Jonathan Gorman Cook Sr
Investment Adviser Representative at WILLIAM BLAIR & COMPANY L.L.C.
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Jonathan Gorman Cook has worked in the securities industry since 1986. They have passed the Series 65, 63, 15, 7, 5, and 3 examinations. They are registered to provide investment advisory services in Illinois.
Registrations & licenses
Approximate fees
Estimated from the firm's Form ADV — individual terms may differ. Not a quote.
William Blair & Company L.L.C. Form ADV Part 2A (Item 5), most recent annual amendment.
Employment history
Registration history as reported to FINRA, most recent first.
Official records & sources
Data as of June 21, 2026 · Source: SEC IAPD & FINRA BrokerCheck
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