Suncor Energy announces successful acquisition of 72.9% of Canadian Oil Sands shares - Seite 3

Full details of the Offer and the related documents are available under the COS profile at www.sedar.com and through Suncor's website at http://www.suncorofferforcanadianoilsands.com.

D.F. King has been retained as information agent for the Offer. Shareholders may contact D.F. King at:

Toll Free in North America: 1-866-521-4427

Banks, Brokers and Collect Calls: 1-201-806-7301

Toll Free Facsimile: 1-888-509-5907

Email: [e-mail]

NOTICE TO U.S. HOLDERS

The Offer is being made for the securities of a Canadian issuer by a Canadian issuer that is permitted, under a multijurisdictional disclosure system adopted by the United States, to prepare the Offer documents in accordance with the disclosure requirements of Canada. Shareholders in the United States should be aware that such requirements are different from those of the United States. The financial statements included or incorporated by reference in the Offer documents have been prepared in accordance with International Financial Reporting Standards, and are subject to Canadian auditing and auditor independence standards, and thus may not be comparable to financial statements of U.S. companies.

Shareholders in the United States should be aware that the disposition of their shares and the acquisition of Suncor's common shares by them as described in the Offer documents may have tax consequences both in the United States and in Canada. Such consequences for shareholders who are resident in, or citizens of, the United States may not be described fully in the Offer documents.

The enforcement by shareholders of civil liabilities under U.S. federal securities laws may be affected adversely by the fact that each of Suncor and COS are incorporated under the laws of Canada, that some or all of their respective officers and directors may be residents of a foreign country, that some or all of the experts named in the Offer documents may be residents of a foreign country and that all or a substantial portion of the assets of Suncor and COS and said persons may be located outside the United States.