Amprius Technologies, Inc. AMPX

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8.47 USD -0.36 (-4.08%)

At closeNov 4, 2026, 5:15 PM EST

8.50 +0.03 +0.36%

After hours · Nov 4, 5:15 PM ET

8.09 Day range 8.98

7.26 52-week range 24.23

Held by insiders 1.18%

Held by institutions 70.10%

Float held by institutions 70.93%

Institutions 358

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	8.00%	11,335,092	95.61M	Jun 29, 2026
Vanguard Capital Management LLC	3.93%	5,562,985	46.92M	Jun 29, 2026
Morgan Stanley	3.60%	5,105,505	43.06M	Jun 29, 2026
Two Sigma Investments, LP	3.05%	4,318,630	36.43M	Jun 29, 2026
UBS Group AG	2.88%	4,072,269	34.35M	Jun 29, 2026
Geode Capital Management, LLC	2.49%	3,520,655	29.70M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	2.70%	3,824,005	32.26M	Jun 29, 2026
iShares Trust-iShares Russell 2000 ETF	2.52%	3,562,533	30.05M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund	1.15%	1,625,154	13.71M	Jun 29, 2026
Fidelity Salem Street Trust-Fidelity Small Cap Index Fund	1.07%	1,515,717	12.79M	Aug 30, 2026
Vanguard Explorer Fund	0.97%	1,378,248	11.63M	Jul 30, 2026
iShares Trust-iShares Russell 2000 Growth ETF	0.91%	1,283,025	10.82M	Sep 29, 2026

AMPX insiders
Insider	Relation	Latest transaction	Date	Shares held
BAYLESS KATHLEEN ANN CPA.,	Director	Stock Award(Grant)	Jun 11, 2026	216,120
BORNSTEIN JONATHAN	Officer	Conversion of Exercise of derivative security	Mar 9, 2025	422,668
CHU STEVEN	Director	Stock Award(Grant)	Jun 11, 2026	137,762
DIXON DONALD R.	Director	Sale	Jun 14, 2026	0
RODRIGUEZ RICARDO C	Chief Financial Officer	Stock Award(Grant)	Mar 3, 2026	350,000
SATTERTHWAITE LIVINGSTON LORD	Director	Stock Award(Grant)	Jun 11, 2026	346,506

Held by funds