Our climate action governance Board level governance All strategic sustainability activities are managed by our Chief Sustainability Officer (CSO), who is a member of the Siemens Managing Board and Chairman of the Siemens Sustainability Board (SSB).The Siemens Sustainability Board (SSB) is the central steering committee for the strategic development of sustainability in the Group, decides on important sustainability issues, and prepares recommendations for the Managing Board, such as the decision to become carbon neutral by 2030.