X0306 4 2017-03-03 0 0001315257 Koppers Holdings Inc. KOP 0001349675 Hyde Leslie S 436 SEVENTH AVENUE PITTSBURGH PA 15219 0 1 0 0 VP, Risk Management, Deputy GC Common Stock 2017-03-03 4 F 0 204.9587 44.10 D 21727.4181 D Restricted Stock Units 2017-03-03 4 A 0 1064 0.00 A Common Stock 1064 1064 D Employee Stock Options (Rights to Buy) 44.10 2017-03-03 4 A 0 3935 0.00 A 2027-03-02 Common Stock 3935 3935 D Shares surrendered to the issuer by the reporting person as payment for tax withholding related to the vesting of time-based restricted stock units ("RSUs"). Each 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