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SRZN SCHEDULE 13G: SEC filing

Filed with the SEC on · accession 0001831942-26-000044

SRZN filed a SCHEDULE 13G (schedule 13g) with the SEC on Oct 1, 2026. Commodore Capital LP, Commodore Capital Master LP, Robert Egen Atkinson, and Michael Kramarz filed a joint filing agreement as part of a Schedule 13G regarding their beneficial ownership position in Surrozen, Inc. The filing indicates a passive investment stance with no stated intent to influence… The stock moved -6.8% by the first close after the filing.

Summary of the filing

Commodore Capital LP, Commodore Capital Master LP, Robert Egen Atkinson, and Michael Kramarz filed a joint filing agreement as part of a Schedule 13G regarding their beneficial ownership position in Surrozen, Inc. The filing indicates a passive investment stance with no stated intent to influence control of the company.

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Key details

Reporting person / filerCommodore Capital LP
Reporting person / filerCommodore Capital Master LP
Issuer of securities heldSurrozen, Inc.
Managing partner, commodore capital lpMichael Kramarz
Reporting personRobert Egen Atkinson

How SRZN stock reacted

Close before

$32.18

Sep 30, 2026

First close after

-6.77%

$30.00

5 trading days

-21.86%

$25.14

Since filing

-3.67%

$31.00

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Frequently asked questions

What did SRZN file with the SEC on Oct 1, 2026?

SRZN filed a SCHEDULE 13G (SEC filing). Commodore Capital LP, Commodore Capital Master LP, Robert Egen Atkinson, and Michael Kramarz filed a joint filing agreement as part of a Schedule 13G regarding their beneficial ownership position in Surrozen, Inc. The filing indicates a passive investment stance with no stated intent to influence control of the company.

How do I read a SCHEDULE 13G?

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 (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did SRZN stock react to this filing?

SRZN closed at $32.18 before the filing and $30.00 on Oct 1, 2026 (-6.77%). Five trading days later: $25.14 (-21.86%).

Other SRZN SEC filings

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