X0306 4 2018-02-20 1 0001022469 DELTIC TIMBER CORP DEL 0001390193 Tudor Robert B III 210 E. ELM STREET EL DORADO AR 71730 1 0 0 0 Common Stock 2018-02-20 4 D 0 13406 0.00 D 0 D On February 20, 2018, Deltic Timber Corporation ("Deltic"), Potlatch Corporation ("Potlatch"), and Portland Merger LLC completed the merger ("Merger") contemplated by the Agreement and Plan of Merger among such parties dated as of October 22, 2017 (the "Merger Agreement"). Disposed of pursuant to the Merger Agreement in which each share of Deltic common stock issued and outstanding immediately prior to the consummation of the Merger was converted into 1.8 shares of Potlatch common stock with cash paid in lieu of fractional shares. Jim F. Andrews, Jr., Attorney-in-Fact for Robert B. Tudor, III 2018-02-20