West Pharmaceutical HR chief sells 7,524 shares

WEST PHARMACEUTICAL SERVICES INC (WST) reported that Sr.

Rhea-AI Filing Summary

WEST PHARMACEUTICAL SERVICES INC (WST) reported that Sr. VP & Chief HR Officer Annette F. Favorite exercised employee stock options and sold the resulting common shares in mid-September 2026 under a Rule 10b5-1 trading plan. She exercised options for 7,524 shares at an exercise price of $89.64 per share, then sold 7,524 common shares in three transactions at prices between $345 and $365 per share. The options exercised were part of an award granted on February 20, 2018 that vested annually beginning February 20, 2019.

Insider Trade Summary 10b5-1

Exercise and Sale: 7,524 shares ($2.00M approx. pre-tax spread)

Exercise and Sale 9 txns

Insider Favorite Annette F

Role Sr. VP & Chief HR Officer

Sold 7,524 shs ($2.67M)

Approx. gross sale proceeds $2.67M

Approx. exercise cost $674K

Approx. pre-tax spread $2.00M

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F1	2,524	$0.00	$0.00
Exercise	Common Stock	2,524	$89.64	$226K
Sale	Common Stock	2,524	$365.00	$921K
Exercise	Stock Option (Right to Buy) F1	2,500	$0.00	$0.00
Exercise	Common Stock	2,500	$89.64	$224K
Sale	Common Stock	2,500	$355.00	$888K
Exercise	Stock Option (Right to Buy) F1	2,500	$0.00	$0.00
Exercise	Common Stock	2,500	$89.64	$224K
Sale	Common Stock	2,500	$345.00	$863K

Holdings After Transaction: Stock Option (Right to Buy) — 0 contracts (Direct); Common Stock — 21,817.8098 shares (Direct)

Footnotes (1)

1. F1. This award granted on February 20, 2018 vested in four equal annual installments beginning on February 20, 2019.

Key Figures

Shares sold: 7,524 shares Shares exercised: 7,524 shares Option exercise price: $89.64 per share +5 more

8 metrics

Shares sold 7,524 shares Total WST common shares sold across three transactions in September 2026

Shares exercised 7,524 shares Total option shares of WST common stock exercised via code M transactions

Option exercise price $89.64 per share Exercise price for the stock options granted on February 20, 2018

Sale price on September 11, 2026 $345.00 per share Sale of 2,500 WST common shares

Sale price on September 14, 2026 $355.00 per share Sale of 2,500 WST common shares

Sale price on September 15, 2026 $365.00 per share Sale of 2,524 WST common shares

Option expiration date February 20, 2028 Expiration for the stock option award exercised in these transactions

Net shares sold 7,524 shares Net-sell direction reported in transaction summary

Key Terms

Stock Option (Right to Buy), derivative security, Rule 10b5-1 trading plan

3 terms

Stock Option (Right to Buy) financial

"The reporting person held a Stock Option (Right to Buy) with an exercise price"

derivative security financial

"Code M transactions reflect the exercise or conversion of a derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Rule 10b5-1 trading plan regulatory

"Transactions were reported as made under a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did WST report for Annette F. Favorite in this Form 4?

Annette F. Favorite exercised stock options for 7,524 shares of WEST PHARMACEUTICAL SERVICES INC and sold 7,524 common shares in related transactions on September 11, 14, and 15, 2026, according to the Form 4.

At what prices were the WST shares sold in these insider transactions?

The WST common shares were sold at per-share prices of $345 on September 11, $355 on September 14, and $365 on September 15, 2026, as disclosed in the Form 4.

What was the stock option exercise price in the WST Form 4 transactions?

The stock options exercised by Annette F. Favorite had an exercise price of $89.64 per share, based on an award originally granted on February 20, 2018 and later exercised in three tranches.

Were the WST insider transactions made under a Rule 10b5-1 trading plan?

Yes. The filing indicates that the reported transactions by Annette F. Favorite were made under a Rule 10b5-1 trading plan, meaning they were executed pursuant to a pre-arranged trading arrangement.

How many WST shares did the insider sell in total in September 2026?

Across the three reported sale transactions, Annette F. Favorite sold a total of 7,524 shares of WEST PHARMACEUTICAL SERVICES INC common stock, matching the number of option shares exercised.

What is the vesting history of the WST options exercised in this Form 4?

The options exercised were from an award granted on February 20, 2018 that vested in four equal annual installments beginning on February 20, 2019, according to the footnote in the Form 4.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/15/2026 - 04:38 PM Accepted by SEC EDGAR 09/15/2026 - 04:37 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

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^*

Favorite Annette F

(Last) (First) (Middle)

530 HERMAN O. WEST DRIVE

(Street)

EXTON PENNSYLVANIA 19341

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Sr. VP & Chief HR Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/11/2026

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

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

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

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	09/11/2026		M		2,500	A	$89.64	24,317.8098	D
Common Stock	09/11/2026		S		2,500	D	$345	21,817.8098	D
Common Stock	09/14/2026		M		2,500	A	$89.64	24,317.8098	D
Common Stock	09/14/2026		S		2,500	D	$355	21,817.8098	D
Common Stock	09/15/2026		M		2,524	A	$89.64	24,341.8098	D
Common Stock	09/15/2026		S		2,524	D	$365	21,817.8098	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
Stock Option (Right to Buy)	$89.64	09/11/2026		M			2,500	(1)	02/20/2028	Common Stock	2,500	$0	5,024	D
Stock Option (Right to Buy)	$89.64	09/14/2026		M			2,500	(1)	02/20/2028	Common Stock	2,500	$0	2,524	D
Stock Option (Right to Buy)	$89.64	09/15/2026		M			2,524	(1)	02/20/2028	Common Stock	2,524	$0	0	D

Explanation of Responses:

1. This award granted on February 20, 2018 vested in four equal annual installments beginning on February 20, 2019.

Remarks:

	/s/ Louis Lalli, as an agent for Annette Favorite	09/15/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)