Chen Shirley

Officer · ONTO

As of 2026-09-16, Chen Shirley has 4 Form 4 transactions on record across 1 company — 3 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $3.4MIndirect: $0$3.4Mas of 2026-09-16
  • Direct $3.4M
  • Indirect $0
ONTOdirect14,001 sh$3.4M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

ONTO · 4 trades
2026-09-02: Withheld for tax, 1,516 sh ($386K)2026-03-02: Award / grant, 2,523 sh ($0)2026-03-02: Award / grant, 1,261 sh ($0)2025-09-02: Award / grant, 12,994 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
4 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-02ONTOWithheld for tax1,51614,001Form 4
2026-03-02ONTOAward / grant2,52315,517Form 4
2026-03-02ONTOAward / grant1,2611,261Form 4
2025-09-02ONTOAward / grant12,99412,994Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.