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Stock Insider Trading Activity of Burke Kathleen Flaherty
Burke Kathleen Flaherty
Sell
EVP, GC & Secretary
MKSI May 11, 2026
Avg Cost/Share
$319.94
Shares
4,355
Total Value
$1,393,316.93
Owned After
49,439.485
SEC Form 4
Burke Kathleen Flaherty
Sell
EVP, GC & Secretary
MKSI Feb 20, 2026
Avg Cost/Share
$250.00
Shares
4,254
Total Value
$1,063,500.00
Owned After
49,439.485
SEC Form 4
| Insider | Ticker | Relationship | Date | Transaction | Avg Cost | Shares | Total Value | Owned After | SEC Forms |
|---|---|---|---|---|---|---|---|---|---|
| Burke Kathleen Flaherty | MKSI | EVP, GC & Secretary | May 11, 2026 | Sell | $319.94 | 4,355 | $1,393,316.93 | 49,439.485 | |
| Burke Kathleen Flaherty | MKSI | EVP, GC & Secretary | Feb 20, 2026 | Sell | $250.00 | 4,254 | $1,063,500.00 | 49,439.485 |