Insider Transactions Reported by 25 Insiders of Amprius Technologies, Inc.

Symbol
AMPX, AMPX-WT on NYSE
Location
Fremont, CA

Insiders trading volume in the past year

Amprius Technologies, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Kang Sun Director $17,357,397 -$28,633,114 -62% 23 Feb 2026
Constantin Ionel Stefan Chief Technology Officer $9,624,961 -$10,080,258 -51% 04 Mar 2026
Thomas M. Stepien Chief Executive Officer, Director $8,778,000 04 Mar 2026
Sandra Wallach Chief Financial Officer $6,852,155 -$260,623 -3.7% 21 Aug 2025
Ricardo C. Rodriguez Chief Financial Officer $4,042,500 04 Mar 2026
Steven Chu Director $2,360,177 -$5,863,984 -71% 10 Mar 2026
Amprius, Inc. 10%+ Owner $2,012,807 23 Oct 2024
Donald R. Dixon Director $1,945,266 13 Jun 2025
Justin E. Mirro Director $1,077,140 03 Sep 2024
Livingston Satterthwaite Director $846,929 13 Jun 2025
Wen Hsuan Hsieh Director $809,911 -$7,620,033 -90% 12 Mar 2026
Kathleen A. Bayless Director $518,356 13 Jun 2025
Jonathan Bornstein President of Amprius Lab $414,215 10 Mar 2025
Mary E. Gustanski Director $198,513 07 Jun 2024
Kensington Capital Sponsor IV LLC Other* 14 Sep 2022
Robert J. Remenar Under Power Chief Operating Officer 01 Mar 2022
Thomas William LaSorda Director 01 Mar 2022
Donald L. Runkle Director 01 Mar 2022
Matthew J. Simoncini Director 01 Mar 2022
Mitchell I. Quain Director 01 Mar 2022
Nicole Nason Director 01 Mar 2022
Dieter Zetsche Vice Chairman and President 01 Mar 2022
Anders Pettersson Director 01 Mar 2022
Simon Boag Chief Technology Officer 01 Mar 2022
Daniel Elliot Huber Chief Financial Officer 01 Mar 2022

Recent Insider Transactions by Companies or Individuals for Amprius Technologies, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Wen Hsuan Hsieh AMPX Common stock Sale -90.3% $7,620,033 $18.44 -413,146 44,444 12 Mar 2026 Direct
Wen Hsuan Hsieh AMPX Common stock Options Exercise 144.3% 270,251 457,590 12 Mar 2026 Direct
Wen Hsuan Hsieh AMPX Stock Option (right to buy) Options Exercise -100% -270,251 0 12 Mar 2026 Direct
Steven Chu AMPX Common stock Sale -55% $2,878,555 $18.50 -155,565 127,339 12 Mar 2026 Direct
Steven Chu AMPX Common stock Options Exercise 122.2% 155,565 282,904 12 Mar 2026 Direct
Steven Chu AMPX Stock Option (right to buy) Options Exercise -100% -155,565 0 12 Mar 2026 Direct
Steven Chu AMPX Common stock Sale -56.7% $2,985,429 $17.92 -166,632 127,339 10 Mar 2026 Direct
Steven Chu AMPX Common stock Options Exercise 54.8% 104,132 293,971 10 Mar 2026 Direct
Steven Chu AMPX Stock Option (right to buy) Options Exercise -60% -104,132 69,422 10 Mar 2026 Direct
Ricardo C. Rodriguez AMPX Common stock Award 75% 150,000 350,000 04 Mar 2026 Direct
Thomas M. Stepien AMPX Common stock Award 24.6% 150,000 760,000 04 Mar 2026 Direct
Constantin Ionel Stefan AMPX Common stock Award 15.2% 110,000 833,330 04 Mar 2026 Direct
Kang Sun AMPX Common stock Sale -4.36% $622,035 $10.16 -61,251 1,342,400 23 Feb 2026 Direct
Constantin Ionel Stefan AMPX Common stock Sale -3.39% $257,604 $10.16 -25,366 723,330 23 Feb 2026 Direct
Constantin Ionel Stefan AMPX Common stock Sale -5.03% $476,351 $12.00 -39,690 748,696 28 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Options Exercise 5.3% 39,690 788,386 28 Jan 2026 Direct
Constantin Ionel Stefan AMPX Stock Option (right to buy) Options Exercise -100% -39,690 0 28 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Sale -0.21% $19,200 $12.00 -1,600 748,696 23 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Options Exercise 0.21% 1,600 750,296 23 Jan 2026 Direct
Constantin Ionel Stefan AMPX Stock Option (right to buy) Options Exercise -3.88% -1,600 39,600 23 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Sale -39.7% $5,931,912 $12.04 -492,827 748,696 22 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Options Exercise 65.8% 492,827 1,241,523 22 Jan 2026 Direct
Constantin Ionel Stefan AMPX Stock Option (right to buy) Options Exercise -100% -492,827 0 22 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Sale -8.92% $879,411 $12.00 -73,280 748,696 21 Jan 2026 Direct
Constantin Ionel Stefan AMPX Common stock Options Exercise 9.79% 73,280 821,976 21 Jan 2026 Direct
Constantin Ionel Stefan AMPX Stock Option (right to buy) Options Exercise -99.9% -73,280 90 21 Jan 2026 Direct
Kang Sun AMPX Common stock Sale -2.98% $476,274 $11.03 -43,185 1,403,651 20 Jan 2026 Direct
Kang Sun AMPX Common stock Options Exercise 3.08% 43,185 1,446,836 20 Jan 2026 Direct
Kang Sun AMPX Stock Option (right to buy) Options Exercise -3.19% -43,185 1,312,505 20 Jan 2026 Direct
Kang Sun AMPX Common stock Sale -40.4% $10,518,669 $11.07 -950,548 1,403,651 16 Jan 2026 Direct
Kang Sun AMPX Common stock Options Exercise 67.7% 950,548 2,354,199 16 Jan 2026 Direct
Kang Sun AMPX Stock Option (right to buy) Options Exercise -100% -950,548 0 16 Jan 2026 Direct
Kang Sun AMPX Common stock Sale -26.5% $5,111,474 $10.10 -506,267 1,403,651 12 Jan 2026 Direct
Kang Sun AMPX Common stock Options Exercise 36.1% 506,267 1,909,918 12 Jan 2026 Direct
Kang Sun AMPX Stock Option (right to buy) Options Exercise -100% -506,267 0 12 Jan 2026 Direct
Thomas M. Stepien AMPX Common stock Award 48.8% 200,000 610,000 19 Dec 2025 Direct
Constantin Ionel Stefan AMPX Common stock Sale -20.9% $2,083,382 $10.51 -198,255 748,696 11 Dec 2025 Direct
Constantin Ionel Stefan AMPX Common stock Options Exercise 15.2% 125,000 946,951 11 Dec 2025 Direct
Constantin Ionel Stefan AMPX Stock Option (right to buy) Options Exercise -28.7% -125,000 310,962 11 Dec 2025 Direct
Constantin Ionel Stefan AMPX Common stock Sale -2.95% $252,274 $10.08 -25,024 821,951 21 Nov 2025 Direct
Kang Sun AMPX Common stock Sale -4.66% $692,132 $10.08 -68,655 1,403,651 21 Nov 2025 Direct
Kang Sun AMPX Common stock Sale -40.4% $10,595,300 $10.60 -1,000,000 1,472,306 17 Nov 2025 Direct
Kang Sun AMPX Common stock Options Exercise 67.9% 1,000,000 2,472,306 17 Nov 2025 Direct
Kang Sun AMPX Stock Option (right to buy) Options Exercise -100% -1,000,000 0 17 Nov 2025 Direct
Ricardo C. Rodriguez AMPX Common stock Award 200,000 200,000 06 Oct 2025 Direct
Constantin Ionel Stefan AMPX Common stock Sale -2.21% $130,592 $6.82 -19,159 846,975 21 Aug 2025 Direct
Sandra Wallach AMPX Common stock Sale -2.75% $193,512 $6.82 -28,390 1,005,275 21 Aug 2025 Direct
Kang Sun AMPX Common stock Sale -4.27% $447,511 $6.82 -65,654 1,472,306 21 Aug 2025 Direct
Wen Hsuan Hsieh AMPX Common stock Award 31.1% 44,444 187,339 13 Jun 2025 Direct
Donald R. Dixon AMPX Common stock Award 12.7% 44,444 394,656 13 Jun 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.