ALRM · Insider trading · 13F holders · Congress trades
Alarm.com Holdings, Inc. (ALRM)
Who is buying and selling ALRM: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 11
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $3.2M
- Congress trades, 12 months
- 1
ALRM at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 ALRM insiders filed 2 sales worth $3.2M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 11 13F filers hold ALRM among their 50 largest positions, worth $249.4M combined. The biggest bets by portfolio weight are Disciplined Growth Investors Inc /mn (2.8%), Caden Capital Partners, LP (2.6%) and Montanaro Asset Management Ltd (1.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- Members of Congress have disclosed 1 ALRM trade since 2019, 1 purchase and 0 sales in the past year; the latest was Greg Gianforte (R-MT), buying $100K–250K on Jul 22, 2019.
- ALRM last closed at $66.54 on Oct 29, 2026.
ALRM insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 ALRM insiders filed 2 sales worth $3.2M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 25, 2026 | Trundle Stephen | Chief Executive Officer, Director | Sale10b5-1 | 50,000 | $57.67 | $2.9M | SEC |
| Aug 14, 2026 | Bradley Kevin Christopher | Chief Financial Officer | Sale | 5,400 | $55.07 | $297K | SEC |
Who owns ALRM? Hedge funds and superinvestors
11 13F filers hold ALRM among their 50 largest positions, worth $249.4M combined. The biggest bets by portfolio weight are Disciplined Growth Investors Inc /mn (2.8%), Caden Capital Partners, LP (2.6%) and Montanaro Asset Management Ltd (1.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Disciplined Growth Investors Inc /mnAsset manager | 2.8% | $167.5M | 3,585,614 | +9.7% shares | Q2 2026 |
| Geneva Capital Management LLCAsset manager | 0.9% | $38.7M | 828,409 | -22.6% shares | Q2 2026 |
| Centaurus Financial, Inc.Wealth manager | 0.5% | $12.3M | 263,992 | -2.9% shares | Q2 2026 |
| Evanson Financial, LLCWealth manager | 0.4% | $8.3M | 152,967 | -0.3% shares | Q3 2026 |
| Evanson Asset Management, LLCAsset manager | 0.4% | $7.0M | 162,538 | -3.8% shares | Q1 2026 |
| Winmill & Co. IncInvestment manager | 1.3% | $5.9M | 126,100 | +0.0% shares | Q2 2026 |
| Montanaro Asset Management LtdAsset manager | 1.6% | $5.2M | 111,197 | -21.5% shares | Q2 2026 |
| Summit Creek Advisors LLCInstitutional asset manager | 0.9% | $2.8M | 59,056 | -69.1% shares | Q2 2026 |
| Argos Wealth Advisors, LLCWealth manager | 0.2% | $849K | 18,175 | — | Q2 2026 |
| Passive Capital Management, LLC.Wealth manager | 0.2% | $609K | 11,928 | — | Q2 2026 |
| Caden Capital Partners, LPHedge fund | 2.6% | $216K | 4,620 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 9, Q1 2026: 1). Screen ALRM in the grand portfolio →
ALRM stock trades by members of Congress
Members of Congress have disclosed 1 ALRM trade since 2019, 1 purchase and 0 sales in the past year; the latest was Greg Gianforte (R-MT), buying $100K–250K on Jul 22, 2019.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Jul 29, 2019 | Greg GianforteR-MT · House | Buy | $100K–250K | Jul 22, 2019 | +28.3% |
ALRM questions and answers
Are insiders buying ALRM stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 ALRM insiders filed 2 sales worth $3.2M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own ALRM?
11 13F filers hold ALRM among their 50 largest positions, worth $249.4M combined. The biggest bets by portfolio weight are Disciplined Growth Investors Inc /mn (2.8%), Caden Capital Partners, LP (2.6%) and Montanaro Asset Management Ltd (1.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded ALRM?
Members of Congress have disclosed 1 ALRM trade since 2019, 1 purchase and 0 sales in the past year; the latest was Greg Gianforte (R-MT), buying $100K–250K on Jul 22, 2019.
Who is the largest holder of ALRM?
Among 13F filers, Disciplined Growth Investors Inc /mn reports the largest ALRM position, $167.5M (3,585,614 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Disciplined Growth Investors Inc /mn's: 2.8% of its portfolio.
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