAR |
| 2025-02-19 | 4 | ONTO INNOVATION INC. (ONTO) | Option exercise (M): 23,650 @ $0 · Tax withholding (F): 11,435 @ $176.55 · Tax withholding (F): 3,812 @ $176.55 · Option exercise (M): 11,825 (derivative) @ $0 | EDGAR |
| 2025-02-12 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 2,859 @ $183.28 · Option exercise (M): 19,048 @ $0 · Tax withholding (F): 9,210 @ $183.28 · Option exercise (M): 9,524 (derivative) @ $0 | EDGAR |
| 2025-01-22 | 4 | ONTO INNOVATION INC. (ONTO) | Sale (S): 35,000 @ $219.19 | EDGAR |
| 2025-01-21 | 4 | ONTO INNOVATION INC. (ONTO) | Sale (S): 29,900 @ $211.24 · Sale (S): 100 @ $212.11 | EDGAR |
| 2025-01-16 | 4 | ONTO INNOVATION INC. (ONTO) | Sale (S): 18,268 @ $200.09 · Sale (S): 1,732 @ $201.26 | EDGAR |
| 2024-03-22 | 4 | ONTO INNOVATION INC. (ONTO) | Sale (S): 4,344 @ $172.83 · Sale (S): 6,270 @ $173.96 · Sale (S): 2,060 @ $174.79 · Sale (S): 22,596 @ $176 · Sale (S): 1,816 @ $177.04 · Sale (S): 2,914 @ $178.16 | EDGAR |
| 2024-03-05 | 4 | ONTO INNOVATION INC. (ONTO) | Grant/award (A): 11,943 @ $0 · Grant/award (A): 5,971 (derivative) @ $0 · Grant/award (A): 5,971 (derivative) @ $0 | EDGAR |
| 2024-02-16 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 3,812 @ $173.08 | EDGAR |
| 2024-02-12 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 4,032 @ $164.76 · Option exercise (M): 24,834 @ $0 · Tax withholding (F): 12,003 @ $164.76 · Tax withholding (F): 3,071 @ $180.01 · Option exercise (M): 19,050 @ $0 · Tax withholding (F): 9,211 @ $180.01 · +2 more | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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