X0306 4 2018-09-11 0 0001459200 Alarm.com Holdings, Inc. ALRM 0001642950 Martin Jean-Paul C/O ALARM.COM HOLDINGS, INC. 8281 GREENSBORO DRIVE SUITE 100 TYSONS VA 22102 0 1 0 0 Chief Technology Officer Common Stock 2018-09-11 4 M 0 10000 11.55 A 148004 D Common Stock 2018-09-11 4 S 0 10000 56.68 D 138004 D Employee Stock Option (Right to Buy) 11.55 2018-09-11 4 M 0 10000 0.00 D 2025-05-15 Common Stock 10000 5000 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.51 - $56.95, 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 footnote (1) to this Form 4. The option is immediately exercisable. However, the option vests with respect to 20% of the shares on May 15, 2016 and, with respect to 1/48th of the remaining shares, on the first day of each month thereafter over the following four years, subject to the Reporting Person's continuous service through each vesting date. On the date of event requiring this filing, 10,000 shares were fully vested. /s/ Daniel Ramos, Attorney-in-Fact 2018-09-13