A 424B4 is the final prospectus filed under Rule 424(b)(4) once an offering is priced, usually the day after an IPO. Unlike the S-1 or F-1 it contains the final price, the number of shares sold and the underwriting discount.
It is the cleanest source for IPO terms. The IPO API reads them for you: price, shares, proceeds and underwriters.
Query syntax
Fields: formType, ticker, cik, companyName, filedAt, accessionNo, items (8-K item numbers), sic, state, periodOfReport. Join terms with AND, OR and NOT and group them with parentheses.
- Exact value:
formType:"10-K"(quotes keep the hyphen and spaces) - Any of a list:
ticker:(AAPL, MSFT, NVDA) - Date range:
filedAt:[2026-01-01 TO 2026-06-30] - Prefix:
formType:10-K*also matches 10-K/A and 10-KT - Part of a name:
companyName:"bank of"
Full reference with every field: filing search docs.