X0609 4 2026-06-04 0001459200 Alarm.com Holdings, Inc. ALRM 0001297831 Clarke Donald E false C/O ALARM.COM HOLDINGS, INC. 8281 GREENSBORO DRIVE, SUITE 100 TYSONS VA 22102 true false false false false Common Stock 2026-06-04 4 A false 3222 0 A 18175 D Common Stock 1899 I By: Ellen C. Whittet Irrevocable Trust Common Stock 1899 I By: Thomas J. Clarke Irrevocable Trust Common Stock 1899 I By: Leanne C. Allan Irrevocable Trust Common Stock 1899 I By: Robin K. Clarke Irrevocable Trust Common Stock 1899 I By: John A. Clarke Irrevocable Trust Common Stock 7520 I By: Donald E. Clarke Irrevocable Trust 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 2027 annual meeting of stockholders, subject to the Reporting Person's continued service with the Issuer on such date. These shares are held by the Ellen C. Whittet Irrevocable Trust 11/19/2021 (the "Ellen C. Whittet Irrevocable Trust"). The Reporting Person disclaims beneficial ownership of the shares owned by the Ellen C. Whittet Irrevocable Trust except to the extent, if any, of his pecuniary interest therein. These shares are held by the Thomas J. Clarke Irrevocable Trust dtd 11/19/2021 (the "Thomas J. Clarke Irrevocable Trust"). The Reporting Person disclaims beneficial ownership of the shares owned by the Thomas J. Clarke Irrevocable Trust except to the extent, if any, of his pecuniary interest therein. These shares are held by the Leanne C. Allan Irrevocable Trust dtd 11/19/2021 (the "Leanne C. Allan Irrevocable Trust"). The Reporting Person disclaims beneficial ownership of the shares owned by the Leanne C. Allan Irrevocable Trust except to the extent, if any, of his pecuniary interest therein. These shares are held by the Robin K. Clarke Irrevocable Trust dtd 11/19/2021 (the "Robin K. Clarke Irrevocable Trust"). The Reporting Person disclaims beneficial ownership of the shares owned by the Robin K. Clarke Irrevocable Trust except to the extent, if any, of his pecuniary interest therein. These shares are held by the John A. Clarke Irrevocable Trust dtd 11/19/2021 (the "John A. Clarke Irrevocable Trust"). The Reporting Person disclaims beneficial ownership of the shares owned by the John A. Clarke Irrevocable Trust except to the extent, if any, of his pecuniary interest therein. These shares are held by the Donald E. Clarke Irrevocable Trust dated 11/19/2021 (the "Donald Clarke Trust"). The Reporting Person disclaims beneficial ownership of the shares owned by the Donald Clarke Trust except to the extent, if any, of his pecuniary interest therein. /s/ Daniel Ramos, Attorney-in-Fact 2026-06-08