ST
Insider
Stephen Trundle
Chief Executive OfficerStephen Trundle (Chief Executive Officer) filed 4 Form 4 reports in the trailing twelve months (1 purchase, 3 sales), most often in Alarm.com Holdings, Inc. (ALRM). Across 1 priced purchase filing, the average 21-session return was +8.9% from execution and +8.0% from disclosure (delay-adjusted; derived). The largest single filing was $2.9M of ALRM (50,000 sh × $57.67, as filed), executed Aug 24.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+8.9%
avg across 1 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+8.0%
same 1 filings, from disclosure
Filings, ttm
4
1 buys · 3 sells
Median delay
2d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$4.5M
shares × price, as filed
Last traded
Aug 24
Filed Aug 25
Median ADV $28.6M across their filed names
Open performance→Volume by month
Buys $1.3M
Sells $6.9M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Technology
4 filings
Sector per market data · by filing · past 12 months
Most traded names
ALRMRecent filings
ALRMSALE
Alarm.com Holdings, Inc.
View filing →
$2.9M50,000 sh × $57.67
Exec Aug 24
Filed Aug 25 · 5:43 PM ET ALRMSALE Alarm.com Holdings, Inc. View filing → $266K
6,073 sh × $43.78
Exec May 26
Filed May 28 · 5:30 PM ET ALRMSALE Alarm.com Holdings, Inc. View filing → $128K
2,944 sh × $43.56
Exec May 18
Filed May 20 · 5:30 PM ET ALRMPURCHASE Alarm.com Holdings, Inc. View filing → $1.3M
25,900 sh across 3 lots
Exec Nov 18 2025
Filed Nov 20 2025 · 6:26 PM ET ALRMSALE Alarm.com Holdings, Inc. View filing → $206K
3,644 sh × $56.66
Exec May 23 2025
Filed May 27 2025 · 5:30 PM ET ALRMSALE Alarm.com Holdings, Inc. View filing → $216K
3,626 sh × $59.51
Exec May 16 2025
Filed May 16 2025 · 5:30 PM ET ALRMSALE Alarm.com Holdings, Inc. View filing → $3.2M
47,500 sh across 2 lots
Exec Dec 10 2024
Filed Dec 11 2024 · 5:30 PM ET