X0306 4 2017-03-03 0 0001315257 Koppers Holdings Inc. KOP 0001633994 NIELSEN CHRISTIAN A 436 SEVENTH AVENUE PITTSBURGH PA 15219 0 1 0 0 VP, European Operations Restricted Stock Units 2017-03-03 4 A 0 1147 0.00 A Common Stock 1147 1147 D Employee Stock Options (Rights to Buy) 44.10 2017-03-03 4 A 0 4240 0.00 A 2027-03-02 Common Stock 4240 4240 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Koppers Holdings Inc. common stock (the "Common Stock"), or its equivalent cash value. The reporting person was granted RSUs on March 3, 2017 under the Koppers Holdings Inc. 2005 Long Term Incentive Plan, as Amended and Restated. RSUs vest in four equal annual installments, with the first installment vesting on March 3, 2018. Upon vesting, the RSUs will be paid out in whole shares of Common Stock or cash as may be determined by the Company. The reporting person was granted stock options on March 3, 2017, which will vest in four equal annual installments, with the first installment vesting on March 3, 2018. /s/ Steven R. Lacy, Attorney-in-Fact 2017-03-07