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| Keyboard |
| MKS Instruments Inc | |
|---|---|
| Ticker | MKSI |
| CIK # | 0001049502 |
| CUSIP | 55306N104 |
| Sector | Life Sciences - Industrial Instruments For Measurement, Display, And Control |
| Address | 2 Tech Drive Suite 201, Andover, MA 01810 |
| Source | [EDGAR] |
| CIK | Filing | 2011 - 2026 |
|---|---|---|
| [0001049502] | 10-K | |
| [0001049502] | 10-Q | |
| [0001049502] | 3 | |
| [0001049502] | 4 | |
| [0001049502] | 5 | |
| [0001049502] | 8-K | |
| [0001049502] | SC 13G |
| Insider Transaction (Form 3/4/5) | Date | Action | Shares | Price | Value ($) |
|---|---|---|---|---|---|
|
Moloney Jacqueline F
Common Stock
|
2026-03-12 | Sell | 340.11 | $213.77 | 72,705 |
|
Taranto Eric Robert
Common Stock
|
2026-03-06 | Sell | 4,567.88 | $220.52 | 1,007,309 |
|
Mora Elizabeth
Common Stock
|
2026-03-02 | Sell | 300 | $239.44 | 71,832 |
|
Schreiner James Alan
Common Stock
|
2026-02-24 | Sell | 4,100 | $255.00 | 1,045,500 |
|
Colella Gerald G
Common Stock
|
2026-02-24 | Sell | 10,000 | $253.97 | 2,539,700 |
|
Lee John Tseng-Chung
Common Stock
|
2026-02-20 | Sell | 12,812 | $256.93 | 3,291,787 |
|
McCarthy Michelle M
Common Stock
|
2026-02-20 | Sell | 650 | $249.57 | 162,220 |
|
McCarthy Michelle M
Common Stock
|
2026-02-20 | Sell | 816 | $250.35 | 204,286 |
|
Lee John Tseng-Chung
Common Stock
|
2026-02-20 | Sell | 1,988 | $257.81 | 512,526 |
|
Williams John Edward
Common Stock
|
2026-02-20 | Sell | 2,042.63 | $256.41 | 523,751 |
|
Moloney Jacqueline F
Common Stock
|
2026-02-20 | Sell | 829 | $247.55 | 205,219 |
|
Lee John Tseng-Chung
Common Stock
|
2026-02-20 | Sell | 13,310 | $256.05 | 3,408,026 |
|
Taranto Eric Robert
Common Stock
|
2026-02-20 | Sell | 1,452.73 | $247.55 | 359,623 |
|
Burke Kathleen Flaherty
Common Stock
|
2026-02-20 | Sell | 4,254 | $250.00 | 1,063,500 |
|
Cannone Peter III
Common Stock
|
2026-02-20 | Sell | 1,250 | $258.06 | 322,575 |
|
Henry David Philip
Common Stock
|
2026-02-20 | Sell | 2,000 | $261.56 | 523,120 |
|
Colella Gerald G
Common Stock
|
2026-02-20 | Sell | 10,000 | $252.90 | 2,529,000 |
|
Lee John Tseng-Chung
Common Stock
|
2026-02-20 | Sell | 1,890 | $259.70 | 490,833 |
|
Henry David Philip
Common Stock
|
2026-02-17 | Option exercise | 1,840.64 | ||
|
Burke Kathleen Flaherty
Common Stock
|
2026-02-17 | Option exercise | 562.54 | ||
| showing 20 of 200 most recent transactions | |||||
| 13F Ownership Over Time | Holders | Shares Held |
|---|---|---|
| 2026-03-31 | 618 | 66,463,100 |
| 2025-12-31 | 517 | 68,687,243 |
| 2025-09-30 | 439 | 69,609,945 |
| 2025-06-30 | 399 | 71,841,825 |
| 2025-03-31 | 402 | 68,614,732 |
| 2024-12-31 | 419 | 67,594,548 |
| 2024-09-30 | 411 | 65,123,948 |
| 2024-06-30 | 398 | 64,017,345 |
| 2024-03-31 | 349 | 63,408,370 |
| 2023-12-31 | 331 | 59,824,610 |
| 2023-09-30 | 322 | 61,424,530 |
| 2023-06-30 | 322 | 63,397,357 |