William J. Hannigan

Former President & Chief Operating Officer at AT&T Corp. (Inactive)

Relationship Science aggregates deep and verified information on over 8 million influential decision makers and the over 1.7 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
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