SEC Form 4 · accession 0001193125-26-365418
Alarm.com Holdings, Inc. · ALRM
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Stephen Trundle
Officer — Chief Executive Officer · Director
Period of report
Aug 24, 2026
Accepted (ET)
Aug 25, 2026 · 5:43 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001459200
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Aug 24, 2026 | M | 50,000 | $32.17 | A | 374,842 | D | |
| Common StockF2 | Aug 24, 2026 | S | 50,000 | $57.67 | D | 324,842 | D | |
| Common StockF3 | holding | — | — | — | 1,315,343 | I | By LLC | |
| Common StockF4 | holding | — | — | — | 259,687 | I | By Gift Trust | |
| Common StockF5 | holding | — | — | — | 9,862 | I | By Footings Advancement Trust |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy)F6 | $32.17 | Aug 24, 2026 | M | 50,000 | D | — | May 14, 2027 | Common Stock | 50,000 | 0 | D |
Explanation of responses
- F1This exercise and the corresponding sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 22, 2026.
- F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.245 - $58.13, 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.
- F3These shares are owned by Backbone Partners, LLC ("Backbone"). The Reporting Person has the sole power to vote and dispose of the shares held by Backbone. The Reporting Person disclaims beneficial ownership of the shares owned by Backbone except to the extent, if any, of his pecuniary interest therein.
- F4These shares are owned by the Stephen Trundle 2015 Gift Trust (the "Trust"). Certain members of the Reporting Person's immediate family are beneficiaries of the Trust. The Reporting Person disclaims beneficial ownership of the shares owned by the Trust except to the extent, if any, of his pecuniary interest therein.
- F5These shares are owned by the Footings Advancement Trust (the "Advancement Trust"). The Reporting Person has the sole power to vote and dispose of the shares held by the Advancement Trust and certain members of the Reporting Person's immediate family are beneficiaries. The Reporting Person disclaims beneficial ownership of the shares owned by the Advancement Trust except to the extent, if any, of his pecuniary interest therein.
- F6Immediately exercisable and fully vested.