X0306 4 2021-06-10 0 0001459200 Alarm.com Holdings, Inc. ALRM 0001429463 WU Simone C/O ALARM.COM HOLDINGS, INC. 8281 GREENSBORO DRIVE, SUITE 100 TYSONS VA 22102 1 0 0 0 Common Stock 2021-06-10 4 S 0 1594 81.43 D 2534 D Common Stock 2021-06-10 4 A 0 1787 0.00 A 4321 D Represents a grant of restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. The shares underlying this restricted stock unit award vest on the date preceding the date of the Issuer's 2022 annual meeting of stockholders, subject to the Reporting Person's continued service with the Issuer on such date. /s/ Daniel Ramos, Attorney-in-Fact 2021-06-14