SEC Insider Transactions from OH Yoon Ah.

Last updated: 2026-03-14 11:55 UTC | Total transactions: 36

OH Yoon Ah has filed 36 insider transactions across 1 company since February 2024.

Most recent transaction: a grant/award of 2408 shares of ONTO INNOVATION INC. ($ONTO) on March 02, 2026.

Activity breakdown: 0 open-market purchases and 2 sales.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
March 2, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec A Common Stock 2408 $0.00 22,057.0000 49,178,000 12.26% 0.00%
March 2, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec A Performance Stock Unit 1204 $0.00 1,204.0000 49,178,000 9999.99% 0.00%
March 2, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec A Performance Stock Unit 1204 $0.00 1,204.0000 49,178,000 9999.99% 0.00%
March 3, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 417 $207.50 21,640.0000 49,178,000 1.89% 0.00%
March 1, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 307 $215.89 19,916.0000 49,178,000 1.52% 0.00%
March 1, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec M Performance Stock Unit 941 $0.00 0.0000 49,178,000 100.00% 0.00%
March 1, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 267 $215.89 19,649.0000 49,178,000 1.34% 0.00%
March 1, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec M Common Stock 724 $0.00 20,223.0000 49,178,000 3.71% 0.00%
Feb. 14, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 1094 $217.23 20,000.0000 49,178,000 5.19% 0.00%
Feb. 14, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec M Performance Stock Unit 1977 $0.00 0.0000 49,178,000 100.00% 0.00%
Feb. 14, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 501 $217.23 19,499.0000 49,178,000 2.51% 0.00%
Feb. 14, 2026 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec M Common Stock 3084 $0.00 21,094.0000 49,178,000 17.12% 0.01%
May 15, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 603 $98.04 18,010.0000 49,660,000 3.24% 0.00%
March 3, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec A Common Stock 2941 $0.00 18,613.0000 49,660,000 18.77% 0.01%
March 3, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec A Performance Stock Unit 1471 $0.00 1,471.0000 49,660,000 9999.99% 0.00%
March 3, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec A Performance Stock Unit 1470 $0.00 1,470.0000 49,660,000 9999.99% 0.00%
March 1, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah SVP, Gen Counsel & Corp Sec F Common Stock 304 $145.66 15,672.0000 49,660,000 1.90% 0.00%
Feb. 14, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 493 $176.55 15,976.0000 49,660,000 2.99% 0.00%
Feb. 14, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec M Common Stock 3956 $0.00 18,299.0000 49,660,000 27.58% 0.01%
Feb. 14, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 1830 $176.55 16,469.0000 49,660,000 10.00% 0.00%
Feb. 14, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec M Performance Stock Unit 1978 $0.00 0.0000 49,660,000 100.00% 0.00%
Feb. 10, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec M Performance Stock Unit 1360 $0.00 0.0000 49,660,000 100.00% 0.00%
Feb. 10, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec M Common Stock 2720 $0.00 14,343.0000 49,660,000 23.40% 0.01%
Feb. 10, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 1016 $183.28 11,623.0000 49,660,000 8.04% 0.00%
Feb. 10, 2025 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 375 $183.28 12,639.0000 49,660,000 2.88% 0.00%
Oct. 25, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah General Counsel F Common Stock 1296 $204.39 13,014.0000 49,694,000 9.06% 0.00%
May 15, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 603 $233.63 14,310.0000 49,318,000 4.04% 0.00%
March 18, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec S Common Stock 1685 $180.00 14,913.0000 49,318,000 10.15% 0.00%
March 15, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec S Common Stock 2685 $173.96 16,598.0000 49,318,000 13.92% 0.01%
March 1, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec A Common Stock 1883 $0.00 19,283.0000 49,318,000 10.82% 0.00%
March 1, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec A Performance Stock Unit 941 $0.00 941.0000 49,318,000 9999.99% 0.00%
March 1, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec A Performance Stock Unit 941 $0.00 941.0000 49,318,000 9999.99% 0.00%
Feb. 14, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 493 $173.08 17,400.0000 49,318,000 2.76% 0.00%
Feb. 10, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec M Common Stock 2722 $0.00 17,893.0000 49,318,000 17.94% 0.01%
Feb. 10, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec M Performance Stock Unit 1361 $0.00 0.0000 49,318,000 100.00% 0.00%
Feb. 10, 2024 ONTO INNOVATION INC. $ONTO OH Yoon Ah VP, General Counsel & Corp Sec F Common Stock 1395 $180.01 15,171.0000 49,318,000 8.42% 0.00%