Alarm.com CEO sells 50K shares at $57.67
Alarm.com Holdings, Inc. (ALRM) Chief Executive Officer Stephen Trundle reported an option exercise-and-sale transaction.
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Form Type
4
Rhea-AI Filing Summary
Alarm.com Holdings, Inc. (ALRM) Chief Executive Officer Stephen Trundle reported an option exercise-and-sale transaction. On August 24, 2026 he exercised options for 50,000 shares of common stock at an exercise price of $32.17 per share and sold 50,000 shares at a weighted average price of $57.67 per share, all pursuant to a Rule 10b5-1 trading plan adopted on May 22, 2026. Following these transactions, indirect holdings reported include shares held by Backbone Partners, LLC, the Stephen Trundle 2015 Gift Trust, and the Footings Advancement Trust, for which he disclaims beneficial ownership except for any pecuniary interest.
Insider Trade Summary 10b5-1
Exercise and Sale: 50,000 shares ($1.27M approx. pre-tax spread)
Exercise and Sale
6 txns
Insider
Trundle Stephen
Role
Chief Executive Officer
Sold
50,000 shs ($2.88M)
Approx. gross sale proceeds
$2.88M
Approx. exercise cost
$1.61M
Approx. pre-tax spread
$1.27M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (Right to Buy) F1, F6 | 50,000 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 50,000 | $32.17 | $1.61M |
| Sale | Common Stock F1, F2 | 50,000 | $57.67 | $2.88M |
| holding | Common Stock F3 | -- | -- | -- |
| holding | Common Stock F4 | -- | -- | -- |
| holding | Common Stock F5 | -- | -- | -- |
Holdings After Transaction:
Stock Option (Right to Buy) — 0 contracts (Direct);
Common Stock — 324,842 shares (Direct);
Common Stock — 1,315,343 shares (Indirect, By LLC);
Common Stock — 259,687 shares (Indirect, By Gift Trust);
Common Stock — 9,862 shares (Indirect, By Footings Advancement Trust)
Footnotes (6)
- F1. This exercise and the corresponding sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 22, 2026.
- F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.245 - $58.13, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.
- F3. These shares are owned by Backbone Partners, LLC ("Backbone"). The Reporting Person has the sole power to vote and dispose of the shares held by Backbone. The Reporting Person disclaims beneficial ownership of the shares owned by Backbone except to the extent, if any, of his pecuniary interest therein.
- F4. These shares are owned by the Stephen Trundle 2015 Gift Trust (the "Trust"). Certain members of the Reporting Person's immediate family are beneficiaries of the Trust. The Reporting Person disclaims beneficial ownership of the shares owned by the Trust except to the extent, if any, of his pecuniary interest therein.
- F5. These shares are owned by the Footings Advancement Trust (the "Advancement Trust"). The Reporting Person has the sole power to vote and dispose of the shares held by the Advancement Trust and certain members of the Reporting Person's immediate family are beneficiaries. The Reporting Person disclaims beneficial ownership of the shares owned by the Advancement Trust except to the extent, if any, of his pecuniary interest therein.
- F6. Immediately exercisable and fully vested.
Key Figures
Options exercised: 50,000 shares
Option exercise price: $32.17 per share
Shares sold: 50,000 shares
+4 more
7 metrics
Options exercised
50,000 shares
Stock options for Alarm.com common stock exercised on August 24, 2026
Option exercise price
$32.17 per share
Exercise price for 50,000 Alarm.com stock options
Shares sold
50,000 shares
Alarm.com common stock sold on August 24, 2026
Weighted average sale price
$57.67 per share
Weighted average price for 50,000 Alarm.com shares sold; individual trades $57.245–$58.13
Backbone Partners, LLC indirect holding
1,315,343 shares
Alarm.com shares held by Backbone Partners, LLC; Trundle disclaims beneficial ownership except for pecuniary interest
2015 Gift Trust indirect holding
259,687 shares
Alarm.com shares held by the Stephen Trundle 2015 Gift Trust; beneficial ownership disclaimed except for pecuniary interest
Footings Advancement Trust indirect holding
9,862 shares
Alarm.com shares held by Footings Advancement Trust; beneficial ownership disclaimed except for pecuniary interest
Key Terms
Rule 10b5-1 trading plan, Stock Option (Right to Buy, weighted average price, beneficial ownership, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"effected pursuant to a Rule 10b5-1 trading plan adopted"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Stock Option (Right to Buy financial
"security_title": "Stock Option (Right to Buy)"
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficial ownership regulatory
"The Reporting Person disclaims beneficial ownership of the shares"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent, if any, of his pecuniary interest therein."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transaction did ALRM CEO Stephen Trundle report on this Form 4?
Stephen Trundle reported exercising options for 50,000 Alarm.com Holdings (ALRM) shares at $32.17 per share and selling 50,000 common shares at a weighted average price of $57.67 per share on August 24, 2026, as part of an exercise-and-sale sequence.
Was the ALRM CEO’s August 24, 2026 stock sale under a Rule 10b5-1 plan?
Yes. The option exercise and corresponding sales by ALRM CEO Stephen Trundle on August 24, 2026 were effected pursuant to a Rule 10b5-1 trading plan adopted on May 22, 2026, according to the filing’s footnote.
Were the exercised ALRM options vested at the time of exercise?
Yes. The Form 4 notes that the stock option covering 50,000 ALRM shares was immediately exercisable and fully vested at the time of the August 24, 2026 exercise.
AI-generated analysis. How Rhea-AI works. Not financial advice.
