Joel Reiss is COO at TransDigm Group INC (TDG). They have made 44 open-market trades across 1 company since 2017, most recently 2026-10-15.
CIK 0001656109
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 44 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TDG | 3,600 | $4.1M |
Shares reported on the most recent Form 4, priced at the 2026-10-16 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TDG | SELL | 2026-10-15 | 2026-10-16 | $1128.04 | $4.6M | — | — | — |
| TDG | SELL | 2026-09-15 | 2026-09-16 | $1094.58 | $4.3M | +1.3% | +4.0% | — |
| TDG | SELL | 2026-08-17 | 2026-08-18 | $1238.76 | $4.8M | -3.8% | -12.7% | — |
| TDG | SELL | 2026-07-15 | 2026-07-17 | $1231.11 | $510K | +3.5% | +1.4% | -7.0% |
| TDG | SELL | 2026-07-15 | 2026-07-17 | $1216.21 | $4.2M | +3.5% | +1.4% | -7.0% |
| TDG | SELL | 2026-06-15 | 2026-06-16 | $1276.78 | $5.0M | +2.6% | -4.6% | -13.8% |
| TDG | SELL | 2026-05-15 | 2026-05-18 | $1154.09 | $4.5M | +6.2% | +11.1% | +4.5% |
| TDG | SELL | 2026-04-15 | 2026-04-16 | $1280.46 | $5.0M | -6.9% | -4.6% | -0.6% |
| TDG | SELL | 2026-03-16 | 2026-03-17 | $1243.75 | $9.7M | -7.3% | -0.1% | +3.9% |
| TDG | SELL | 2026-02-17 | 2026-02-18 | $1293.88 | $5.0M | +0.3% | -10.3% | -10.2% |
| TDG | SELL | 2026-01-15 | 2026-01-16 | $1429.92 | $5.6M | -1.6% | -9.9% | -15.0% |
| TDG | SELL | 2025-12-15 | 2025-12-16 | $1290.29 | $9.4M | +4.1% | +13.4% | -1.3% |
| TDG | SELL | 2025-11-17 | 2025-11-18 | $1339.87 | $9.9M | +0.9% | -6.0% | -3.1% |
| TDG | SELL | 2025-10-20 | 2025-10-21 | $1279.61 | $7.3M | -1.1% | +0.3% | +9.4% |
| TDG | SELL | 2025-09-22 | 2025-09-24 | $1276.07 | $7.7M | -0.4% | +4.8% | +1.4% |
| TDG | SELL | 2025-08-20 | 2025-08-20 | $1405.73 | $7.8M | -6.8% | -8.4% | -3.5% |
| TDG | SELL | 2025-07-21 | 2025-07-22 | $1597.62 | $8.1M | +0.4% | -11.8% | -17.5% |
| TDG | SELL | 2025-06-20 | 2025-06-20 | $1424.98 | $8.1M | +4.3% | +9.3% | -11.2% |
| TDG | SELL | 2025-05-20 | 2025-05-20 | $1434.67 | $8.0M | +1.0% | +0.2% | -3.4% |
| TDG | SELL | 2025-04-21 | 2025-04-21 | $1322.72 | $8.2M | +9.1% | +7.1% | +20.5% |
| TDG | SELL | 2025-03-20 | 2025-03-21 | $1360.22 | $7.8M | +3.8% | -3.1% | +7.0% |
| TDG | SELL | 2025-02-20 | 2025-02-25 | $1322.82 | $7.5M | +0.4% | +3.6% | +8.8% |
| TDG | SELL | 2025-01-21 | 2025-01-22 | $1359.15 | $8.0M | -1.9% | -6.5% | -5.2% |
| TDG | SELL | 2024-12-20 | 2024-12-20 | $1257.09 | $7.5M | +0.5% | +7.0% | +7.2% |
| TDG | SELL | 2024-11-20 | 2024-11-20 | $1253.91 | $5.4M | -3.6% | -2.2% | -0.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.