Insider · CIK 0001775435

Burke Kathleen Flaherty

Reports to the SEC for 1 company · ANDOVER, MA

sec.gov

Transactions

Companies

Filings

CIK

0001775435

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-05-11	MKSIMKS INCS Sale	EVP, GC & Secretary	SSale	−4,355 sh	$319.94	−$1.39M	49,439.485
2026-02-20	MKSIMKS INCS Sale	EVP, GC & Secretary	SSale	−4,254 sh	$250.00	−$1.06M	53,794.485
2026-02-17	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,576 sh	—	—	58,537.283
2026-02-17	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−2,493 sh	—	—	15,128.986
2026-02-17	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+3,450.859 sh	—	—	54,611.008
2026-02-17	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,787.735 sh	—	—	56,398.743
2026-02-17	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−1,576 sh	—	—	19,957.986
2026-02-17	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−2,336 sh	—	—	17,621.986
2026-02-17	MKSIMKS INC · Restricted Stock UnitA Award	EVP, GC & Secretary	AAward	+3,327.755 sh	—	—	27,335.12
2026-02-17	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−562.54 sh	—	—	21,533.986
2026-02-17	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+2,336 sh	—	—	60,873.283
2026-02-17	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+2,493 sh	—	—	63,366.283
2026-02-17	MKSIMKS INCF Tax Payment	EVP, GC & Secretary	FTax Payment	−5,317.798 sh	$260.74	−$1.39M	58,048.485
2026-02-17	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+562.54 sh	—	—	56,961.283
2026-02-17	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−1,787.735 sh	—	—	22,096.526
2026-02-17	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−3,450.859 sh	—	—	23,884.261
2026-02-08	MKSIMKS INC · Restricted Stock UnitA Award	EVP, GC & Secretary	AAward	+7,008.628 sh	—	—	24,007.365
2025-10-31	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−341 sh	—	—	16,998.737
2025-10-31	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+158 sh	—	—	51,232.509
2025-10-31	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+341 sh	—	—	51,851.509
2025-10-31	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−82 sh	—	—	17,483.737
2025-10-31	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−144 sh	—	—	17,339.737
2025-10-31	MKSIMKS INCF Tax Payment	EVP, GC & Secretary	FTax Payment	−777 sh	$143.71	−$112K	51,074.509
2025-10-31	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+144 sh	—	—	51,510.509
2025-10-31	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−158 sh	—	—	17,617.737
2025-10-31	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+52 sh	—	—	51,284.509
2025-10-31	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−52 sh	—	—	17,565.737
2025-10-31	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+82 sh	—	—	51,366.509
2025-02-18	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−588.03 sh	—	—	19,423.737
2025-02-18	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−1,648 sh	—	—	17,775.737
2025-02-18	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−1,645.076 sh	—	—	25,489.767
2025-02-18	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−3,608 sh	—	—	21,881.767
2025-02-18	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−2,286.756 sh	—	—	27,134.843
2025-02-18	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,648 sh	—	—	54,892.422
2025-02-18	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−1,870 sh	—	—	20,011.767
2025-02-18	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,645.076 sh	—	—	47,178.392
2025-02-18	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+3,608 sh	—	—	50,786.392
2025-02-18	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,870 sh	—	—	52,656.392
2025-02-18	MKSIMKS INCF Tax Payment	EVP, GC & Secretary	FTax Payment	−3,970 sh	$103.67	−$412K	50,922.422
2025-02-18	MKSIMKS INC · Restricted Stock UnitA Award	EVP, GC & Secretary	AAward	+7,822.13 sh	—	—	29,421.599
2025-02-18	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+2,286.756 sh	—	—	45,533.316
2025-02-18	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+588.03 sh	—	—	53,244.422
2025-02-10	MKSIMKS INC · Restricted Stock UnitA Award	EVP, GC & Secretary	AAward	+1,765.543 sh	—	—	21,599.469
2024-03-01	MKSIMKS INCS Sale	EVP, GC & Secretary	SSale	−7,411 sh	$122.89	−$911K	42,999.021
2024-02-15	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,869 sh	—	—	55,322.021
2024-02-15	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+3,608 sh	—	—	53,453.021
2024-02-15	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,645 sh	—	—	49,845.021
2024-02-15	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+2,287 sh	—	—	48,200.021
2024-02-15	MKSIMKS INC · Restricted Stock UnitM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	−1,869 sh	—	—	19,833.926
2024-02-15	MKSIMKS INCM Exercise/Conversion	EVP, GC & Secretary	MExercise/Conversion	+1,016.78 sh	—	—	45,913.021

Recent filings

Accepted (ET)
May 124
Burke Kathleen Flaherty0001049502-26-000072
SEC(opens sec.gov)
Feb 234
Burke Kathleen Flaherty0001049502-26-000032
SEC(opens sec.gov)
Feb 184
Burke Kathleen Flaherty0001049502-26-000018
SEC(opens sec.gov)
Feb 94
Burke Kathleen Flaherty0001049502-26-000006
SEC(opens sec.gov)
Nov 44
Burke Kathleen Flaherty0001049502-25-000037
SEC(opens sec.gov)

Companies

MKS INCEVP, GC & SecretaryMKSI

Address

C/O MKS INC. 2 TECH DRIVE

ANDOVER, MA, 01810