"For the past year, we've been working on this succession plan, assessing our long-term goals for growth and expansion and identifying who would be the best person to lead Interstate through its next chapter," Scott Miller said.
"Lain was the clear choice with his values-driven approach to leadership and his deep knowledge of and experience in the distribution and CPG industries. He will be an essential piece to advancing a future-ready operating model so that Interstate continues to thrive well into the future."
Hancock will lead strategic initiatives to support and accelerate the company's overall growth strategy as well as cultivate its culture, the company said.
Prior to joining Interstate Batteries, Hancock spent 12 years at Keurig Dr. Pepper, most recently as chief strategy and emerging brands officer. He previously held a management consulting position with McKinsey & Co. and spent 11 years as an aviation branch officer with the U.S. Army.
Building on his 32 years of experience at Interstate Batteries, Scott Miller will focus on increasing the board's impact and value for the 71-year-old Dallas-based company.
"Scott grew up in the Interstate system and as CEO has developed an exciting vision and strategy for growth," Norm Miller said. "I'm looking forward to seeing him and Lain join forces to accelerate our strategy and ultimately our purpose."
This will be the first time a member of the Miller family will not be in a leadership position at Interstate since 1977, when Norm Miller was appointed CEO.