X0306 4 2022-04-04 0 0001459200 Alarm.com Holdings, Inc. ALRM 0001642717 Kerzner Daniel C/O ALARM.COM HOLDINGS, INC. 8281 GREENSBORO DRIVE SUITE 100 TYSONS VA 22102 0 1 0 0 Chief Product Officer Common Stock 2022-04-04 4 S 0 2612 67.84 D 48151 D Represents the number of shares required to be sold by the Reporting Person to cover the tax withholding obligation in connection with the settlement of vested RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the Reporting Person to fund this tax withholding obligation by completing a "sell to cover" transaction with a brokerage firm designated by the Issuer. This sale does not represent a discretionary trade by the Reporting Person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.16 - $68.13, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4. /s/ Daniel Ramos, Attorney-in-Fact 2022-04-06