David Philip Henry - 01 Jun 2026 Form 4 Insider Report for MKS INC (MKSI)

Reporting relationship: EVP, Global Str Mktg & GM, MSD
Issuer ticker: MKSI
Reported as of: 01 Jun 2026
Net transaction value: -$1,886,583
SEC form: 4
Accepted by SEC: 02 Jun 2026, 15:13:26 UTC
Prior SEC filing: 27 May 2026
Source filing: View source filing
Reporting owner signature: /s/ M. Kathryn Rickards, attorney-in-fact

Key filing fact

David Philip Henry filed Form 4 for MKS INC (MKSI) on 02 Jun 2026.

Key facts

This page summarizes David Philip Henry's Form 4 filing for MKS INC (MKSI).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 02 Jun 2026, 15:13.

Change

Previous filing in this sequence was filed on 27 May 2026.
Current net transaction value: -$1,886,583.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001842459 Primary reporting owner

Henry David Philip

Relationship: EVP, Global Str Mktg & GM, MSD
Address: C/O MKS INC., 2 TECH DRIVE, ANDOVER
Signature: /s/ M. Kathryn Rickards, attorney-in-fact
Signature date: 02 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MKSI transaction

Common Stock

Sale

Transaction value: $1,886,583
Shares: -6,000
Change %: -37%
Price: $314.43
Shares after: 10,422
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

This transaction was executed in multiple trades at prices ranging from $314.2425 to $314.955. 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.