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GET /v1/companies/subsidiaries

Return the list of subsidiaries extracted from the latest 10-K Exhibit 21 for a given entity
Use this endpoint from server-side applications, SDKs, or agent workflows.

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Agent mode

Pass ?view=agent to receive the compact agent shape: per-subsidiary fields (name, jurisdiction, ownershipPercent) + envelope citation fields (accessionNumber, filingDate, filingUrl). The lineage metadata block is dropped. The per-item shape is already narrow, so this endpoint is an API-consistency win rather than a byte-size win — reduction is approximately 0% but the agent envelope matches the contract exposed by every other agent-mode endpoint. See api conventions → response formats for the full ?view= contract.

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Response metadata

  • requestId
  • traceparent

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Example request

curl -X GET \
  -H "x-api-key: $SECAPI_API_KEY" \
  -H "secapi-version: 2026-03-19" \
  "https://api.secapi.ai/v1/companies/subsidiaries"

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Example response

{
  "requestId": "req_example_123",
  "traceparent": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01"
}

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Give this prompt to your agent

Copy this SEC API prompt for your agent.

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Errors and partial results

  • Treat non-2xx responses as API errors and log the response body for debugging
  • Log requestId and traceparent so SEC API support can trace the request
  • if provenance or freshness metadata is present, return it unchanged so trust is not lost in the handoff