Amprius Technologies, Inc. SEC filings AMPX

Amprius Technologies, Inc. has 501 filings in SEC EDGAR's recent list, going back to Dec 15, 2021. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 28, 2026 (material agreement). The company's fiscal year ends on December 31.

Form Description Filed Period
DEFA14A Additional proxy material Apr 29, 2026 —
DEF 14A Proxy statement Apr 29, 2026 Jun 11, 2026
DEFA14A Additional proxy material Apr 25, 2025 —
DEF 14A Proxy statement Apr 25, 2025 Jun 12, 2025
DEFA14A Additional proxy material Apr 25, 2024 —
DEF 14A Proxy statement Apr 25, 2024 Jun 6, 2024
DEFA14A Additional proxy material Apr 27, 2023 —
DEF 14A Proxy statement Apr 27, 2023 Jun 8, 2023

Showing 8 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.

Company profile

Industry
Miscellaneous Electrical Machinery, Equipment & Supplies (SIC 3690)
Listed as
AMPX (NYSE), AMPX-WT (NYSE)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Fremont, CA
SEC filer status
, Emerging growth company
SEC CIK
1899287
Former names
Kensington Capital Acquisition Corp. IV (until Sep 14, 2022)

Other Miscellaneous Electrical Machinery, Equipment & Supplies companies

All 55 Miscellaneous Electrical Machinery, Equipment & Supplies companies

Source: SEC EDGAR filings. This is company-reported data, not investment advice.