ONTO insider transactions

Chief Financial Officer Roberts Brian K was granted 3,096 shares, increasing direct ownership by 15% to 24,271 units (SEC Form 4)

EVP, Prod Solutions Grp Dolev Ido was granted 3,440 shares and covered exercise/tax liability with 819 shares, increasing direct ownership by 11% to 26,536 units (SEC Form 4)

Chief Operating Officer Yaldaei Ramil covered exercise/tax liability with 615 shares and was granted 7,683 shares, increasing direct ownership by 62% to 18,436 units (SEC Form 4)

Chief Executive Officer Plisinski Michael P was granted 14,479 shares and covered exercise/tax liability with 3,742 shares, increasing direct ownership by 6% to 179,242 units (SEC Form 4)

SVP, Gen Counsel & Corp Sec Oh Yoon Ah was granted 2,408 shares and covered exercise/tax liability with 417 shares, increasing direct ownership by 10% to 21,640 units (SEC Form 4)

SVP Customer Success Chen Shirley was granted 2,523 shares, increasing direct ownership by 19% to 15,517 units (SEC Form 4)

Chief Executive Officer Plisinski Michael P converted options into 4,597 shares and covered exercise/tax liability with 4,147 shares, increasing direct ownership by 0.27% to 168,505 units (SEC Form 4)

SVP, Gen Counsel & Corp Sec Oh Yoon Ah converted options into 724 shares and covered exercise/tax liability with 574 shares, increasing direct ownership by 0.77% to 19,649 units (SEC Form 4)

Chief Executive Officer Plisinski Michael P converted options into 18,445 shares and covered exercise/tax liability with 12,551 shares, increasing direct ownership by 4% to 168,055 units (SEC Form 4)

SVP, Gen Counsel & Corp Sec Oh Yoon Ah converted options into 3,084 shares and covered exercise/tax liability with 1,595 shares, increasing direct ownership by 8% to 19,499 units (SEC Form 4)

Chief Executive Officer Plisinski Michael P gifted 25,000 shares, decreasing direct ownership by 13% to 162,161 units (SEC Form 4)

EVP, Prod Solutions Grp Dolev Ido covered exercise/tax liability with 3,183 shares, decreasing direct ownership by 12% to 23,915 units (SEC Form 4)

Chief Operating Officer Yaldaei Ramil covered exercise/tax liability with 594 shares, decreasing direct ownership by 5% to 11,342 units (SEC Form 4)

Chief Financial Officer Roberts Brian K was granted 21,175 shares (SEC Form 4)

SVP, Customer Success Chen Shirley was granted 12,994 shares (SEC Form 4)

SEC Form 3 filed by new insider Chen Shirley

SEC Form 3 filed by new insider Roberts Brian K

SEC Form 4 filed by Chief Financial Officer Slicer Mark

EVP, Prod Solutions Grp Dolev Ido was granted 26,953 shares (SEC Form 4)

SEC Form 4 filed by Director Tsingos Christine A

SEC Form 4 filed by Director Berlinghieri Leo

Director Su May was granted 2,114 shares, increasing direct ownership by 41% to 7,223 units (SEC Form 4)

Director Seams Christopher A was granted 2,114 shares, increasing direct ownership by 6% to 37,752 units (SEC Form 4)

Director Schwartz Stephen S was granted 2,114 shares, increasing direct ownership by 320% to 2,775 units (SEC Form 4)

Director Miller David Brian was granted 2,114 shares, increasing direct ownership by 22% to 11,931 units (SEC Form 4)

Director Lynch Susan D was granted 2,114 shares, increasing direct ownership by 261% to 2,923 units (SEC Form 4)

Director Kelley Stephen Douglas was granted 2,114 shares, increasing direct ownership by 60% to 5,623 units (SEC Form 4)

Chief Financial Officer Slicer Mark covered exercise/tax liability with 2,066 shares, decreasing direct ownership by 13% to 13,640 units (SEC Form 4)

Chief Operating Officer Yaldaei Ramil covered exercise/tax liability with 826 shares, decreasing direct ownership by 7% to 11,791 units (SEC Form 4)

SVP, Gen Counsel & Corp Sec Oh Yoon Ah covered exercise/tax liability with 603 shares, decreasing direct ownership by 3% to 18,010 units (SEC Form 4)

SEC Form 4 filed by SVP Customer Success Vedula Srinivas

Chief Operating Officer Yaldaei Ramil was granted 3,769 shares, increasing direct ownership by 43% to 12,617 units (SEC Form 4)

SVP, Customer Success Vedula Srinivas was granted 2,574 shares, increasing direct ownership by 16% to 18,730 units (SEC Form 4)

Chief Financial Officer Slicer Mark was granted 2,941 shares, increasing direct ownership by 23% to 15,706 units (SEC Form 4)

CEO Plisinski Michael P was granted 23,212 shares, increasing direct ownership by 14% to 187,161 units (SEC Form 4)

SVP, Gen Counsel & Corp Sec Oh Yoon Ah was granted 2,941 shares, increasing direct ownership by 19% to 18,613 units (SEC Form 4)

Chief Operating Officer Yaldaei Ramil covered exercise/tax liability with 305 shares, decreasing direct ownership by 3% to 8,848 units (SEC Form 4)

SVP, Customer Success Vedula Srinivas covered exercise/tax liability with 199 shares, decreasing direct ownership by 1% to 16,156 units (SEC Form 4)

Chief Financial Officer Slicer Mark covered exercise/tax liability with 336 shares, decreasing direct ownership by 3% to 12,765 units (SEC Form 4)

CEO Plisinski Michael P covered exercise/tax liability with 1,925 shares, decreasing direct ownership by 1% to 163,949 units (SEC Form 4)

SVP, Gen Counsel & Corp Sec Oh Yoon Ah covered exercise/tax liability with 304 shares, decreasing direct ownership by 2% to 15,672 units (SEC Form 4)

VP, General Counsel & Corp Sec Oh Yoon Ah converted options into 3,956 shares and covered exercise/tax liability with 2,323 shares, increasing direct ownership by 11% to 15,976 units (SEC Form 4)

CEO Plisinski Michael P converted options into 23,650 shares and covered exercise/tax liability with 15,247 shares, increasing direct ownership by 5% to 165,874 units (SEC Form 4)

Chief Financial Officer Slicer Mark converted options into 4,564 shares and covered exercise/tax liability with 2,396 shares, increasing direct ownership by 20% to 13,101 units (SEC Form 4)

SVP, Customer Success Vedula Srinivas converted options into 2,738 shares and covered exercise/tax liability with 1,855 shares, increasing direct ownership by 6% to 16,355 units (SEC Form 4)

SVP, Customer Success Vedula Srinivas sold $40,360 worth of shares (238 units at $169.58), decreasing direct ownership by 2% to 15,472 units (SEC Form 4)

SVP, Customer Success Vedula Srinivas covered exercise/tax liability with 1,145 shares and converted options into 1,632 shares, increasing direct ownership by 3% to 15,710 units (SEC Form 4)

CEO Plisinski Michael P covered exercise/tax liability with 12,069 shares and converted options into 19,048 shares, increasing direct ownership by 5% to 157,471 units (SEC Form 4)

VP, General Counsel & Corp Sec Oh Yoon Ah covered exercise/tax liability with 1,391 shares and converted options into 2,720 shares, increasing direct ownership by 10% to 14,343 units (SEC Form 4)

CEO Plisinski Michael P sold $7,671,650 worth of shares (35,000 units at $219.19), decreasing direct ownership by 19% to 150,492 units (SEC Form 4)

CEO Plisinski Michael P sold $6,337,287 worth of shares (30,000 units at $211.24), decreasing direct ownership by 14% to 185,492 units (SEC Form 4)

SVP, Customer Success Vedula Srinivas sold $169,535 worth of shares (827 units at $205.00), decreasing direct ownership by 5% to 15,223 units (SEC Form 4)

CEO Plisinski Michael P sold $4,003,826 worth of shares (20,000 units at $200.19), decreasing direct ownership by 8% to 215,492 units (SEC Form 4)

SEC Form 4 filed by Sr. Vice President & GM, MBU Fiordalice Robert

SEC Form 4 filed by Vice President & GM, IBU Brooks D Mayson

SEC Form 3 filed by new insider Dolev Ido

Chief Financial Officer Slicer Mark sold $176,451 worth of shares (1,100 units at $160.41), decreasing direct ownership by 9% to 10,933 units (SEC Form 4)

General Counsel Oh Yoon Ah covered exercise/tax liability with 1,296 shares, decreasing direct ownership by 9% to 13,014 units (SEC Form 4)

Chief Operating Officer Yaldaei Ramil covered exercise/tax liability with 592 shares, decreasing direct ownership by 6% to 9,148 units (SEC Form 4)

Vice President & GM, IBU Brooks D Mayson covered exercise/tax liability with 224 shares, decreasing direct ownership by 7% to 3,025 units (SEC Form 4)