Mayampurath Ramakumar 4

4 · MKS INC · Filed Feb 18, 2026

AI-generated summary of this filing

Updated Feb 18, 2026

MKS (MKSI) CFO Mayampurath Ramakumar Exercises Options, Receives RSUs

What Happened

Mayampurath Ramakumar, Executive VP & CFO of MKS Inc. (MKSI), reported multiple derivative transactions and an RSU award on Feb 17, 2026. He exercised/converted a total of 5,660.08 derivative shares (2,958.08 and 2,702) and was granted 4,278.543 restricted stock units (RSUs).
To satisfy tax withholding obligations, 2,515.941 shares were withheld at an indicated price of $260.74 per share, yielding $656,006. The filing shows the withholding as a disposition (F) rather than an open-market sale.

Key Details

Transaction date: February 17, 2026 (Form filed Feb 18, 2026 — appears timely).
Exercises/conversions (code M): 2,958.08 shares and 2,702 shares (total 5,660.08) were exercised/converted to common stock.
RSU grant (code A): 4,278.543 RSUs were awarded (each RSU = right to one share; see footnote F1).
Tax withholding (code F): 2,515.941 shares withheld at $260.74 per share, proceeds $656,006; withholding was done by the company and is not a discretionary open-market sale (footnote F2).
Shares owned after the transactions: not disclosed in the provided filing summary.
Vesting notes: RSUs have multi-year vesting/ performance conditions — some vest in three equal annual installments beginning Feb 15, 2026 or Feb 15, 2027, with performance determination on Feb 8, 2026 for certain RSUs (footnotes F3–F5).

Context

This was largely an exercise/conversion and an RSU grant event with company withholding for taxes — not an open-market sale by the insider. Withholding to cover tax obligations is a routine administrative step and does not necessarily signal a change in insider sentiment.
For retail investors: awards and exercises are common ways insiders receive equity. Purchases tend to be more indicative of bullish conviction; this filing documents award/vesting activity and tax-related withholding.

Form 4

Period: 2026-02-17

EVP & CFO

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-02-17+2,958.08→ 8,625.08 total
Exercise/Conversion
Common Stock
[F1]
2026-02-17+2,702→ 11,327.08 total
Tax Payment
Common Stock
[F2]
2026-02-17$260.74/sh−2,515.941$656,006→ 8,811.139 total
Award
Restricted Stock Unit
[F1][F3]
2026-02-17+4,278.543→ 29,558.533 total
→ Common Stock (4,278.543 underlying)
Exercise/Conversion
Restricted Stock Unit
[F1][F4]
2026-02-17−2,958.08→ 26,600.453 total
→ Common Stock (2,958.08 underlying)
Exercise/Conversion
Restricted Stock Unit
[F1][F5]
2026-02-17−2,702→ 23,898.453 total
→ Common Stock (2,702 underlying)

Footnotes (5)

[F1]Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc.
[F2]These shares were withheld by MKS Inc. to satisfy the tax withholding obligations triggered by the vesting of RSUs and do not represent a discretionary trade by the reporting person.
[F3]These RSUs vest in three equal annual installments commencing on February 15, 2027, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.
[F4]These RSUs were subject to performance criteria, the achievement of which was determined on February 8, 2026, and thereafter vest in three equal annual installments beginning on February 15, 2026, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.
[F5]These RSUs vest in three equal annual installments commencing on February 15, 2026, provided that if, in any vesting year, February 15th is not a business day, such vesting shall occur on the next business day.

Signature

/s/ M. Kathryn Rickards, attorney-in-fact|2026-02-18

1 file