At Request of IIROC: NuVista Energy Ltd. is Unaware of Any Material Change

CALGARY, ALBERTA--(Marketwire - March 15, 2013) - NuVista Energy Ltd. (TSX:NVA) At the request of IIROC on behalf of the Toronto Stock Exchange NuVista Energy Ltd. ("NuVista") announces that it is not aware of any material change with respect to NuVista.

On March 6, 2013 NuVista issued a news release announcing its fourth quarter and year end 2012 results and on March 12, 2013 issued a news release announcing its participation in FirstEnergy East Coast Energy Conference on March 14, 2013 and an updated corporate presentation. Copies of both news releases are available at www.sedar.com and on NuVista's website www.nuvistaenergy.com.

INVESTOR INFORMATION

NuVista is an independent Canadian oil and natural gas exploration, development and production corporation with its Common Shares trading on the Toronto Stock Exchange under the symbol "NVA".