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Amprius Technologies, Inc.

AMPX Net selling
CIK 0001899287 #2254 in the set updated 21 Sep 2026
Bought (1 mo)
$0.00
out of their own pocket, the only kind of buying there is
Sold (1 mo)
$80.24K
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$80.24K
1 of 1 sales
Net
−$80.24K
−$80.24K against sales at will

By person

12 insiders · 1 transaction
19.3×

Thomas M. Stepien holds 19.3 times base salary in stock. $6.18M of shares against $319.71K in salary for 2025.

Salary from the company's own proxy. The shares are what Thomas M. Stepien last reported holding, valued at $10.03, the price Common stock was last bought or sold at on the open market here, on 24 Aug 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Stepien Thomas M
Chief Executive Officer
—
$80.24K (1)
−$80.24K
616,010
0.4217%
$6.18M
+6,060%
Amprius, Inc. entity
10% owner
—
—
—
2,500,071
1.71%
$25.08M
−96.2%
Bornstein Jonathan
President of Amprius Lab
—
—
—
1,463,618
1.00%
$14.68M
−10.8%
Sun Kang
Director
—
—
—
1,274,803
0.8727%
$12.79M
−5.6%
Wallach Sandra
Chief Financial Officer
—
—
—
1,005,275
0.6882%
$10.08M
+40.9%
Stefan Constantin Ionel
Chief Technology Officer
—
—
—
771,629
0.5282%
$7.74M
+75.7%
DIXON DONALD R
Director
—
—
—
639,459
0.4377%
$6.41M
−12.1%
RODRIGUEZ RICARDO C.
Chief Financial Officer
—
—
—
350,000
0.2396%
$3.51M
—
SATTERTHWAITE LIVINGSTON
Director
—
—
—
346,506
0.2372%
$3.48M
+18.8%
BAYLESS KATHLEEN A
Director
—
—
—
216,120
0.1479%
$2.17M
+34.0%
Chu Steven
Director
—
—
—
137,762
0.0943%
$1.38M
−5.2%
HSIEH Wen Hsuan
Director
—
—
—
44,444
0.0304%
$445.77K
−68.9%

Individual transactions

0

Nothing of that kind in this period.

What was left out

Form 4 filings counted 3
Amendments (4/A) skipped 0
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 0
Sales at will 1
Transactions with no price 0
Shares from compensation/vesting 15,692
History held since 16 Sep 2022