Financial & Legal Records

Public financial and legal filings contain infrastructure details, personnel names, risk disclosures, and supplier relationships often not visible elsewhere.

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Company Filings

Source	URL	Jurisdiction	What’s in it
Companies House	https://find-and-update.company-information.service.gov.uk	UK	Annual accounts, director names, addresses, charges
SEC EDGAR	https://www.sec.gov/edgar	US	10-K, 10-Q, 8-K, proxy statements
EU/national registries	Varies	EU	Equivalent company filings

Useful disclosures in annual reports:

• Named technology vendors and key suppliers
• Material IT incidents or cyber risk disclosures (reveals security posture)
• Litigation history — reveals disputes with customers/partners/employees
• Key personnel changes — new CISO, CTO may signal security transformation

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UK-Specific

# Companies House free API
curl "https://api.company-information.service.gov.uk/company/COMPANY_NUMBER" \
  -u API_KEY:
 
# Search by name
curl "https://api.company-information.service.gov.uk/search/companies?q=Example+Corp"

What to look for:

• PSC (Persons of Significant Control) register — beneficial ownership
• Charges register — major creditors, floating charges
• Confirmation statements — verify registered address and SIC code
• Filing history — gap in filings may indicate distress or change

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US-Specific (EDGAR)

# Search SEC filings
# https://efts.sec.gov/LATEST/search-index?q="example+company"&dateRange=custom&startdt=2023-01-01
 
# 10-K (annual report) contains:
# - "Risk factors" section — IT and cyber risk disclosures
# - "Properties" section — office locations
# - "Directors and executive officers" — C-level names

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Patent & IP Research

• Google Patents: https://patents.google.com — reveals technical innovations and product details
• USPTO: https://www.uspto.gov — US patent database
• EPO: https://www.epo.org — European patents

Patent filings can reveal internal product names, infrastructure design, and employee names (inventors).

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See Also

• Company Research — Corporate overview and structure
• Employee Enumeration — Personnel identification