X0306 4 2019-01-02 0 0001514416 Bandwidth Inc. BAND 0001721921 Matton W. Christopher C/O BANDWIDTH INC. 900 MAIN CAMPUS DRIVE, SUITE 500 RALEIGH NC 27606 0 1 0 0 General Counsel Restricted Stock Units 2019-01-02 4 A 0 8829 0.00 A Class A Common Stock 8829 8829 D Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock. One half of the Restricted Stock Units vest in four equal quarterly installments beginning on March 31, 2019. The remaining Restricted Stock Units vest in three equal annual installments beginning on January 2, 2020. /s/ W. Christopher Matton 2019-01-04