X0306 4 2018-08-02 0 0000899460 MANNKIND CORP MNKD 0001712607 McCauley Patrick 30930 RUSSELL RANCH ROAD WESTLAKE VILLAGE CA 91362 0 1 0 0 Chief Commercial Officer Common Stock, $0.01 Par Value 2018-08-02 4 P 0 5000 1.31 A 31041 D Employee Stock Option (right to buy) 1.47 2018-08-02 4 A 0 45025 1.47 A 2018-08-02 2027-08-24 Stock Options 45025 45025 D The reporting person purchased shares through the Company's Employee Stock Purchase Plan on August 2, 2018, representing the maximum allowable under the Plan for this period. On August 24, 2017, the reporting person was granted an option that vests upon the achievement of certain defined performance milestones. On August 2, 2018, one of the defined performance milestones was met, resulting in the partial vesting of the option. /s/ Patrick McCauley 2018-08-06