X0306 4/A 2015-09-02 2015-09-03 0 0000949428 CLEAN DIESEL TECHNOLOGIES INC CDTI 0001649741 Bippus Hans Eric C/O CLEAN DIESEL TECHNOLOGIES, INC. 1621 FISKE PLACE OXNARD CA 93033 0 1 0 0 Exec VP of Sales & Marketing Restricted Share Units 2015-09-02 4 A 0 20000 0 A Common Stock 20000 20000 D This amended Form 4 is being filed to correct the vesting for the Restricted Share Unit ("RSU") award reported in Table II of the original Form 4. Only the lines of the original Form 4 requiring correction are being restated on this amended Form 4. Each RSU represents a contingent right to receive one share of CDTI common stock. RSUs vest as to 100% on March 2, 2016. Issuance to occur as soon as practicable following the date of vesting and subject to compliance with Issuer's Insider Trading Policy, but in all cases within two and one-half months following the end of the Issuer's tax year that includes the date such RSUs vest. RSUs that have not vested at the time of the reporting person's termination of service, for any or no reason other than death or change in control, will be forfeited. /s/Kristi Cushing for Hans Eric Bippus 2015-09-08