By CapitalSnitch Research Desk · updated Oct 11, 2026 · data from SEC filings and official Congress disclosures
Insider activity at Amprius Technologies, Inc. has been all selling for a year now: about $85.7 million from six sellers, and zero buyers at market prices.
Selling on its own is common and often pre-planned (10b5-1 plans, taxes, diversification), so it matters more when it is unusually heavy or broad.
7 quarters in a row of net selling by insiders. Insiders bought in 0 of the last 7 full quarters. On the institutional side, 262 funds reported holding AMPX at the end of Q2 2026, and more funds bought than sold.
Are insiders buying or selling AMPX stock?
In the last 12 months Amprius Technologies, Inc. insiders made open-market purchases worth about $0 and sales worth about $85.7 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
When was the last insider trade in AMPX?
The most recent open-market insider trade in AMPX was filed on 2026-08-25.
How many institutions own AMPX?
262 investment managers reported holding AMPX in SEC Form 13F filings for Q2 2026.
Has any member of Congress traded AMPX?
No congressional trades in AMPX were reported in the past two years. The full list is free on CapitalSnitch.
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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1).
Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).