Executives at an embattled office REIT are fending off a push for board seats from one of its largest shareholders, which is also a spurned buyer. 
Orion Properties, an office REIT with a portfolio just under 8M SF, said it was rejecting the nominations of five candidates for its five-member board of directors who were put up by Kawa Capital Management, a South Florida-based alternative asset manager that offered to take the firm private in July.