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William J. Hannigan

Former President & Chief Operating Officer at AT&T Corp. (Inactive)
Relationship Science aggregates deep and verified information on over 6 million influential decision makers and the over 1.5 million organizations with which they are associated. From this data, we create a "business social graph" that highlights who knows whom. Here are William J. Hannigan's strongest connections.

People Most Closely Connected to William J. Hannigan

Click the names below to expand relationship details.
M. Sam Gilliland
Chief Operating Officer & Executive Vice President at Dimensional Fund Advisors LP
Tom Klein
President & Chief Executive Officer at SoftHotel, Inc.
Robert M. Malcolm
Director at The Hershey Co.
John C. Hodgson
Former Senior Vice President, Chief Marketing & Sales Officer at DuPont
Kent J. Hussey
Senior Operational Advisor at Nancy Creek Capital Management
Bryan T. Moss
Chairman of Business Aircraft Investments at Guggenheim Partners
Michael D. Lister
Former Chairman & Chief Executive Officer at Jackson Hewitt Tax Service, Inc.
Mike O'Driscoll
Group Chief Executive Officer at Williams Grand Prix Holdings Plc
Gregory T. Webb
President-Travel Network at Sabre Holdings Corp.
Jeffrey M. Jackson
Managing Director at Thayer Ventures
Noah Gottdiener
Chief Executive Officer & Chairman of the Board at Duff & Phelps - New York
Jacob L. Silverman
President at Duff & Phelps - New York
Sander M. Levy
Co-Founder at Bridge Growth Partners
Gerard Creagh
Managing Partner at CVC Advisers
John Kritzmacher
Chief Financial Officer & Executive Vice President, Technology & Operations at John Wiley & Sons, Inc.
Glenn W. Marschel, Jr.
Vice President of Sales & Business Development at, Inc.
Bobby L. Martin
Chief Executive Officer at Mcon Management Services Ltd.
Richard L. Thomas
Former Management Training Program at Inland Steel Company
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