SEPTInvestingStart Free

QTTB 424B5: Secondary offering

Filed with the SEC on · accession 0001193125-26-304946

QTTB filed a 424B5 (prospectus (offering)) with the SEC on Jul 15, 2026. The final terms of an offering of shares or bonds. The stock moved -15.0% by the first close after the filing.

Summary of the filing

Q32 Bio Inc. is offering 6,027,399 shares of common stock and pre-funded warrants to purchase up to 4,931,506 shares at a public offering price of $18.25 per share, with total proceeds expected to be approximately $188 million before expenses.

For details, click here →How to read a 424B5 →

Key details

Total public offering price$200.0M
Underwriting discounts and commissions$12.0M
Proceeds to company before expenses$188.0M
IssuerQ32 Bio Inc.
UnderwriterMorgan Stanley
UnderwriterJefferies
UnderwriterCantor
UnderwriterOppenheimer & Co.
UnderwriterH.C. Wainwright & Co.

How QTTB stock reacted

Close before

$18.46

Jul 14, 2026

First close after

-14.95%

$15.70

5 trading days

-16.52%

$15.41

Since filing

-49.89%

$9.25

✦ Ask GOAX AI about this filing — what it means for QTTB, 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 QTTB?

Click here

Frequently asked questions

What did QTTB file with the SEC on Jul 15, 2026?

QTTB filed a 424B5 (Secondary offering). Q32 Bio Inc. is offering 6,027,399 shares of common stock and pre-funded warrants to purchase up to 4,931,506 shares at a public offering price of $18.25 per share, with total proceeds expected to be approximately $188 million before expenses.

What does a secondary offering mean for QTTB stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B5?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

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 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did QTTB stock react to this filing?

QTTB closed at $18.46 before the filing and $15.70 on Jul 15, 2026 (-14.95%). Five trading days later: $15.41 (-16.52%).

Other QTTB SEC filings

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

Try SEPT free for 7 days
QTTB overviewQTTB analysisQTTB newsLatest SEC filings