John Watson, chief executive of the US supermajor, saw his bonus cut to $3.48 million from $4 million in 2011.

Chief financial officer PE Yarrington saw her allocation drop to $1.3 million from $1.42 million and executive vice president GL Kirkland’s bonus fell to $2.2 million from $2.6 million.

The board “took into account certain 2012 operating incidents” in determining the annual performance compensation, the company said in a securities filling.

Executive