Offerings // GOLUB CAPITAL BDC, Inc.

GBDC offering history

Every offering-related filing in GOLUB CAPITAL BDC, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to Dec 10, 2012.

Last executed offering

May 20, 2026

424B2 — priced deal (shares or notes)

Last registration (announced)

None found

in filings back to Dec 10, 2012

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 20, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 19, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 19, 2026	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Sep 23, 2025	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 19, 2025	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 19, 2025	FWP →	MARKETING	Free-writing prospectus — offering being marketed
May 16, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 26, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Nov 25, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Nov 25, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Apr 15, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 15, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 30, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jan 29, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jan 29, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Dec 1, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Nov 30, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Nov 30, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 10, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Oct 12, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 12, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 7, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 7, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 7, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 7, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jul 28, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 27, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 27, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
May 28, 2021	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 18, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 17, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 17, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Sep 30, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 29, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 29, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jul 12, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 1, 2018	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 26, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 21, 2016	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Apr 13, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin

GBDC 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 GBDC workspace →

GBDC offering FAQ

When did GBDC last execute an offering?

Per SEC filings, GOLUB CAPITAL BDC, Inc.'s most recent priced offering document is a 424B2 filed 2026-05-20. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did GBDC last announce or register an offering?

No offering registration (S-1/S-3/F-1/F-3) appears in the filings reviewed back to 2012-12-10.

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.