Amprius Technologies, Inc.

NYSE:AMPX Stock Report

Market Cap: US$1.6b

Amprius Technologies Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:AMPX Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
21 Aug 25SellUS$447,511Kang SunIndividual65,654US$6.82
21 Aug 25SellUS$193,512Sandra WallachIndividual28,390US$6.82
21 Aug 25SellUS$130,592Constantin StefanIndividual19,159US$6.82
21 May 25SellUS$169,720Kang SunIndividual69,786US$2.43
21 May 25SellUS$49,530Constantin StefanIndividual20,366US$2.43
21 May 25SellUS$67,111Sandra WallachIndividual27,595US$2.43
21 Feb 25SellUS$56,843Sandra WallachIndividual18,142US$3.13
21 Feb 25SellUS$42,383Jonathan BornsteinIndividual13,527US$3.13
21 Feb 25SellUS$28,406Constantin StefanIndividual9,066US$3.13
21 Feb 25SellUS$107,635Kang SunIndividual34,353US$3.13
21 Nov 24SellUS$33,709Sandra WallachIndividual17,158US$1.96
21 Nov 24SellUS$322,016Jonathan BornsteinIndividual166,706US$1.96
21 Nov 24SellUS$16,846Constantin StefanIndividual8,575US$1.96
21 Nov 24SellUS$66,362Kang SunIndividual33,779US$1.96

Insider Trading Volume

Insider Buying: AMPX insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of AMPX?
Owner TypeNumber of SharesOwnership Percentage
Private Companies2,500,0712%
Individual Insiders6,524,0825.22%
Institutions50,623,96940.5%
General Public65,427,71552.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 39.5% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
4.21%
BlackRock, Inc.
5,270,018US$65.8m391%no data
3.8%
The Vanguard Group, Inc.
4,755,225US$59.4m-2.18%no data
3.16%
Kleiner Perkins Caufield & Byers
3,949,245US$49.3m3,850%0.86%
2.89%
Millennium Management LLC
3,616,380US$45.2m159%0.03%
2.72%
Trident Capital, Inc.
3,406,497US$42.5m0%100.0%
2.33%
VantagePoint Capital Partners
2,912,992US$36.4m-57.9%100.0%
2%
Amprius, Inc
2,500,071US$31.2m0%no data
1.71%
Yi Cui
2,141,007US$26.7m0%no data
1.66%
Kensington Capital Partners, LLC
2,073,042US$25.9m0%100.0%
1.53%
Morgan Stanley
1,912,116US$23.9m1,030%no data
1.27%
Geode Capital Management, LLC
1,593,607US$19.9m168%no data
1.13%
Two Sigma Investments, LP
1,411,608US$17.6m243%0.03%
1.08%
Renaissance Technologies LLC
1,346,600US$16.8m9,250%0.02%
0.97%
Justin Mirro
1,212,895US$15.1m0%no data
0.94%
State Street Global Advisors, Inc.
1,176,718US$14.7m183%no data
0.92%
Stanford Management Company
1,146,636US$14.3m-21.3%1.3%
0.88%
Marshall Wace LLP
1,105,413US$13.8m16.1%0.02%
0.88%
Invesco Capital Management LLC
1,102,758US$13.8m-5.16%no data
0.85%
Jonathan Bornstein
1,065,828US$13.3m0%no data
0.82%
Essex Investment Management Company, LLC
1,025,357US$12.8m9.57%1.94%
0.81%
JPMorgan Chase & Co.
1,017,217US$12.7m12,100%no data
0.8%
Robert W. Baird & Co. Incorporated
1,000,711US$12.5m99.9%0.02%
0.72%
Stifel Asset Management Corp.
896,225US$11.2m-0.51%0.01%
0.71%
Donald Dixon
890,629US$11.1m60.7%no data
0.7%
Susquehanna International Group, LLP
877,328US$11.0m6.58%0.01%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2025/10/03 04:01
End of Day Share Price 2025/10/03 00:00
Earnings2025/06/30
Annual Earnings2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Amprius Technologies, Inc. is covered by 8 analysts. 7 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Ryan PfingstB. Riley Securities, Inc.
Christopher SoutherB. Riley Securities, Inc.
Derek SoderbergCantor Fitzgerald & Co.