Amprius Technologies, Inc. (AMPX)
NYSE: AMPX · Miscellaneous Electrical Machinery, Equipment & Supplies · Fremont, CA · filing with the SEC since 2021
Filings
279 filings since 2017 beside 224 insider forms · and emerging growth company · read from EDGAR on Nov 13, 2026Due next and emerging growth company
10-K
Annual report for the fiscal year ending Dec 31, 2026Non-accelerated filers and smaller reporting companies have 90 days after the fiscal year ends.
by Mar 31, 2027
10-Q
Quarterly report for the quarter ending Mar 31, 2027Non-accelerated filers and smaller reporting companies have 45 days after the quarter ends; quarter ends are taken to the month end.
by May 15, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 41 days after the quarter ended. The proxy statement was last filed Apr 29, 2026.
Filings a yearinsider forms included
11181291086780
2026 counts to Nov 13, 2026.
Auditor change (8-K item 4.01): 1 time in the last 36 months, the newest Apr 21, 2026.Officer or director change (8-K item 5.02): 7 times in the last 36 months, the newest Dec 22, 2025.Listing warning from its exchange (8-K item 3.01): 1 time in the last 36 months, the newest Sep 20, 2024.SEC letters: 2 in the last 36 months, the newest Jun 3, 2024.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
Aug 13, 2026
8-K items 1.01, 2.03, 9.01
Major agreement signed; New debt or obligation taken on · Current report
Aug 7, 2026
May 7, 2026
8-K items 1.01, 3.02, 9.01
Major agreement signed; Shares sold without registration · Current report
May 6, 2026
40 of 279 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.