Amprius Technologies, Inc.

By person

15 insiders · 127 transactions

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

Sun Kang

Director

—

$58.50M (20) scheduled

−$58.50M

1,274,803

0.8727%

$12.79M

—

Stefan Constantin Ionel

Chief Technology Officer

—

$11.24M (19) scheduled

−$11.24M

771,629

0.5282%

$7.74M

+1,357%

HSIEH Wen Hsuan

Director

—

$7.62M (2) scheduled

−$7.62M

44,444

0.0304%

$445.77K

—

Chu Steven

Director

—

$5.86M (4) scheduled

−$5.86M

137,762

0.0943%

$1.38M

+5,410%

MIRRO JUSTIN E

Director

—

$5.06M (32)

−$5.06M

1,337,895

0.9159%

$13.42M

+12.0%

Bornstein Jonathan

President of Amprius Lab

—

$4.84M (25) scheduled

−$4.84M

1,463,618

1.00%

$14.68M

+1,205%

DIXON DONALD R

Director

—

$2.54M (3)

−$2.54M

639,459

0.4377%

$6.41M

+9.4%

Stepien Thomas M

Chief Executive Officer

—

$1.34M (5)

−$1.34M

616,010

0.4217%

$6.18M

+6,060%

Amprius, Inc. entity

10% owner

—

$1.09M (5)

−$1.09M

2,500,071

1.71%

$25.08M

−96.2%

Wallach Sandra

Chief Financial Officer

—

$394.67K (7)

−$394.67K

1,005,275

0.6882%

$10.08M

—

RODRIGUEZ RICARDO C.

Chief Financial Officer

—

350,000

0.2396%

$3.51M

—

SATTERTHWAITE LIVINGSTON

Director

—

346,506

0.2372%

$3.48M

+3,920%

BAYLESS KATHLEEN A

Director

—

216,120

0.1479%

$2.17M

—

Gustanski Mary

Director

—

146,396

0.1002%

$1.47M

—

Kensington Capital Sponsor IV LLC entity

Former 10% holder (see ftn 2)

—

0.0000%

$0.00

−100.0%

Individual transactions

Insider

Date

Role

Action

Price

Amount

Stefan Constantin Ionel

14 Mar 2025

Chief Technology Officer

Exercised, kept

3,471

$0.98

$3.40K

Bornstein Jonathan

10 Mar 2025

President of Amprius Lab

Exercised, kept

3,471

$0.98

$3.40K

Bornstein Jonathan

12 Apr 2024

President of Amprius Lab

Exercised, kept

1,007,867

$0.05

$50.39K

Stefan Constantin Ionel

9 Sep 2023

Chief Technology Officer

Exercised, kept

80,000

$0.05

$4.00K

Stefan Constantin Ionel

14 Dec 2022

Chief Technology Officer

Exercised, kept

30,000

$0.05

$1.50K

Show all 127 transactions →

Amprius Technologies, Inc.

By person

Individual transactions

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