EnCana Corp. (“ECA/ECA1C”)
Distribution of Shares of Cenovus Energy Inc. (“CVE”)
Ex-Distribution Date: December 9, 2009

Attached, for your information is an important memo from the Options Clearing Corporation.

We urge you to read this (see link) and distribute to others within your organization you deem
appropriate.

http://www.optionsclearing.com/market/infomemos/2009/nov/26610.pdf

Key Information:
ECA1C changes to ECA2C On 12/9/09
ECA2C CME Clearing Code EC8
ECA1C Standard (100 Shares) Reintroduced on 12/10/09
GTC Order Handling New OCC Methodology* No change to Price or Quantity

* Member firms must determine if the new GTC order terms meet their clients’ objectives and cancel
or cancel/replace orders as appropriate.