Alarm.com Holdings (ALRM) stock: insider trades, news & valuation
Net sellingShare price and insider trades
Alarm.com Holdings insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $1.3M and 7 sold $9.2M of ALRM stock on the open market.
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ALRM insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $3.2M | 3 |
| Q2 2026 | — | 0 | $1.4M | 9 |
| Q1 2026 | — | 0 | $1.7M | 2 |
| Q4 2025 | $1.3M | 4 | $2.9M | 5 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 Alarm.com Holdings, Inc. insider reported open-market purchases totaling $1.3M, while 7 insiders reported sales totaling $9.2M. 10 of 19 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ALRM earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 6, 2026 | +8.5% | None | +1.5%S&P +0.5% | -1.8% |
| May 7, 2026 | -1.3% | None | +4.8%S&P +0.5% | -4.7% |
| Feb 19, 2026 | -0.9% | None | +0.8%S&P +0.5% | -2.7% |
| Nov 6, 2025 | -6.8% | None | +4.6%S&P -1.0% | +4.5% |
| Aug 7, 2025 | +0.3% | None | -2.4%S&P +0.7% | +4.7% |
| May 8, 2025 | +5.6% | None | +5.0%S&P +0.6% | +4.0% |
| Feb 20, 2025 | -2.8% | None | -1.9%S&P -2.1% | -5.1% |
| Nov 7, 2024 | +6.3% | None | +9.5%S&P +1.2% | +7.7% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 25SEC | Stephen TrundleCEO | Sell Plan | 50,000324,842 held (−13%) | $57.67 | $2.9M | -3.5% | — |
| Aug 14SEC | Kevin Christopher BradleyCFO | Sell | 5,40078,222 held (−6%) | $55.07 | $297K | +1.1% | — |
| Jul 2SEC | Kevin Christopher BradleyCFO | Sell Plan | 72483,622 held (−1%) | $48.46 | $35K | +14.8% | — |
| Jun 12SEC | Daniel RamosSee Remarks | Sell | 8,00055,099 held (−13%) | $46.23 | $370K | +20.4% | — |
| Jun 12SEC | Kevin Christopher BradleyCFO | Sell | 2,20084,346 held (−3%) | $46.15 | $102K | +20.6% | — |
| Jun 12SEC | Daniel RamosSee Remarks | Sell | 2,00053,099 held (−4%) | $46.50 | $93K | +19.7% | — |
| May 28SEC | Stephen TrundleCEO | Sell Plan | 6,073324,842 held (−2%) | $43.78 | $266K | +27.1% | — |
| May 28SEC | Daniel KerznerSee Remarks | Sell Plan | 3,944101,141 held (−4%) | $43.78 | $173K | +27.1% | — |
| May 28SEC | Daniel RamosSee Remarks | Sell Plan | 2,53263,099 held (−4%) | $43.78 | $111K | +27.1% | — |
| May 20SEC | Stephen TrundleCEO | Sell Plan | 2,944330,915 held (−1%) | $43.56 | $128K | +27.8% | — |
| May 20SEC | Daniel KerznerSee Remarks | Sell Plan | 1,915105,085 held (−2%) | $43.56 | $83K | +27.8% | — |
| May 20SEC | Daniel RamosSee Remarks | Sell Plan | 1,56165,631 held (−2%) | $43.56 | $68K | +27.8% | — |
| Mar 19SEC | Darius G NevinDirector | Sell Plan | 36,00024,375 held (−60%) | $46.17 | $1.7M | +20.5% | — |
| Mar 19SEC | Kevin Christopher BradleyCFO | Sell Plan | 1,51051,546 held (−3%) | $45.97 | $69K | +21.1% | — |
| Dec 18SEC | Jeffrey A BedellSee Remarks | Sell | 22,727505,805 held (−4%) | $51.82 | $1.2M | +7.4% | — |
| Dec 16SEC | Jeffrey A BedellSee Remarks | Sell | 2,273505,805 held (−0%) | $52.51 | $119K | +6.0% | — |
| Dec 16SEC | Stephen C. EvansDirector | Sell | 1,1546,123 held (−16%) | $52.27 | $60K | +6.5% | — |
| Nov 20SEC | Stephen TrundleCEO | Buy | 12,4691,305,343 held (+1%) | $48.53 | $605K | +14.7% | — |
| Nov 20SEC | Stephen TrundleCEO | Buy | 9,9001,315,243 held (+1%) | $48.06 | $476K | +15.8% | — |
| Nov 20SEC | Stephen TrundleCEO | Buy | 3,5311,292,874 held (+0%) | $48.57 | $172K | +14.6% | — |
| Nov 20SEC | Stephen TrundleCEO | Buy | 1001,315,343 held (+0%) | $48.66 | $5K | +14.4% | — |
| Nov 14SEC | Daniel KerznerSee Remarks | Sell | 20,00452,000 held (−28%) | $50.29 | $1.0M | +10.7% | — |
| Nov 14SEC | Daniel KerznerSee Remarks | Sell | 10,00052,000 held (−16%) | $50.33 | $503K | +10.6% | — |
Insiders at Alarm.com Holdings, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Stephen TrundleCEO | $1.3M | $3.3M | Aug 25, 2026 | — |
| Daniel KerznerSee Remarks | — | $1.8M | May 28, 2026 | — |
| Darius G NevinDirector | — | $1.7M | Mar 19, 2026 | — |
| Jeffrey A BedellSee Remarks | — | $1.3M | Dec 18, 2025 | — |
| Daniel RamosSee Remarks | — | $642K | Jun 12, 2026 | — |
| Kevin Christopher BradleyCFO | — | $503K | Aug 14, 2026 | — |
| Stephen C. EvansDirector | — | $60K | Dec 16, 2025 | — |
ALRM stock: common questions
Are Alarm.com Holdings, Inc. insiders buying ALRM stock?
In the past 12 months, 1 insiders reported open-market purchases of ALRM worth $1.3M. The latest was CEO Stephen Trundle bought $605K of ALRM at $48.53 — largest purchase by this insider in our records.
Are Alarm.com Holdings, Inc. insiders selling ALRM stock?
7 insiders reported sales worth $9.2M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ALRM's 52-week range?
Over the past year ALRM has traded between $42.13 and $57.60. It last closed at $55.65 on Oct 9, 2026.