Offerings // Q32 Bio Inc.

QTTB offering history

Every offering-related filing in Q32 Bio Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 571 filings back to Jan 6, 2016.

Last executed offering

Jul 15, 2026

424B5 — priced deal (shares or notes)

Last registration (announced)

Jul 17, 2026

S-3 — capacity, not a sale

Executed, last 12 months

424B pricings + 8-K 3.02 sales

Registered, last 12 months

S-1/S-3/F-series registrations

Date	Filing		What it means
Jul 28, 2026	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 28, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 17, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jul 15, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 13, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 13, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 25, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
May 27, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Apr 24, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 27, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 17, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 21, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 16, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 11, 2025	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Mar 11, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Mar 10, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 10, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 11, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 7, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 8, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 9, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 9, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 29, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 29, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 19, 2024	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Mar 27, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 13, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 14, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 14, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 16, 2023	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 17, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 9, 2023	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Apr 8, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 7, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 12, 2021	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 9, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 12, 2020	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Apr 10, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 9, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 8, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)

QTTB offering-related filings from SEC EDGAR, newest first (capped at 40). Each links to the original document.

Two honest limits. (1) A 424B takedown can price shares or notes— EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.

Is a shelf active now? →Do they need money? →Red flags →Full QTTB workspace →

QTTB offering FAQ

When did QTTB last execute an offering?

Per SEC filings, Q32 Bio Inc.'s most recent priced offering document is a 424B5 filed 2026-07-15. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did QTTB last announce or register an offering?

The most recent registration is a S-3 filed 2026-07-17. A registration is capacity to sell shares — not a sale.

Does an offering always mean dilution?

Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.