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BBSI SCHEDULE 13G/A: SEC filing

Mawer Investment Management Ltd.

Filed with the SEC on · accession 0000945621-26-001391

BBSI filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 13, 2026. Mawer Investment Management Ltd. filed an amended Schedule 13G reporting beneficial ownership of 853,874 shares, or 3.52%, of Barrett Business Services Inc. common stock as of September 30, 2026. The stock moved -0.8% by the first close after the filing.

Summary of the filing

Mawer Investment Management Ltd. filed an amended Schedule 13G reporting beneficial ownership of 853,874 shares, or 3.52%, of Barrett Business Services Inc. common stock as of September 30, 2026. The filing is a passive institutional ownership disclosure with no change in control intent.

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Key details

Shares beneficially owned$854K
Percent of class beneficially ownedPCT 4
Issuer shares outstanding$24.2M
Reporting beneficial owner / institutional investment managerMawer Investment Management Ltd.
Issuer of the securitiesBarrett Business Services Inc.
Portfolio manager, mawer investment management ltd.John Wilson

How BBSI stock reacted

Close before

$31.03

Nov 12, 2026

First close after

-0.84%

$30.77

5 trading days

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Since filing

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Frequently asked questions

What did BBSI file with the SEC on Nov 13, 2026?

BBSI filed a SCHEDULE 13G/A (SEC filing). Mawer Investment Management Ltd. filed an amended Schedule 13G reporting beneficial ownership of 853,874 shares, or 3.52%, of Barrett Business Services Inc. common stock as of September 30, 2026. The filing is a passive institutional ownership disclosure with no change in control intent.

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 BBSI stock react to this filing?

BBSI closed at $31.03 before the filing and $30.77 on Nov 13, 2026 (-0.84%).

Other BBSI SEC filings

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