 WESTLAKE VILLAGE, Calif.--BUSINESS WIRE--PennyMac Mortgage Investment Trust NYSE: PMT PMT or the Company today announced the upsizing and pricing of a private offering by its indirect wholly-owned subsidiary, PennyMac Corp., of 300 million aggregate principal amount of its Exchangeable Senior Notes due 2026 the Notes. The size of the offering was increased from the previously announced 200 million aggregate principal amount. The initial purchasers have a 13-day option to purchas 