The National Quotation Bureau has been around for over 100 years. They rebranded three times after that...Pink Sheets llc and then OTC Markets..then OTC Markets Group.
NQB purchased by Commerce Clearing House circa early 60's
Rebranded to Pink Sheets Llc circa 2000
Rebranded to OTC Markets circa 2007/8
Rebranded to OTC Markets Group a couple of years later