Halcón Resources Corp. CFO Quentin R. Hicks is set to step down, marking the second CFO and fourth overall executive change for the Permian Basin oil and gas producer since the start of the year.

According to a July 9 filing, Hicks informed the Halcón board last week of his intention to leave the company. His decision comes roughly a month after Halcón appointed Richard Little as CEO to fill a vacancy created in February when the Houston-based company’s founder Floyd Wilson stepped down.

Wilson, who served as chairman, CEO and president, left the company to “pursue other interests.” His departure also included Mark Mize, Halcón’s executive vice president, CFO and treasurer, and Steve Herod, Halcón’s executive vice president of corporate development.

The slew of management changes in February came as Halcón faced pressure for a sale of the company made earlier in the month by activist investor Fir Tree Partners.

Wilson has since emerged with a new venture named Falconer Oil and Gas.

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The date of Hick’s departure from Halcón has not been set yet, the company’s filing with the U.S. Securities and Exchange Commission said.

Hicks, who joined Halcón in August 2012 after its acquisition of GeoResources Inc., was promoted to CFO following this year’s management shakeup. He previously served as executive vice president of finance, capital markets and investor relations.

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