Talos Energy CEO Tim Duncan departs without reason, Joseph Mills appointed as interim CEO.

Talos Energy shares fell after CEO and co-founder Tim Duncan announced his departure, without giving a reason. The company's board member Joseph Mills has been appointed interim CEO while Talos hires an executive search firm for a permanent replacement. The departure comes after billionaire Carlos Slim, a major shareholder, increased his stake in Talos amidst an equity-market selloff this month.