Sean P. Hennessy sold TransDigm Group ($TDG) shares on the open market five times over the past year, totaling $6.75 million, with his most recent sale on May 20, 2025. His sales volume ranks 1,543rd among nearly 12,000 individual insiders, below the average of $8.6 million across 6.4 transactions per insider. He made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 20, 2026 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Common Stock | 41 | $1214.66 | 33,790.0900 | 58,200,000 | 0.12% | 0.00% |
| Feb. 26, 2026 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 7000 | $0.00 | 14,000.0000 | 147,923,437 | 100.00% | 0.00% |
| Feb. 26, 2026 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 7000 | $0.00 | 28,000.0000 | 147,923,437 | 33.33% | 0.00% |
| Feb. 26, 2026 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 6194 | $0.00 | 6,194.0000 | 147,923,437 | 9999.99% | 0.00% |
| Feb. 26, 2026 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 7000 | $0.00 | 21,000.0000 | 147,923,437 | 50.00% | 0.00% |
| Feb. 26, 2026 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 7000 | $0.00 | 21,000.0000 | 147,923,437 | 50.00% | 0.00% |
| Feb. 26, 2026 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 1750 | $0.00 | 7,000.0000 | 147,923,437 | 33.33% | 0.00% |
| Nov. 4, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Stock Option | 518 | $0.00 | 518.0000 | 58,200,000 | 9999.99% | 0.00% |
| Sept. 19, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Common Stock | 36 | $1288.13 | 33,749.0900 | 58,200,000 | 0.11% | 0.00% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | S | Common Stock | 100 | $1439.92 | 33,713.0900 | 58,300,000 | 0.30% | 0.00% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | M | Common Stock | 4700 | $156.47 | 38,413.0900 | 58,300,000 | 13.94% | 0.01% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | S | Common Stock | 3000 | $1435.77 | 35,413.0900 | 58,300,000 | 7.81% | 0.01% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | S | Common Stock | 664 | $1437.07 | 34,749.0900 | 58,300,000 | 1.88% | 0.00% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | S | Common Stock | 636 | $1437.85 | 34,113.0900 | 58,300,000 | 1.83% | 0.00% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | S | Common Stock | 300 | $1438.89 | 33,813.0900 | 58,300,000 | 0.88% | 0.00% |
| May 20, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | M | Stock Option | 4700 | $0.00 | 0.0000 | 58,300,000 | 100.00% | 0.01% |
| March 26, 2025 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Common Stock | 35 | $1346.50 | 33,713.0900 | 58,300,000 | 0.10% | 0.00% |
| Feb. 20, 2025 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 14000 | $0.00 | 14,000.0000 | 145,713,439 | 9999.99% | 0.01% |
| Feb. 20, 2025 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 14000 | $0.00 | 14,000.0000 | 145,713,439 | 9999.99% | 0.01% |
| Feb. 20, 2025 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 5250 | $0.00 | 5,250.0000 | 145,713,439 | 9999.99% | 0.00% |
| Feb. 20, 2025 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 7000 | $0.00 | 7,000.0000 | 145,713,439 | 9999.99% | 0.00% |
| Feb. 20, 2025 | Perimeter Solutions, Inc. | $PRM | HENNESSY SEAN P | Director | A | Stock Option (right to buy) | 21000 | $0.00 | 21,000.0000 | 145,713,439 | 9999.99% | 0.01% |
| Oct. 31, 2024 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Stock Option | 450 | $0.00 | 450.0000 | 57,800,000 | 9999.99% | 0.00% |
| Sept. 25, 2024 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Common Stock | 34 | $1367.76 | 33,678.0900 | 57,900,000 | 0.10% | 0.00% |
| Feb. 25, 2019 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | G | Common Stock | 288 | $0.00 | 33,644.0900 | 0 | 0.85% | 0.00% |
| June 7, 2018 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | G | Common Stock | 44 | $0.00 | 33,932.0900 | 0 | 0.13% | 0.00% |
| Dec. 21, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | L | Common Stock | 4 | $988.81 | 33,970.0600 | 57,200,000 | 0.01% | 0.00% |
| Jan. 22, 2024 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | P | Common Stock | 0 | $1065.40 | 33,976.0900 | 57,200,000 | 0.00% | 0.00% |
| Dec. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | L | Common Stock | 0 | $1003.40 | 33,975.6100 | 57,200,000 | 0.00% | 0.00% |
| Dec. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | L | Common Stock | 0 | $1001.05 | 33,975.5100 | 57,200,000 | 0.00% | 0.00% |
| Dec. 21, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | L | Common Stock | 5 | $988.05 | 33,975.3100 | 57,200,000 | 0.02% | 0.00% |
| March 22, 2024 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Not found | A | Common Stock | 31 | $1172.20 | 33,976.0900 | 57,200,000 | 0.09% | 0.00% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | S | Common Stock | 320 | $974.31 | 33,935.0000 | 57,200,000 | 0.93% | 0.00% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | M | Common Stock | 3650 | $172.84 | 37,585.0000 | 57,200,000 | 10.76% | 0.01% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | M | Stock Option | 3650 | $0.00 | 0.0000 | 57,200,000 | 100.00% | 0.01% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | S | Common Stock | 300 | $968.58 | 37,285.0000 | 57,200,000 | 0.80% | 0.00% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | S | Common Stock | 965 | $969.82 | 36,320.0000 | 57,200,000 | 2.59% | 0.00% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | S | Common Stock | 1074 | $971.02 | 35,246.0000 | 57,200,000 | 2.96% | 0.00% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | S | Common Stock | 871 | $972.29 | 34,375.0000 | 57,200,000 | 2.47% | 0.00% |
| Nov. 22, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | S | Common Stock | 120 | $972.73 | 34,255.0000 | 57,200,000 | 0.35% | 0.00% |
| Nov. 2, 2023 | TransDigm Group INC | $TDG | HENNESSY SEAN P | Director | A | Stock Option | 670 | $0.00 | 670.0000 | 57,200,000 | 9999.99% | 0.00% |