Alarm.com Holdings, Inc. ALRM NASDAQ

NASDAQ Global Select • Technology • Software - Application • US • USD

SharesGrow Score

69/100

4/7 Pass

SharesGrow Intrinsic Value

Alarm.com Holdings, Inc. (ALRM) has 20 known insider and institutional holders on record. The largest holder is Trundle Stephen with 1,292,874 shares. Other notable holders include McAdam Timothy P and Martin Jean-Paul.

Over the last 12 months, insiders have made 35 transactions in ALRM stock — 14 buys (valued at $6.89M) and 15 sells (valued at $2.78M). Insider selling has exceeded buying during this period.

ALRM Insider Ownership

Top Holder

Trundle Stephen

1,292,874 shares

Buys (12 mo)

$6.89M value

Sells (12 mo)

$2.78M value

12-Month Transaction Activity

Buy 40%

Sell 43%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Trundle Stephen	Chief Executive Officer	1,292,874	2025-11-20	100%
2	Mcadam Timothy P	Director	100,616	2025-11-28	8%
3	Martin Jean-paul	Chief Technology Officer	86,197	2019-06-14	7%
4	Shattuck Mayo A Iii	Director	56,200	2020-09-30	4%
5	Kerzner Daniel	See Remarks	52,000	2025-11-14	4%
6	Bradley Kevin Christopher	Chief Financial Officer	51,546	2026-03-19	4%
7	Marshall Christopher P	10 Percent Owner	35,223	2020-03-18	3%
8	Nevin Darius G	Director	24,375	2025-06-06	2%
9	Bedell Jeffrey A	See Remarks	22,727	2025-12-16	2%
10	Hutz David	Chief Systems Architect	15,000	2019-04-03	1%
11	Clarke Donald E	Director	14,953	2025-06-06	1%
12	Ramos Daniel	See Remarks	14,000	2025-05-27	1%
13	Wu Simone	Director	12,633	2025-06-06	1%
14	Whall Timothy J.	Director	11,182	2025-06-06	1%
15	Lee Michelle K.	Director	7,815	2019-06-10	1%
16	Evans Stephen C.	Director	6,123	2025-12-16	0%
17	Harper Cecile Burleigh	Director	4,814	2025-06-06	0%
18	Panero Hugh	Director	2,593	2020-11-12	0%
19	Tcv Vii Lp	10 Percent Owner	1,264	2020-03-05	0%
20	Valenzuela Steve	Chief Financial Officer	209	2025-03-14	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-03-18	Bradley Kevin Christopher	Chief Financial Officer	Informative Sell	1,510	$45.97	$69.41K
2026-03-18	Nevin Darius G	Director	Option Exercise (Sell)	36,000	$21.70	$781.2K
2025-12-16	Bedell Jeffrey A	See Remarks	Option Exercise (Sell)	22,727	$15.02	$341.36K
2025-12-12	Evans Stephen C.	Director	Informative Sell	1,154	$52.27	$60.32K
2025-12-12	Bedell Jeffrey A	See Remarks	Option Exercise (Sell)	2,273	$15.02	$34.14K
2025-11-25	Mcadam Timothy P	Director	Gift (Given)	7,000	-	-
2025-11-20	Trundle Stephen	Chief Executive Officer	Informative Buy	9,900	$48.06	$475.79K
2025-11-19	Trundle Stephen	Chief Executive Officer	Informative Buy	12,469	$48.53	$605.12K
2025-11-18	Trundle Stephen	Chief Executive Officer	Informative Buy	3,531	$48.57	$171.5K
2025-11-13	Kerzner Daniel	See Remarks	Option Exercise (Sell)	10,000	$15.02	$150.2K
2025-11-12	Kerzner Daniel	See Remarks	Informative Sell	20,004	$50.29	$1.01M
2025-07-02	Bradley Kevin Christopher	Chief Financial Officer	Informative Sell	754	$56.75	$42.79K
2025-06-11	Evans Stephen C.	Director	Informative Sell	1,000	$59.64	$59.64K
2025-06-05	Evans Stephen C.	Director	RSU Award	2,510	-	-
2025-06-05	Harper Cecile Burleigh	Director	RSU Award	2,510	-	-
2025-06-05	Mcadam Timothy P	Director	RSU Award	2,510	-	-
2025-06-05	Whall Timothy J.	Director	RSU Award	2,510	-	-
2025-06-05	Wu Simone	Director	RSU Award	2,510	-	-
2025-06-05	Clarke Donald E	Director	RSU Award	2,510	-	-
2025-06-05	Nevin Darius G	Director	RSU Award	2,510	-	-
2025-05-23	Trundle Stephen	Chief Executive Officer	Informative Sell	3,644	$56.66	$206.47K
2025-05-22	Trundle Stephen	Chief Executive Officer	RSU Award	40,000	$56.94	$2.28M
2025-05-23	Kerzner Daniel	See Remarks	Informative Sell	2,213	$56.66	$125.39K
2025-05-22	Kerzner Daniel	See Remarks	RSU Award	22,500	$56.94	$1.28M
2025-05-27	Ramos Daniel	See Remarks	Informative Sell	7,000	$57.68	$403.76K