Constantin Ionel Stefan

Chief Technology Officer, Amprius Technologies, Inc.

Bought, 12 months

$0.0M

Sold, 12 months

$10.7M

Companies

Latest trade

Aug 21, 2026

Companies

Amprius Technologies, Inc.Chief Technology Officer −$10.7M

Trades

AMPX Sold 29,681 shares at $10.34 $0.3M Aug 21

AMPX Sold 3,208 shares at $17.19 $0.1M May 27

AMPX Sold 28,812 shares at $14.79 $0.4M May 21

AMPX Sold 25,366 shares at $10.16 $0.3M Feb 23

AMPX Sold 39,690 shares at $12.00 · planned $0.5M Jan 28

AMPX Sold 1,600 shares at $12.00 · planned $0.0M Jan 23

AMPX Sold 492,827 shares at $12.04 · planned $5.9M Jan 22

AMPX Sold 73,280 shares at $12.00 · planned $0.9M Jan 21

AMPX Sold 198,255 shares at $10.51 · planned $2.1M Dec 11

AMPX Sold 25,024 shares at $10.08 $0.3M Nov 21

Open-market trades from SEC Form 4 only: no grants, option exercises or gifts. People are matched by the name on their filings, so two people with the same name share this page. For information only — not investment advice.