Former Zurich Insurance Chairman Josef Ackermann

Former Zurich Insurance Chairman Josef Ackermann

Hannelore Foerster/Bloomberg

Former Zurich Insurance Chairman Josef Ackermann’s abrupt departure after the suicide sent the company’s shares down as much as 3.8 percent on Aug. 29 and sparked doubts about Zurich Insurance’s financial health after it missed analysts’ profit estimates in three of the past four quarters and announced a surprise write-off in October.