Free Trial
→ July 2025 Rule Change to Impact Retirement Investors (From Premier Gold Co) (Ad) Buy AMPX Stock  Free AMPX Stock Alerts

Amprius Technologies (AMPX) SEC Filings & 10K Form

Amprius Technologies logo
$2.81 +0.10 (+3.69%)
Closing price 03:59 PM Eastern
Extended Trading
$2.90 +0.09 (+3.02%)
As of 07:57 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
Compare

Recent Amprius Technologies SEC Filings

Export to Excel
DateFilerForm TypeView
05/23/2025
4:54 PM		Amprius Technologies (Issuer)
Stefan Constantin Ionel (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
05/23/2025
4:43 PM		Amprius Technologies (Subject)
Sun Kang (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/23/2025
4:44 PM		Amprius Technologies (Subject)
Wallach Sandra (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/23/2025
4:46 PM		Amprius Technologies (Subject)
Stefan Constantin Ionel (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/23/2025
4:48 PM		Amprius Technologies (Issuer)
Sun Kang (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
05/23/2025
4:51 PM		Amprius Technologies (Issuer)
Wallach Sandra (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
05/15/2025
4:33 PM		Amprius Technologies (Subject)
SAIF Partners IV L.P. (Filed by)
Form SCHEDULE 13G/A
05/12/2025
5:08 PM		Amprius Technologies (Issuer)
Stepien Thomas M (Reporting)
Form 3/A
05/08/2025
4:13 PM		Amprius Technologies (Filer)
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
05/06/2025
7:11 PM		Amprius Technologies (Issuer)
Stepien Thomas M (Reporting)
Form 3
Initial statement of beneficial ownership of securities  
05/06/2025
7:12 PM		Amprius Technologies (Issuer)
Stepien Thomas M (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/23/2025
7:40 AM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/21/2025
3:55 PM		Amprius Technologies (Issuer)
Stefan Constantin Ionel (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
03/21/2025
3:57 PM		Amprius Technologies (Issuer)
Wallach Sandra (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
03/21/2025
4:03 PM		Amprius Technologies (Issuer)
Sun Kang (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
03/20/2025
4:20 PM		Amprius Technologies (Filer)
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
03/20/2025
3:08 PM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/18/2025
4:07 PM		Amprius Technologies (Issuer)
Stefan Constantin Ionel (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
03/12/2025
4:14 PM		Amprius Technologies (Issuer)
Bornstein Jonathan (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2025
6:36 PM		Amprius Technologies (Subject)
Sun Kang (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/24/2025
6:37 PM		Amprius Technologies (Issuer)
Bornstein Jonathan (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2025
6:38 PM		Amprius Technologies (Issuer)
Stefan Constantin Ionel (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2025
6:40 PM		Amprius Technologies (Issuer)
Wallach Sandra (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2025
6:42 PM		Amprius Technologies (Issuer)
Sun Kang (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
02/24/2025
6:27 PM		Amprius Technologies (Subject)
Wallach Sandra (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/24/2025
6:29 PM		Amprius Technologies (Subject)
Bornstein Jonathan (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
02/24/2025
6:31 PM		Amprius Technologies (Subject)
Stefan Constantin Ionel (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
12/09/2024
4:28 PM		Amprius Technologies (Filer)
Form 424B7
11/22/2024
3:27 PM		Amprius Technologies (Issuer)
Bornstein Jonathan (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/22/2024
3:29 PM		Amprius Technologies (Issuer)
Sun Kang (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/21/2024
7:58 PM		Amprius Technologies (Subject)
Bornstein Jonathan (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/21/2024
7:15 PM		Amprius Technologies (Subject)
Wallach Sandra (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/21/2024
7:16 PM		Amprius Technologies (Subject)
Sun Kang (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/21/2024
7:24 PM		Amprius Technologies (Subject)
Stefan Constantin Ionel (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/21/2024
4:11 PM		Amprius Technologies (Subject)
Bornstein Jonathan (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/07/2024
4:04 PM		Amprius Technologies (Subject)
Amprius, Inc. (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
11/07/2024
4:06 PM		Amprius Technologies (Filer)
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
10/29/2024
7:40 AM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/25/2024
6:25 PM		Amprius Technologies (Subject)
Amprius, Inc. (Filed by)
Form SC 13D/A
10/25/2024
6:04 PM		Amprius Technologies (Subject)
Sun Kang (Filed by)
Form SC 13D
10/25/2024
6:10 PM		Amprius Technologies (Subject)
SALZMAN ALAN E (Filed by)
Form SC 13G
Elon just did WHAT!? (Ad)

As you may recall, Biden and the Fed were working on a central bank digital currency, or CBDC. Had they gotten away with it, the Fed and U.S. banks could have seized control of our financial lives forever. But Trump stopped them cold on January 23rd, 2025, when he outlawed CBDCs… Paving the way for Elon Musk's secret master plan.

Click here to see how to claim your stake before they launch to avoid missing out.
10/25/2024
5:28 PM		Amprius Technologies (Issuer)
Amprius, Inc. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/25/2024
5:30 PM		Amprius Technologies (Issuer)
Chu Steven (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/25/2024
5:32 PM		Amprius Technologies (Issuer)
Sun Kang (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/25/2024
5:33 PM		Amprius Technologies (Issuer)
Stefan Constantin Ionel (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/25/2024
5:34 PM		Amprius Technologies (Issuer)
Bornstein Jonathan (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/25/2024
4:48 PM		Amprius Technologies (Subject)
MIRRO JUSTIN E (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
10/23/2024
4:23 PM		Amprius Technologies (Filer)
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
10/23/2024
3:45 PM		Amprius Technologies (Filer)
Form 424B7
10/23/2024
3:24 PM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/20/2024
4:04 PM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/12/2024
3:06 PM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/05/2024
6:14 PM		Amprius Technologies (Issuer)
Amprius, Inc. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
09/05/2024
6:16 PM		Amprius Technologies (Issuer)
MIRRO JUSTIN E (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
09/04/2024
8:52 PM		Amprius Technologies (Subject)
MIRRO JUSTIN E (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
09/03/2024
4:17 PM		Amprius Technologies (Subject)
Amprius, Inc. (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
08/22/2024
4:02 PM		Amprius Technologies (Issuer)
Sun Kang (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/22/2024
4:04 PM		Amprius Technologies (Issuer)
Bornstein Jonathan (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/22/2024
4:06 PM		Amprius Technologies (Issuer)
Wallach Sandra (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/22/2024
3:49 PM		Amprius Technologies (Subject)
Bornstein Jonathan (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
08/22/2024
3:51 PM		Amprius Technologies (Subject)
Sun Kang (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
08/22/2024
3:52 PM		Amprius Technologies (Subject)
Wallach Sandra (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
08/22/2024
3:53 PM		Amprius Technologies (Subject)
Stefan Constantin Ionel (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
08/22/2024
3:57 PM		Amprius Technologies (Issuer)
Stefan Constantin Ionel (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/14/2024
4:32 PM		Amprius Technologies (Issuer)
SATTERTHWAITE LIVINGSTON (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/14/2024
4:27 PM		Amprius Technologies (Issuer)
SATTERTHWAITE LIVINGSTON (Reporting)
Form 3
Initial statement of beneficial ownership of securities  
08/14/2024
4:23 PM		Amprius Technologies (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/25/2024
7:40 PM		Amprius Technologies (Issuer)
MIRRO JUSTIN E (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
07/24/2024
7:51 AM		Amprius Technologies (Subject)
Form SC TO-I/A
07/08/2024
11:15 PM		Amprius Technologies (Filer)
Form EFFECT
07/08/2024
3:45 PM		Amprius Technologies (Filer)
Form 424B3
07/03/2024
5:23 AM		Amprius Technologies (Subject)
Form SC TO-I/A
07/03/2024
5:06 AM		Amprius Technologies (Filer)
Form S-4/A
06/24/2024
4:30 PM		Amprius Technologies (Subject)
Form SC TO-I
06/24/2024
4:04 PM		Amprius Technologies (Filer)
Form S-4
Registration statement under Securities Act of 1933  
06/14/2024
6:44 PM		Amprius Technologies (Issuer)
MIRRO JUSTIN E (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
06/12/2024
7:29 PM		Amprius Technologies (Subject)
Form SC TO-I/A
06/12/2024
7:38 PM		Amprius Technologies (Subject)
MIRRO JUSTIN E (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
06/12/2024
7:39 AM		Amprius Technologies (Subject)
Form SC TO-I/A
06/07/2024
7:41 PM		Amprius Technologies (Issuer)
DIXON DONALD R (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
06/07/2024
7:42 PM		Amprius Technologies (Issuer)
MIRRO JUSTIN E (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
06/07/2024
7:43 PM		Amprius Technologies (Issuer)
Gustanski Mary (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
06/07/2024
7:44 PM		Amprius Technologies (Issuer)
Chu Steven (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
06/07/2024
7:44 PM		Amprius Technologies (Issuer)
BAYLESS KATHLEEN A (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
06/07/2024
7:45 PM		Amprius Technologies (Issuer)
HSIEH Wen Hsuan (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
05/28/2024
7:28 AM		Amprius Technologies (Subject)
Wallach Sandra (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/28/2024
7:22 AM		Amprius Technologies (Subject)
Sun Kang (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/28/2024
7:25 AM		Amprius Technologies (Subject)
Bornstein Jonathan (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/28/2024
7:13 AM		Amprius Technologies (Subject)
Stefan Constantin Ionel (Reporting)
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
(Data available from 1/1/2016 forward)


Related Companies and Tools

Related Companies
SEC Filings Tools

This page (NYSE:AMPX) was last updated on 5/27/2025 by MarketBeat.com Staff
From Our Partners
White House to reset Social Security?
Elon Musk's parting DOGE gift looks set to shock America... A single announcement by July 22nd could soon b...
Altimetry | Sponsored
July 2025 Rule Change to Impact Retirement Investors
There's a massive change from a new rule going into effect this July. And it's one the Big Banks are alread...
Premier Gold Co | Sponsored
Buffett’s favorite chart just hit 209% – here’s what that means for gold
A Historic Gold Announcement Is About to Rock Wall Street For months, sharp-eyed analysts have watched the ...
Golden Portfolio | Sponsored
A grave, grave error.
I thought what happened 25 years ago was a once- in-a-lifetime event… but how wrong I was. Because here we...
Porter & Company | Sponsored
Trump Exec Order 14179 is wealth “gift” to good Americans?
Is President Trump’s Executive Order 14179… A secret way to restore wealth for good citizens? If you’ve ...
Paradigm Press | Sponsored
This Signal Only Flashes Once Every 4 Years – And It Just Triggered
This same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...
Crypto Swap Profits | Sponsored
The one deadline Elon can't afford to miss...
For years, Elon Musk made headlines for blowing past deadlines — so often that investors coined a nickname for...
Brownstone Research | Sponsored
Massive new energy source found in Utah
NEW THIS WEEK: Huge Energy Discovery In Utah The Department of Energy say it could power America for millio...
Stansberry Research | Sponsored