Mapping CIK, company name and ticker

Over the years I have encountered the issue of mapping between CIK, company name and stock ticker. Below is a list of useful resources to help with this transcoding: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=AAPL&count=100&output=xml Requires some additional data extraction https://www.sec.gov/Archives/edgar/cik-lookup-data.txt https://www.sec.gov/include/ticker.txt