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AMPRIUS TECHNOLOGIES (AMPX)

Institutional ownership, SEC filings and insider activity

Sector: Industry · SEC CIK 0001899287 · EDGAR filings · Updated 2026-07-27

AMPRIUS TECHNOLOGIES (AMPX) has reported institutional ownership of 59.8%, with 246 institutional managers holding positions valued at $1.42B per the latest 13F reporting period. SEC filings include an active notice of delisting or failure to satisfy a continued listing rule (8-K Item 3.01).

Filings this week (1)

• 2026-07-27 — SCHEDULE 13G/A filed

Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.

Latest updates

• 2026-06-17 — Current report (8-K) filed
• 2026-06-16 — Insider transaction reported (Form 4)
• 2026-06-16 — Insider transaction reported (Form 4)
• 2026-06-16 — Insider transaction reported (Form 4)
• 2026-06-16 — Insider transaction reported (Form 4)

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, AMPRIUS TECHNOLOGIES has 246 institutional holders and institutional ownership of 59.8%.

Insider activity

Insiders reported 63 transactions (0 buys, 27 sells) across 10 reporting insiders, with a net reported value of −$56.6M.

Data flags from SEC filings

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