Bexil American Mortgage Inc., with offices here and in Alabama, said it struck a partnership with Big Moat REIT, a private Maryland-based mortgage real estate trust focused on investment in residential mortgage assets. Bexil American said with financing from Big Moat, it expects to fund the expansion of its Castle Mortgage Corp. unit. The mortgage originator and servicer does business in 24 states.

Bexil American and Castle are engaged in originating, pooling, securitizing, and servicing more than $400 million in residential mortgages.

The company also appointed Alex Rozek as executive chairman of Bexil American’s board of directors.

Rozek has served on the company’s board since its inception in October 2011, the company said.