Disciplined Growth Investors Reports 6.6% Stake in Alarm.com Holdings, Inc.

Disciplined Growth Investors, Inc. filed a Schedule 13G/A (Amendment No. 6) on May 15, 2026, reporting a significant ownership stake in Alarm.com Holdings, Inc. (ALRM). As of the event date on March 31, 2026, the firm beneficially owns 3,268,986 shares of common stock, representing 6.6% of the company. This filing marks an increase from a previously reported 0.0% position, indicating a new or substantially restored holding for the investment adviser. The reporting person, based in Minneapolis, MN, holds sole dispositive power over all 3,268,986 shares and sole voting power over 3,063,375 shares. The filing was made under Rule 13d-1(b), certifying that the securities were acquired in the ordinary course of business and not for the purpose of changing or influencing control of the issuer. The total value of the holdings is estimated at approximately $138,997,284.72 based on the reported share count.