MKSI insider transactions

SVP & Chief Accounting Officer Mccarthy Michelle M sold $767,270 worth of shares (2,434 units at $315.23) as part of a pre-agreed trading plan, decreasing direct ownership by 100% to 2 units (SEC Form 4)

New insider Donlan Renee Martel claimed ownership of 9,472 shares (SEC Form 3)

EVP, Global Str Mktg & GM, MSD Henry David Philip sold $1,886,583 worth of shares (6,000 units at $314.43), decreasing direct ownership by 37% to 10,422 units (SEC Form 4)

Director Mora Elizabeth sold $95,406 worth of shares (300 units at $318.02) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 19,145 units (SEC Form 4)

Director Donahue Joseph B sold $688,703 worth of shares (2,100 units at $327.95), decreasing direct ownership by 17% to 10,033 units (SEC Form 4)

Director Colella Gerald G sold $6,668,075 worth of shares (20,000 units at $333.40) as part of a pre-agreed trading plan (SEC Form 4)

EVP, Global Str Mktg & GM, MSD Henry David Philip sold $826,250 worth of shares (2,500 units at $330.50) as part of a pre-agreed trading plan, decreasing direct ownership by 13% to 16,341 units (SEC Form 4)

EVP & CFO Mayampurath Ramakumar sold $2,779,379 worth of shares (8,810 units at $315.48) as part of a pre-agreed trading plan, decreasing direct ownership by 100% to 1 units (SEC Form 4)

President & CEO Lee John Tseng-Chung sold $3,154,800 worth of shares (10,000 units at $315.48) as part of a pre-agreed trading plan, decreasing direct ownership by 6% to 144,696 units (SEC Form 4)

Director Cannone Peter Iii sold $409,590 worth of shares (1,350 units at $303.40), decreasing direct ownership by 15% to 7,794 units (SEC Form 4)

Director Moloney Jacqueline F sold $312,197 worth of shares (1,000 units at $312.20), decreasing direct ownership by 10% to 8,775 units (SEC Form 4)

Director Moloney Jacqueline F sold $446,586 worth of shares (1,400 units at $318.99), decreasing direct ownership by 13% to 9,775 units (SEC Form 4)

EVP & GM, VSD Taranto Eric Robert sold $911,328 worth of shares (2,849 units at $319.93), decreasing direct ownership by 18% to 12,596 units (SEC Form 4)

Director Moloney Jacqueline F was granted 782 shares, increasing direct ownership by 8% to 11,175 units (SEC Form 4)

Director Jabre Wissam G was granted 782 shares, increasing direct ownership by 17% to 5,270 units (SEC Form 4)

Director Mora Elizabeth was granted 782 shares, increasing direct ownership by 4% to 19,445 units (SEC Form 4)

EVP, GC & Secretary Burke Kathleen Flaherty sold $1,393,317 worth of shares (4,355 units at $319.94), decreasing direct ownership by 8% to 49,439 units (SEC Form 4)

Director Donahue Joseph B was granted 782 shares, increasing direct ownership by 7% to 12,133 units (SEC Form 4)

Director Cannone Peter Iii was granted 782 shares, increasing direct ownership by 9% to 9,144 units (SEC Form 4)

Director Batra Raj was granted 782 shares, increasing direct ownership by 5% to 16,227 units (SEC Form 4)

Director Colella Gerald G was granted 782 shares, increasing direct ownership by 10% to 8,999 units (SEC Form 4)

SEC Form 4 filed by Williams John Edward

SEC Form 4 filed by Mccarthy Michelle M

Director Moloney Jacqueline F sold $72,705 worth of shares (340 units at $213.77), decreasing direct ownership by 3% to 10,393 units (SEC Form 4)

EVP & GM, VSD Taranto Eric Robert sold $1,007,318 worth of shares (4,568 units at $220.52), decreasing direct ownership by 23% to 15,445 units (SEC Form 4)

Director Mora Elizabeth sold $71,832 worth of shares (300 units at $239.44), decreasing direct ownership by 2% to 18,663 units (SEC Form 4)

EVP & COO Schreiner James Alan sold $1,045,500 worth of shares (4,100 units at $255.00), decreasing direct ownership by 15% to 23,402 units (SEC Form 4)

Director Colella Gerald G sold $5,068,674 worth of shares (20,000 units at $253.43) (SEC Form 4)

Director Cannone Peter Iii sold $322,574 worth of shares (1,250 units at $258.06), decreasing direct ownership by 13% to 8,362 units (SEC Form 4)

EVP & GM, VSD Taranto Eric Robert sold $359,623 worth of shares (1,453 units at $247.55), decreasing direct ownership by 7% to 20,013 units (SEC Form 4)

EVP, Global Str Mktg & GM, MSD Henry David Philip sold $523,120 worth of shares (2,000 units at $261.56), decreasing direct ownership by 10% to 18,841 units (SEC Form 4)

VP & Chief Accounting Officer Mccarthy Michelle M sold $366,503 worth of shares (1,466 units at $250.00), closing all direct ownership in the company (SEC Form 4)

Director Moloney Jacqueline F sold $205,219 worth of shares (829 units at $247.55), decreasing direct ownership by 7% to 10,733 units (SEC Form 4)

EVP & GM, PSD Williams John Edward sold $523,744 worth of shares (2,043 units at $256.41), decreasing direct ownership by 36% to 3,640 units (SEC Form 4)

EVP, GC & Secretary Burke Kathleen Flaherty sold $1,063,500 worth of shares (4,254 units at $250.00), decreasing direct ownership by 7% to 53,794 units (SEC Form 4)

President & CEO Lee John Tseng-Chung sold $7,703,242 worth of shares (30,000 units at $256.77), decreasing direct ownership by 16% to 154,696 units (SEC Form 4)

EVP & GM, VSD Taranto Eric Robert converted options into 6,473 shares and covered exercise/tax liability with 2,712 shares, increasing direct ownership by 21% to 21,465 units (SEC Form 4)

EVP, Global Str Mktg & GM, MSD Henry David Philip covered exercise/tax liability with 4,097 shares and converted options into 9,282 shares, increasing direct ownership by 33% to 20,841 units (SEC Form 4)

EVP & COO Schreiner James Alan covered exercise/tax liability with 4,344 shares and converted options into 9,225 shares, increasing direct ownership by 22% to 27,502 units (SEC Form 4)

EVP & GM, PSD Williams John Edward converted options into 3,238 shares and covered exercise/tax liability with 1,195 shares, increasing direct ownership by 56% to 5,683 units (SEC Form 4)

EVP & CFO Mayampurath Ramakumar converted options into 5,660 shares and covered exercise/tax liability with 2,516 shares, increasing direct ownership by 55% to 8,811 units (SEC Form 4)

EVP, GC & Secretary Burke Kathleen Flaherty converted options into 12,206 shares and covered exercise/tax liability with 5,318 shares, increasing direct ownership by 13% to 58,048 units (SEC Form 4)

President & CEO Lee John Tseng-Chung converted options into 69,889 shares and covered exercise/tax liability with 32,548 shares, increasing direct ownership by 25% to 184,696 units (SEC Form 4)

SEC Form 4 filed by EVP & GM, VSD Taranto Eric Robert

SEC Form 4 filed by EVP, Global Str Mktg & GM, MSD Henry David Philip

SEC Form 4 filed by EVP & COO Schreiner James Alan

SEC Form 4 filed by EVP & GM, PSD Williams John Edward

SEC Form 4 filed by EVP, GC & Secretary Burke Kathleen Flaherty

SEC Form 4 filed by EVP & CFO Mayampurath Ramakumar

SEC Form 4 filed by President & CEO Lee John Tseng-Chung

Director Mora Elizabeth sold $47,643 worth of shares (300 units at $158.81), decreasing direct ownership by 2% to 18,963 units (SEC Form 4)

EVP & CFO Mayampurath Ramakumar converted options into 8,295 shares and covered exercise/tax liability with 2,628 shares (SEC Form 4)

EVP, GC & Secretary Burke Kathleen Flaherty converted options into 777 shares and covered exercise/tax liability with 777 shares (SEC Form 4)

President & CEO Lee John Tseng-Chung converted options into 2,003 shares and covered exercise/tax liability with 2,003 shares (SEC Form 4)

EVP & COO Schreiner James Alan sold $98,601 worth of shares (711 units at $138.68), decreasing direct ownership by 3% to 22,535 units (SEC Form 4)

Director Moloney Jacqueline F sold $36,642 worth of shares (300 units at $122.14), decreasing direct ownership by 3% to 11,562 units (SEC Form 4)

EVP & COO Schreiner James Alan sold $103,912 worth of shares (838 units at $124.00), decreasing direct ownership by 3% to 23,246 units (SEC Form 4)

EVP, Global Str Mktg & GM, MSD Henry David Philip sold $650,000 worth of shares (5,000 units at $130.00), decreasing direct ownership by 24% to 15,571 units (SEC Form 4)

Director Mora Elizabeth sold $29,955 worth of shares (300 units at $99.85), decreasing direct ownership by 2% to 19,263 units (SEC Form 4)

EVP & COO Schreiner James Alan converted options into 2,641 shares and covered exercise/tax liability with 1,249 shares, increasing direct ownership by 6% to 24,084 units (SEC Form 4)