X0306 4/A 2018-08-01 2018-08-02 0 0000055242 KENNAMETAL INC KMT 0001187330 LAMBERT WILLIAM M C/O MSA SAFETY 1000 CRANBERRY WOODS DRIVE CRANBERRY TWP PA 16066 1 0 0 0 Restricted Stock Units 2018-08-01 4 A 0 3313 0 A Common Stock 3313 3313 D Previous Form 4 submitted on August 2, 2018 reported an incorrect number of securities in Table II for Restricted Stock Units acquired. The number of securities for acquired Restricted Stock Units is now correctly reported. 1 - for - 1 Restricted Stock Units are subject to time-based vesting and are dispersed in three equal annual installments commencing on the first anniversary of the grant date. Michelle R. Keating 2018-08-02