 Shares of CatchMark Timber Trust Inc. CTT, 3.69 shot up 27.7 in premarket trading Tuesday, after the timberlands investment company agreed to be acquired by real estate investment trust REIT PotlatchDeltic Corp. PCH, 2.98 in a stock deal valuing CatchMark at about 634.3 million. Under terms of the deal, CatchMark shareholders will receive 0.23 PotlatchDeltic shares for each CatchMark shares they own. 