
Amprius Technologies, Inc. — Investor Relations & Filings
Amprius Technologies, Inc. develops and manufactures advanced lithium-ion batteries featuring a proprietary silicon anode technology. This technology enables the production of cells with industry-leading energy and power density, which provides significant performance improvements over conventional graphite-based batteries. The company's batteries are engineered to deliver longer range, higher payloads, and faster charging capabilities. Key markets for these high-performance cells include demanding applications in electric mobility, particularly in the aviation sector (such as drones, Unmanned Aerial Systems, and electric aircraft), as well as electric vehicles and advanced electronics.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K - Amprius Technologies, Inc. (0001899287) (Filer) | 2026-04-21 | English | |
| SCHEDULE 13G/A - Amprius Technologies, Inc. (0001899287) (Subject) | 2026-03-26 | English | |
| 4 - Amprius Technologies, Inc. (0001899287) (Issuer) | 2026-03-25 | English | |
| 144 - Amprius Technologies, Inc. (0001899287) (Subject) | 2026-03-23 | English | |
| 8-K - AMPRIUS TECHNOLOGIES, INC. (0001899287) (Filer) | 2026-03-04 | English | |
| 4 - AMPRIUS TECHNOLOGIES, INC. (0001899287) (Filer) | 2026-02-24 | English |
| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
15 filings
| |||||
| 34930944 | 8-K - Amprius Technologies, Inc. (0001899287) (Filer) | 2026-04-21 | English | ||
| 33051851 | SCHEDULE 13G/A - Amprius Technologies, Inc. (0001899287) (Subject) | 2026-03-26 | English | ||
| 33035886 | 4 - Amprius Technologies, Inc. (0001899287) (Issuer) | 2026-03-25 | English | ||
| 33016483 | 144 - Amprius Technologies, Inc. (0001899287) (Subject) | 2026-03-23 | English | ||
| 32900424 | 8-K - AMPRIUS TECHNOLOGIES, INC. (0001899287) (Filer) | 2026-03-04 | English | ||
| 32900422 | 4 - AMPRIUS TECHNOLOGIES, INC. (0001899287) (Filer) | 2026-02-24 | English | ||
| 32900423 | 4 - AMPRIUS TECHNOLOGIES, INC. (0001899287) (Filer) | 2026-02-24 | English | ||
| 32190504 | 8-K Filing | 2026-02-03 | English | ||
| 32190524 | 4 Filing | 2026-01-30 | English | ||
| 13560753 | FORM 4 | 2026-01-23 | English | ||
| 13560755 | Regulatory Filings 2026 | 2026-01-21 | English | ||
| 13560756 | FORM 4 | 2026-01-20 | English | ||
| 13560758 | Regulatory Filings 2026 | 2026-01-16 | English | ||
| 13560757 | FORM 4 | 2026-01-15 | English | ||
| 13560759 | Regulatory Filings 2026 | 2026-01-12 | English | ||
Market data
Market data not available
Price history
Peer group · Manufacture of batteries and accumulators
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|---|---|---|---|
|
ENDURANCE MO
Designs and manufactures lithium-ion batteries for electrom…
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END | ES | Manufacturing |
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Enershare Technology Corporation
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— | CA | Manufacturing |
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EnerSys
Designs, manufactures, and distributes mission-critical sto…
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ENS | US | Manufacturing |
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Enovix Corp
Designs and manufactures advanced lithium-ion batteries wit…
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ENVX | US | Manufacturing |
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Ensurge Micropower ASA
Manufactures ultrathin, flexible, solid-state lithium micro…
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ENSU | NO | Manufacturing |
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Eos Energy Enterprises, Inc.
Designs and manufactures long-duration, zinc-powered energy…
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EOSE | US | Manufacturing |
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E Schnapp & Co Works Ltd.
Manufactures, imports, and distributes batteries for vehicl…
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SHNP | IL | Manufacturing |
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ESS Tech, Inc.
Designs and manufactures iron flow batteries for long-durat…
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GWH | US | Manufacturing |
Amprius Technologies, Inc. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/32018/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=32018 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=32018 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=32018 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 32018}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Amprius Technologies, Inc. (id: 32018)"
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