Diamondback Energy, an independent oil and natural gas company, recently announced a series of leadership appointments and promotions that took effect March 1.

Among the newly announced appointments, Tracy Dick will assume the role of chief accounting officer and executive vice president for Diamondback and will remain chief financial officer of Viper Energy Partners.

Additionally, Matt Zmigrosky will assume the role of executive vice president, general counsel and secretary, replacing Randall Holder, who will be retiring at the end of the first quarter of 2019 after having worked at Diamondback since November 2011, prior to the company’s initial public offering in 2012. Prior to joining Diamondback, Zmigrosky was in the private practice of law for over 15 years, most recently as a partner at Akin Gump Strauss Hauer & Feld, where he worked extensively with Diamondback and its subsidiaries.