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ALRM

Alarm.com Holdings, Inc.

TechnologyRussell 2000

Alarm.com Holdings, Inc. insider trading

Alarm.com Holdings, Inc. files with the SEC as a Services-Prepackaged Software company headquartered in Tysons, VA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent ALRM insider transactions

5 insiders traded ALRM on the open market between Mar 18, 2026 and Aug 24, 2026 — 14 sales worth $6.3M, of which 10 were pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$6.3M

10 of 14 on a 10b5-1 plan

Net
−$6.3M
Insiders
5

Open-market purchases (code P) and sales (code S) from Alarm.com Holdings, Inc.'s own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 22, 2026. The live dashboard shows new filings the moment they clear.

Every ALRM Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

ALRM insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 8 insiders traded ALRM on the open market: 4 purchases worth $1.3M and 41 sales worth $15.2M, 24 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 4 purchases ($1.3M) and 17 sales ($6M), by 7 insiders.

QuarterBoughtSold
Q2 2026—−$1.4M9 sales · 6 on a plan
Q1 2026—−$1.7M2 sales · all on a plan
Q4 2025+$1.3M4 buys−$2.9M5 sales
Q3 2025—−$42.8K1 sale · all on a plan
Q2 2025—−$2.2M16 sales · 15 on a plan
Q1 2025—−$294K2 sales
Q4 2024—−$5.6M4 sales
Q3 2024—−$1M2 sales
Largest purchase
+$605.1K of ALRM by Trundle Stephen (Chief Executive Officer · Director) on Nov 19, 2025.
Largest sale
−$3.1M of ALRM by Trundle Stephen (Chief Executive Officer · Director) on Dec 10, 2024.

Open-market transactions through Jun 30, 2026most recent first

  • Bedell Jeffrey A

    President, Ventures Business and Corporate Strategy

    −$1.2M

    Dec 16, 2025

    22,727 sh · $51.82

  • Bedell Jeffrey A

    President, Ventures Business and Corporate Strategy

    −$119.4K

    Dec 12, 2025

    2,273 sh · $52.51

  • Evans Stephen C.

    Director

    −$60.3K

    Dec 12, 2025

    1,154 sh · $52.27

  • Trundle Stephen

    Chief Executive Officer · Director

    +$475.8K

    Nov 20, 2025

    9,900 sh · $48.06

  • Trundle Stephen

    Chief Executive Officer · Director

    +$4.9K

    Nov 20, 2025

    100 sh · $48.66

  • Trundle Stephen

    Chief Executive Officer · Director

    +$605.1K

    Nov 19, 2025

    12,469 sh · $48.53

  • Trundle Stephen

    Chief Executive Officer · Director

    +$171.5K

    Nov 18, 2025

    3,531 sh · $48.57

  • Kerzner Daniel

    President, Platforms Business

    −$503.3K

    Nov 13, 2025

    10,000 sh · $50.33

  • Kerzner Daniel

    President, Platforms Business

    −$1M

    Nov 12, 2025

    20,004 sh · $50.29

  • Bradley Kevin Christopher10b5-1

    Chief Financial Officer

    −$42.8K

    Jul 02, 2025

    754 sh · $56.75

  • Evans Stephen C.

    Director

    −$59.6K

    Jun 11, 2025

    1,000 sh · $59.64

  • Ramos Daniel10b5-1

    Officer

    −$403.8K

    May 27, 2025

    7,000 sh · $57.68

  • Trundle Stephen10b5-1

    Chief Executive Officer · Director

    −$206.5K

    May 23, 2025

    3,644 sh · $56.66

  • Kerzner Daniel10b5-1

    President, Platforms Business

    −$125.4K

    May 23, 2025

    2,213 sh · $56.66

  • Bedell Jeffrey A10b5-1

    President, Ventures Business and Corporate Strategy

    −$124.9K

    May 23, 2025

    2,204 sh · $56.66

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Alarm.com Holdings, Inc. company record

SEC industry classification
Services-Prepackaged Software
Headquarters
Tysons, VA
Incorporated in
DE
Listed on
Nasdaq
SEC Central Index Key
0001459200

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

After insiders bought ALRM

What the stock actually did in the 90 days following each open-market purchase

Don't check ALRM — let it ping you

Get told the moment an insider moves on ALRM

Pro watches Alarm.com Holdings, Inc. for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add ALRM to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track ALRM on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read ALRM insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are ALRM insiders buying or selling?
Between Mar 18, 2026 and Aug 24, 2026, 5 Alarm.com Holdings, Inc. insiders made no open-market purchases and 14 sales worth $6.3M, a net sale of $6.3M. 10 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much ALRM stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 8 Alarm.com Holdings, Inc. insiders made 4 open-market purchases worth $1.3M and 41 sales worth $15.2M. 24 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: 4 purchases ($1.3M) and 17 sales ($6M). The largest purchase was Trundle Stephen buying $605.1K on Nov 19, 2025. The largest sale was Trundle Stephen selling $3.1M on Dec 10, 2024.
What was the largest recent ALRM insider trade?
Trundle Stephen (Chief Executive Officer · Director) sold $2.9M of ALRM stock on Aug 24, 2026 at about $57.67 a share, under a pre-scheduled 10b5-1 plan.
When did an insider last buy ALRM shares?
No open-market purchase by a Alarm.com Holdings, Inc. insider appears in the filings from Mar 18, 2026 to Aug 24, 2026 — every recorded open-market transaction in that period was a sale. Before that, the most recent purchase in SEC's data was Trundle Stephen buying $475.8K on Nov 20, 2025.
Where does ALRM insider trading data come from?
From the Form 4 filings Alarm.com Holdings, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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