June 28 (Reuters) - * Coastal Energy Co CEN.TO : Credit Suisse cuts price target to C$28 from C$32; rating outperform * Tag Oil Ltd TAO.TO : Credit Suisse cuts price target to C$4.50 from C$6.50; rating neutral * Transglobe Energy Corp TGL.TO : Credit Suisse cuts price target to C$8.50 from C$10.50; rating neutral * Gran Tierra Energy Inc GTE.A : Credit Suisse cuts price target to $8.75 from $9; rating outperform * Petrominerales Ltd PMG.TO : Credit Suisse cuts price target to C$6.25 from C$6.50; rating underperform For a summary of rating and price target changes on U.S. companies: Reuters Eikon users, click on RCH/US Reuters 3000Xtra users, double-click RCH/US Reuters Station users, click .1568 For a summary of rating and price target changes on Canadian companies: Reuters Eikon users, click on RCH/CA Reuters 3000Xtra users, double-click RCH/CA Reuters Station users, click .4899 ((nyc.equities.newsroom@reuters.com); (Reuters Messaging: saqib.ahmed.thomsonreuters.com@reuters.net) ((Bangalore Newsroom +91 80 6749 1130; within U.S. +1 646 223 8780))