OH Yoon Ah Insider Trading -- Recent SEC Form 4 Transactions

OH Yoon Ah (CIK 1889970) reported 18 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-18). Recent activity: Sell ONTO (530 shares), Buy ONTO (2,408 shares), Sell ONTO (417 shares), Buy ONTO (724 shares), Sell ONTO (307 shares). Source: SEC Form 4.

DateCompanyRoleTypeSharesValue
2026-05-18ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell530$144,038
2026-03-04ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecBuy2,408$0
2026-03-04ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell417$86,528
2026-03-03ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecBuy724$0
2026-03-03ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell307$66,278
2026-03-03ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell267$57,643
2026-02-18ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecBuy3,084$0
2026-02-18ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell1,094$237,650
2026-02-18ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell501$108,832
2025-05-19ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell603$59,118
2025-03-05ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecBuy2,941$0
2025-03-03ONTO INNOVATION INC. (ONTO)SVP, Gen Counsel & Corp SecSell304$44,281
2025-02-19ONTO INNOVATION INC. (ONTO)VP, General Counsel & Corp SecBuy3,956$0
2025-02-19ONTO INNOVATION INC. (ONTO)VP, General Counsel & Corp SecSell1,830$323,086
2025-02-19ONTO INNOVATION INC. (ONTO)VP, General Counsel & Corp SecSell493$87,039
2025-02-12ONTO INNOVATION INC. (ONTO)VP, General Counsel & Corp SecSell375$68,730
2025-02-12ONTO INNOVATION INC. (ONTO)VP, General Counsel & Corp SecSell1,016$186,212
2025-02-12ONTO INNOVATION INC. (ONTO)VP, General Counsel & Corp SecBuy2,720$0

Source: SEC Form 4 filings · as of 2026-05-18