West Pharmaceutical (NYSE: WST) CFO converts RSUs, withholds tax shares

Rhea-AI Filing Summary

West Pharmaceutical Services SVP & CFO Robert W. McMahon reported equity award activity on February 11, 2026. He converted 4,230.525 restricted stock units into the same number of common shares at an exercise price of $0.

To cover tax obligations, 1,250.034 common shares were withheld at $246.16 per share, leaving 2,980.491 common shares held directly after the transaction. He also reported 8,462.052 restricted stock units remaining outstanding following these events.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McMahon Robert W.

(Last) (First) (Middle)

530 HERMAN O. WEST DRIVE

(Street)

EXTON PA 19341

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
WEST PHARMACEUTICAL SERVICES INC [ WST ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/11/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/11/2026		M		4,230.525	A	(1)	4,230.525	D
Common Stock	02/11/2026		F		1,250.034	D	$246.16	2,980.491	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Rst. Stock Unit	(1)	02/11/2026		M			4,230.525	(2)	(2)	Common Stock	4,230.525	$0	8,462.052	D

Explanation of Responses:

1. Restricted stock units convert into common stock on a one-for-one basis.

2. On August 11, 2025, the reporting person was granted 12,670 restricted stock units, vesting in three installments - 4,223 shares (plus dividend equivalents) to vest six months from the grant date, 6,335 shares (plus dividend equivalents) to vest 12 months from the grant date and 2,112 shares (plus dividend equivalents) to vest 24 months from the grant date.

	/s/ Louis Lalli, as an agent for Robert W. McMahon	02/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did WST CFO Robert McMahon report on February 11, 2026?

Robert McMahon reported converting 4,230.525 restricted stock units into common stock on February 11, 2026. These units converted one-for-one into shares, reflecting the scheduled vesting and exercise of previously granted equity compensation awards.

How many WST shares were withheld for taxes in Robert McMahon’s Form 4 filing?

The filing shows 1,250.034 WST common shares were disposed of to satisfy tax withholding at a price of $246.16 per share. This tax-related share withholding reduced his directly held common stock balance after the restricted stock unit conversion.

How many WST common shares does Robert McMahon hold directly after this Form 4 transaction?

After the reported transactions, Robert McMahon directly holds 2,980.491 WST common shares. This figure reflects both the conversion of restricted stock units into common stock and the subsequent share withholding to cover associated tax obligations.

What derivative holdings did WST CFO Robert McMahon report after the transaction?

He reported holding 8,462.052 restricted stock units as derivative securities following the transaction. These units represent additional potential future common shares, as each restricted stock unit converts into one share of WST common stock upon vesting.

When were the restricted stock units in McMahon’s WST Form 4 originally granted and how do they vest?

The filing notes a grant of 12,670 restricted stock units on August 11, 2025. They vest in three installments: 4,223 units after six months, 6,335 after twelve months, and 2,112 after twenty-four months, each tranche including associated dividend equivalents.

What do the transaction codes M and F indicate in WST CFO Robert McMahon’s Form 4?

Code M indicates the exercise or conversion of a derivative security, here restricted stock units converting into common shares. Code F indicates shares disposed of to pay tax liabilities, showing that part of the new shares were withheld to cover withholding taxes.