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TDG TransDigm Group Incorporated

Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.

-$33.7M net selling - trailing 90 days

0 buyers - 3 unique sellers

Historical context: most recent complete month (2026-09) is the 98th percentile of this ticker's monthly net P/S flow over 24 complete months. Lower percentiles are more selling; higher are more buying. P10–P90: -$97.4M to -$9.0M.

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$200.0M$100.0M$0-$100.0M-$200.0M2024-10 -$11.7M2024-11 -$10.7M2024-12 -$83.2M2025-01 -$36.4M2025-02 -$41.5M2025-03 -$128.5M2025-04 -$37.9M2025-05 -$102.4M2025-06 -$80.5M2025-07 -$8.4M2025-08 -$9.5M2025-09 -$13.5M2025-10 -$8.7M2025-11 -$30.2M2025-12 -$156.3M2026-01 -$75.5M2026-02 -$85.7M2026-03 -$17.1M2026-04 -$17.7M2026-05 -$16.1M2026-06 -$18.3M2026-07 -$16.2M2026-08 -$17.4M2026-09 -$4.0MOct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Who is responsible

Insider Role Net activity Rows
Howley W Nicholas — -~$24.8M 26
Reiss Joel Co-Chief Operating Officer -~$4.8M 19
Reiss Joel Co-Chief Operating Officer -~$4.0M 24

Transactions

Date Insider Role Type Shares Price Value
September 15, 2026 Reiss Joel Co-Chief Operating Officer 24 reported sale rows 3680 — ~$4.0M
August 18, 2026 Howley W Nicholas — 14 reported sale rows 10132 — ~$12.5M
August 17, 2026 Reiss Joel Co-Chief Operating Officer 19 reported sale rows 3900 — ~$4.8M
July 20, 2026 Howley W Nicholas — 12 reported sale rows 10132 — ~$12.3M
July 15, 2026 Reiss Joel Co-Chief Operating Officer 24 reported sale rows 3180 — ~$3.9M
June 18, 2026 Howley W Nicholas — 66 reported sale rows 30396 — ~$40.1M
June 15, 2026 Reiss Joel Co-Chief Operating Officer 18 reported sale rows 3900 — ~$5.0M
May 18, 2026 Howley W Nicholas — 22 reported sale rows 9952 — ~$11.8M
May 15, 2026 Reiss Joel Co-Chief Operating Officer 25 reported sale rows 3780 — ~$4.4M
April 20, 2026 Howley W Nicholas — 10 reported sale rows 10072 — ~$12.7M
April 15, 2026 Reiss Joel Co-Chief Operating Officer 17 reported sale rows 3900 — ~$5.0M
March 18, 2026 Howley W Nicholas — 23 reported sale rows 10132 — ~$12.3M
March 16, 2026 Reiss Joel Co-Chief Operating Officer 19 reported sale rows 3900 — ~$4.9M
February 25, 2026 SMALL ROBERT J — P 1 1285 ~$1K
February 18, 2026 Howley W Nicholas — 13 reported sale rows 10168 — ~$13.3M
February 17, 2026 Reiss Joel Co-Chief Operating Officer 21 reported sale rows 3640 — ~$4.7M
February 6, 2026 Lisman Michael President & CEO P 950 1284.2608 ~$1.2M
February 2, 2026 Stein Kevin M — 31 reported sale rows 47998 — ~$68.5M
February 2, 2026 Murphy Patrick Joseph Co-Chief Operating Officer S -290 1430.1 ~$0.4M
January 15, 2026 Reiss Joel Co-Chief Operating Officer 18 reported sale rows 3900 — ~$5.6M
January 14, 2026 Stein Kevin M — 3 reported sale rows 7627 — ~$10.7M
January 8, 2026 Stein Kevin M — 7 reported sale rows 17373 — ~$24.4M
January 5, 2026 Stein Kevin M — 21 reported sale rows 25000 — ~$34.3M
January 2, 2026 Murphy Patrick Joseph Co-Chief Operating Officer S -290 1329.03 ~$0.4M
December 15, 2025 Reiss Joel Co-Chief Operating Officer 23 reported sale rows 3440 — ~$4.4M
December 10, 2025 SMALL ROBERT J — 3 reported sale rows 4700 — ~$6.1M
December 9, 2025 SMALL ROBERT J — 2 reported sale rows 90953 — ~$121.5M
December 4, 2025 Stein Kevin M — 8 reported sale rows 17526 — ~$23.9M
December 1, 2025 Murphy Patrick Joseph Co-Chief Operating Officer S -290 1351.06 ~$0.4M
November 28, 2025 Stein Kevin M — 3 reported sale rows 4592 — ~$6.2M
November 26, 2025 Stein Kevin M — S -30 1360.06 ~$41K
November 25, 2025 Stein Kevin M — 2 reported sale rows 4187 — ~$5.7M
November 21, 2025 Stein Kevin M — S -230 1360.3096 ~$0.3M
November 20, 2025 Stein Kevin M — 3 reported sale rows 1104 — ~$1.5M
November 18, 2025 Stein Kevin M — 5 reported sale rows 7191 — ~$9.8M
November 17, 2025 Howley W Nicholas — 14 reported sale rows 2736 — ~$3.7M
November 17, 2025 Reiss Joel Co-Chief Operating Officer 24 reported sale rows 3890 — ~$5.2M
November 14, 2025 Lisman Michael President & CEO 6 reported purchase rows 1954 — ~$2.6M
November 3, 2025 Murphy Patrick Joseph Co-Chief Operating Officer S -290 1310 ~$0.4M
October 27, 2025 Murphy Patrick Joseph Co-Chief Operating Officer S -580 1354.76 ~$0.8M
October 27, 2025 Stein Kevin M — S -700 1360 ~$1.0M
October 20, 2025 Reiss Joel Co-Chief Operating Officer 8 reported sale rows 2800 — ~$3.6M
October 15, 2025 Howley W Nicholas — 10 reported sale rows 2634 — ~$3.4M
September 22, 2025 Reiss Joel Co-Chief Operating Officer 8 reported sale rows 3000 — ~$3.8M
September 15, 2025 Howley W Nicholas — 10 reported sale rows 2586 — ~$3.3M
September 12, 2025 SMALL ROBERT J — 14 reported sale rows 5000 — ~$6.4M
August 26, 2025 Graff Michael — 5 reported sale rows 1760 — ~$2.5M
August 20, 2025 Reiss Joel Co-Chief Operating Officer 10 reported sale rows 2800 — ~$3.9M
August 15, 2025 Howley W Nicholas — 9 reported sale rows 2233 — ~$3.1M
July 21, 2025 Reiss Joel Co-Chief Operating Officer 11 reported sale rows 2600 — ~$4.2M
July 15, 2025 Howley W Nicholas — 9 reported sale rows 2736 — ~$4.3M
June 20, 2025 Reiss Joel Co-Chief Operating Officer 11 reported sale rows 3000 — ~$4.3M
June 16, 2025 Howley W Nicholas — 8 reported sale rows 2636 — ~$3.8M
June 13, 2025 Wynne Sarah Chief Financial Officer S -1800 1450 ~$2.6M
June 12, 2025 Wynne Sarah Chief Financial Officer 3 reported sale rows 3200 — ~$4.6M
June 10, 2025 SMALL ROBERT J — 2 reported sale rows 45700 — ~$65.1M
May 20, 2025 Reiss Joel Co-Chief Operating Officer 6 reported sale rows 3000 — ~$4.3M
May 20, 2025 HENNESSY SEAN P — 5 reported sale rows 4700 — ~$6.8M
May 15, 2025 Howley W Nicholas — 7 reported sale rows 2736 — ~$3.8M
May 14, 2025 Valladares III Jorge L. — 3 reported sale rows 3783 — ~$5.3M
May 13, 2025 Valladares III Jorge L. — 12 reported sale rows 6217 — ~$8.9M
May 13, 2025 Warren Jessica L GC, CCO, Secretary S -490 1425 ~$0.7M
May 5, 2025 Howley W Nicholas — 5 reported sale rows 49241 — ~$72.7M
April 21, 2025 Reiss Joel Co-Chief Operating Officer 12 reported sale rows 3000 — ~$4.0M
April 15, 2025 Howley W Nicholas — 12 reported sale rows 5472 — ~$7.4M
April 14, 2025 Stein Kevin M President & CEO 18 reported sale rows 20000 — ~$26.6M
March 20, 2025 Reiss Joel Co-Chief Operating Officer 11 reported sale rows 3000 — ~$4.1M
March 17, 2025 Howley W Nicholas — 12 reported sale rows 5472 — ~$7.4M
March 14, 2025 SMALL ROBERT J — 6 reported sale rows 9034 — ~$12.1M
March 13, 2025 SMALL ROBERT J — 2 reported sale rows 1000 — ~$1.3M
March 12, 2025 Stein Kevin M President & CEO 13 reported sale rows 19800 — ~$26.0M
March 10, 2025 SMALL ROBERT J — 8 reported sale rows 15500 — ~$20.7M
March 7, 2025 SMALL ROBERT J — 8 reported sale rows 17000 — ~$22.8M
March 6, 2025 SMALL ROBERT J — 8 reported sale rows 25000 — ~$33.6M
March 4, 2025 Warren Jessica L GC, CCO, Secretary 4 reported sale rows 275 — ~$0.4M
February 20, 2025 Reiss Joel Co-Chief Operating Officer 12 reported sale rows 3000 — ~$4.0M
February 18, 2025 Howley W Nicholas — 11 reported sale rows 5472 — ~$7.2M
February 14, 2025 SMALL ROBERT J — 12 reported sale rows 3478 — ~$4.6M
February 12, 2025 Stein Kevin M President & CEO 24 reported sale rows 19042 — ~$25.8M
January 21, 2025 Reiss Joel Co-Chief Operating Officer 9 reported sale rows 2950 — ~$4.0M
January 15, 2025 Howley W Nicholas — 20 reported sale rows 5472 — ~$7.1M
January 13, 2025 Stein Kevin M President & CEO 13 reported sale rows 20000 — ~$25.3M
December 20, 2024 Reiss Joel Co-Chief Operating Officer 8 reported sale rows 3000 — ~$3.8M
December 16, 2024 Howley W Nicholas — 15 reported sale rows 5472 — ~$7.0M
December 12, 2024 Stein Kevin M President & CEO 15 reported sale rows 20000 — ~$25.0M
December 12, 2024 SMALL ROBERT J — 4 reported sale rows 38053 — ~$47.5M
November 20, 2024 Reiss Joel Co-Chief Operating Officer 8 reported sale rows 3000 — ~$3.8M
November 15, 2024 Howley W Nicholas — 17 reported sale rows 5472 — ~$6.9M
October 15, 2024 Reiss Joel Co-Chief Operating Officer 8 reported sale rows 2900 — ~$4.1M
October 15, 2024 Howley W Nicholas — 11 reported sale rows 5472 — ~$7.7M
September 16, 2024 Reiss Joel Co-Chief Operating Officer 9 reported sale rows 2700 — ~$3.7M
September 16, 2024 Howley W Nicholas — 12 reported sale rows 5472 — ~$7.5M