In the interest of speculation here are a few things that give credence to possibly more to it: 1) In addition to PKI she is a director of BorgWarner (a company I never heard of) and GLPG only mentioned BMY and specifically mentioned about a conflict of interest. 2) The PR says she was a director of GLPG since 2011 and checking BMY she was from at least 2009 (I only checked back that far). So its not as if she just came into a conflict by joining one or the other.
An alternate simple explanation is one or the other recently became involved in a program which puts her in a position of conflict.
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