Jenner & Block, a longtime Chicago firm, demonstrates well the fast-paced attorney comings and goings happening in the city this year.

Since the beginning of the year, Jenner has lost a top bankruptcy attorney and his three-lawyer coterie to crosstown rival Winston & Strawn, waved goodbye to two private equity attorneys who left for Perkins Coie and given up a top litigator who is a past president of the National Association of Women Lawyers.