Amprius Technologies, Inc.

NYSE:AMPX Stock Report

Market Cap: US$1.7b

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
15 Jun 26SellUS$1,459,212Donald DixonIndividual85,000US$17.17
09 Jun 26SellUS$765,200Donald DixonIndividual40,000US$19.13
04 Jun 26SellUS$41,940Thomas StepienIndividual2,000US$20.97
27 May 26SellUS$55,157Constantin StefanIndividual3,208US$17.19
27 May 26SellUS$75,222Thomas StepienIndividual4,375US$17.19
27 May 26SellUS$6,121Kang SunIndividual356US$17.19
26 May 26SellUS$320,252Donald DixonIndividual17,895US$17.90
21 May 26SellUS$897,685Thomas StepienIndividual60,702US$14.79
21 May 26SellUS$426,083Constantin StefanIndividual28,812US$14.79
21 May 26SellUS$1,002,594Kang SunIndividual67,796US$14.79
12 Mar 26SellUS$2,607,958Wen Hsuan HsiehIndividual142,895US$18.55
10 Mar 26SellUS$1,119,769Steven ChuIndividual62,500US$17.92
23 Feb 26SellUS$257,604Constantin StefanIndividual25,366US$10.16
23 Feb 26SellUS$622,035Kang SunIndividual61,251US$10.16
21 Nov 25SellUS$692,132Kang SunIndividual68,655US$10.08
21 Nov 25SellUS$252,274Constantin StefanIndividual25,024US$10.08
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

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 Companies2,500,0711.73%
Individual Insiders6,023,5424.17%
General Public34,859,01724.1%
Institutions100,971,17169.9%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 19.7%.

Top Shareholders

Top 25 shareholders own 49% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
6.39%
BlackRock, Inc.
9,225,611US$106.8m4.55%no data
4.86%
Jane Street Group, LLC
7,014,784US$81.2m68.6%0.07%
3.4%
Vanguard Capital Management, LLC
4,908,875US$56.8m0%no data
2.74%
Kleiner Perkins Caufield & Byers LLC
3,949,245US$45.7m0%3.58%
2.63%
Driehaus Capital Management LLC
3,794,178US$43.9m58.5%0.19%
2.43%
Two Sigma Investments, LP
3,506,075US$40.6m144%0.03%
2.36%
Trident Capital, Inc.
3,406,497US$39.4m0%100.0%
2.15%
Morgan Stanley
3,107,790US$36.0m12.5%no data
2.02%
VantagePoint Capital Partners
2,912,992US$33.7m0%100.0%
1.95%
Geode Capital Management, LLC
2,814,530US$32.6m5.08%no data
1.88%
State Street Global Advisors, Inc.
2,712,630US$31.4m6.22%no data
1.76%
UBS Asset Management AG
2,536,778US$29.4m10.9%no data
1.73%
Amprius, Inc
2,500,071US$29.0m0%no data
1.48%
Yi Cui
2,141,007US$24.8m0%no data
1.4%
Massachusetts Financial Services Company
2,024,760US$23.4m0%0.01%
1.34%
The Goldman Sachs Group, Inc.
1,936,679US$22.4m38.2%0.01%
1.31%
T. Rowe Price Group, Inc.
1,897,420US$22.0m2,250%no data
1.1%
Robert W. Baird & Co. Incorporated
1,584,428US$18.3m105%0.03%
1%
Citadel Advisors LLC
1,438,660US$16.7m216%0.01%
0.9%
Norges Bank Investment Management
1,304,838US$15.1m0%no data
0.9%
William Blair Investment Management, LLC
1,296,753US$15.0m26.5%0.02%
0.85%
Marshall Wace LLP
1,227,599US$14.2m0%0.01%
0.85%
Qube Research & Technologies Ltd
1,227,570US$14.2m40.4%0.02%
0.82%
Calamos Advisors LLC
1,184,556US$13.7m76.2%0.07%
0.74%
D. E. Shaw & Co., L.P.
1,075,386US$12.5m0%0.01%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/07/09 02:45
End of Day Share Price 2026/07/09 00:00
Earnings2026/03/31
Annual Earnings2025/12/31

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 9 analysts. 9 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.
Derek SoderbergCantor Fitzgerald & Co.
Amit DayalH.C. Wainwright & Co.