Offerings // MainStreet Bancshares, Inc.

MNSB offering history

Every offering-related filing in MainStreet Bancshares, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 494 filings back to Jan 11, 2017.

Last executed offering

Sep 14, 2020

424B5 — priced deal (shares or notes)

Last registration (announced)

Jun 3, 2026

S-3/A — 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
Jun 10, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 10, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 3, 2026	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
May 15, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jun 13, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 11, 2024	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
May 22, 2024	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
May 20, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 14, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 11, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Sep 10, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 24, 2020	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 18, 2020	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Aug 5, 2020	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet

MNSB 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 MNSB workspace →

MNSB offering FAQ

When did MNSB last execute an offering?

Per SEC filings, MainStreet Bancshares, Inc.'s most recent priced offering document is a 424B5 filed 2020-09-14. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did MNSB last announce or register an offering?

The most recent registration is a S-3/A filed 2026-06-03. 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.