Corporate Office Properties Trust announced that its Board of Trustees has elected Lisa G. Trimberger to serve on the company’s Board, effective October 1, 2017. Since 2014, Ms. Trimberger has been a Managing Member of Mack Capital Investments LLC. Ms. Trimberger retired from Deloitte & Touche LLP in 2014 after a 31-year tenure. From 1996 to 2014, Ms. Trimberger was Partner at Deloitte & Touche LLP where she also held a series of leadership positions.