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NYSE: AMPX
Amprius Technologies Inc Stock Ownership - Who owns Amprius Technologies?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Amprius Technologies Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Donald R. DixonDirector2026-06-1585,000$17.17
$1.46MSell
Donald R. DixonDirector2026-06-0940,000$19.13
$765.20kSell
Thomas M. StepienChief Executive Officer2026-06-042,000$20.97
$41.94kSell
Constantin Ionel StefanChief Technology Officer2026-05-273,208$17.19
$55.16kSell
Thomas M. StepienChief Executive Officer2026-05-274,375$17.19
$75.22kSell
Kang SunDirector2026-05-27356$17.19
$6.12kSell
Donald R. DixonDirector2026-05-2617,895$17.90
$320.25kSell
Thomas M. StepienChief Executive Officer2026-05-2160,702$14.79
$897.66kSell
Kang SunDirector2026-05-2167,796$14.79
$1.00MSell
Constantin Ionel StefanChief Technology Officer2026-05-2128,812$14.79
$426.07kSell

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Net Insider Buy/Sell (L12M) Ownership

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AMPX Shareholders

What type of owners hold Amprius Technologies Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc6.51%9,225,611$149.18MInstitution
Vanguard Capital Management LLC3.47%4,908,875$79.38MInstitution
Jane Street Group LLC2.94%4,160,656$67.28MInstitution
Wen Hsuan Hsieh2.89%4,093,689$66.19MInsider
Driehaus Capital Management LLC2.68%3,794,178$61.35MInstitution
Two Sigma Investments LP2.48%3,506,075$56.69MInstitution
Morgan Stanley2.23%3,162,167$51.13MInstitution
Geode Capital Management LLC1.99%2,814,530$45.51MInstitution
State Street Corp1.92%2,712,630$43.86MInstitution
Amprius Inc1.77%2,500,071$40.43MInsider

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AMPX vs Electrical Equipment & Part Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
AMPX59.75%10.50%Net SellingNet Selling
EOSE60.62%9.08%Net SellingNet Buying
TE65.00%35.00%Net SellingNet Selling
PLPC39.42%60.58%Net SellingNet Selling
ATKR96.22%3.35%Net SellingNet Selling
View Top Electrical Equipment & Part Stocks

Amprius Technologies Stock Ownership FAQ

Who owns Amprius Technologies?

Amprius Technologies (NYSE: AMPX) is owned by 59.75% institutional shareholders, 10.50% Amprius Technologies insiders, and 29.75% retail investors. Wen Hsuan Hsieh is the largest individual Amprius Technologies shareholder, owning 4.09M shares representing 2.89% of the company. Wen Hsuan Hsieh's Amprius Technologies shares are currently valued at $66.19M.

If you're new to stock investing, here's how to buy Amprius Technologies stock.
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