Mark A. Buthman - 04 May 2026 Form 4 Insider Report for WEST PHARMACEUTICAL SERVICES INC (WST)

Reporting relationship: Director
Issuer ticker: WST
Reported as of: 04 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 May 2026, 17:18:13 UTC
Prior SEC filing: 12 May 2025
Next SEC filing: 08 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Louis Lalli, as an agent for Mark A. Buthman

Key filing fact

Mark A. Buthman filed Form 4 for WEST PHARMACEUTICAL SERVICES INC (WST) on 06 May 2026.

Key facts

This page summarizes Mark A. Buthman's Form 4 filing for WEST PHARMACEUTICAL SERVICES INC (WST).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 06 May 2026, 17:18.

Change

Previous filing in this sequence was filed on 12 May 2025.
Current net transaction value: $0.

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 0001223783 Primary reporting owner

BUTHMAN MARK A

Relationship: Director
Address: 530 HERMAN O. WEST DRIVE, EXTON
Signature: /s/ Louis Lalli, as an agent for Mark A. Buthman
Signature date: 06 May 2026

Reported non-derivative transactions

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

WST transaction

Common Stock

Award

Transaction value
Shares: +791
Change %: +1.8%
Price: $0.000000^*
Shares after: 44,309
Date: 04 May 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

These shares of restricted stock units will vest in full on the date of the next annual shareholder meeting.

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .