AMPX Amprius Technologies, Inc.

company

SEC Filings & Insider Trading Activity 2026

Business Overview

• • Core business: develops and markets high-performance lithium-ion silicon anode batteries focused on aviation, ground, and marine electric mobility
• • New product: full commercial launch of SiCore silicon anode batteries in January 2024 with annual production capacity >2.0 GWh via global contract manufacturing
• • Strategic shift: terminated large 774,000 sq ft Colorado lease in early 2026 to emphasize outsourced contract manufacturing for rapid scalable production and minimal capital investment
• • Quantitative highlight: access to >2.0 GWh annual SiCore battery production capacity; expanded Fremont pilot line to 10 MWh capacity; $14.8 million US government contract awarded in 2025
• • Noteworthy fact: unveiled >500 Wh/kg prototype SiMaxx battery in March 2023, half the weight and volume of current state-of-the-art cells; still in development as of Dec 2025

Risk Factors

• • Regulatory risk: NDAA compliance required for battery components under Defense Innovation Unit program; sourcing compliant suppliers challenging, risking delays and program standing
• • Geopolitical risk: Reliance on suppliers in China exposes operations to U.S.-China trade conflicts and tariffs, increasing costs and supply chain disruption risks
• • Operational risk: Dependence on third-party manufacturing, including Berzelius, without established commercial terms risks supply shortages, price hikes, and quality control issues
• • Market disruption risk: Emerging alternative battery technologies and competitors with greater resources threaten market share expansion and profitability
• • Financial risk: Early-stage company with history of losses, needing significant capital for manufacturing scale-up and uncertain cost targets to achieve profitability

Management Discussion & Analysis

• • Revenue $73.0M, up 202% YoY from $24.2M driven by $48.1M increase in SiCore battery sales and $0.5M in government grants
• • Gross margin 11% vs (76)% loss YoY, driven by higher sales volume; operating loss stable at $(46.6)M vs $(46.3)M
• • Best segment: SiCore battery sales $48.1M increase; Worst: customization design services revenue down $1.2M
• • Cash $90.5M at year-end 2025; $97.5M net proceeds from stock sales under Sales Agreement; no debt; $19.1M impairment charge on Colorado facility lease termination
• • Management expects to expand contract manufacturing, increase pilot line capacity to 10 MWh in 2026, and sees risks from global supply chain and regulatory changes impacting defense contracts

What are the latest AMPX SEC filings in 2026?

Amprius Technologies, Inc. (AMPX) has filed a 10-K annual report on March 6, 2026, a 10-Q quarterly report on May 7, 2026, an 8-K current report on August 4, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.

When did AMPX file its most recent 10-K annual report?

Amprius Technologies, Inc. (AMPX) filed its most recent 10-K annual report on March 6, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.

How do I view AMPX 10-Q quarterly reports?

Amprius Technologies, Inc. (AMPX)'s most recent 10-Q quarterly report was filed on May 7, 2026. SignalX displays every AMPX 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.

What 8-K current reports has AMPX filed recently?

Amprius Technologies, Inc. (AMPX)'s most recent 8-K was filed on August 4, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.

Where can I find AMPX insider trading activity (Form 4)?

SignalX aggregates every AMPX Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.

How often does AMPX file with the SEC?

Amprius Technologies, Inc. (AMPX) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new AMPX filing with AI-powered analysis.

What is the difference between 10-K, 10-Q, and 8-K SEC filings?

A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs, such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for Amprius Technologies, Inc. (AMPX).

What is AMPX's SEC CIK number?

Amprius Technologies, Inc. (AMPX)'s SEC CIK (Central Index Key) number is 1899287. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 1899287 to look up all AMPX filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.

Where can I find AMPX return on equity (ROE) and financial data?

SignalX extracts XBRL financial data from Amprius Technologies, Inc. (AMPX) 10-K annual filings, including revenue, net income, gross profit, operating income, EPS, total assets, stockholders' equity, and operating cash flow. Return on equity (ROE) can be derived from net income divided by stockholders' equity. Multi-year financial trends are displayed in the Financial Summary table above.