Alarm.com Holdings Inc
Ownership
Ownership Structure
Who owns Alarm.com Holdings Inc (ALRM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 94.9% of the shares are freely tradable; institutional investors hold 99.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 19.34 | 9,492,105 | +3.9 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 8.22 | 4,035,026 | +2.0 | 06/30/2026 |
| Disciplined Growth Investors Inc | 7.30 | 3,585,614 | +9.7 | 06/30/2026 |
| Bank of Montreal | 7.04 | 3,455,190 | +30.0 | 06/30/2026 |
| BMO Capital Markets Corp. | 7.04 | 3,455,190 | +30.0 | 06/30/2026 |
| State Street Corp | 4.46 | 2,188,123 | +7.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.36 | 2,141,371 | -0.6 | 06/30/2026 |
| Geode Capital Management, LLC | 2.73 | 1,338,291 | +6.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.97 | 2,930,505 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.06 | 1,502,917 | +0.4 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Trundle Stephen | Chief Executive Officer | 322,842 | 21,307,572 $ | Sep 2, 2026 | direct |
| Bradley Kevin Christopher | Chief Financial Officer | 78,222 | 5,162,652 $ | Aug 12, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | Trundle Stephen | Chief Executive Officer | Other | 2,000 | 0.00 | – |
| Aug 24, 2026 | Trundle Stephen | Chief Executive Officer | Sell | 50,000 | 57.67 | 2,883,500 |
| Aug 24, 2026 | Trundle Stephen | Chief Executive Officer | Other | 50,000 | 32.17 | 1,608,500 |
| Aug 12, 2026 | Bradley Kevin Christopher | Chief Financial Officer | Sell | 5,400 | 55.07 | 297,378 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.