- William Dozier
- William Drinkwater
- William Duff
- William Duncan + Co Acquired By Forward Corporate Finance
- William E. Kelly Agency Acquired By Tysers Insurance Brokers Limited
- William Edwards
- William Edwards
- William Edwards Acquired By Steelite International
- William Eigner
- William Elchik
- William Ellison
- William Ellison, III
- William Engelking
- William Engelking
- William Etter
- William Farrell
- William Fiederlein
- William Filip
- William Finnegan
- William Fish
- William Fisher
- William Flaherty
- William Fleder
- William Flynn
- William Fogg
- William Fong
- William Foote
- William Ford
- William Ford
- William Forrest
- William Forster
- William Fowlis
- William Frame
- William Frank
- William Freels
- William Frick Acquired By Presco Holdings inc.
- William Fry
- William Fuller III
- William G. Satterlee & Sons Acquisitions
- William Gadsden
