ALRM insider buying and SEC filings, explained
Alarm.com Holdings, Inc. · CIK 1459200
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$1.3M
Insiders who bought
1
Sold (not marked 10b5-1)
$1.9M
Planned sales (10b5-1)
$5.5M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 24, 2026 | Planned (10b5-1) | Stephen Trundle (CEO and Director) sold 50,000 shares at about $57.67 ($2.9M), marked as a 10b5-1 plan trade. Holdings down 13% to 324,842 shares. | SEC filing Filed Aug 25, 2026 |
| Aug 12, 2026 | Sale | Kevin Christopher Bradley (CFO) sold 5,400 shares at about $55.07 ($297K). Holdings down 6% to 78,222 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 14, 2026 |
| Jul 2, 2026 | Planned (10b5-1) | Kevin Christopher Bradley (CFO) sold 724 shares at about $48.46 ($35K), marked as a 10b5-1 plan trade. Holdings down 1% to 83,622 shares. | SEC filing Filed Jul 2, 2026 |
| Jun 10–12, 2026 | Sale | Daniel Ramos (Chief Legal and Compliance Officer) sold 10,000 shares between Jun 10 and Jun 12 at about $46.28 ($463K). Holdings down 16% to 53,099 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 12, 2026 |
| Jun 10, 2026 | Sale | Kevin Christopher Bradley (CFO) sold 2,200 shares at $46.15 ($102K). Holdings down 3% to 84,346 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 12, 2026 |
| May 26, 2026 | Planned (10b5-1) | Stephen Trundle (CEO and Director) sold 6,073 shares at about $43.78 ($266K), marked as a 10b5-1 plan trade. Holdings down 2% to 324,842 shares. | SEC filing Filed May 28, 2026 |
| May 26, 2026 | Planned (10b5-1) | Daniel Ramos (Chief Legal and Compliance Officer) sold 2,532 shares at about $43.78 ($111K), marked as a 10b5-1 plan trade. Holdings down 4% to 63,099 shares. | SEC filing Filed May 28, 2026 |
| May 26, 2026 | Planned (10b5-1) | Daniel Kerzner (President / COO) sold 3,944 shares at about $43.78 ($173K), marked as a 10b5-1 plan trade. Holdings down 4% to 101,141 shares. | SEC filing Filed May 28, 2026 |
| May 18, 2026 | Planned (10b5-1) | Daniel Kerzner (President / COO) sold 1,915 shares at about $43.56 ($83K), marked as a 10b5-1 plan trade. Holdings down 2% to 105,085 shares. | SEC filing Filed May 20, 2026 |
| May 18, 2026 | Planned (10b5-1) | Daniel Ramos (Chief Legal and Compliance Officer) sold 1,561 shares at about $43.56 ($68K), marked as a 10b5-1 plan trade. Holdings down 2% to 65,631 shares. | SEC filing Filed May 20, 2026 |
| May 18, 2026 | Planned (10b5-1) | Stephen Trundle (CEO and Director) sold 2,944 shares at about $43.56 ($128K), marked as a 10b5-1 plan trade. Holdings down 1% to 330,915 shares. | SEC filing Filed May 20, 2026 |
| Mar 18, 2026 | Planned (10b5-1) | Kevin Christopher Bradley (CFO) sold 1,510 shares at about $45.97 ($69K), marked as a 10b5-1 plan trade. Holdings down 3% to 51,546 shares. | SEC filing Filed Mar 19, 2026 |
| Mar 18, 2026 | Planned (10b5-1) | Darius G. Nevin (Director) sold 36,000 shares at about $46.17 ($1.7M), marked as a 10b5-1 plan trade. Holdings down 60% to 24,375 shares. | SEC filing Filed Mar 19, 2026 |
| Dec 12, 2025 | Sale | Stephen C. Evans (Director) sold 1,154 shares at about $52.27 ($60K). Holdings down 16% to 6,123 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 16, 2025 |
| Nov 18–20, 2025 | Purchase (code P) | Stephen Trundle (CEO and Director) bought 26,000 shares indirectly (by entity) between Nov 18, 2025 and Nov 20, 2025 at about $48.36 ($1.3M), reported as a purchase (code P). Holdings by entity up 2% to 1,315,343 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 20, 2025 |
| Nov 12, 2025 | Sale | Daniel Kerzner (President / COO) sold 20,004 shares at about $50.29 ($1.0M). Holdings down 28% to 52,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 14, 2025 |
21 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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