Arcellx, Inc. — Investor Relations & Filings
Arcellx, Inc. is a clinical-stage biotechnology company that develops immunotherapies for patients with cancer and autoimmune diseases. The company is focused on reimagining cell therapy through its proprietary D-Domain technology. This technology is the foundation for its two main platforms: ddCAR, which produces autologous and allogeneic CAR-T therapies, and ARC-SparX, which involves controllable and adaptable cell therapies. Arcellx's lead investigational product, CART-ddBCMA, is in clinical development for the treatment of relapsed or refractory multiple myeloma. The company aims to create therapies that are safer, more effective, and more broadly accessible.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| S-8 POS - Arcellx, Inc. (0001786205) (Filer) | 2026-04-28 | English | |
| 25-NSE - Arcellx, Inc. (0001786205) (Subject) | 2026-04-28 | English | |
| 10-K/A - Arcellx, Inc. (0001786205) (Filer) | 2026-04-24 | English | |
| SCHEDULE 13G/A - Arcellx, Inc. (0001786205) (Subject) | 2026-03-26 | English | |
| 4 - Arcellx, Inc. (0001786205) (Issuer) | 2026-03-19 | English | |
| 4 - ARCELLX, INC. (0001786205) (Filer) | 2026-03-04 | English |
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Arcellx, 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/31114/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31114 | 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=31114 | 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=31114 \ -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": 31114}, 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 Arcellx, Inc. (id: 31114)"
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