Stephen Trundle, CEO of Alarm.com Holdings ($ALRM), made four open market purchases of company shares in the past year, totaling $1.26 million, with the most recent on November 20, 2025. This ranks him 422nd among nearly 5,000 insiders by purchase value, below the average of $1.46 million over 3.29 trades. He also sold shares three times for $508,000, latest on May 23, 2025, placing 6,399th out of nearly 12,000 insiders, far under the average sale of $8.6 million across 6.37 transactions.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov. 18, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | P | Common Stock | 3531 | $48.57 | 1,831,282.0000 | 59,630,170 | 0.19% | 0.01% |
| Nov. 19, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | P | Common Stock | 12469 | $48.53 | 1,843,751.0000 | 59,630,170 | 0.68% | 0.02% |
| Nov. 20, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | P | Common Stock | 100 | $48.66 | 1,853,751.0000 | 59,630,170 | 0.01% | 0.00% |
| Nov. 20, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | P | Common Stock | 9900 | $48.06 | 1,853,651.0000 | 59,630,170 | 0.54% | 0.02% |
| May 22, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | A | Common Stock | 25000 | $0.00 | 1,831,395.0000 | 57,993,019 | 1.38% | 0.04% |
| May 22, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | A | Employee Stock Option (Right to Buy) | 40000 | $0.00 | 40,000.0000 | 57,993,019 | 9999.99% | 0.07% |
| May 23, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 3644 | $56.66 | 1,827,751.0000 | 57,993,019 | 0.20% | 0.01% |
| May 16, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 3626 | $59.51 | 1,806,395.0000 | 57,993,019 | 0.20% | 0.01% |
| April 2, 2025 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 1553 | $55.49 | 1,810,021.0000 | 57,993,019 | 0.09% | 0.00% |
| Dec. 10, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | M | Common Stock | 47500 | $21.70 | 1,859,074.0000 | 59,780,908 | 2.62% | 0.08% |
| Dec. 10, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | M | Stock Option (Right to Buy) | 47500 | $0.00 | 0.0000 | 59,780,908 | 100.00% | 0.08% |
| Dec. 10, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 1999 | $68.81 | 1,811,574.0000 | 59,780,908 | 0.11% | 0.00% |
| Dec. 10, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 45501 | $68.15 | 1,813,573.0000 | 59,780,908 | 2.45% | 0.08% |
| May 22, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | A | Common Stock | 25000 | $0.00 | 1,813,829.0000 | 54,625,434 | 1.40% | 0.05% |
| May 22, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | F | Common Stock | 2255 | $67.02 | 1,811,574.0000 | 54,625,434 | 0.12% | 0.00% |
| May 22, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | A | Employee Stock Option (Right to Buy) | 30000 | $0.00 | 30,000.0000 | 54,625,434 | 9999.99% | 0.05% |
| May 15, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | F | Common Stock | 4512 | $70.05 | 1,788,829.0000 | 54,625,434 | 0.25% | 0.01% |
| March 1, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | G | Common Stock | 5000 | $0.00 | 1,796,558.0000 | 54,625,434 | 0.28% | 0.01% |
| April 2, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 3217 | $70.00 | 1,793,341.0000 | 54,625,434 | 0.18% | 0.01% |
| Feb. 23, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 600 | $74.47 | 1,801,558.0000 | 54,625,434 | 0.03% | 0.00% |
| Feb. 23, 2024 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 49400 | $73.79 | 1,802,158.0000 | 54,625,434 | 2.67% | 0.09% |
| May 22, 2023 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | A | Common Stock | 25000 | $0.00 | 1,851,558.0000 | 54,932,757 | 1.37% | 0.05% |
| May 22, 2023 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | A | Employee Stock Option (Right to Buy) | 30000 | $0.00 | 30,000.0000 | 54,932,757 | 9999.99% | 0.05% |
| May 16, 2023 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 4694 | $48.82 | 1,826,558.0000 | 54,932,757 | 0.26% | 0.01% |
| April 3, 2023 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 4618 | $49.62 | 1,831,421.0000 | 54,932,757 | 0.25% | 0.01% |
| April 3, 2023 | Alarm.com Holdings, Inc. | $ALRM | Trundle Stephen | Chief Executive Officer | S | Common Stock | 169 | $50.08 | 1,831,252.0000 | 54,932,757 | 0.01% | 0.00% |