InsiderClue
Stocks · Technology · Miscellaneous Electrical Machinery, Equipment & Supplies

Amprius Technologies, Inc.

AMPX Clue Score50
United States Fiscal year ends December CIK 0001899287 Results filed 4 Aug 2026
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What the insiders did Net selling

Individual transactions

35
Insider
Date
Role
Action
Shares
Price
Amount
Kang Sun
1 Apr 2026
Director
Sold after exercise
249,037
$16.78
$4.18M
Kang Sun
1 Apr 2026
Director
Sold after exercise
1,250,963
$15.73
$19.68M
Steven Chu
12 Mar 2026
Director
Sold after exercise
5,565
$18.53
$103.15K
Steven Chu
12 Mar 2026
Director
Sold after exercise
50,000
$18.21
$910.74K
Steven Chu
12 Mar 2026
Director
Sold after exercise
100,000
$18.65
$1.86M
Wen Hsuan HSIEH
12 Mar 2026
Director
Sold after exercise
130,646
$18.22
$2.38M
Wen Hsuan HSIEH
12 Mar 2026
Director
Sold after exercise
282,500
$18.55
$5.24M
Steven Chu
10 Mar 2026
Director
Sold after exercise
166,632
$17.92
$2.99M
Constantin Ionel Stefan
28 Jan 2026
Chief Technology Officer
Sold after exercise
39,690
$12.00
$476.35K
Constantin Ionel Stefan
23 Jan 2026
Chief Technology Officer
Sold after exercise
1,600
$12.00
$19.20K
Constantin Ionel Stefan
22 Jan 2026
Chief Technology Officer
Sold after exercise
492,827
$12.04
$5.93M
Constantin Ionel Stefan
21 Jan 2026
Chief Technology Officer
Sold after exercise
73,280
$12.00
$879.41K
Kang Sun
20 Jan 2026
Director
Sold after exercise
43,185
$11.03
$476.27K
Kang Sun
16 Jan 2026
Director
Sold after exercise
950,548
$11.07
$10.52M
Kang Sun
12 Jan 2026
Director
Sold after exercise
506,267
$10.10
$5.11M
Constantin Ionel Stefan
11 Dec 2025
Chief Technology Officer
Sold after exercise
198,255
$10.51
$2.08M
Kang Sun
17 Nov 2025
Chief Executive Officer
Sold after exercise
1,000,000
$10.60
$10.60M
Jonathan Bornstein
2 Apr 2024
President of Amprius Lab
Sold after exercise
125,983
$2.38
$299.61K
Jonathan Bornstein
6 Mar 2024
President of Amprius Lab
Sold after exercise
40,200
$2.78
$111.58K
Jonathan Bornstein
5 Mar 2024
President of Amprius Lab
Sold after exercise
109,800
$2.92
$320.46K
Jonathan Bornstein
6 Feb 2024
President of Amprius Lab
Sold after exercise
150,000
$4.43
$663.81K
Jonathan Bornstein
2 Jan 2024
President of Amprius Lab
Sold after exercise
25,366
$5.05
$128.08K
Jonathan Bornstein
2 Jan 2024
President of Amprius Lab
Sold after exercise
124,634
$4.32
$538.18K
Jonathan Bornstein
7 Dec 2023
President of Amprius Lab
Sold after exercise
54,477
$3.88
$211.34K
Jonathan Bornstein
6 Dec 2023
President of Amprius Lab
Sold after exercise
47,767
$4.02
$192.24K
Jonathan Bornstein
5 Dec 2023
President of Amprius Lab
Sold after exercise
47,756
$4.28
$204.50K
Jonathan Bornstein
20 Nov 2023
President of Amprius Lab
Sold after exercise
27,631
$3.84
$106.11K
Jonathan Bornstein
9 Nov 2023
President of Amprius Lab
Sold after exercise
49,508
$2.82
$139.65K
Jonathan Bornstein
8 Nov 2023
President of Amprius Lab
Sold after exercise
48,052
$3.05
$146.66K
Jonathan Bornstein
7 Nov 2023
President of Amprius Lab
Sold after exercise
24,809
$3.24
$80.42K
Jonathan Bornstein
12 Oct 2023
President of Amprius Lab
Sold after exercise
22,969
$3.90
$89.69K
Jonathan Bornstein
11 Oct 2023
President of Amprius Lab
Sold after exercise
56,702
$4.16
$236.16K
Jonathan Bornstein
10 Oct 2023
President of Amprius Lab
Sold after exercise
70,329
$4.36
$306.54K
Jonathan Bornstein
20 Sep 2023
President of Amprius Lab
Sold after exercise
6,484
$4.23
$27.40K
Jonathan Bornstein
19 Sep 2023
President of Amprius Lab
Sold after exercise
143,516
$4.37
$627.16K
Show all 127 transactions →

What was left out

Form 4 filings counted 124
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 35
Sales at will 87
Transactions with no price 0
Shares from compensation/vesting 129,066,266
History held since 16 Sep 2022