OH Yoon Ah — SEC Form 4 filings
SEC reporting owner CIK 1889970. 15 Form 4 filings on record with FilingPulse; latest filed 2026-05-18.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2024-02-12 to 2026-05-18. 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): 2 legs across 1 filing — 4,370 shares, $770,383 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 35.
- Largest priced transaction: sale of 2,685 shares @ $173.96 ($467,083) in ONTO INNOVATION INC., filed 2024-03-18.
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) | SVP, Gen Counsel & Corp Sec | 15 | — | 2 legs · 4,370 sh · $770,383 | 35 |
Form 4 filings — OH Yoon Ah
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-05-18 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 530 @ $271.77 | EDGAR |
| 2026-03-04 | 4 | ONTO INNOVATION INC. (ONTO) | Grant/award (A): 2,408 @ $0 · Tax withholding (F): 417 @ $207.50 · Grant/award (A): 1,204 (derivative) @ $0 · Grant/award (A): 1,204 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | ONTO INNOVATION INC. (ONTO) | Option exercise (M): 724 @ $0 · Tax withholding (F): 307 @ $215.89 · Tax withholding (F): 267 @ $215.89 · Option exercise (M): 941 (derivative) @ $0 | EDGAR |
| 2026-02-18 | 4 | ONTO INNOVATION INC. (ONTO) | Option exercise (M): 3,084 @ $0 · Tax withholding (F): 1,094 @ $217.23 · Tax withholding (F): 501 @ $217.23 · Option exercise (M): 1,977 (derivative) @ $0 | EDGAR |
| 2025-05-19 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 603 @ $98.04 | EDGAR |
| 2025-03-05 | 4 | ONTO INNOVATION INC. (ONTO) | Grant/award (A): 2,941 @ $0 · Grant/award (A): 1,471 (derivative) @ $0 · Grant/award (A): 1,470 (derivative) @ $0 | EDGAR |
| 2025-03-03 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 304 @ $145.66 | EDGAR |
| 2025-02-19 | 4 | ONTO INNOVATION INC. (ONTO) | Option exercise (M): 3,956 @ $0 · Tax withholding (F): 1,830 @ $176.55 · Tax withholding (F): 493 @ $176.55 · Option exercise (M): 1,978 (derivative) @ $0 | EDGAR |
| 2025-02-12 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 375 @ $183.28 · Tax withholding (F): 1,016 @ $183.28 · Option exercise (M): 2,720 @ $0 · Option exercise (M): 1,360 (derivative) @ $0 | EDGAR |
| 2024-10-28 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 1,296 @ $204.39 | EDGAR |
| 2024-05-17 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 603 @ $233.63 | EDGAR |
| 2024-03-18 | 4 | ONTO INNOVATION INC. (ONTO) | Sale (S): 2,685 @ $173.96 · Sale (S): 1,685 @ $180 | EDGAR |
| 2024-03-05 | 4 | ONTO INNOVATION INC. (ONTO) | Grant/award (A): 1,883 @ $0 · Grant/award (A): 941 (derivative) @ $0 · Grant/award (A): 941 (derivative) @ $0 | EDGAR |
| 2024-02-16 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 493 @ $173.08 | EDGAR |
| 2024-02-12 | 4 | ONTO INNOVATION INC. (ONTO) | Tax withholding (F): 1,395 @ $180.01 · Option exercise (M): 2,722 @ $0 · Option exercise (M): 1,361 (derivative) @ $0 | 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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