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TDG

HEALTHY

TransDigm Group INC

CIK: 0001260221

Strong Sell (90% confidence)

Last activity: 1 weeks ago

Financial Metrics

As of Sep 30, 2025 (10-K)

Net Income $172.13M
Total Cash $190.17M
Total Debt $19.38B
Debt/Equity 32.69
Current Ratio 29.98

Trend Signals

CEO Buy STRONG

CEO buying activity

Feb 6, 2026

Insider Roster (6 total, 6 active)

Insider Buys Sells Net Value Holdings
Stein Kevin M
OTHER
 		0 71 -$161.92M
25,127 shares
$35.87M
SMALL ROBERT J
DIRECTOR
 		1 5 -$127.55M
366,142 shares
$470.49M
Howley W Nicholas
OTHER
 		0 36 -$25.59M
24,726.513 shares
$29.98M
Reiss Joel
Co-Chief Operating Officer
 		0 86 -$20.51M
4,592 shares
$5.73M
Lisman Michael
President & CEO
 		1 0 $1.22M
3,259 shares
$4.19M
Murphy Patrick Joseph
Co-Chief Operating Officer
 		0 3 -$1.19M
1,055 shares
$1.51M

Recent Transactions

SELL Howley W Nicholas (OTHER)

2,025 shares @ $1212.57

$2.46M

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,376 shares @ $1210.39

$1.67M

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,246 shares @ $1209.52

$1.51M

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,182 shares @ $1211.46

$1.43M

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,159 shares @ $1213.45

$1.41M

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

552 shares @ $1214.40

$670K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

521 shares @ $1229.51

$641K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

507 shares @ $1206.05

$611K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

324 shares @ $1208.56

$392K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

202 shares @ $1205.42

$243K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

188 shares @ $1216.63

$229K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

125 shares @ $1215.51

$152K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

120 shares @ $1228.44

$147K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

108 shares @ $1231.34

$133K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

91 shares @ $1207.38

$110K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

90 shares @ $1220.61

$110K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

80 shares @ $1217.57

$97K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

70 shares @ $1225.10

$86K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

49 shares @ $1218.80

$60K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

40 shares @ $1221.44

$49K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

38 shares @ $1226.44

$47K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

29 shares @ $1222.38

$35K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

10 shares @ $1223.80

$12K

Mar 18, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

531 shares @ $1247.08

$662K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

490 shares @ $1248.24

$612K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

420 shares @ $1240.92

$521K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

350 shares @ $1243.00

$435K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

320 shares @ $1241.98

$397K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

315 shares @ $1249.29

$394K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

260 shares @ $1239.94

$322K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

227 shares @ $1246.21

$283K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

187 shares @ $1250.25

$234K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

160 shares @ $1238.57

$198K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

134 shares @ $1237.75

$166K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

120 shares @ $1244.09

$149K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

90 shares @ $1245.10

$112K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

70 shares @ $1231.69

$86K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

60 shares @ $1232.57

$74K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

56 shares @ $1236.31

$69K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

50 shares @ $1233.62

$62K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

40 shares @ $1235.13

$49K

Mar 16, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

20 shares @ $1222.87

$24K

Mar 16, 2026

Conviction: | View SEC Filing →
BUY SMALL ROBERT J (DIRECTOR)

1 shares @ $1285.00

$1K

Feb 25, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

2,738 shares @ $1311.07

$3.59M

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,210 shares @ $1309.22

$1.58M

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,154 shares @ $1310.58

$1.51M

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

1,050 shares @ $1307.23

$1.37M

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

973 shares @ $1308.14

$1.27M

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

920 shares @ $1299.31

$1.20M

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

587 shares @ $1304.49

$766K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

560 shares @ $1303.64

$730K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

425 shares @ $1306.17

$555K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

201 shares @ $1302.42

$262K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

190 shares @ $1301.09

$247K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

130 shares @ $1312.04

$171K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Howley W Nicholas (OTHER)

30 shares @ $1300.32

$39K

Feb 18, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

392 shares @ $1298.74

$509K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

361 shares @ $1293.21

$467K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

330 shares @ $1300.91

$429K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

326 shares @ $1297.49

$423K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

266 shares @ $1295.50

$345K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

248 shares @ $1296.63

$322K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

220 shares @ $1299.56

$286K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

214 shares @ $1292.35

$277K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

182 shares @ $1291.11

$235K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

172 shares @ $1294.31

$223K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

140 shares @ $1290.22

$181K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

140 shares @ $1289.10

$180K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

120 shares @ $1286.06

$154K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

120 shares @ $1284.71

$154K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

113 shares @ $1280.72

$145K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

106 shares @ $1287.16

$136K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

104 shares @ $1287.99

$134K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

99 shares @ $1282.44

$127K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

70 shares @ $1305.28

$91K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

71 shares @ $1283.22

$91K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

50 shares @ $1303.99

$65K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

29 shares @ $1302.41

$38K

Feb 17, 2026

Conviction: | View SEC Filing →
SELL Reiss Joel (Co-Chief Operating Officer)

27 shares @ $1279.68

$35K

Feb 17, 2026

Conviction: | View SEC Filing →
BUY Lisman Michael (President & CEO)

950 shares @ $1284.26

$1.22M

Feb 6, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

6,665 shares @ $1427.38

$9.51M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

5,906 shares @ $1425.57

$8.42M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

5,665 shares @ $1426.61

$8.08M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

4,859 shares @ $1424.47

$6.92M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

3,997 shares @ $1423.66

$5.69M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

3,093 shares @ $1433.46

$4.43M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

2,141 shares @ $1422.48

$3.05M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

2,067 shares @ $1428.64

$2.95M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

2,017 shares @ $1430.26

$2.88M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

1,810 shares @ $1429.61

$2.59M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

1,497 shares @ $1436.43

$2.15M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

1,462 shares @ $1434.63

$2.10M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

1,421 shares @ $1431.46

$2.03M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

1,364 shares @ $1432.53

$1.95M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

861 shares @ $1421.73

$1.22M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

810 shares @ $1435.63

$1.16M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

720 shares @ $1439.56

$1.04M

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

428 shares @ $1437.40

$615K

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Murphy Patrick Joseph (Co-Chief Operating Officer)

290 shares @ $1430.10

$415K

Feb 2, 2026

Conviction: | View SEC Filing →
SELL Stein Kevin M (OTHER)

270 shares @ $1438.91

$389K

Feb 2, 2026

Conviction: | View SEC Filing →

⚠️ Important Disclaimer

• This is AI-generated analysis for educational purposes only, not financial advice.

• Insider trading data is derived from SEC Form 4 filings and may contain errors.

• Always conduct your own research and consult qualified financial advisors before making investment decisions.