What is form s-1 in a SPAC?

Filings

Form S-1

The registration statement for the IPO, and the first public sighting of a new SPAC.

Also written: s1, registration statement

The S-1 sets out the proposed structure: how much is being raised, the unit composition, the deadline, the sponsor and the management team.

It is amended, sometimes many times, before the SEC declares it effective. Plenty of S-1 filers never price at all.

Related terms

Form 424B4
The final prospectus, filed once the offering prices, confirming the terms that actually apply.
Blank-check company
The SEC's own term for a development-stage company with no specific business plan, which is how SPACs are classified and found.

See the term in the wild: the screener shows trust size, per-share value and deadlines for every U.S. SPAC, and each profile links to the filings the numbers came from.

Definitions describe market practice and are not investment, legal or tax advice.