Top NuVista Energy executives sold substantial shares, raising concerns about the company's future.

Senior officers of NuVista Energy Ltd. have sold significant shares recently, with Ryan Daniel Paulgaard selling 5,197 shares on May 21st for C$73,433.61 and Christopher Mark Alessandro Legrow selling 5,000 shares on May 20th for C$69,250. NuVista Energy focuses on oil and natural gas in Canada and has a market cap of C$2.81 billion. The stock has a PE ratio of 9.59 and a price-to-earnings-growth ratio of 0.59.