Offerings // Editas Medicine, Inc.

EDIT offering history

Every offering-related filing in Editas Medicine, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 714 filings back to Aug 18, 2015.

Last executed offering

May 26, 2026

424B5 — priced deal (shares or notes)

Last registration (announced)

May 26, 2026

S-3MEF — 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
May 26, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 26, 2026	S-3MEF →	REGISTERED	S-3MEF registration — capacity to sell shares, not a sale yet
May 26, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 21, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 28, 2024	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jun 15, 2023	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 14, 2023	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 14, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 1, 2021	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jan 21, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jan 19, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jan 11, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jun 25, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 23, 2020	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
May 15, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 8, 2018	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Mar 12, 2018	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jan 22, 2018	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jan 12, 2018	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jan 4, 2018	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Dec 22, 2017	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Dec 7, 2017	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 5, 2017	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 22, 2017	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Sep 18, 2017	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 14, 2017	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 4, 2017	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Apr 3, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 28, 2017	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Mar 17, 2017	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 15, 2017	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 15, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 8, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Mar 3, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 3, 2016	424B1 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 2, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 25, 2016	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Jan 4, 2016	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet

EDIT 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 EDIT workspace →

EDIT offering FAQ

When did EDIT last execute an offering?

Per SEC filings, Editas Medicine, Inc.'s most recent priced offering document is a 424B5 filed 2026-05-26. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did EDIT last announce or register an offering?

The most recent registration is a S-3MEF filed 2026-05-26. 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.