StockCIK 105770

WEST PHARMACEUTICAL SERVICES INC (WST): Insider Trades and Fund Holdings

In the past 12 months, WEST PHARMACEUTICAL SERVICES INC insiders reported 0 open-market purchases worth $0 and 4 sales worth $5.44M; 3 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months

$0Bought by insiders, 12 months

$5.44MSold by insiders, 12 months

3Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Sep 15, 2026.

Recent WST insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Sep 15	Sep 15	Annette F. FavoriteVP	VP	▼ SELL10b5-1	2,524	365.00	$921K	−10%	Form 4 ↗
Sep 15	Sep 14	Annette F. FavoriteVP	VP	▼ SELL10b5-1	2,500	355.00	$888K	−10%	Form 4 ↗
Sep 15	Sep 11	Annette F. FavoriteVP	VP	▼ SELL10b5-1	2,500	345.00	$863K	−10%	Form 4 ↗
Sep 10	Sep 8	Annette F. FavoriteVP	VP	▼ SELL	8,135	340.81	$2.77M	−33%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

Insider	Role	Buys	Bought	Sells	Sold	Latest
Annette F. Favorite	VP	0	$0	4	$5.44M	Sep 15, 2026

Tracked funds that report WST

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Gates Foundation Trust	Q2 2026	444,500	$159.6M	0.46%	No change
Renaissance Technologies	Q2 2026	30,900	$11.1M	0.02%	▼ −85.3%
Bridgewater Associates	Q2 2026	10,429	$3.74M	0.02%	▼ −55.0%
Viking Global Investors	Q2 2026	0	$0	0.00%	▼ Sold out

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →