The full 13D/G filing history of one reporting person, addressed by their SEC CIK (preferred, exact) or by name. Returns every filing the filer has made across all companies, newest first, with the same fields as the activist_filings feed. Use it to follow a specific activist - their new stakes, additions, trims and exits over time.
Filer CIKs are returned by the activist_filings endpoint; when addressing by name, the most active filer whose name contains the query is selected.
Try it out! You can test the API with the trial key TEST. Simply include it in your request headers; either here, or add the header "Ortex-Api-Key": "TEST" to your http request.
Trial key restrictions: A list of randomly selected rows will be returned
Get full access! Get a key at app.ortex.com/apis
# OpenAPI definition ```json { "openapi": "3.0.3", "info": { "title": "ORTEX APIs", "version": "1.0", "description": "A revolutionary global equity analytics platform which identifies and analyses relevant data for your stocks." }, "paths": { "/api/v1/activist_filings/filer": { "get": { "operationId": "activist_filings_filer_list", "description": "\nThe full 13D/G filing history of one reporting person, addressed by their SEC CIK (preferred, exact) or by name. Returns every filing the filer has made across all companies, newest first, with the same fields as the activist_filings feed. Use it to follow a specific activist - their new stakes, additions, trims and exits over time.
\nFiler CIKs are returned by the activist_filings endpoint; when addressing by name, the most active filer whose name contains the query is selected.
\n\nTry it out! You can test the API with the trial key TEST. Simply include it in your request headers; either here, or add the header \"Ortex-Api-Key\": \"TEST\" to your http request.
\nTrial key restrictions: A list of randomly selected rows will be returned
\nGet full access! Get a key at app.ortex.com/apis
\n", "summary": "Filings by Filer", "parameters": [ { "in": "query", "name": "filer_cik", "schema": { "type": "string" }, "description": "The filer's SEC CIK (as returned by the activist_filings endpoint). Takes precedence over filer_name" }, { "in": "query", "name": "filer_name", "schema": { "type": "string" }, "description": "Filer name (case-insensitive substring; the most active matching filer is chosen). Provide either filer_cik or filer_name" }, { "name": "page", "required": false, "in": "query", "description": "A page number within the paginated result set.", "schema": { "type": "integer" } }, { "name": "page_size", "required": false, "in": "query", "description": "Number of results to return per page.", "schema": { "type": "integer" } } ], "tags": [ "Activist Filings" ], "security": [ { "ApiKeyAuth": [] } ], "responses": { "200": { "content": { "application/json": { "schema": { "$ref": "#/components/schemas/PaginatedActivistFilerFilingList" }, "examples": { "FilerFiling": { "value": { "paginationLinks": { "next": "http://api.example.org/accounts/?page=4", "previous": "http://api.example.org/accounts/?page=2" }, "length": 123, "rows": [ { "company": "Nautilus Biotechnology, Inc.", "ticker": "NAUT", "exchange": "NASDAQ", "filedDate": "2026-08-28", "eventDate": "2026-08-26", "filingType": "13D/A", "filerName": "Marc L. Andreessen", "filerCik": "0001808805", "filerImageUrl": "https://d12umhc4qnznw5.cloudfront.net/activists/0001808805.jpg", "percentOfClass": 6, "percentChange": -1.1, "sharesOwned": 7680000, "secUrl": "https://www.sec.gov/Archives/edgar/data/1808805/000172572126000006/" } ], "creditsUsed": 3, "creditsLeft": 999 }, "summary": "Filer filing" } } } }, "description": "" }, "400": { "description": "Invalid request parameters" }, "403": { "description": "Not authorized" }, "404": { "description": "Data not found" }, "429": { "description": "Rate limit exceeded" }, "500": { "description": "Internal server error" } } } } }, "components": { "schemas": { "ActivistFilerFiling": { "type": "object", "properties": { "company": { "type": "string" }, "ticker": { "type": "string" }, "exchange": { "type": "string", "readOnly": true }, "filedDate": { "type": "string", "format": "date" }, "eventDate": { "type": "string", "format": "date", "nullable": true }, "filingType": { "type": "string" }, "filerName": { "type": "string" }, "filerCik": { "type": "string" }, "filerImageUrl": { "type": "string" }, "percentOfClass": { "type": "number", "format": "double", "nullable": true }, "percentChange": { "type": "number", "format": "double", "nullable": true }, "sharesOwned": { "type": "number", "format": "double", "nullable": true }, "secUrl": { "type": "string" } }, "required": [ "company", "eventDate", "exchange", "filedDate", "filerCik", "filerImageUrl", "filerName", "filingType", "percentChange", "percentOfClass", "secUrl", "sharesOwned", "ticker" ] }, "PaginatedActivistFilerFilingList": { "type": "object", "required": [ "length", "paginationLinks", "rows" ], "properties": { "paginationLinks": { "type": "object", "example": { "next": "http://api.example.org/accounts/?page=4", "previous": "http://api.example.org/accounts/?page=2" } }, "length": { "type": "integer", "example": 123 }, "rows": { "type": "array", "items": { "$ref": "#/components/schemas/ActivistFilerFiling" } }, "creditsUsed": { "type": "integer", "example": 3 }, "creditsLeft": { "type": "integer", "example": 999 } } } }, "securitySchemes": { "ApiKeyAuth": { "type": "apiKey", "in": "header", "name": "Ortex-Api-Key", "description": "Use test API key: `TEST` to get a limited result." } } }, "servers": [ { "url": "https://api.ortex.com/", "description": "Production" } ] } ```