Stefan Constantin Ionel bought AMPX
January 21, 2026 · Form 4 insider transaction
Stefan Constantin Ionel bought 15,834 shares of Amprius Technologies, Inc. at $0.05 per share, a transaction worth $791.70. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Acquired (buy-side)
Shares
15,834
Price
$0.05
Total value
$791.70
InsiderStefan Constantin Ionel
Role—
SecurityCommon stock
Transaction codeM: Option exercise
Transaction dateJanuary 21, 2026
Filing dateJanuary 23, 2026
Shares owned after806,093
OwnershipDirect
10b5-1 planYes
AmendedNo
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.