Arkolith/Insider Trading/AMPX/Form 4

Stefan Constantin Ionel

Chief Technology OfficerAmprius Technologies, Inc. (AMPX) · full profile →Form 4 · filed Jan 30, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$476K
Net Open-Market Flow
-$476K
Transactions
5
3 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jan 28, 2026Option exercise(M)40K$0.05$2K788K
Jan 28, 2026Option exercise(M)90$0.62$56749K
Jan 28, 2026Sell(S)40K$12.00$476K749K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jan 28, 2026Option exercise(M)90—$00
Jan 28, 2026Option exercise(M)40K—$00

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001940928-26-000004) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML