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QTTB SCHEDULE 13G: SEC filing

Frazier Life Sciences entities

Filed with the SEC on · accession 0001231919-26-001441

QTTB filed a SCHEDULE 13G (schedule 13g) with the SEC on Oct 9, 2026. Frazier Life Sciences entities filed a joint filing agreement under Schedule 13G regarding their ownership of Q32 Bio Inc. common stock. The stock moved +3.1% by the first close after the filing.

Summary of the filing

Frazier Life Sciences entities filed a joint filing agreement under Schedule 13G regarding their ownership of Q32 Bio Inc. common stock. The filing is a procedural joint filing agreement with no disclosed ownership percentages or changes.

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Key details

Issuer whose common stock is subject to the schedule 13g filingQ32 Bio Inc.
Filer / beneficial ownerFrazier Life Sciences Public Fund, L.P.
General partner of frazier life sciences public fund, l.p.FHMLSP, L.P.
General partner of fhmlsp, l.p.FHMLSP, L.L.C.
Filer / beneficial ownerFrazier Life Sciences XI, L.P.
General partner of frazier life sciences xi, l.p.FHMLS XI, L.P.
General partner of fhmls xi, l.p.FHMLS XI, L.L.C.
Filer / beneficial ownerFrazier Life Sciences XII, L.P.
General partner of frazier life sciences xii, l.p.FHMLS XII, L.P.
General partner of fhmls xii, l.p.FHMLS XII, L.L.C.
Chief financial officerJennifer Martin

How QTTB stock reacted

Close before

$8.09

Oct 8, 2026

First close after

+3.09%

$8.34

5 trading days

-3.96%

$7.77

Since filing

+9.39%

$8.85

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Frequently asked questions

What did QTTB file with the SEC on Oct 9, 2026?

QTTB filed a SCHEDULE 13G (SEC filing). Frazier Life Sciences entities filed a joint filing agreement under Schedule 13G regarding their ownership of Q32 Bio Inc. common stock. The filing is a procedural joint filing agreement with no disclosed ownership percentages or changes.

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 QTTB stock react to this filing?

QTTB closed at $8.09 before the filing and $8.34 on Oct 9, 2026 (+3.09%). Five trading days later: $7.77 (-3.96%).

Other QTTB SEC filings

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