AMPRIUS TECHNOLOGIES INC (AMPX) Institutional Ownership and Insiders Activity

AMPRIUS TECHNOLOGIES INC (AMPX) is widely held by institutional investors, with 2 tracked firms reporting positions valued at approximately $12.51M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Polen Capital Management is the largest disclosed holder, reporting approximately $7.12M in AMPX holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Polen Capital Management representing the majority of disclosed value.

Recent insider activity includes 16 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.