ISIN#l

At least five (5) Business Days (as defined in the Indenture) prior to each payment date as interest on this Debenture and principal become due, the Company shall forward or cause to be forwarded by prepaid ordinary mail to the Registered Holder at the address appearing on the register of Debentureholders (as defined in the Indenture) maintained by Canadian Imperial Bank of Commerce (the “Issuing, Transfer and Redemption Agent”), a cheque drawn on a chartered bank in Toronto for such interest or principal, as the case may be, payable to the registered Holder. The forwarding of such cheque shall satisfy and discharge the liability of the Company for such interest or principal to the extent of the sum represented thereby unless such cheque shall not be paid on presentation.

This Debenture is one of a series of like debentures designated as Senior Unsecured Series 2013-3 Debentures of the Company (the “Debentures”) issued pursuant to the indenture made as of September 26, 2005, as supplemented by supplemental indentures from time to time (the “Indenture”) between the Company and BNY Trust Company of Canada (the “Trustee”). This Debenture and all other Debentures now or hereafter issued or certified under the Indenture shall rank pari passu with all other senior unsecured obligations of the Company.

This Debenture is issued subject to the provisions of the Indenture which is hereby referred to for a complete statement of the rights of the holders of Debentures issued thereunder and of the Company and of the Trustee in respect thereof and of the terms and conditions upon which the Debentures are issued and held, to all of which the Registered Holder by acceptance of this Debenture assents. In the case of any conflict or inconsistency between the terms of this Debenture and the terms of the Indenture, the terms of the Indenture shall prevail.

The Indenture contains provisions dealing with the effect of default under one or more of the Debentures.

This Debenture is a direct obligation of the Company, subject to the terms and conditions of the Indenture.

This Debenture shall be transferable subject to resale restrictions imposed under applicable securities laws; provided however, that no transfer of this Debenture shall be valid or effective unless:

The principal hereof may become due or be declared due before the Maturity Date of the Debentures, as more particularly provided in the Indenture.

The Indenture contains provisions for the holding of meetings of, and the giving of notices to the Debentureholders and the rendering of Extraordinary Resolutions (as defined in the Indenture) passed by the holders of a specified majority of the principal amount of the Debentures outstanding under the Indenture at a meeting of the Debentureholders or written instruments signed by Debentureholders may become binding upon all Debentureholders.

For purposes of disclosure pursuant to the Interest Act (Canada), the annual rates of interest provided in this Debenture (and stated herein to be computed on the basis of a 365 day year or any other period of time less than a calendar year) are equivalent to the rates so determined multiplied by the actual number of days in the applicable calendar year and divided by 365 or such period of time, as the case may be.