# EDGAR Filing Document

**Accession Number:** 0001643898
**File Stem:** 0001193125-25-290133
**Filing Date:** 2025-11
**Character Count:** 8934
**Document Hash:** 1525756b5aa13a6e5fb86033f435c4e7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-290133.hdr.sgml**: 20251120

**ACCESSION NUMBER**: 0001193125-25-290133

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251118

**FILED AS OF DATE**: 20251120

**DATE AS OF CHANGE**: 20251120

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Trundle Stephen
- **CENTRAL INDEX KEY:** 0001643898

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37461
- **FILM NUMBER:** 251504224

**MAIL ADDRESS:**
- **STREET 1:** C/O ALARM.COM HOLDINGS, INC.
- **STREET 2:** 8281 GREENSBORO DRIVE, SUITE 100
- **CITY:** TYSONS
- **STATE:** VA
- **ZIP:** 22102
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Alarm.com Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001459200
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 264247032
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 8281 GREENSBORO DRIVE
- **STREET 2:** SUITE 100
- **CITY:** TYSONS
- **STATE:** VA
- **ZIP:** 22102
- **BUSINESS PHONE:** 877-389-4033

**MAIL ADDRESS:**
- **STREET 1:** 8281 GREENSBORO DRIVE
- **STREET 2:** SUITE 100
- **CITY:** TYSONS
- **STATE:** VA
- **ZIP:** 22102

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Trundle Stephen<br><sub>(Last) (First) (Middle)</sub><br>C/O ALARM.COM HOLDINGS, INC.<br>8281 GREENSBORO DRIVE SUITE 100<br><sub>(Street)</sub><br>TYSONS, VA 22102<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-11-18 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Alarm.com Holdings, Inc. [ ALRM ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-11-18 |  | P |  | 3531 | A | 48.57<sup>(1)</sup> | 1292874 | I | By LLC<sup>(2)</sup> |
| Common Stock | 2025-11-19 |  | P |  | 12469 | A | 48.53<sup>(3)</sup> | 1305343 | I | By LLC<sup>(2)</sup> |
| Common Stock | 2025-11-20 |  | P |  | 9900 | A | 48.06<sup>(4)</sup> | 1315243 | I | By LLC<sup>(2)</sup> |
| Common Stock | 2025-11-20 |  | P |  | 100 | A | $48.66 | 1315343 | I | By LLC<sup>(2)</sup> |
| Common Stock |  |  |  |  |  |  |  | 268859 | D |  |
| Common Stock |  |  |  |  |  |  |  | 259687 | I | By Gift Trust<sup>(5)</sup> |
| Common Stock |  |  |  |  |  |  |  | 9862 | I | By Footings Advancement Trust<sup>(6)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $48.2917 - $48.73, 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 purchased at each separate price within the range set forth in this footnote to this Form 4.

(2) These 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.

(3) The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $48.14 - $48.92, 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 purchased at each separate price within the range set forth in this footnote to this Form 4.

(4) The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $47.615 - $48.545, 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 purchased at each separate price within the range set forth in this footnote to this Form 4.

(5) These 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.

(6) These 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.

**Remarks:**
The Reporting Person has agreed to voluntarily disgorge to the Issuer all statutory "profits" pursuant to Section 16(b) of the Securities Exchange Act of 1934, as amended, that resulted from the transactions reported herein.

**Signature:** /s/ Daniel Ramos, Attorney-in-Fact  
**Date:** 2025-11-20

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**