A hostile bid would up the SP so CA may have to sell to prevent value of HUR being too big in their portfolio--same may apply to Kerogen--depends on what percentage of their portfolio a single investment can be--A hostile bid can be tricky to thwart unless you have a defence in place such as poison pill etc
Good post from Ricfle last night on UKOG re its BOD (can be applied to many oil/mining company BOD)--just drag a project out for years and draw cash while investors dream of the 10 bagger that never comes--Hur BOD a different class