July 8 (Reuters) - Building material supplier Martin

Marietta on Tuesday appointed insider Michael Petro as

its chief financial officer, effective immediately.

He replaces James Nickolas, who stepped down in April after

nearly eight years with the company.

Petro, who joined the company in 2015, was most recently its

senior vice president of strategy and development.

Raleigh, North Carolina-based Martin Marietta is a supplier

of building materials and makes ready-mixed concrete and

asphalt.

The company also said Robert Cardin, who has been serving as

interim CFO since April, will continue in his role as senior

vice president, controller, and chief accounting officer.