What is form 424b4 in a SPAC?

Filings

Form 424B4

The final prospectus, filed once the offering prices, confirming the terms that actually apply.

Also written: 424b4, final prospectus

The 424B4 is the authoritative description of the vehicle: gross proceeds, the amount placed in trust, trust per unit, warrant coverage, the deadline, the underwriting syndicate and its allocation.

For anyone reconstructing a SPAC's economics, this is the document to start from.

Related terms

Form S-1
The registration statement for the IPO, and the first public sighting of a new SPAC.
Underwriter
The bank or banks that market and place the IPO, credited on the prospectus cover.
Unit
What a SPAC actually sells in its IPO: one share bundled with a fraction of a warrant, and sometimes a right.

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.