Comparable stake leader
BlackRock, Inc.
SEC ownership of WEST PHARMACEUTICAL SERVICES INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000105770.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- WST on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000105770
- Issuer location
- Exton, PA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of WEST PHARMACEUTICAL SERVICES INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
13F
13D/G
3/4/5
Lead comparable stake: 8.4%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 8.4%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
8.4%
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.7%
FMR LLC
5%
Douglas A. Michels
0.07%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
8.4%
from 13D/G
|
$2,387,990,373
6,651,784 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
7.5%
from 13D/G
|
$1,656,115,106
4,613,134 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.7%
from 13D/G
|
$1,441,659,994
4,015,766 shares
|
— | 30 Jun 2026 |
| FMR LLC |
13F
13D/G
Company
|
5%
from 13D/G
|
$1,283,358,871
3,574,816 shares
|
— | 30 Jun 2026 |
| Douglas A. Michels |
3/4/5
Director
|
0.07%
|
$11,653,644
46,496 shares
|
— | 04 May 2026 |
| Thomas W. Hofmann |
3/4/5
Director
|
0.06%
|
$8,993,040
44,637 shares
|
— | 06 May 2025 |
| Mark A. Buthman |
3/4/5
Director
|
0.06%
|
$11,105,494
44,309 shares
|
— | 04 May 2026 |
| William F. Feehery |
3/4/5
Director
|
0.05%
|
$8,150,648
32,519 shares
|
— | 04 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$1,129,153.
Buys
$0
Insiders: 0
Sells
$1,129,153
Insiders: 2
Net
-$1,129,153
Shares: -3,713
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 3,713
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 3,713 | $0 | $1,129,153 | -$1,129,153 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 26 reporting-owner rows connected to WEST PHARMACEUTICAL SERVICES INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
26
Largest Forms 3/4/5 holder
Eric M. Green
Net 12M change
-$1,129,152
Latest report
11 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Eric M. Green | President, CEO and Board Chair, Director | $49,959,307 | Mixed | 01 Mar 2026 | ||
| ZENNER PATRICK J | Director | $16,283,156 | Mixed | 31 Mar 2022 | ||
| Douglas A. Michels | Director | $11,653,644 | Mixed | 04 May 2026 | ||
| Mark A. Buthman | Director | $11,105,494 | Mixed | 04 May 2026 | ||
| Thomas W. Hofmann | Director | $8,993,040 | Mixed | 06 May 2025 | ||
| William F. Feehery | Director | $8,150,648 | Mixed | 04 May 2026 | ||
| Annette F. Favorite | Sr. VP & Chief HR Officer | $6,987,347 | -$859,753 | -11% | Mixed | 27 Apr 2026 |
| David A. Montecalvo | SVP, Glob Ops and Supply Chain | $5,830,109 | Mixed | 22 Feb 2022 | ||
| Goldman Myla Lai | Director | $5,121,724 | Mixed | 04 May 2026 | ||
| Robert W. McMahon | SVP & Chief Financial Officer | $4,235,596 | Mixed | 11 Aug 2026 | ||
| Bernard Birkett | Sr VP, Chief Financial Officer | $3,535,167 | Mixed | 18 Feb 2025 | ||
| Paolo Pucci | Director | $2,971,161 | Mixed | 04 May 2026 | ||
| Deborah L. Keller | Director | $2,897,518 | Mixed | 04 May 2026 | ||
| Quintin J. Lai | VP Strat & Investor Relations | $2,029,612 | Mixed | 20 Feb 2024 | ||
| Cindy Reiss-Clark | Chief Commercial Officer | $1,628,180 | Mixed | 18 Feb 2025 | ||
| Robert F. Friel | Director | $1,381,770 | Mixed | 04 May 2026 | ||
| Molly Joseph | Director | $1,102,361 | Mixed | 04 May 2026 | ||
| Silji Abraham | SVP, Chief Technology Officer | $999,186 | Mixed | 29 Oct 2024 | ||
| Stephen H. Lockhart. | Director | $883,070 | Mixed | 04 May 2026 | ||
| Kimberly Banks MacKay | SVP, GC & Corporate Secretary | $882,212 | Mixed | 18 Feb 2025 |
Recent insider transactions for WEST PHARMACEUTICAL SERVICES INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Robert W. McMahon | WST | Common Stock | Tax liability | -47.6% | -3,109 | 3,429 | 11 Aug 2026 | Direct | ||
| Robert W. McMahon | WST | Common Stock | Options Exercise | 271.3% | 7,149 | 9,784 | 11 Aug 2026 | Direct | ||
| Robert W. McMahon | WST | Rst. Stock Unit | Options Exercise | -77.1% | -7,149 | 2,119 | 11 Aug 2026 | Direct | ||
| Janet Brutschea Haugen | WST | Phantom Stock Unit | Award | 17.6% | 46 | 307 | 30 Jun 2026 | Direct | ||
| Shane Alden Campbell | WST | Common Stock | Tax liability | -44.4% | -219 | 274 | 12 May 2026 | Direct | ||
| Shane Alden Campbell | WST | Common Stock | Options Exercise | 770 | 748 | 12 May 2026 | Direct | |||
| Shane Alden Campbell | WST | Rst. Stock Unit | Options Exercise | -46.5% | -770 | 886 | 12 May 2026 | Direct | ||
| Paolo Pucci | WST | Common Stock | Award | 7.15% | 791 | 11,854 | 04 May 2026 | Direct | ||
| Douglas A. Michels | WST | Common Stock | Award | 1.73% | 791 | 46,496 | 04 May 2026 | Direct | ||
| Stephen H. Lockhart | WST | Common Stock | Award | 29% | 791 | 3,523 | 04 May 2026 | Direct | ||
| Myla Lai Goldman | WST | Common Stock | Award | 4.03% | 791 | 20,435 | 04 May 2026 | Direct | ||
| Deborah L. Keller | WST | Common Stock | Award | 7.34% | 791 | 11,560 | 04 May 2026 | Direct | ||
| Molly Joseph | WST | Common Stock | Award | 21.9% | 791 | 4,398 | 04 May 2026 | Direct | ||
| Janet B. Haugen | WST | Common Stock | Award | 50% | 791 | 2,373 | 04 May 2026 | Direct | ||
| Robert F. Friel | WST | Common Stock | Award | 16.8% | 791 | 5,513 | 04 May 2026 | Direct | ||
| William F. Feehery | WST | Common Stock | Award | 2.49% | 791 | 32,519 | 04 May 2026 | Direct | ||
| Mark A. Buthman | WST | Common Stock | Award | 1.82% | 791 | 44,309 | 04 May 2026 | Direct | ||
| Annette F. Favorite | WST | Common Stock | Sale | -14.3% | $859,753 | $305.20 | -2,817 | 16,828 | 27 Apr 2026 | Direct |
| Annette F. Favorite | WST | Common Stock | Options Exercise | 16.7% | 2,817 | 19,645 | 27 Apr 2026 | Direct | ||
| Annette F. Favorite | WST | Stock Options (Right to Buy) | Options Exercise | -33.3% | -2,817 | 5,635 | 27 Apr 2026 | Direct | ||
| Chad Winters | WST | Common Stock | Sale | -37% | $269,399 | $300.67 | -896 | 1,523 | 27 Apr 2026 | Direct |
| Chad Winters | WST | Common Stock | Options Exercise | 58.8% | 896 | 2,419 | 27 Apr 2026 | Direct | ||
| Chad Winters | WST | Stock Options (Right to Buy) | Options Exercise | -100% | -896 | 0 | 27 Apr 2026 | Direct | ||
| Janet Brutschea Haugen | WST | Phantom Stock Unit | Award | 24.9% | 52 | 260 | 31 Mar 2026 | Direct | ||
| Norman D. Finch Jr. | WST | Stock Option (Right to Buy) | Award | 3,057 | 3,057 | 01 Mar 2026 | Direct | |||
| Norman D. Finch Jr. | WST | Rst. Stock Unit | Award | 1,285 | 1,285 | 01 Mar 2026 | Direct | |||
| Eric Mark Green | WST | Stock Option (Right to Buy) | Award | 16,630 | 16,630 | 01 Mar 2026 | Direct | |||
| Eric Mark Green | WST | Rst. Stock Unit | Award | 6,986 | 6,986 | 01 Mar 2026 | Direct | |||
| Annette F. Favorite | WST | Stock Option (Right to Buy) | Award | 1,712 | 1,712 | 01 Mar 2026 | Direct | |||
| Annette F. Favorite | WST | Rst. Stock Unit | Award | 720 | 720 | 01 Mar 2026 | Direct | |||
| Shane A. Campbell | WST | Stock Option (Right to Buy) | Award | 2,691 | 2,691 | 01 Mar 2026 | Direct | |||
| Shane A. Campbell | WST | Rst. Stock Unit | Award | 1,131 | 1,131 | 01 Mar 2026 | Direct | |||
| Robert W. McMahon | WST | Stock Option (Right to Buy) | Award | 7,337 | 7,337 | 01 Mar 2026 | Direct | |||
| Robert W. McMahon | WST | Rst. Stock Unit | Award | 3,082 | 3,082 | 01 Mar 2026 | Direct | |||
| Rodolphe J. Poussot | WST | Stock Option (Right to Buy) | Award | 1,040 | 1,040 | 01 Mar 2026 | Direct | |||
| Rodolphe J. Poussot | WST | Rst. Stock Unit | Award | 437 | 437 | 01 Mar 2026 | Direct | |||
| Chad Winters | WST | Stock Option (Right to Buy) | Award | 808 | 808 | 01 Mar 2026 | Direct | |||
| Chad Winters | WST | Rst. Stock Unit | Award | 340 | 340 | 01 Mar 2026 | Direct | |||
| Rodolphe J. Poussot | WST | Common Stock | Tax liability | -18.8% | -130 | 561 | 20 Feb 2026 | Direct | ||
| Rodolphe J. Poussot | WST | Common Stock | Options Exercise | 124.7% | 383 | 691 | 20 Feb 2026 | Direct | ||
| Rodolphe J. Poussot | WST | Rst. Stock Unit | Options Exercise | -50% | -383 | 383 | 20 Feb 2026 | Direct | ||
| Charles Witherspoon | WST | Common Stock | Tax liability | -1.54% | -22.07 | 1,408 | 20 Feb 2026 | Direct | ||
| Charles Witherspoon | WST | Common Stock | Options Exercise | 4.4% | 60.22 | 1,430 | 20 Feb 2026 | Direct | ||
| Charles Witherspoon | WST | Rst. Stock Unit | Options Exercise | -25.3% | -60.22 | 178 | 20 Feb 2026 | Direct | ||
| Chad Winters | WST | Common Stock | Tax liability | -1.94% | -30.18 | 1,523 | 20 Feb 2026 | Direct | ||
| Chad Winters | WST | Common Stock | Options Exercise | 6.1% | 89.33 | 1,553 | 20 Feb 2026 | Direct | ||
| Chad Winters | WST | Rst. Stock Unit | Options Exercise | -25% | -89.33 | 268 | 20 Feb 2026 | Direct | ||
| Rodolphe J. Poussot | WST | Common Stock | Tax liability | -8.3% | -27.81 | 307 | 18 Feb 2026 | Direct | ||
| Rodolphe J. Poussot | WST | Common Stock | Options Exercise | 32.5% | 82.3 | 335 | 18 Feb 2026 | Direct | ||
| Rodolphe J. Poussot | WST | Rst. Stock Unit | Options Exercise | -24.9% | -82.3 | 248 | 18 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.