SEPTInvestingStart Free

WST SCHEDULE 13G/A: SEC filing

An institutional holder

Filed with the SEC on · accession 0000315066-26-002889

WST filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 5, 2026. An institutional holder filed an amended Schedule 13G regarding its beneficial ownership position in West Pharmaceutical Services (WST). The stock moved -2.8% by the first close after the filing.

Summary of the filing

An institutional holder filed an amended Schedule 13G regarding its beneficial ownership position in West Pharmaceutical Services (WST). The filing indicates a change in the holder's ownership stake.

For details, click here →

Key details

IssuerWest Pharmaceutical Services Inc

How WST stock reacted

Close before

$408.78

Nov 4, 2026

First close after

-2.81%

$397.27

5 trading days

—

Since filing

—

✦ Ask GOAX AI about this filing — what it means for WST, what changed since its last filings and what to watch next.

Try it free for 7 days

🔔 Want to stay updated on new SEC filings for WST?

Click here

Frequently asked questions

What did WST file with the SEC on Nov 5, 2026?

WST filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G regarding its beneficial ownership position in West Pharmaceutical Services (WST). The filing indicates a change in the holder's ownership stake.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did WST stock react to this filing?

WST closed at $408.78 before the filing and $397.27 on Nov 5, 2026 (-2.81%).

Other WST SEC filings

Get alerts when WST files with the SEC, plus live charts, key levels and news for 13,000+ stocks.

Try SEPT free for 7 days
WST overviewWST analysisWST newsLatest SEC filings