Siemens’ battles over damages payments for a multi-billion euro bribery scandal will reach a crucial stage this week when the engineering group’s supervisory board is expected to issue an ultimatum to eight former executive board managers.

Siemens’ supervisory board is set to decide on Wednesday on a final deadline for a settlement with former managers, including ex-chief executives Heinrich von Pierer and Klaus Kleinfeld, several people close to the situation told the FT.