Stephen Trundle

ALRM

Stephen Trundle serves as Chief Executive Officer at Alarm.com Holdings, Inc. (ALRM). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

1 trades

$1.26M

Total Sells

24 trades

$34.36M

Net Position

Net Seller

$33.11M

Companies Traded

ALRM

Active Period

Apr 2021 – Nov 2025

25 total trades

Most Recent

Buy ALRM

Nov 18, 2025 · $1.26M

Stephen Trundle's Insider Trading at Alarm.com Holdings, Inc. (ALRM)

Buys

1 · $1.26M

Sells

24 · $34.36M

Total Shares Bought

26,000

Total Shares Sold

438,962

ALRM Price Chart

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Date	Type	Shares	Avg Price	Value
Nov 18, 2025↗	Buy	26,000	$48.36	$1.26M
May 22, 2025↗	Sell	3,644	$56.66	$206.5K
May 16, 2025↗	Sell	3,626	$59.51	$215.8K
Apr 2, 2025↗	Sell	1,553	$55.49	$86.2K
Dec 10, 2024↗	Sell	47,500	$68.18	$3.24M
May 22, 2024↗	Sell	2,255	$67.02	$151.1K
May 15, 2024↗	Sell	4,512	$70.05	$316.1K
Mar 1, 2024↗	Sell	3,217	$70.00	$225.2K
Feb 23, 2024↗	Sell	50,000	$73.80	$3.69M
May 16, 2023↗	Sell	4,694	$48.82	$229.2K
Apr 3, 2023↗	Sell	4,787	$49.64	$237.6K
May 15, 2022↗	Sell	2,392	$57.80	$138.3K
Apr 4, 2022↗	Sell	5,305	$67.84	$359.9K
Dec 6, 2021↗	Sell	25,000	$79.11	$1.98M
Nov 18, 2021↗	Sell	19,594	$83.59	$1.64M
Nov 15, 2021↗	Sell	40,883	$84.21	$3.44M
Nov 9, 2021↗	Sell	22,875	$85.71	$1.96M
Oct 11, 2021↗	Sell	25,000	$77.66	$1.94M
Aug 19, 2021↗	Sell	25,000	$77.24	$1.93M
Jun 4, 2021↗	Sell	20,000	$80.15	$1.60M
May 28, 2021↗	Sell	40,279	$81.89	$3.30M
May 14, 2021↗	Sell	14,087	$82.29	$1.16M
May 7, 2021↗	Sell	45,634	$85.23	$3.89M
Apr 22, 2021↗	Sell	20,000	$90.23	$1.80M
Apr 5, 2021↗	Sell	7,125	$87.39	$622.7K