NYC-based AG Mortgage Investment Trust (MITT 1.09%) got a new CFO this evening.

On Wednesday after close of trading, AG Mortgage announced that its chief financial officer since its 2011 IPO, Frank Stadelmaier, has resigned his post, although he will remain a member of the board of directors. Replacing Stadelmaier will be Brian C. Sigman, the former principal accounting officer and treasurer of Newcastle Investment Corp., who has now become both AG Mortgage's CFO and its principal accounting officer as well.

Welcoming Sigman aboard, AG Mortgage CEO David Roberts averred, "Brian has the skills and experience that the Company needs to continue to find the right opportunities for growth."

The company has not yet filed details of Sigman's compensation plan with the SEC.