Offerings // Ecovyst Inc.

ECVT offering history

Every offering-related filing in Ecovyst Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 576 filings back to Jun 9, 2017.

Last executed offering

Oct 2, 2017

424B4 — priced deal (shares or notes)

Last registration (announced)

Apr 26, 2021

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
May 25, 2023	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
May 24, 2023	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
May 24, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 6, 2023	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Mar 2, 2023	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Mar 2, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 15, 2022	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 15, 2022	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Nov 14, 2022	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 4, 2022	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 3, 2022	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 3, 2022	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 19, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Nov 16, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Apr 29, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Apr 26, 2021	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Apr 26, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Oct 2, 2017	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Sep 29, 2017	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Sep 28, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 25, 2017	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Sep 25, 2017	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Sep 19, 2017	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Sep 1, 2017	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Aug 14, 2017	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Jul 18, 2017	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Jun 9, 2017	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet

ECVT 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 ECVT workspace →

ECVT offering FAQ

When did ECVT last execute an offering?

Per SEC filings, Ecovyst Inc.'s most recent priced offering document is a 424B4 filed 2017-10-02. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did ECVT last announce or register an offering?

The most recent registration is a S-3ASR filed 2021-04-26. 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.

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