Bloomberg Anywhere Remote Login Bloomberg Terminal Demo Request


Connecting decision makers to a dynamic network of information, people and ideas, Bloomberg quickly and accurately delivers business and financial information, news and insight around the world.


Financial Products

Enterprise Products


Customer Support

  • Americas

    +1 212 318 2000

  • Europe, Middle East, & Africa

    +44 20 7330 7500

  • Asia Pacific

    +65 6212 1000


Industry Products

Media Services

Follow Us

November 28, 2015 5:41 AM ET

Capital Markets

Company Overview of William Blair & Company, L.L.C.

Executive Profile

John L. Brennan

Head of Private Wealth Management, William Blair & Company, L.L.C.
AgeTotal Calculated CompensationThis person is connected to 2 Board Members in 2 different organizations across 4 different industries.

See Board Relationships


Mr. John L. Brennan serves as Head of Private Wealth Management at William Blair & Company, L.L.C. Mr. Brennan served as Chicago Market President and Illinois State President of Bank of America Corporation since December 2005 until November 2007. He served as President of the Central Region of Private Bank at Bank of America Corp. since August 22, 2005. He was responsible for providing an array of wealth management services and advice to high net worth individuals and ...

Corporate Headquarters

222 West Adams Street
Chicago, Illinois 60606

United States

Phone: 312-236-1600
Fax: 312-368-9418

Board Members Memberships

Vice Chairman


Vanderbilt University
Vanderbilt University

Other Affiliations

Annual Compensation

There is no Annual Compensation data available.

Stocks Options

There is no Stock Options data available.

Total Compensation

There is no Total Compensation data available.

Stock Quotes

Market data is delayed at least 15 minutes.

Company Lookup


There is no Competitor Compensation data available.

Sponsored Financial Commentaries

Sponsored Links

Request Profile Update

Only a company representative may request an update for the company profile. Documentation will be required.

To contact William Blair & Company, L.L.C., please visit . Company data is provided by Capital IQ. Please use this form to report any data issues.

Please enter your information in the following field(s):
Update Needed*

All data changes require verification from public sources. Please include the correct value or values and a source where we can verify.

Your requested update has been submitted

Our data partners will research the update request and update the information on this page if necessary. Research and follow-up could take several weeks. If you have questions, you can contact them at