Evan Spiegel, co-founder and chief executive officer of Snap Inc., speaks during the New Work Summit in Half Moon Bay, California, U.S., on Monday, Feb. 25, 2019.

Check out the companies making headlines midday Monday:

Devon Energy, WPX Energy — Shares of Devon jumped 11.1% while WPX gained 16.4% after the two companies announced their intention to merge. The all-stock transaction gives the combined company, which will retain Devon's name, an enterprise value of roughly $12 billion.