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Activist Pro Tip: Don’t Put Your Girlfriend on the Board

Analysis by
June 26, 2023 at 6:46 a.m. EDT
Alex Denner, chief investment officer and founding partner of Sarissa Capital Management LP, speaks at the Next Wave Sohn during the 20th Annual Sohn Investment Conference in New York, U.S., on Monday, May 4, 2015. Since 1996 the Sohn Investment Conference has brought together the world’s savviest investors to share fresh insights and strategies in support of pediatric cancer research and treatment. (Photographer: Bloomberg/Bloomberg)

As an activist investor, Alex Denner has made a career out of telling companies what they are doing wrong and convincing shareholders that he can make them better. A cringey corporate governance disaster risks ending his ability to do either.

Denner, the head of Sarissa Capital Management, is stepping down from the board of drugmaker Biogen Inc. to pursue a campaign against one of its partners, Alkermes Plc. If that seems questionable, it is nothing compared to Denner’s solution for filling the seat he’s vacating. In a brazenly inappropriate act, Denner has determined that his girlfriend, Susan Langer, is the fiduciary Biogen and its shareholders need.