Derivatives: Adjustment for dividend in Seadrill (SDRL) for derivatives with Oslo Børs as primary exchange (59/10)

The Board of SDRL has determined to distribute a cash dividend of USD 0.60 per
share with ex-date 15 June 2010. SDRL belongs to dividend class b) where the
whole dividend amount shall be adjusted for. 

Derivative contracts will be adjusted according to the Rules and Regulations of
NASDAQ OMX Derivatives Markets 4.43, and forward/future and option series will
be assigned new ISIN and marked with the letter X (Y or Z for series already
marked with X or Y) for deviating contract specifications. 

Please note that the holder of call option with Oslo Børs as primary Exchange
must exercise the option 2 trading days prior to the ex-dividend date for right
to dividend. 

For further information, please see the attached file.