Offerings // PROSPERITY BANCSHARES INC

PB offering history

Every offering-related filing in PROSPERITY BANCSHARES INC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to Oct 27, 2011.

Last executed offering

None found

in filings back to Oct 27, 2011

Last registration (announced)

Dec 21, 2016

S-3ASR — 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
Apr 21, 2026	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 21, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 18, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 18, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 30, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 30, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 31, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 17, 2019	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 17, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 21, 2016	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Nov 13, 2015	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 25, 2014	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 23, 2013	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 14, 2013	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 7, 2012	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 26, 2012	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 26, 2012	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Feb 16, 2012	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 7, 2012	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Oct 27, 2011	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin

PB 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 PB workspace →

PB offering FAQ

When did PB last execute an offering?

No executed-offering document (424B pricing supplement or 8-K item 3.02) appears in the 1001 filings EDGAR returns for PROSPERITY BANCSHARES INC, reviewed back to 2011-10-27.

When did PB last announce or register an offering?

The most recent registration is a S-3ASR filed 2016-12-21. 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.