COLELLA GERALD G 4
4 · MKS INC · Filed May 28, 2026
Research Summary
AI-generated summary of this filing
MKS Inc (MKSI) Director Gerald G. Colella Sells Shares
What Happened
- Gerald G. Colella, a director of MKS Inc. (MKSI), reported multiple open‑market sales on May 27, 2026 totaling 20,000 shares for aggregate proceeds of approximately $6,668,076. Reported lots: 464 @ $330.38 ($153,298); 8,210 @ $331.45 ($2,721,195); 4,876 @ $332.04 ($1,619,034); 1,811 @ $335.46 ($607,514); 1,626 @ $336.54 ($547,219); 213 @ $337.05 ($71,792); and 2,800 @ $338.58 ($948,024). These are sales (not purchases).
Key Details
- Transaction date: May 27, 2026 (Period of Report: 2026-05-27); filing date: May 28, 2026 (timely).
- Price information: Filing reports weighted‑average prices for each lot; footnotes indicate many trades were executed in multiple fills at price ranges (examples across lots: ~$329.90–$337.73).
- Plan/authorization: Filing includes a footnote that the trades were effected pursuant to a Rule 10b5‑1 trading plan adopted Feb 24, 2026.
- Shares owned after the transaction: not stated in this Form 4 filing.
- Filing timeliness: filed the next day (no late‑filing flag indicated).
Context
- These are pre‑arranged open‑market sales under a 10b5‑1 plan, which means the trades were scheduled in advance and are generally considered routine; sales do not necessarily reflect the director’s current view of the company. Purchases are typically more informative about insider sentiment; this filing documents realized dispositions.
Insider Transaction Report
Form 4
MKS INCMKSI
COLELLA GERALD G
Director
Transactions
- Sale
Common Stock
[F1][F2]2026-05-27$330.38/sh−464$153,298→ 39,553 total(indirect: By Trust) - Sale
Common Stock
[F1][F3]2026-05-27$331.45/sh−8,210$2,721,195→ 31,343 total(indirect: By Trust) - Sale
Common Stock
[F1][F4]2026-05-27$332.04/sh−4,876$1,619,034→ 26,467 total(indirect: By Trust) - Sale
Common Stock
[F1][F5]2026-05-27$335.46/sh−1,811$607,514→ 24,656 total(indirect: By Trust) - Sale
Common Stock
[F1][F6]2026-05-27$336.54/sh−1,626$547,219→ 23,030 total(indirect: By Trust) - Sale
Common Stock
[F1][F7]2026-05-27$337.05/sh−213$71,792→ 22,817 total(indirect: By Trust) - Sale
Common Stock
[F1]2026-05-27$338.58/sh−2,800$948,024→ 20,017 total(indirect: By Trust)
Holdings
- 8,998.886
Common Stock
Footnotes (7)
- [F1]This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 24, 2026.
- [F2]This transaction was executed in multiple trades at prices ranging from $329.90 to $330.90. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
- [F3]This transaction was executed in multiple trades at prices ranging from $330.95 to $331.90. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
- [F4]This transaction was executed in multiple trades at prices ranging from $331.98 to $332.44. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
- [F5]This transaction was executed in multiple trades at prices ranging from $334.60 to $335.55. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
- [F6]his transaction was executed in multiple trades at prices ranging from $335.82 to $336.82. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
- [F7]This transaction was executed in multiple trades at prices ranging from $337.00 to $337.73. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
Signature
/s/ M. Kathryn Rickards, attorney-in-fact|2026-05-28