Robert J Small insider trades: TransDigm Group (TDG) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Robert reports to the SEC
Open-market buys and sales
100 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Dec 10, 2025 | TDG | ↓ Sell | 4,700 | $1290.19 | $6.1M | Direct | Dec 11, 2025 (1d) |
| Dec 9, 2025 | TDG | ↓ Sell | 75,673 | $1335.72 | $101.1M | By Stockbridge Fund, L.P. | Dec 9, 2025 (0d) |
| Dec 9, 2025 | TDG | ↓ Sell | 15,280 | $1335.72 | $20.4M | By Stockbridge Partners LLC | Dec 9, 2025 (0d) |
| Sep 12, 2025 | TDG | ↓ Sell | 5,000 | $1276.98 | $6.4M | By Stockbridge Partners LLC | Sep 16, 2025 (4d) |
| Jun 10, 2025 | TDG | ↓ Sell | 40,500 | $1425.01 | $57.7M | By Stockbridge Fund, L.P. | Jun 12, 2025 (2d) |
| Jun 10, 2025 | TDG | ↓ Sell | 5,200 | $1425.01 | $7.4M | By Stockbridge Partners LLC | Jun 12, 2025 (2d) |
| Mar 14, 2025 | TDG | ↓ Sell | 8,297 | $1340.56 | $11.1M | By Stockbridge Fund, L.P. | Mar 17, 2025 (3d) |
| Mar 14, 2025 | TDG | ↓ Sell | 1,737 | $1340.41 | $2.3M | By Stockbridge Partners LLC | Mar 17, 2025 (3d) |
| Mar 10, 2025 | TDG | ↓ Sell | 18,472 | $1340.20 | $24.8M | By Stockbridge Fund, L.P. | Mar 10, 2025 (0d) |
| Mar 10, 2025 | TDG | ↓ Sell | 1,528 | $1340.20 | $2.0M | By Stockbridge Partners LLC | Mar 10, 2025 (0d) |
| Mar 7, 2025 | TDG | ↓ Sell | 55,922 | $1343.42 | $75.1M | By Stockbridge Fund, L.P. | Mar 10, 2025 (3d) |
| Mar 7, 2025 | TDG | ↓ Sell | 4,078 | $1343.53 | $5.5M | By Stockbridge Partners LLC | Mar 10, 2025 (3d) |
| Feb 14, 2025 | TDG | ↓ Sell | 3,650 | $1322.19 | $4.8M | Direct | Feb 18, 2025 (4d) |
| Dec 12, 2024 | TDG | ↓ Sell | 38,053 | $1248.78 | $47.5M | By Stockbridge Fund, L.P. | Dec 16, 2024 (4d) |
| Jun 12, 2024 | TDG | ↓ Sell | 13,460 | $1315.87 | $17.7M | By Stockbridge Fund, L.P. | Jun 12, 2024 (0d) |
| Jun 12, 2024 | TDG | ↓ Sell | 7,750 | $1315.87 | $10.2M | By Stockbridge Partners LLC | Jun 12, 2024 (0d) |
| Jun 10, 2024 | TDG | ↓ Sell | 29,974 | $1320.39 | $39.6M | By Stockbridge Fund, L.P. | Jun 11, 2024 (1d) |
| Jun 10, 2024 | TDG | ↓ Sell | 12,526 | $1320.42 | $16.5M | By Stockbridge Partners LLC | Jun 11, 2024 (1d) |
| Feb 27, 2024 | TDG | ↓ Sell | 216,270 | $1160.50 | $251.0M | By Stockbridge Fund, L.P. | Feb 29, 2024 (2d) |
| Feb 27, 2024 | TDG | ↓ Sell | 37,620 | $1160.50 | $43.7M | By Stockbridge Partners LLC | Feb 29, 2024 (2d) |
| Feb 15, 2024 | TDG | ↓ Sell | 4,478 | $1155.97 | $5.2M | Direct | Feb 20, 2024 (5d) |
| Dec 12, 2023 | TDG | ↓ Sell | 18,522 | $997.89 | $18.5M | By Stockbridge Partners LLC | Dec 13, 2023 (1d) |
| Nov 21, 2023 | TDG | ↓ Sell | 20,966 | $969.93 | $20.3M | By Stockbridge Fund, L.P. | Nov 22, 2023 (1d) |
| Nov 21, 2023 | TDG | ↓ Sell | 2,235 | $969.93 | $2.2M | By Stockbridge Partners LLC | Nov 22, 2023 (1d) |
| Nov 20, 2023 | TDG | ↓ Sell | 94,702 | $965.89 | $91.5M | By Stockbridge Fund, L.P. | Nov 20, 2023 (0d) |
| Nov 20, 2023 | TDG | ↓ Sell | 11,556 | $969.01 | $11.2M | By Stockbridge Partners LLC | Nov 20, 2023 (0d) |
| Sep 12, 2023 | TDG | ↓ Sell | 2,682 | $880.47 | $2.4M | By Stockbridge Fund, L.P. | Sep 14, 2023 (2d) |
| Sep 12, 2023 | TDG | ↓ Sell | 285 | $880.47 | $251K | By Stockbridge Partners LLC | Sep 14, 2023 (2d) |
| Sep 8, 2023 | TDG | ↓ Sell | 17,822 | $883.65 | $15.7M | By Stockbridge Fund, L.P. | Sep 8, 2023 (0d) |
| Sep 8, 2023 | TDG | ↓ Sell | 3,233 | $883.66 | $2.9M | By Stockbridge Partners LLC | Sep 8, 2023 (0d) |
| Feb 24, 2023 | TDG | ↓ Sell | 4,439 | $739.22 | $3.3M | Direct | Feb 28, 2023 (4d) |
| Feb 13, 2023 | TDG | ↓ Sell | 147,281 | $736.32 | $108.4M | By Berkshire Entities | Feb 13, 2023 (0d) |
| Feb 13, 2023 | TDG | ↓ Sell | 4,348 | $736.34 | $3.2M | By Stockbridge Partners LLC | Feb 13, 2023 (0d) |
| Feb 10, 2023 | TDG | ↓ Sell | 245,927 | $739.04 | $181.8M | By Berkshire Entities | Feb 13, 2023 (3d) |
| Feb 10, 2023 | TDG | ↓ Sell | 8,851 | $738.99 | $6.5M | By Stockbridge Partners LLC | Feb 13, 2023 (3d) |
| May 23, 2022 | TDG | ↑ Buy | 22,802 | $565.00 | $12.9M | By Stockbridge Partners LLC | May 23, 2022 (0d) |
| May 23, 2022 | TDG | ↑ Buy | 5,651 | $565.00 | $3.2M | By Berkshire Entities | May 23, 2022 (0d) |
| May 19, 2022 | TDG | ↑ Buy | 19,398 | $544.09 | $10.6M | By Stockbridge Partners LLC | May 23, 2022 (4d) |
| Mar 15, 2021 | TDG | ↑ Buy | 1 | $615.99 | $616 | By Berkshire Entities | Mar 17, 2021 (2d) |
| Dec 15, 2020 | TDG | ↑ Buy | 1 | $600.63 | $601 | By Berkshire Entities | Dec 17, 2020 (2d) |
| Sep 15, 2020 | TDG | ↑ Buy | 133,310 | $507.82 | $67.7M | By Berkshire Entities | Sep 16, 2020 (1d) |
| May 13, 2020 | TDG | ↑ Buy | 136,874 | $339.29 | $46.4M | By Berkshire Entities | May 13, 2020 (0d) |
| May 13, 2020 | TDG | ↑ Buy | 101,625 | $319.00 | $32.4M | By Berkshire Entities | May 13, 2020 (0d) |
| May 13, 2020 | TDG | ↑ Buy | 13,326 | $328.37 | $4.4M | By Berkshire Entities | May 13, 2020 (0d) |
| May 13, 2020 | TDG | ↑ Buy | 3,296 | $320.05 | $1.1M | By Stockbridge Partners LLC | May 13, 2020 (0d) |
| May 13, 2020 | TDG | ↑ Buy | 2,331 | $337.66 | $787K | By Stockbridge Partners LLC | May 13, 2020 (0d) |
| May 13, 2020 | TDG | ↑ Buy | 674 | $328.38 | $221K | By Stockbridge Partners LLC | May 13, 2020 (0d) |
| May 12, 2020 | TDG | ↑ Buy | 110,745 | $350.49 | $38.8M | By Berkshire Entities | May 13, 2020 (1d) |
| May 12, 2020 | TDG | ↑ Buy | 3,059 | $351.11 | $1.1M | By Stockbridge Partners LLC | May 13, 2020 (1d) |
| Mar 12, 2020 | TDG | ↑ Buy | 156,545 | $406.71 | $63.7M | By Berkshire Entities | Mar 16, 2020 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other TDG insiders
Open-market trades in the last 12 months
About Robert J Small's insider trades
Robert J Small is an insider at TransDigm Group (TDG). Since Aug 9, 2005, Robert has reported 57 open-market purchases worth $883.2M and 43 sales worth $1.61B on SEC Form 4. In the last 12 months: 3 sales ($127.6M).
Their filings also include grants and awards (20 filings), other transactions (11 filings), option exercises (7 filings), gifts (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every TDG insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.