X0306 4 2017-11-16 0 0001368265 Clean Energy Fuels Corp. CLNE 0000898680 PICKENS BOONE C/O CLEAN ENERGY FUELS CORP. 4675 MACARTHUR COURT, SUITE 800 NEWPORT BEACH CA 92660 1 0 0 0 7.5% Convertible Promissory Note 15.80 2017-11-16 4 S 0 1 21250000 D Common Stock 1582278 0 D 7.5% Convertible Promissory Note 15.80 2017-11-16 4 S 0 1 12750000 D Common Stock 949367 0 D On November 16, 2017, the Reporting Person sold to a third party certain 7.5% Convertible Promissory Notes of the Issuer (each, a "Note"). The Note is convertible into the Issuer's common stock ("Common Stock") at the option of the holder. The entire principal balance of the Note is due and payable on July 10, 2019, and the Issuer is permitted to repay the Note in Common Stock or cash. The entire principal balance of the Note is due and payable on June 14, 2020, and the Issuer is permitted to repay the Note in Common Stock or cash. /s/ J. Nathan Jensen, Attorney-in-Fact 2017-11-17