Deanna Mulligan is on track to become chief executive officer (CEO) of Guardian Life Insurance Company of America.

Guardian, New York, says Mulligan, 47, will become president and chief operating officer of the Mulligancompany Monday.

Dennis Manning, who is now Guardian’s president and CEO, will continue to be the CEO, and he also will be the company’s chairman.

The Guardian board plans to make Mulligan CEO July 1, 2011, and to appoint her to the board at that time, the company says.

Manning would continue to be the executive chairman until Feb. 1, 2012, then retire, the company says.

“Deanna is an inspirational leader, understands the culture and values of our company and is committed to the mutual company structure,” Manning says in a statement about Mulligan.

Mulligan has been an executive vice president in charge of the individual life and disability business at Guardian since July 2008.

Mulligan also has run a consulting firm and held executive positions at New York Life Insurance Company, New York, and AXA Financial, New York.

Mulligan has a bachelor’s degree in business from the University of Nebraska and a master’s degree in business from Stanford University.

- ALLISON BELL