Stephen Trundle

ALRM

Stephen Trundle serves as director, officer: 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

26 trades

$34.76M

Net Position

Net Seller

$33.50M

Companies Traded

ALRM

Active Period

Apr 2021 – May 2026

27 total trades

Most Recent

Sell ALRM

May 28, 2026 · $265.9K

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

Buys

1 · $1.26M

Sells

26 · $34.76M

Total Shares Bought

26,000

Total Shares Sold

447,979

ALRM Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
May 28, 2026	Sell	6,073	$43.78	$265.9K	324,842
May 20, 2026	Sell	2,944	$43.56	$128.2K	330,915
Nov 18, 2025	Buy	26,000	$48.36	$1.26M	0
May 22, 2025	Sell	3,644	$56.66	$206.5K	0
May 16, 2025	Sell	3,626	$59.51	$215.8K	0
Apr 2, 2025	Sell	1,553	$55.49	$86.2K	0
Dec 10, 2024	Sell	47,500	$68.18	$3.24M	0
May 22, 2024	Sell	2,255	$67.02	$151.1K	0
May 15, 2024	Sell	4,512	$70.05	$316.1K	0
Mar 1, 2024	Sell	3,217	$70.00	$225.2K	0
Feb 23, 2024	Sell	50,000	$73.80	$3.69M	0
May 16, 2023	Sell	4,694	$48.82	$229.2K	0
Apr 3, 2023	Sell	4,787	$49.64	$237.6K	0
May 15, 2022	Sell	2,392	$57.80	$138.3K	0
Apr 4, 2022	Sell	5,305	$67.84	$359.9K	0
Dec 6, 2021	Sell	25,000	$79.11	$1.98M	0
Nov 18, 2021	Sell	19,594	$83.59	$1.64M	0
Nov 15, 2021	Sell	40,883	$84.21	$3.44M	0
Nov 9, 2021	Sell	22,875	$85.71	$1.96M	0
Oct 11, 2021	Sell	25,000	$77.66	$1.94M	0
Aug 19, 2021	Sell	25,000	$77.24	$1.93M	0
Jun 4, 2021	Sell	20,000	$80.15	$1.60M	0
May 28, 2021	Sell	40,279	$81.89	$3.30M	0
May 14, 2021	Sell	14,087	$82.29	$1.16M	0
May 7, 2021	Sell	45,634	$85.23	$3.89M	0
Apr 22, 2021	Sell	20,000	$90.23	$1.80M	0
Apr 5, 2021	Sell	7,125	$87.39	$622.7K	0