Alarm.com Holdings, Inc.
ALRM- Exchange
- Nasdaq
- Industry
- Services-Prepackaged Software
- SEC CIK
- 0001459200
In the last 90 days, Alarm.com Holdings, Inc. insiders filed 0 open-market purchases and 2 sales; 316 institutions reported holding it in 13F filings for Q2 2026, worth $2.27B in total; no superinvestor holds it.
Holders of 5% or more of ALRM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Alarm.com Holdings, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 16.80%8.34M shares | −2.10 ppfrom 18.90% | Feb 5, 20252 filings | Apr 29, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 8.04%4.00M shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
| Disciplined Growth Investors Inc | 13G/A | 7.30%3.59M shares | +0.70 ppfrom 6.60% | Nov 14, 20248 filings | Aug 14, 2026 | SEC |
| Bank of Montreal | 13G/A | 6.98%3.46M shares | +1.60 ppfrom 5.38% | May 13, 20262 filings | Aug 12, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.09%2.53M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
44 Schedule 13D and 13G filings on Alarm.com Holdings, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20263:33 PM ET | Disciplined Growth Investors Inc | 13G/A | 7.30%3.59M shares | +0.70 ppfrom 6.60% | Jun 30, 2026 | SEC |
| Aug 12, 202611:08 AM ET | Bank of Montrealand 8 others | 13G/A | 6.98%3.46M shares | +1.60 ppfrom 5.38% | Jun 30, 2026 | SEC |
| May 15, 20264:03 PM ET | Disciplined Growth Investors Inc | 13G/A | 6.60%3.27M shares | −0.30 ppfrom 6.90% | Mar 31, 2026 | SEC |
| May 13, 20264:25 PM ET | Bank of Montrealand 9 others | 13G | 5.38%2.68M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20264:28 PM ET | Vanguard Capital Management LLC | 13G | 5.09%2.53M shares | New | Mar 31, 2026 | SEC |
| Apr 28, 20263:52 PM ET | Vanguard Portfolio Management LLC | 13G | 8.04%4.00M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20263:25 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20264:22 PM ET | Disciplined Growth Investors Inc | 13G/A | 6.90%3.42M shares | +0.20 ppfrom 6.70% | Dec 31, 2025 | SEC |
| Nov 14, 20253:38 PM ET | Disciplined Growth Investors Inc | 13G/A | 6.70%3.33M shares | −0.30 ppfrom 7.00% | Sep 30, 2025 | SEC |
| Aug 14, 20255:22 PM ET | Disciplined Growth Investors Inc | 13G/A | 7.00%3.49M shares | +0.20 ppfrom 6.80% | Jun 30, 2025 | SEC |
| May 15, 20253:58 PM ET | Disciplined Growth Investors Inc | 13G/A | 6.80%3.39M shares | +0.80 ppfrom 6.00% | Mar 31, 2025 | SEC |
| May 15, 202512:39 PM ET | Brown Capital Management LLC | 13G/A | 4.84%2.39M shares | 0.00 ppfrom 4.84%Below 5% | Dec 31, 2024 | SEC |
| Apr 29, 20254:56 PM ET | BlackRock, Inc. | 13G/A | 16.80%8.34M shares | −2.10 ppfrom 18.90% | Mar 31, 2025 | SEC |
| Feb 14, 20254:15 PM ET | Brown Capital Management LLC | 13G/A | 4.84%2.39M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 14, 20252:36 PM ET | Disciplined Growth Investors Inc | 13G/A | 6.00%2.94M shares | +0.50 ppfrom 5.50% | Dec 31, 2024 | SEC |
| Feb 5, 20251:23 PM ET | BlackRock, Inc. | 13G/A | 18.90%9.32M shares | – | Dec 31, 2024 | SEC |
| Nov 14, 20244:46 PM ET | Disciplined Growth Investors Inc | 13G | 5.50%2.87M shares | New | Sep 30, 2024 | SEC |
| Nov 14, 2024 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Nov 14, 2024 | William Blair Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Nov 12, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Nov 4, 2024 | Vanguard Group Inc | 13GOld format | – | – | – | SEC |
| Feb 14, 2024 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2024 | William Blair Investment Management, LLC | 13GOld format | – | – | – | SEC |
| Jan 22, 20242:03 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 20232:11 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | William Blair Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20238:52 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 20, 20239:43 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | Trundle Stephen | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | William Blair Investment Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 7, 20224:41 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| May 10, 2021 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Apr 12, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Capital World Investors | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Trundle Stephen | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Brown Capital Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | William Blair Investment Management, LLC | 13GOld format | – | New | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20212:22 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
71 notices from officers, directors and other affiliates planning to sell Alarm.com Holdings, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Nov 10, 20264:12 PM ET | Don ClarkeDirector | 4.62K | $300.3K | Nov 10, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 24, 20265:36 PM ET | Stephen TrundleOfficer · Director | 50.0K | $2.88M | Aug 24, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 12, 20265:55 PM ET | Kevin C. BradleyOfficer | 5.40K | $297.4K | Aug 12, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jul 2, 20264:12 PM ET | Kevin BradleyOfficer | 724 | $35.1K | Jul 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 12, 20264:03 PM ET | Daniel J. RamosOfficer | 2.00K | $93.0K | Jun 12, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 10, 20267:00 PM ET | Daniel J. RamosOfficer | 8.00K | $369.8K | Jun 10, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 10, 20265:53 PM ET | Kevin BradleyOfficer | 2.20K | $101.5K | Jun 10, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 26, 20264:11 PM ET | Stephen TrundleOfficer · Director | 6.07K | $265.8K | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 26, 20264:10 PM ET | Daniel RamosOfficer | 2.53K | $110.8K | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 26, 20264:03 PM ET | Jeffrey BedellOfficer | 3.57K | $156.1K | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 26, 20264:03 PM ET | Daniel KerznerOfficer | 3.94K | $172.6K | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 18, 20266:41 PM ET | Stephen TrundleOfficer · Director | 2.94K | $128.1K | May 18, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 18, 20266:41 PM ET | Jeffrey BedellOfficer | 1.92K | $83.3K | May 18, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 18, 20266:28 PM ET | Daniel KerznerOfficer | 1.92K | $83.3K | May 18, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 18, 20266:19 PM ET | Daniel RamosOfficer | 1.56K | $67.9K | May 18, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 18, 20264:33 PM ET | Darius NevinDirector | 36.0K | $1.66M | Mar 18, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 18, 20264:24 PM ET | Kevin BradleyOfficer | 1.51K | $69.4K | Mar 18, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 16, 20255:12 PM ET | Jeffrey BedellOfficer | 22.7K | $1.18M | Dec 16, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 12, 20255:01 PM ET | Jeffrey BedellOfficer | 2.27K | $119.4K | Dec 12, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 12, 20254:08 PM ET | Stephen Carl EvansDirector | 1.15K | $60.3K | Dec 12, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 13, 20254:16 PM ET | Daniel KerznerOfficer | 10.0K | $503.3K | Nov 13, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 12, 20257:27 PM ET | Daniel KerznerOfficer | 20.0K | $1.01M | Nov 12, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jul 2, 20254:23 PM ET | Kevin BradleyOfficer | 754 | $42.8K | Jul 2, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 11, 20255:51 PM ET | Stephen EvansDirector | 1.00K | $59.6K | Jun 11, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 28, 20254:08 PM ET | Siegbert ValenzuelaOfficer | 6.87K | $393.7K | May 28, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
Showing the latest 25. See the ALRM notices from the last 12 months