Companies / Amprius Technologies, Inc.

Amprius Technologies, Inc.

NYSE: AMPXCIK 1899287FREMONT, CA

Financials · FY2025

Revenue$73.01M
Net income$-44.02M
Total debt—
Cash$74.52M
Diluted EPS$-0.35
Shares outstanding146.1M

Ownership

146.1M shares outstanding · as of Jul 31, 2026
2.2%Insiders
Ownership
Insiders2.21%3,222,068
Institutions51.82%75,700,480
Public float45.97%67,158,070

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 8

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Insider% of sharesShares
Sun KangDirector
0.96%1,398,806
Stefan Constantin IonelFormerChief Technology Officer
0.57%833,330
Stepien Thomas MCEOChief Executive Officer · Director
0.52%760,000
Dixon Donald RDirector
0.25%359,380
Rodriguez Ricardo C.Chief Financial Officer
0.24%350,000
Bayless Kathleen aDirector
0.15%216,120
Chu StevenDirector
0.09%137,762
HSIEH Wen HsuanFormerDirector
0.03%44,444

Institutional holders 218

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HolderValue% of shares
BlackRock, Inc.$157.10M7.76%
Two Sigma Investments, LP$59.11M2.40%
Vanguard Group Inc$56.25M4.88%
Geode Capital Management, LLC$47.46M1.93%
State Street Corporation$44.91M2.22%
Morgan Stanley$22.17M1.92%
Marshall Wace, LLP$20.70M0.84%
Driehaus Capital Management LLC$18.88M1.64%
D. E. Shaw & Co., Inc.$18.13M0.74%
Millennium Management LLC$17.45M0.71%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Jan 16, 2026Sun Kang
Director
SellCommon stock$10.52M-951K
-40.38%
1,403,651
0.96% of shares
medium
Jan 22, 2026Stefan Constantin Ionel
Executive
SellCommon stock$5.93M-493K
-39.70%
748,696
0.51% of shares
medium
Mar 12, 2026HSIEH Wen Hsuan
Director
SellCommon stock$5.24M-283K
-61.74%
175,090
0.12% of shares
medium
Jan 12, 2026Sun Kang
Director
SellCommon stock$5.11M-506K
-26.51%
1,403,651
0.96% of shares
medium
Mar 10, 2026Chu Steven
Director
SellCommon stock$2.99M-167K
-56.68%
127,339
0.09% of shares
medium
Mar 23, 2026Sun Kang
Director
SellCommon stock$2.86M-153K
-55.72%
121,452
0.08% of shares
medium
Mar 12, 2026HSIEH Wen Hsuan
Director
SellCommon stock$2.38M-131K
-74.62%
44,444
0.03% of shares
medium
Jan 16, 2026Sun Kang
Director
ExerciseCommon stock$2.13M+850K
+60.58%
2,253,989
1.54% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
AMPX——03214Q108—