
Main Street Capital CORP — Investor Relations & Filings
Main Street Capital Corporation is a principal investment firm and business development company specializing in providing customized long-term debt and equity capital solutions. The firm's primary focus is on lower middle market companies, typically with annual revenues between $10 million and $150 million, offering them 'one-stop' financing. Additionally, Main Street executes a private loan investment strategy, providing debt capital to private companies, often owned by private equity funds, with annual revenues generally between $25 million and $500 million. The company partners with entrepreneurs, business owners, and management teams to support growth while allowing for operational autonomy.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K - Main Street Capital CORP (0001396440) (Filer) | 2026-04-16 | English | |
| 8-K - Main Street Capital CORP (0001396440) (Filer) | 2026-04-09 | English | |
| 8-K - Main Street Capital CORP (0001396440) (Filer) | 2026-04-09 | English | |
| 8-K - Main Street Capital CORP (0001396440) (Filer) | 2026-03-31 | English | |
| 497AD - Main Street Capital CORP (0001396440) (Filer) | 2026-03-27 | English | |
| 497AD - Main Street Capital CORP (0001396440) (Filer) | 2026-03-27 | English |
Market data
Market data not available
Price history
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Main Street Capital CORP 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/30959/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=30959 | 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=30959 | 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=30959 \ -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": 30959}, 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 Main Street Capital CORP (id: 30959)"
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