Offerings // Hyliion Holdings Corp.

HYLN offering history

Every offering-related filing in Hyliion Holdings Corp.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 647 filings back to Nov 20, 2018.

Last executed offering

Aug 11, 2026

424B5 — priced deal (shares or notes)

Last registration (announced)

Feb 25, 2026

S-3 — 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
Aug 11, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 5, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 25, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Aug 25, 2022	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 28, 2022	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jan 5, 2022	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jan 4, 2022	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 10, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Oct 14, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 26, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 24, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 17, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 12, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 11, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 15, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 14, 2021	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 24, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 17, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 17, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 11, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 11, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 30, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Mar 31, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 26, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 27, 2020	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 27, 2020	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 23, 2020	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Oct 23, 2020	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Oct 7, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jun 19, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 5, 2019	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 1, 2019	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Feb 27, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 15, 2019	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Feb 6, 2019	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet

HYLN 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 HYLN workspace →

HYLN offering FAQ

When did HYLN last execute an offering?

Per SEC filings, Hyliion Holdings Corp.'s most recent priced offering document is a 424B5 filed 2026-08-11. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did HYLN last announce or register an offering?

The most recent registration is a S-3 filed 2026-02-25. 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.