(All Amounts in U.S. dollars unless stated otherwise) VANCOUVER, March 21, 2014 /PRNewswire/ - GOLDCORP INC. (TSX: G, NYSE: GG) announced today that it has extended its offer to acquire all of the outstanding common shares of Osisko Mining Corporation ("Osisko") (TSX: OSK, Deutsche Boerse: EWX) until 5:00 p.m. EDT on April 4, 2014. Osisko shareholders who tender to the offer will be entitled to receive 0.146 of a Goldcorp common share plus C$2.26 in cash for each Osisko common share. All other conditions remain unchanged. A Notice of Extension will be sent to Osisko shareholders by Goldcorp in due course. The full details of the Offer are set out in the takeover bid circular (the "Circular") and related documents that were filed by Goldcorp with the Canadian provincial securities regulators and are available for review on Goldcorp's website at www.goldcorp.com and on SEDAR under Osisko's profile at www.sedar.com. Goldcorp encourages securityholders of Osisko to read the full details of the Offer set forth in the Circular which contains the full terms and conditions of the Offer and other important information as well as detailed instructions on how Osisko shareholders can tender their Osisko shares to the Offer. For assistance in depositing Osisko shares to the Offer, Osisko shareholders should contact the Depositary, CST Trust Company, who can be contacted at 1-800-387-0825 toll free in North America or at 416-682-3860 outside of North America or by e-mail at firstname.lastname@example.org; or the Information Agent, D.F. King, who can be contacted at 212-269-5550 for all banks and brokerage firms or at 1-800-290-6431 toll-free for all others or by email at email@example.com. For additional information on Goldcorp's offer for Osisko, please visit the Company's website at www.goldcorp.com. About Goldcorp Goldcorp is one of the world's fastest growing senior gold producers. Its low-cost gold production is located in safe jurisdictions in the Americas and remains 100% unhedged.