Burke Kathleen Flaherty
SEC insider (Form 3/4/5 filer). CIK 0001775435. EVP, GC & Secretary at MKS INC (MKSI). 26 reported Form 4/5 transactions since Sep 2024; latest on May 11, 2026. Located in ANDOVER, MA.
Companies Burke Kathleen Flaherty has filed insider reports for
- MKS INC (MKSI): Officer, EVP, GC & Secretary
Burke Kathleen Flaherty
CIK: 0001775435
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)2 (7.7%)
Position reduction
Option Exercises (M)17 (65.4%)
Derivative conversions
Awards (A)4 (15.4%)
Compensation grants
Other (G, F, J, C, D, …)3 (11.5%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MKSI
MKS INC
Officer
Discretionary Trading P&L
Holdings
Transaction History (26 total)
- May 11, 2026MKSI
MKS INC
SaleDirect4.4K shares at avg. $319.94$1.4M - Feb 20, 2026MKSI
MKS INC
SaleDirect4.3K shares at avg. $250.00$1.1M - Feb 17, 2026MKSI
MKS INC
Tax PaymentDirect5.3K shares at avg. $260.74$1.4M - Feb 17, 2026MKSI
MKS INC
ExerciseDirect1.6K shares- - Feb 17, 2026MKSI
MKS INC
ExerciseDirect1.8K shares- - Feb 17, 2026MKSI
MKS INC
ExerciseDirect2.5K shares- - Feb 17, 2026MKSI
MKS INC
ExerciseDirect2.3K shares- - Feb 17, 2026MKSI
MKS INC
ExerciseDirect3.5K shares- - Feb 17, 2026MKSI
MKS INC
ExerciseDirect563 shares- - Feb 17, 2026MKSI
MKS INC
AwardDirectRestricted Stock Unit
3.3K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| May 11, 2026 | MKSI MKS INC | Sale | 4,355 | $319.94 | $1,393,317 | Direct |
| Feb 20, 2026 | MKSI MKS INC | Sale | 4,254 | $250.00 | $1,063,500 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Tax Payment | 5,318 | $260.74 | $1,386,563 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise | 1,576 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise | 1,788 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise | 2,493 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise | 2,336 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise | 3,451 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise | 563 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Award Restricted Stock Unit | 3,328 | - | - | Direct |
1-10 of 26 transactions