X0508 4 2024-03-07 0 0001459200 Alarm.com Holdings, Inc. ALRM 0001304655 Valenzuela Steve C/O ALARM.COM HOLDINGS, INC. 8281 GREENSBORO DRIVE, SUITE 100 TYSONS VA 22102 0 1 0 0 Chief Financial Officer 0 Common Stock 2024-03-07 4 M 0 208.0000 59.1000 A 37708.0000 D Common Stock 2024-03-07 4 M 0 208.0000 37.9400 A 37916.0000 D Common Stock 2024-03-07 4 M 0 208.0000 51.5000 A 38124.0000 D Common Stock 2024-03-07 4 M 0 208.0000 65.0300 A 38332.0000 D Common Stock 2024-03-07 4 S 0 832.0000 74.5800 D 37500.0000 D Stock Option (Right to Buy) 59.1000 2024-03-07 4 M 0 208.0000 0.0000 D 2032-05-14 Common Stock 208.0000 7917.0000 D Stock Option (Right to Buy) 37.9400 2024-03-07 4 M 0 208.0000 0.0000 D 2030-03-31 Common Stock 208.0000 2709.0000 D Stock Option (Right to Buy) 51.5000 2024-03-07 4 M 0 208.0000 0.0000 D 2033-05-22 Common Stock 208.0000 10417.0000 D Stock Option (Right to Buy) 65.0300 2024-03-07 4 M 0 208.0000 0.0000 D 2029-03-31 Common Stock 208.0000 209.0000 D The shares underlying the option exercised in this transaction were fully vested and exercisable. The remainder of the shares underlying the option shall continue to vest and become exercisable ratably on a monthly basis on the first day of each month through May 1, 2027, subject to the Reporting Person's continued service with the Issuer through each such date. The shares underlying the option exercised in this transaction were fully vested and exercisable. The remainder of the shares underlying the option shall continue to vest and become exercisable ratably on a monthly basis on the first day of each month through April 1, 2025, subject to the Reporting Person's continued service with the Issuer through each such date. The shares underlying the option exercised in this transaction were fully vested and exercisable. The remainder of the shares underlying the option shall continue to vest and become exercisable ratably on a monthly basis on the first day of each month through May 1, 2028, subject to the Reporting Person's continued service with the Issuer through each such date. The shares underlying the option exercised in this transaction were fully vested and exercisable. The remainder of the shares underlying the option shall continue to vest and become exercisable ratably on a monthly basis on the first day of each month through April 1, 2024, subject to the Reporting Person's continued service with the Issuer through each such date. /s/ Daniel Ramos, Attorney-in-Fact 2024-03-08