X0306 4 2021-06-10 0 0001459200 Alarm.com Holdings, Inc. ALRM 0001184810 NEVIN DARIUS G C/O ALARM.COM HOLDINGS, INC. 8281 GREENSBORO DRIVE SUITE 100 TYSONS VA 22102 1 0 0 0 Common Stock 2021-06-10 4 A 0 1787 0.00 A 17091 D Common Stock 2500 I By G3 Investment Holdings, LLC 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. These securities are directly held by G3 Investment Holdings, LLC ("G3 Investments"). The reporting person is a co-owner of G3 Investments, and shares voting and dispositive power over the securities held by G3 Investments. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. /s/ Daniel Ramos, Attorney-in-Fact 2021-06-14