SEC Form 4
West Pharmaceutical Services, Inc. (WST) insider trading
In the 12 months to Oct 24, 2026, 2 WST insiders reported open-market sales of $6.6M across 4 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $6.6M
- 4 filings · 2 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 1 of 4
- $2.7M of $6.6M sold (41%)
Who traded WST, and when
- Sale
WST daily close from Oct 24, 2025 to Oct 23, 2026, between $230.95 and $394.03, last $392.15. 4 sale and 0 purchase filings by 2 insiders, marked at their filing dates. Annette F. Favorite, Sr. VP & Chief HR Officer: sold $6.3M across 3 filings, first filed Apr 29, 2026, last Sep 15, 2026. Chad Winters, VP, Chief Accounting Officer: sold $269.4K across 1 filing, first filed Apr 29, 2026, last Apr 29, 2026.
Largest mark · tap a row for others
Annette F. Favorite · Sr. VP & Chief HR Officer
Filing 1 of 2 within a week · $5,443,749 total
Sale $2,772,489
8,135 shares at $340.81 avg
Filed Sep 10, 2026 · traded Sep 8
Close on filing date $344.25
Annette F. Favorite · Sr. VP & Chief HR Officer
Sr. VP & Chief HR Officer
$6.3M soldChad Winters · VP, Chief Accounting Officer
VP, Chief Accounting Officer
$269.4K soldHas West Pharmaceutical Services, Inc.'s CEO sold stock?
No. Michel Lagarde and Eric Mark Green (CEOs) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
4 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Annette F. Favorite | Sr. VP & Chief HR Officer | $6.3M | — | 3 | 42% of sales | |
| Chad Winters | VP, Chief Accounting Officer | $269.4K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Annette F. Favorite Sr. VP & Chief HR Officer | SalePre-arranged (10b5-1) | 7,524 | $355.03 | $2.7M | 21,818 | |
traded | Annette F. Favorite Sr. VP & Chief HR Officer | Sale | 8,135 | $340.81 | $2.8M | 16,845 | |
traded | Chad Winters VP, Chief Accounting Officer | Sale | 896 | $300.67 | $269.4K | 1,523 | |
traded | Annette F. Favorite Sr. VP & Chief HR Officer | Sale | 2,817 | $305.20 | $859.8K | 16,828 |
GET /stocks/filings/vX/form-4?tickers=WST&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"WST",
"WSTw"
],
"issuer_cik": "0000105770",
"owner_cik": "0001654975",
"accession_number": "0000105770-26-000110",
"form_type": "4",
"filing_date": "2026-09-15",
"period_of_report": "2026-09-11",
"issuer_name": "WEST PHARMACEUTICAL SERVICES INC",
"issuer_trading_symbol": "WST",
"owner_name": "Favorite Annette F",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Sr. VP & Chief HR Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-09-14",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2500,
"transaction_price_per_share": 355,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 21817.8098,
"transaction_value": 887500,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"WST",
"WSTw"
],
"issuer_cik": "0000105770",
"owner_cik": "0001654975",
"accession_number": "0000105770-26-000110",
"form_type": "4",
"filing_date": "2026-09-15",
"period_of_report": "2026-09-11",
"issuer_name": "WEST PHARMACEUTICAL SERVICES INC",
"issuer_trading_symbol": "WST",
"owner_name": "Favorite Annette F",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Sr. VP & Chief HR Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-09-15",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2524,
"transaction_price_per_share": 365,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 21817.8098,
"transaction_value": 921260,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 48 records
- Option exercises19 records
- Tax withholding15 records
- Grants and awards14 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for WST every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.