Alarm.com Holdings, Inc.
Alarm.com Holdings, Inc. (ALRM) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ALRM · as of Sep 30, 2025
Ownership Breakdown
309
Institutional Holders
▲ 2 vs Q2
$2.53B
Total Inst. Value
▼ $212.00M vs Q2
49.46M
Shares Outstanding
freeFloat 94.81%
47.64M
13F Shares Held
▼ 871,699 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ALRM largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. services-prepackaged software | 9.44M | 18.96% | 18.96% | $501.26B | Nov 12, 2025 | ▲ 42.4K |
VANGUARD GROUP INC services-prepackaged software | 6.23M | 12.51% | 12.51% | $330.84B | Nov 7, 2025 | ▼ 21.7K |
DISCIPLINED GROWTH INVESTORS INC /MN services-prepackaged software | 3.33M | 6.69% | 6.69% | $176.87B | Nov 14, 2025 | ▼ 159.7K |
STATE STREET CORP services-prepackaged software | 1.98M | 3.99% | 3.99% | $105.36B | Nov 14, 2025 | ▲ 10.4K |
MORGAN STANLEY services-prepackaged software | 1.33M | 2.66% | 2.66% | $70.41B | May 27, 2026 | ▲ 125.4K |
GENEVA CAPITAL MANAGEMENT LLC services-prepackaged software | 1.30M | 2.61% | 2.61% | $68.94B | Nov 13, 2025 | ▼ 6.1K |
GEODE CAPITAL MANAGEMENT, LLC services-prepackaged software | 1.21M | 2.43% | 2.43% | $64.36B | Nov 12, 2025 | ▲ 10.0K |
BROWN CAPITAL MANAGEMENT LLC services-prepackaged software | 1.13M | 2.26% | 2.26% | $59.83B | Nov 4, 2025 | ▼ 576.4K |
DIMENSIONAL FUND ADVISORS LP services-prepackaged software | 1.08M | 2.17% | 2.17% | $57.33B | Nov 12, 2025 | ▲ 43.7K |
BURGUNDY ASSET MANAGEMENT LTD. services-prepackaged software | 999.2K | 2.01% | 2.01% | $58.58B | Nov 12, 2025 | ▲ 13.3K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
29
Increased
+2.12M shares0
New Positions
first time holders21
Decreased
−1.26M shares0
Sold Out
fully exitedNet shares change (top 50)
+869.4K
+2.12M / −1.26M
Net new holders
+8
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ALRM insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
4
Buy transactions
6
Sell transactions
0.67
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Whall Timothy J. director | Jun 4, 2026 | Award | 3,222 | — | — | 14.4K | Form 4 ↗ |
NEVIN DARIUS G director | Jun 4, 2026 | Award | 3,222 | — | — | 27.6K | Form 4 ↗ |
Clarke Donald E director | Jun 4, 2026 | Award | 3,222 | — | — | 18.2K | Form 4 ↗ |
McAdam Timothy P director | Jun 4, 2026 | Award | 3,222 | — | — | 103.8K | Form 4 ↗ |
WU Simone director | Jun 4, 2026 | Award | 3,222 | — | — | 15.9K | Form 4 ↗ |
Harper Cecile Burleigh director | Jun 4, 2026 | Award | 3,222 | — | — | 8.0K | Form 4 ↗ |
Evans Stephen C. director | Jun 4, 2026 | Award | 3,222 | — | — | 9.3K | Form 4 ↗ |
Trundle Stephen Chief Executive Officer | May 26, 2026 | Sale | 6,073 | $43.78 | $265.9K | 324.8K | Form 4 ↗ |
Ramos Daniel See Remarks | May 26, 2026 | Sale | 2,532 | $43.78 | $110.9K | 63.1K | Form 4 ↗ |
Kerzner Daniel See Remarks | May 26, 2026 | Sale | 3,944 | $43.78 | $172.7K | 101.1K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Alarm.com Holdings, Inc. (ALRM) is primarily owned by institutional investors, who hold approximately 96.3% of total shares outstanding. Company insiders own approximately 5.19%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Alarm.com Holdings, Inc. is BLACKROCK, INC., holding approximately 9.44 million shares — equal to 18.96% of outstanding shares — as of September 30, 2025.
A total of 309 institutional investors currently hold ALRM stock, with a combined institutional value of approximately $2.53 billion as of the most recent 13F filing period.
Frequently asked questions
ALRM ownershipAlarm.com Holdings, Inc. (ALRM) is primarily owned by institutional investors, who hold approximately 96.3% of shares. The largest shareholder is BLACKROCK, INC. with a 18.96% stake. Company insiders hold 5.19%. Data sourced from SEC Form 13F as of September 30, 2025.