SEC filings & market structure

Activist Stakes (13D / 13G)

Returns Schedule 13D / 13G beneficial-ownership disclosures — filings made by anyone holding ≥5% of a class of registered equity securities. Each record is one reporting person on one filing (joint filings emit multiple rows under the same accession_number).

EndpointGET /v1/activist-stakes

SourceSEC Schedule 13D / 13G

Authx-api-key — a free key works

What it returns

One record per result. Fields (from a live response):

Identity — filer_type, filer_name, filer_cik, company_cik, company_name
Subject — cusip, ticker
Dates — filing_date, event_date
Amounts — shares_owned
Provenance — sec_filing_url, data_source, accession_number
Details — shared_dispositive_power, sole_dispositive_power, percent_of_class, shared_voting_power, citizenship_or_organization, sole_voting_power, filing_type, id, is_activist

Filters

ticker	Issuer stock symbol filter, e.g. 'AAPL'. Case-insensitive.
company_cik	Issuer SEC CIK (10-digit, padded with leading zeros). Alternative to ticker.
cusip	9-character CUSIP of the security being reported on. Useful for cross-class filings (preferred vs common).
filer_name	Full or partial filer name; case-insensitive substring match. Example: 'BlackRock' matches all BlackRock entities.
filer_cik	Filer (reporting person) CIK. Exact match.
is_activist	Filter to 13D filings only (true) or 13G only (false). Omit to include both. Use is_activist=true to surface takeover/activist signal.
filing_type	Exact filing type. /A variants are amendments. Original 13D/G filings (no /A) signal a fresh crossing of the 5% threshold.
min_percent_of_class	Filter to filings where percent_of_class >= this value. Use to focus on large/concentrated stakes.
since	ISO date (YYYY-MM-DD). Only records on or after this date, using sort_by as the date field.
until	ISO date (YYYY-MM-DD). Only records on or before this date.
sort_by	Field used for ordering and for the since/until date filters. Default: filing_date.
sort_order	Default: desc (most recent / largest first).
limit	Maximum records to return. Default 50, max 500.

Example request

curl "https://api.keyvex.com/v1/activist-stakes?ticker=AAPL&limit=1" \
  -H "x-api-key: YOUR_KEY"

Response

{
  "results": [
    {
      "shared_dispositive_power": 0,
      "filer_type": "IN",
      "cusip": "007025869",
      "ticker": "ADTX",
      "sec_filing_url": "https://www.sec.gov/Archives/edgar/data/1726711/000214142326000002/primary_doc.xml",
      "filing_date": "2026-06-22",
      "filer_name": "Ching-Johnson Justin",
      "shares_owned": 0,
      "data_source": "SEC_EDGAR_13G",
      "sole_dispositive_power": 0,
      "accession_number": "0002141423-26-000002",
      "filer_cik": "0002141423",
      "percent_of_class": 0,
      "shared_voting_power": 0,
      "citizenship_or_organization": "A5",
      "company_cik": "0001726711",
      "sole_voting_power": 0,
      "company_name": "Aditxt, Inc.",
      "event_date": "2026-06-16",
      "filing_type": "SCHEDULE 13G/A",
      "id": "0002141423-26-000002-ADTX-1",
      "is_activist": false
    }
  ],
  "count": 1,
  "has_more": true
}

Example questions you can answer

New activist 13D filings on a ticker this month.
All 5%+ beneficial owners of a company.

Related datasets

Insider TransactionsSEC Form 4 / 5 insider buys and sells.Planned Insider SalesSEC Form 144 Institutional Holdings (13F)SEC Form 13F Fund Filings (N-PORT)SEC Form N-PORT

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