PennyMac Mortgage Investment Trust, a publicly traded real estate investment trust (NYSE: PMT) that buys and sells mortgages, appointed Catherine A. Lynch, the retired chief executive officer and chief investment officer of the National Railroad Retirement Trust, to its board of trustees. “We are delighted to welcome Catherine’s passion and wide range of expertise to PMT’s board of trustees,” said PennyMac Mortgage Investment Trust Chairman and Chief Executive Officer David A. Spector.