West Pharmaceutical Services WST Insider Ownership

NYSE WST

$370.73 -5.90 (-1.57%)

As of: Sep 30, 2026 · 3:59 PM EDT

Insider Holdings by Owner

471.03K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

0.665%

▲+0.013% pp QoQ

Shares Held by Insiders

471.03K

filed for Sep 2026

▲+1.95% QoQ

Shares Outstanding

70.80Mn

70,800,000 shares

Direct Holdings

471.03K

Indirect: 0

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

Quarter ending 30 Sep, 2026

As of September 29, 2026, West Pharmaceutical Services's top three insider holders are Eric Mark Green (President, Ceo And Board Chair, 175.16K shares), Douglas A Michels (Director, 46.50K shares), Thomas W Hofmann (Director, 44.64K shares).

A detailed ownership breakdown for West Pharmaceutical Services is not available at this time.
Insider holdings in WST account for 65.25% of outstanding stock, totaling 462.00K shares from a 70.80Mn share base, per Business Quant data.
This stake decreased 10.89% over the past quarter for West Pharmaceutical Services, from 518.48K to 462.00K shares.
Among insider personnel at West Pharmaceutical Services, Michel Lagarde (President And Ceo) bought the most shares, adding 51.80K shares in the 90-day window ending September 29, 2026.
On the selling side, Annette F Favorite (Sr. Vp Chief Hr Officer) led at West Pharmaceutical Services with 31.32K shares sold during the same 90-day period ending September 29, 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

2,390 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
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	Acquired M	2,817	$83.47	$235.13K	19,662	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	11,081	$0.00	$0	11,081	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	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	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	Disposed S	2,818	$340.81	$960.40K	16,845	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	4,950	$0.00	$0	4,950	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	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed S	2,500	$340.81	$852.03K	16,845	Direct
08 Sep, 2026	Michel Lagarde	President And Ceo	Acquired A	3,600	$0.00	$0	3,600	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed M	2,817	$0.00	$0	2,818	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed M	2,818	$0.00	$0	0	Direct
08 Sep, 2026	Annette F Favorite	Sr. Vp Chief Hr Officer	Disposed M	2,500	$0.00	$0	7,524	Direct
11 Aug, 2026	Robert W. Mcmahon	Svp Chief Financial Officer	Acquired M	794	—	—	3,775	Direct
11 Aug, 2026	Robert W. Mcmahon	Svp Chief Financial Officer	Disposed F	346	$351.37	$121.40K	3,429	Direct
11 Aug, 2026	Robert W. Mcmahon	Svp Chief Financial Officer	Acquired M	6,355	—	—	9,784	Direct
11 Aug, 2026	Robert W. Mcmahon	Svp Chief Financial Officer	Disposed F	2,764	$351.37	$971.07K	7,021	Direct
11 Aug, 2026	Robert W. Mcmahon	Svp Chief Financial Officer	Disposed M	6,355	$0.00	$0	2,119	Direct

Showing 1 to 20 of 2,390 transactions