AMPX - NYSE
Amprius Technologies, Inc.
$21.74
-0.82%Amprius Technologies, Inc. manufactures and distributes lithium-ion batteries. Its products include silicon nanowire anode lithium-ion batteries. The company serves the aerospace, defense, and electric vehicle industries. Amprius Technologies, Inc. was incorporated in 2008 and is headquartered in Fremont, California.
At a Glance
Live SnapshotAmprius Technologies, Inc. Management Team
Dr. Kang Sun Ph.D.
Chief Executive Officer & Director
Compensation
$1,248,600
Ms. Sandra Wallach
Chief Financial Officer & Secretary
Compensation
$744,751
Dr. Constantin Ionel Stefan
Chief Technology Officer
Compensation
$299,700
Mr. Thomas Michael Stepien
President & Director
Mr. Scott Zafiropoulo
Senior Director of Marketing
Ms. Siyu Jiang
Vice President of Legal Affairs
Mr. Ronnie Tao
Vice President of Sales
Amprius Technologies, Inc. Insider Positioning
During the last 12 months, insiders have sold $71.11M worth of AMPX shares, with no buying activity reported.
3 Months
0
0.00
2.0M
32.42M
-32.4M
-$32.42M
3-6 Months
0
0.00
2.4M
26.38M
-26.4M
-$26.38M
6-9 Months
0
0.00
1.1M
11.54M
-11.5M
-$11.54M
9-12 Months
0
0.00
113.2K
771.61K
-772K
-$772K
Top Buyers
No buying activity
Top Sellers
Sun Kang
Director
$52.01M
Stefan Constantin Ionel
Officer: Chief Technology Officer
$10.51M
Hsieh Wen Hsuan
Director
$5.24M
Chu Steven
Director
$1.86M
Stepien Thomas M
Director, Officer: Chief Executive Officer
$973K
Insider Activity Analysis
Net Insider Sentiment
Strong bearish signal with $71.11M net selling. Heavy insider selling may indicate concerns about valuation or near-term prospects.
Buy/Sell Ratio
Very poor ratio. Heavy selling with minimal buying suggests insiders may be concerned about valuation or outlook.
Recent Trend (3 Months)
Heavy recent selling activity. Recent insider sales notably exceed purchases—may warrant investigation into company developments.
Insider Participation
5 insider sellers vs. 0 buyers. Widespread selling across multiple insiders may signal concerns.
Insider Activity Insight
Multiple red flags: Heavy selling, numerous sellers, and continued recent selling create a concerning pattern. Investigate fundamental drivers and consider whether company guidance or industry conditions have deteriorated.
SEC Filings
AMPX - Filing history and reports
| Filing Type | Filing Date | Period Ending | Fiscal Year | Actions |
|---|---|---|---|---|
DEF 14A DEF 14A 2026 N/A | April 29, 2026 | June 11, 2026 | 2026 | |
DEF 14A DEF 14A 2025 N/A | April 25, 2025 | June 12, 2025 | 2025 | |
DEF 14A DEF 14A 2024 N/A | April 25, 2024 | June 06, 2024 | 2024 | |
DEF 14A DEF 14A 2023 N/A | April 27, 2023 | June 08, 2023 | 2023 |
Research Paths
Snapshot
Start with context, operating signals, and key market metrics.
Value Model
Stress test fair value across bear, base, and bull assumptions.
Statements
Validate revenue quality, margins, and balance sheet durability.
Earnings Call
Read management commentary and compare it with reported outcomes.
Dividends
Check payout sustainability and long-term distribution behavior.
Analyst Expectations
Review consensus spread and where estimate risk is concentrated.