X0407 4 2023-06-07 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 1 Common Stock 2023-06-07 4 S 0 868 52.00 D 4982 D Common Stock 2023-06-08 4 A 0 2837 0.00 A 7819 D These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10, 2022. 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 2024 annual meeting of stockholders, subject to the Reporting Person's continued service with the Issuer on such date. /s/ Daniel Ramos, Attorney-in-Fact 2023-06-09