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$AMPX All transactions

Amprius Technologies, Inc.

▼ SELL 10b5-1 Plan

$ Value

$2.1M

Shares

198,255

Price

$11

Filed

Dec 15

Insider

Name

Stefan Constantin Ionel

Title

Chief Technology Officer

CIK

0001940928

Roles

Officer

Transaction Details

Transaction Date

2025-12-11

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

748,696

Footnotes

The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. | Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. | The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.14 to $11.49, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

Filing Info

Accession No.

0001940928-25-000020

Form Type

4

Issuer CIK

0001899287

Stefan Constantin Ionel's History

Date Ticker Type Value
2026-03-04 AMPX A $0
2026-02-23 AMPX $258K
2026-01-28 AMPX M $56
2026-01-28 AMPX M $2K
2026-01-28 AMPX $476K
2026-01-28 AMPX M $0
2026-01-28 AMPX M $0
2026-01-23 AMPX M $80
2026-01-23 AMPX $19K
2026-01-23 AMPX M $0

Other Insiders at AMPX (90d)

Insider Bought Sold Last
Sun Kang $28.6M 2026-04-01
RODRIGUEZ RICARDO C.
Chief Financial Officer
2026-03-04
Stefan Constantin Ionel
Chief Technology Officer
$734K 2026-03-04
Stepien Thomas M
Chief Executive Officer
2026-03-04