West Pharmaceutical Services WST Insider Ownership

NYSE WST

$389.20 +5.29 (+1.38%)

As of: Oct 20, 2026 · 3:59 PM EDT

Insider Holdings by Owner

471.03K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

0.647%

▲+0.013% pp QoQ

Shares Held by Insiders

457.90K

filed for Sep 2026

▲+2.01% QoQ

Shares Outstanding

70.80Mn

70,800,000 shares

Direct Holdings

452.68K

Indirect: 5.22K

Net Shares Traded (QoQ)

+9.03K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 5, 2026

In the last 12 months, insiders at West Pharmaceutical Services made open-market sales of $6.57 million (19.37K shares) and bought no shares on the open market.

A count shows 2 insiders selling WST stock on the open market over the past 12 months and none buying.
Annette F. Favorite (Senior VP & Chief HR Officer) sold the most West Pharmaceutical Services stock on the open market over the past 12 months, $6.3 million (18.48K shares), most recently on September 15, 2026.
Away from the open market, WST insiders received 5.92K shares in stock awards, acquired 33.59K shares through option exercises and conversions and gave up 6.95K shares to cover taxes or exercise prices over the last 12 months.
Per Business Quant data, West Pharmaceutical Services insiders hold 457.9K shares in total based on their latest Form 4 filings, or 0.65% of the 70.8Mn shares outstanding; that total is up 2.01% from 448.87K shares at the end of Q2 2026 and up 8.96% from 420.23K shares at the end of Q3 2025.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 1.14% (5.22K shares) of West Pharmaceutical Services' insider total, with the other 98.86% (452.68K shares) held directly.
WST's insider total is spread across 22 insiders who have filed a Form 4 in the past two years.
West Pharmaceutical Services' three largest insider shareholders, based on their latest Form 4 filings, are Eric Mark Green (President, CEO and Board Chair, 175.42K shares), Douglas A. Michels (Director, 46.5K shares) and Thomas W. Hofmann (Director, 44.64K shares).
Eric Mark Green alone accounts for 38.31% of the shares held by West Pharmaceutical Services insiders.
In the last 12 months, 38 Form 4 filings with transactions in WST stock came from 19 insiders.
The insider holdings and trades above for West Pharmaceutical Services reflect Form 4 filings through October 2, 2026.

Form 4 Holdings

Insiders Holding WST

Insiders 24

Shares held 471.03K

Of outstanding 0.665%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Eric Mark Green	President, Ceo And Board Chair	175,161	175,161	37.2%	19 Feb, 2026
2	Douglas A Michels	Director	46,496	46,496	9.9%	06 May, 2026
3	Thomas W Hofmann	Director	44,637	44,637	9.5%	08 May, 2025
4	Mark A Buthman	Director	44,309	44,309	9.4%	06 May, 2026
5	William F Feehery	Director	32,519	32,519	6.9%	06 May, 2026
6	Annette F Favorite	Sr. Vp Chief Hr Officer	21,818	21,818	4.6%	15 Sep, 2026
7	Goldman Myla Lai	Director	20,435	20,435	4.3%	06 May, 2026
8	David A Montecalvo	Svp, Glob Ops And Supply Chain	13,731	13,731	2.9%	24 Feb, 2022
9	Paolo Pucci	Director	11,854	11,854	2.5%	06 May, 2026
10	Deborah L Keller	Director	11,560	11,560	2.5%	06 May, 2026
11	Bernard Birkett	Sr Vp, Chief Financial Officer	7,520	7,520	1.6%	20 Feb, 2025
12	Robert W. Mcmahon	Svp Chief Financial Officer	7,021	7,021	1.5%	12 Aug, 2026
13	Robert F Friel	Director	5,513	5,513	1.2%	06 May, 2026
14	Cindy Reiss-Clark	Chief Commercial Officer	5,047	5,047	1.1%	20 Feb, 2025
15	Molly Joseph	Director	4,398	4,398	0.9%	06 May, 2026
16	Quintin J Lai	Vp Strat Investor Relations	4,359	4,359	0.9%	22 Feb, 2024
17	Stephen H Lockhart	Director	3,523	3,523	0.7%	06 May, 2026
18	Silji Abraham	Svp, Chief Technology Officer	3,138	3,138	0.7%	31 Oct, 2024
19	Janet Brutschea Haugen	Director	2,373	2,373	0.5%	06 May, 2026
20	Chad Winters	Vp, Chief Accounting Officer	1,523	1,523	0.3%	29 Apr, 2026
21	Kimberly Banks Mackay	Svp, Gc Corporate Secretary	1,512	1,512	0.3%	20 Feb, 2025
22	Charles Witherspoon	Vp Treasurer	1,408	1,408	0.3%	23 Feb, 2026
23	Shane Alden Campbell	Svp, Proprietary Segment	613	613	0.1%	14 May, 2026
24	Rodolphe Jean Poussot	Svp, Strategy Corporate Dev	561	561	0.1%	23 Feb, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

2,400 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
30 Sep, 2026	Janet Brutschea Haugen	Director	Acquired A	44	$370.76	$16.31K	351	Direct
11 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Acquired M	2,500	$89.64	$224.10K	24,318	Direct
11 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed S	2,500	$345.00	$862.50K	21,818	Direct
14 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Acquired M	2,500	$89.64	$224.10K	24,318	Direct
14 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed S	2,500	$355.00	$887.50K	21,818	Direct
15 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Acquired M	2,524	$89.64	$226.25K	24,342	Direct
15 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed S	2,524	$365.00	$921.26K	21,818	Direct
11 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed M	2,500	$0.00	$0	5,024	Direct
14 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed M	2,500	$0.00	$0	2,524	Direct
15 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed M	2,524	$0.00	$0	0	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Acquired M	2,817	$83.47	$235.13K	19,662	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	13,879	$0.00	$0	13,879	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed S	2,817	$340.81	$960.06K	16,845	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	11,081	$0.00	$0	11,081	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	12,088	$0.00	$0	12,088	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Acquired M	2,818	$83.47	$235.22K	19,663	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed S	2,818	$340.81	$960.40K	16,845	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	6,200	$0.00	$0	6,200	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Acquired M	2,500	$89.64	$224.10K	19,345	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	4,950	$0.00	$0	4,950	Direct

Showing 1 to 20 of 2,400 transactions