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CIK 0001899287 · <br>Emerging growth company

Amprius Technologies, Inc.

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Ticker
AMPX
Exchange
NYSE
Industry
Miscellaneous Electrical Machinery, Equipment & Supplies
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
981591811
Phone
(800) 425-8803
Business address
1180 PAGE AVENUE, FREMONT, CA, 94538
Former names
Kensington Capital Acquisition Corp. IV

Securities

  • AMPX Amprius Technologies, Inc. Common Stock NYSE
  • AMPX-WT Warrants NYSE
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$1,272,671
in 3 filings

Net −$1,272,671. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Sun Kang −$642K Director sold 5% of stake
  2. Stepien Thomas M −$324K Chief Executive Officer sold 5% of stake
  3. Stefan Constantin Ionel −$307K Chief Technology Officer sold 4% of stake
Date Insider Transaction Shares Price Value Owned after
2026-03-12 Chu Steven Director Option exercise +69,422 $0.62 $43K 282,904
2026-03-12 Chu Steven Director Sale −100,000 $18.65 $1.9M 182,904
2026-03-12 Chu Steven Director Sale −50,000 $18.21 $911K 132,904
2026-03-12 Chu Steven Director Sale −5,565 $18.53 $103K 127,339
2026-03-12 Chu Steven Director Option exercise · Stock Option (right to buy) −86,143 $2.61 $225K 184,108
2026-03-12 Chu Steven Director Option exercise · Stock Option (right to buy) −69,422 $0.62 $43K 0
2026-03-10 Chu Steven Director Option exercise +104,132 $0.62 $65K 293,971
2026-03-10 Chu Steven Director Sale −166,632 $17.92 $3.0M 127,339
2026-03-10 Chu Steven Director Option exercise · Stock Option (right to buy) −104,132 $0.62 $65K 69,422
2026-03-04 RODRIGUEZ RICARDO C. Chief Financial Officer Grant or award +150,000 350,000
2026-03-04 Stepien Thomas M Chief Executive Officer Grant or award +150,000 760,000
2026-03-04 Stefan Constantin Ionel Chief Technology Officer Grant or award +110,000 833,330
2026-03-04 RODRIGUEZ RICARDO C. Chief Financial Officer Grant or award +150,000 350,000
2026-02-23 Stefan Constantin Ionel Chief Technology Officer Sale −25,366 $10.16 $258K 723,330
2026-02-23 Sun Kang Director Sale −61,251 $10.16 $622K 1,342,400
2026-01-28 Stefan Constantin Ionel Chief Technology Officer Option exercise +90 $0.62 $56 748,786
2026-01-28 Stefan Constantin Ionel Chief Technology Officer Option exercise +39,600 $0.05 $2K 788,386
2026-01-28 Stefan Constantin Ionel Chief Technology Officer Sale −39,690 $12.00 $476K 748,696
2026-01-28 Stefan Constantin Ionel Chief Technology Officer Option exercise · Stock Option (right to buy) −90 0
2026-01-28 Stefan Constantin Ionel Chief Technology Officer Option exercise · Stock Option (right to buy) −39,600 0

Page 3 of 16 · 317 trades