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Amprius Technologies, Inc. Stock: price and insider trades · United States
Amprius Technologies, Inc.: what insiders have been doing
This page follows insider dealings at Amprius Technologies, Inc. as filed with SEC (Form 4), a company from the Technology sector. Over the twelve months to 18 October 2026, 60 filings were filed, from 13 insiders.
Only sales appear on the open market, 24 sales in all totalling €38.7M, filed by 4 insiders. The amount is not disclosed for 2 filings. The largest single trade was a sale of €17.0M by Sun Kang, published on 2 April 2026.
Filings reach the SEC (Form 4) feed a median of 2 days after the trade. Section 16 rules allow two business days to file each Form 4. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning.
For context, the typical company on the same exchange (median of 5,810 companies) published 19 filings over the same period, against 60 filings here. The full history, which starts in 2022, counts no purchases against 56 sales. In its latest annual report filed with the SEC (10-K, fiscal year ended 31 December 2025), the company reported revenue of 73.0 m USD and net income of -44.0 m USD.
For comparison within the same sector, see the insider buying recorded at Core Scientific, Inc./tx and Gitlab Inc. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.
Insider Decl.
139
Thresholds
n/a
Buy Volume
n/a
n/a
Sell Volume
€42M
56 ops. · all time
Who traded when
BuySaleKang Sun15 sales
Constantin Ionel Stefan9 sales
Thomas M. Stepien5 sales
Wallach Sandra4 sales
Donald R. Dixon3 sales
Bornstein Jonathan2 sales
Analyst consensus: bullish or bearish?
Analysts rate Amprius Technologies, Inc. Strong Buy (bullish), based on 10 analysts. Average price target: US$22.10.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Fundamental score
Ranked 22,911 of 24,148 companies
16.1
score / 100
Value25
Quality8
FCF yld-3.0%
Earn yld-3.8%
EV/EBITDA·
ROE-36%
Gross mgn11%
Net mgn-61%
Debt/EBITDA·
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
US$8.00
Analyst consensus
10 analystsStrong buy
US$14.00Target US$22.10(+176%)US$30.00
Income statement
RevenueUS$71.9M
Gross profitUS$8.3M11% margin
EBITDA-US$18.7M-26% margin
Net income-US$44M-33.4% margin
Valuation
PER (forward)80.0x
P/Book9.3x
Beta2.35
Balance sheet & cash
Market capUS$1.2B
Total debtUS$39.9M
Free Cash Flow-US$35.5M
Debt / Equity5%
Profitability & ownership
ROE-36.1%
ROA-8.6%
% insiders1.2%
% institutions69.5%
Last declaration on 25 August 2026
Declarations139 total
29,681 shares@ US$10.3410.021% mcap100.0% of flowCommonSEC144:0001940928-26-000023
23,529 shares@ US$10.3410.017% mcap66.5% of flowCommonSEC144:0002067233-26-000018
29,681 shares@ US$10.3410.021% mcap17.2% of flowCommon stockSEC:0001940928-26-000024:0
23,529 shares@ US$10.3410.017% mcap18.1% of flowCommon stockSEC:0002067233-26-000019:0
8,000 shares@ US$10.030.0055% mcap6.0% of flowCommon stockSEC:0002067233-26-000019:1
5,000 shares0Common stockSEC:0002067233-26-000019:2
5,000 shares0Common stockSEC:0002067233-26-000019:3
5,000 shares0Common stockSEC:0002067233-26-000019:4
346 shares0Common stockSEC:0002067233-26-000019:5
346 shares0Common stockSEC:0002067233-26-000019:6
8,000 shares@ US$10.030.0055% mcap22.0% of flowCommonSEC144:0001950047-26-008579
10,423 sharesCommon stockSEC:0001045434-26-000009:0
85,000 sharesCommon stockSEC:0001045434-26-000009:1
10,423 sharesCommon stockSEC:0001230569-26-000005:0
10,423 sharesCommon stockSEC:0001296381-26-000005:0
10,423 sharesCommon stockSEC:0001517394-26-000003:0
40,000 sharesCommon stockSEC:0001045434-26-000007:0
125,000 shares@ US$18.850.15% mcap88.1% of flowCommonSEC144:0001949846-26-000360
36,914 shares0Common stockSEC:0002067233-26-000015:1
30,384 shares0Common stockSEC:0002067233-26-000015:0
36,914 shares0Common stockSEC:0002067233-26-000015:2
2,000 shares@ US$20.970.0020% mcap3.1% of flowCommon stockSEC:0002067233-26-000015:3
2,000 shares@ US$20.970.0026% mcap11.5% of flowCommonSEC144:0001950047-26-005630
25 of 139 declarations
About Amprius Technologies, Inc.
Amprius Technologies, Inc. (ticker: AMPX) is a U.S.-listed company trading on the NYSE in the United States. From an equity analyst’s perspective, the company sits at the intersection of advanced materials, battery technology, and electrification. Amprius develops next-generation lithium-ion batteries built around a silicon-anode platform, with the core value proposition centered on higher energy density, higher power output, faster charging, and improved range or flight time versus conventional graphite-based cells. This makes the company particularly relevant in performance-sensitive markets where weight, volume, and endurance are critical.
The company’s roots are in silicon-anode battery innovation. Amprius states that it has been in commercial production for mobility applications since 2018, and its current operational base is Fremont, California, where it maintains its corporate headquarters, an R&D lab, and a pilot manufacturing facility for silicon anodes and cells. That Fremont site functions as the company’s engineering and validation center, while larger-scale manufacturing is increasingly supported through contract manufacturing and strategic supply partnerships. In other words, Amprius is a technology company with industrial ambitions, but its model is still heavily dependent on external scale-up execution.
Read moreShow less
Amprius’ main product platforms include SiMaxx and SiCore, both positioned as high-performance silicon-anode battery solutions. The company targets demanding end markets such as drones, unmanned aerial vehicles, light electric vehicles, aviation-related systems, defense applications, and other mobility or specialty industrial uses. Its competitive positioning is built less on mass-market volume and more on technical differentiation, intellectual property, and the ability to deliver premium performance where standard lithium-ion chemistry is not enough. In that sense, Amprius is competing in a niche where performance metrics matter more than commodity pricing.
Recent company developments have reinforced this positioning. In 2025, Amprius announced shipments of SiCore cells to drone customers, a $21 million purchase order for electric two- and three-wheelers, and strategic manufacturing partnerships in South Korea and in the United States to expand its production footprint. The company also reported meaningful commercial progress during 2025, including a broader customer base and strong revenue growth. These updates suggest that Amprius is moving from pure technology validation toward broader commercialization.
For investors, the key takeaway is that Amprius combines upside from advanced battery adoption with the risks typical of an emerging industrial technology company: production ramp risk, customer concentration risk, dependence on manufacturing partners, and capital intensity. Its NYSE listing and U.S. headquarters provide visibility, but the investment case remains tied to successful execution, scaling, and sustained demand for high-energy-density silicon-anode batteries.
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