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AMPXNYSE

Amprius Technologies, Inc.

Alert me on AMPX
0
Insider buys, 6 months
0
Congress trades, 6 months
0
Signals, 6 months

Six months

AMPX stock chart by TradingView

After each filing

27
Aug 26 Sale Sun Kang Insider
1 week
−6.7%S&P −0.1%
1 month
−4.4%S&P +0.9%
3 months
Result in11 trading days
6 months
Result in74 trading days
Aug 26 Sale Stefan Constantin Ionel Insider
1 week
−6.7%S&P −0.1%
1 month
−4.4%S&P +0.9%
3 months
Result in11 trading days
6 months
Result in74 trading days
Aug 26 Sale Stepien Thomas M Insider
1 week
−6.7%S&P −0.1%
1 month
−4.4%S&P +0.9%
3 months
Result in11 trading days
6 months
Result in74 trading days
Jun 17 Sale DIXON DONALD R Insider
1 week
−16.3%S&P −0.6%
1 month
−32.4%S&P +0.4%
3 months
−36.4%S&P +3.2%
6 months
Result in26 trading days
Jun 12 Sale DIXON DONALD R Insider
1 week
−4.0%S&P +0.6%
1 month
−30.5%S&P +2.0%
3 months
−43.8%S&P +2.8%
6 months
Result in23 trading days
Show all 27
Jun 6 Sale Stepien Thomas M Insider
1 week
−10.7%S&P +2.1%
1 month
−36.9%S&P +1.9%
3 months
−44.8%S&P +3.9%
6 months
Result in19 trading days
May 29 Sale Stepien Thomas M Insider
1 week
−2.9%S&P −2.5%
1 month
−31.7%S&P −1.0%
3 months
−51.2%S&P +2.0%
6 months
Result in13 trading days
May 29 Sale Sun Kang Insider
1 week
−2.9%S&P −2.5%
1 month
−31.7%S&P −1.0%
3 months
−51.2%S&P +2.0%
6 months
Result in13 trading days
May 29 Sale DIXON DONALD R Insider
1 week
−2.9%S&P −2.5%
1 month
−31.7%S&P −1.0%
3 months
−51.2%S&P +2.0%
6 months
Result in13 trading days
May 29 Sale Stefan Constantin Ionel Insider
1 week
−2.9%S&P −2.5%
1 month
−31.7%S&P −1.0%
3 months
−51.2%S&P +2.0%
6 months
Result in13 trading days
May 27 Sale Sun Kang Insider
1 week
+26.7%S&P +0.5%
1 month
−24.8%S&P −2.6%
3 months
−40.6%S&P +2.3%
6 months
Result in11 trading days
May 27 Sale Stefan Constantin Ionel Insider
1 week
+26.7%S&P +0.5%
1 month
−24.8%S&P −2.6%
3 months
−40.6%S&P +2.3%
6 months
Result in11 trading days
May 27 Sale Stepien Thomas M Insider
1 week
+26.7%S&P +0.5%
1 month
−24.8%S&P −2.6%
3 months
−40.6%S&P +2.3%
6 months
Result in11 trading days
Apr 3 Sale Sun Kang Insider
1 week
+4.7%S&P +4.1%
1 month
+21.9%S&P +9.8%
3 months
−33.3%S&P +13.8%
6 months
−46.2%S&P +18.2%
Mar 25 Sale Sun Kang Insider
1 week
−13.4%S&P −0.2%
1 month
+15.2%S&P +8.7%
3 months
−29.9%S&P +12.1%
6 months
−46.0%S&P +17.4%
Mar 14 Sale HSIEH Wen Hsuan Insider
1 week
−0.1%S&P −1.8%
1 month
−2.1%S&P +4.9%
3 months
−10.0%S&P +13.1%
6 months
−51.0%S&P +13.8%
Mar 13 Sale Chu Steven Insider
1 week
+1.4%S&P −1.8%
1 month
−0.3%S&P +5.1%
3 months
−9.1%S&P +12.3%
6 months
−48.9%S&P +15.5%
Feb 25 Sale Stefan Constantin Ionel Insider
1 week
+13.5%S&P −1.2%
1 month
+55.2%S&P −6.7%
3 months
+55.2%S&P +8.6%
6 months
−7.8%S&P +11.1%
Feb 25 Sale Sun Kang Insider
1 week
+13.5%S&P −1.2%
1 month
+55.2%S&P −6.7%
3 months
+55.2%S&P +8.6%
6 months
−7.8%S&P +11.1%
Jan 31 Sale Stefan Constantin Ionel Insider
1 week
−5.0%S&P −0.2%
1 month
−4.6%S&P −1.5%
3 months
+55.0%S&P +3.5%
6 months
−17.8%S&P +11.5%
Jan 24 Sale Stefan Constantin Ionel Insider
1 week
+20.6%S&P +0.4%
1 month
+1.5%S&P +0.1%
3 months
+96.5%S&P +3.5%
6 months
−16.2%S&P +7.5%
Jan 21 Sale Sun Kang Insider
1 week
+6.3%S&P +1.5%
1 month
−15.5%S&P +0.6%
3 months
+101.3%S&P +4.1%
6 months
−12.1%S&P +8.3%
Jan 15 Sale Sun Kang Insider
1 week
+10.0%S&P −0.4%
1 month
−3.7%S&P −1.4%
3 months
+83.9%S&P +2.9%
6 months
−0.1%S&P +7.8%
Dec 16, 2025 Sale Stefan Constantin Ionel Insider
1 week
−15.2%S&P +1.6%
1 month
+7.0%S&P +2.2%
3 months
+85.9%S&P −2.5%
6 months
+57.3%S&P +10.9%
Nov 26, 2025 Sale Sun Kang Insider
1 week
+13.0%S&P +0.7%
1 month
−26.7%S&P +1.5%
3 months
+7.2%S&P +1.3%
6 months
+101.2%S&P +12.2%
Nov 26, 2025 Sale Stefan Constantin Ionel Insider
1 week
+13.0%S&P +0.7%
1 month
−26.7%S&P +1.5%
3 months
+7.2%S&P +1.3%
6 months
+101.2%S&P +12.2%
Nov 20, 2025 Sale Sun Kang Insider
1 week
+9.9%S&P +4.7%
1 month
−11.9%S&P +5.3%
3 months
+4.9%S&P +5.6%
6 months
+73.1%S&P +15.7%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for AMPX

71 held · newest 571 held · newest 2
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See all 71 filings for AMPX

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Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal
No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters
$40KQ4 2025
$60KQ1 2026
$60KQ2 2026
$60KQ3 2026
Unchanged from Q2 2026. Reported to the Senate each quarter by the firms it hires.Original report ↗

Read from LDA.gov between Sep 23, 2026 and Oct 16, 2026. Senate Office of Public Records cannot vouch for the data or analyses derived from these data after the data have been retrieved from LDA.gov.