REISS JOEL (Co-Chief Operating Officer) sold 46.5% of their position (3.49K shares) of TRANSDIGM GROUP INC on the open market

Open‑market sale worth $4.24M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 29 sales

REISS JOEL

Filed: 7/17/2026ACC: 0001656109-26-000004

InsiderREISS JOELCIK 1656109

→

IssuerTRANSDIGM GROUP INCCIK 1260221

Officer· Co-Chief Operating Officer

Since Feb 2026

+4.31K

Net shares

Net buyer

$4.24M

Total sold

Open market trades

0B · 29S

Total transactions

7.80K acquired · 3.49K disposed

Non-Derivative Transactions30

Common Stock

Direct

M · Option Exercise

+3.90K

Price / share

$284.97

Trade value

$1.11M

% of position

108.3%

7/15/2026

3.60K→7.50K

Common Stock

Direct

S · Sale

−10.00

Price / share

$1.20K

Trade value

$11.95K

% of position

0.1%

7/15/2026

7.50K→7.49K

Common Stock

Direct

S · Sale

−70.00

Price / share

$1.20K

Trade value

$83.85K

% of position

0.9%

7/15/2026

7.49K→7.42K

Common Stock

Direct

S · Sale

−80.00

Price / share

$1.20K

Trade value

$95.90K

% of position

1.1%

7/15/2026

7.42K→7.34K

Common Stock

Direct

S · Sale

−156.00

Price / share

$1.20K

Trade value

$187.22K

% of position

2.1%

7/15/2026

7.34K→7.18K

Common Stock

Direct

S · Sale

−160.00

Price / share

$1.20K

Trade value

$192.21K

% of position

2.2%

7/15/2026

7.18K→7.02K

Common Stock

Direct

S · Sale

−116.00

Price / share

$1.20K

Trade value

$139.48K

% of position

1.7%

7/15/2026

7.02K→6.91K

Common Stock

Direct

S · Sale

−74.00

Price / share

$1.20K

Trade value

$89.08K

% of position

1.1%

7/15/2026

6.91K→6.83K

Common Stock

Direct

S · Sale

−10.00

Price / share

$1.20K

Trade value

$12.05K

% of position

0.1%

7/15/2026

6.83K→6.82K

Common Stock

Direct

S · Sale

−30.00

Price / share

$1.21K

Trade value

$36.20K

% of position

0.4%

7/15/2026

6.82K→6.79K

Common Stock

Direct

S · Sale

−60.00

Price / share

$1.21K

Trade value

$72.51K

% of position

0.9%

7/15/2026

6.79K→6.73K

Common Stock

Direct

S · Sale

−80.00

Price / share

$1.21K

Trade value

$96.74K

% of position

1.2%

7/15/2026

6.73K→6.65K

Common Stock

Direct

S · Sale

−30.00

Price / share

$1.21K

Trade value

$36.31K

% of position

0.5%

7/15/2026

6.65K→6.62K

Common Stock

Direct

S · Sale

−90.00

Price / share

$1.21K

Trade value

$109.04K

% of position

1.4%

7/15/2026

6.62K→6.53K

Common Stock

Direct

S · Sale

−110.00

Price / share

$1.21K

Trade value

$133.39K

% of position

1.7%

7/15/2026

6.53K→6.42K

Common Stock

Direct

S · Sale

−170.00

Price / share

$1.21K

Trade value

$206.33K

% of position

2.6%

7/15/2026

6.42K→6.25K

Common Stock

Direct

S · Sale

−211.00

Price / share

$1.22K

Trade value

$256.39K

% of position

3.4%

7/15/2026

6.25K→6.04K

Common Stock

Direct

S · Sale

−239.00

Price / share

$1.22K

Trade value

$290.68K

% of position

4.0%

7/15/2026

6.04K→5.80K

Common Stock

Direct

S · Sale

−60.00

Price / share

$1.22K

Trade value

$73.03K

% of position

1.0%

7/15/2026

5.80K→5.74K

Common Stock

Direct

S · Sale

−90.00

Price / share

$1.22K

Trade value

$109.64K

% of position

1.6%

7/15/2026

5.74K→5.65K

Common Stock

Direct

S · Sale

−90.00

Price / share

$1.22K

Trade value

$109.74K

% of position

1.6%

7/15/2026

5.65K→5.56K

Common Stock

Direct

S · Sale

−140.00

Price / share

$1.22K

Trade value

$170.87K

% of position

2.5%

7/15/2026

5.56K→5.42K

Common Stock

Direct

S · Sale

−210.00

Price / share

$1.22K

Trade value

$256.52K

% of position

3.9%

7/15/2026

5.42K→5.21K

Common Stock

Direct

S · Sale

−60.00

Price / share

$1.22K

Trade value

$73.36K

% of position

1.2%

7/15/2026

5.21K→5.15K

Common Stock

Direct

S · Sale

−138.00

Price / share

$1.22K

Trade value

$168.84K

% of position

2.7%

7/15/2026

5.15K→5.02K

Common Stock

Direct

S · Sale

−509.00

Price / share

$1.22K

Trade value

$623.33K

% of position

10.1%

7/15/2026

5.02K→4.51K

Common Stock

Direct

S · Sale

−153.00

Price / share

$1.23K

Trade value

$187.52K

% of position

3.4%

7/15/2026

4.51K→4.35K

Common Stock

Direct

S · Sale

−40.00

Price / share

$1.23K

Trade value

$49.08K

% of position

0.9%

7/15/2026

4.35K→4.31K

Common Stock

Direct

S · Sale

−210.00

Price / share

$1.23K

Trade value

$257.84K

% of position

4.9%

7/15/2026

4.31K→4.10K

Common Stock

Direct

S · Sale

−90.00

Price / share

$1.23K

Trade value

$110.59K

% of position

2.2%

7/15/2026

4.10K→4.01K

Total

Net shares

+414.00

Net value

-$3.13M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	7/15/2026	M · Option Exercise	+3.90K	$284.97	$1.11M	108.3%	3.60K	7.50K
Common Stock Direct	7/15/2026	S · Sale	−10.00	$1.20K	$11.95K	0.1%	7.50K	7.49K
Common Stock Direct	7/15/2026	S · Sale	−70.00	$1.20K	$83.85K	0.9%	7.49K	7.42K
Common Stock Direct	7/15/2026	S · Sale	−80.00	$1.20K	$95.90K	1.1%	7.42K	7.34K
Common Stock Direct	7/15/2026	S · Sale	−156.00	$1.20K	$187.22K	2.1%	7.34K	7.18K
Common Stock Direct	7/15/2026	S · Sale	−160.00	$1.20K	$192.21K	2.2%	7.18K	7.02K
Common Stock Direct	7/15/2026	S · Sale	−116.00	$1.20K	$139.48K	1.7%	7.02K	6.91K
Common Stock Direct	7/15/2026	S · Sale	−74.00	$1.20K	$89.08K	1.1%	6.91K	6.83K
Common Stock Direct	7/15/2026	S · Sale	−10.00	$1.20K	$12.05K	0.1%	6.83K	6.82K
Common Stock Direct	7/15/2026	S · Sale	−30.00	$1.21K	$36.20K	0.4%	6.82K	6.79K
Common Stock Direct	7/15/2026	S · Sale	−60.00	$1.21K	$72.51K	0.9%	6.79K	6.73K
Common Stock Direct	7/15/2026	S · Sale	−80.00	$1.21K	$96.74K	1.2%	6.73K	6.65K
Common Stock Direct	7/15/2026	S · Sale	−30.00	$1.21K	$36.31K	0.5%	6.65K	6.62K
Common Stock Direct	7/15/2026	S · Sale	−90.00	$1.21K	$109.04K	1.4%	6.62K	6.53K
Common Stock Direct	7/15/2026	S · Sale	−110.00	$1.21K	$133.39K	1.7%	6.53K	6.42K
Common Stock Direct	7/15/2026	S · Sale	−170.00	$1.21K	$206.33K	2.6%	6.42K	6.25K
Common Stock Direct	7/15/2026	S · Sale	−211.00	$1.22K	$256.39K	3.4%	6.25K	6.04K
Common Stock Direct	7/15/2026	S · Sale	−239.00	$1.22K	$290.68K	4.0%	6.04K	5.80K
Common Stock Direct	7/15/2026	S · Sale	−60.00	$1.22K	$73.03K	1.0%	5.80K	5.74K
Common Stock Direct	7/15/2026	S · Sale	−90.00	$1.22K	$109.64K	1.6%	5.74K	5.65K
Common Stock Direct	7/15/2026	S · Sale	−90.00	$1.22K	$109.74K	1.6%	5.65K	5.56K
Common Stock Direct	7/15/2026	S · Sale	−140.00	$1.22K	$170.87K	2.5%	5.56K	5.42K
Common Stock Direct	7/15/2026	S · Sale	−210.00	$1.22K	$256.52K	3.9%	5.42K	5.21K
Common Stock Direct	7/15/2026	S · Sale	−60.00	$1.22K	$73.36K	1.2%	5.21K	5.15K
Common Stock Direct	7/15/2026	S · Sale	−138.00	$1.22K	$168.84K	2.7%	5.15K	5.02K
Common Stock Direct	7/15/2026	S · Sale	−509.00	$1.22K	$623.33K	10.1%	5.02K	4.51K
Common Stock Direct	7/15/2026	S · Sale	−153.00	$1.23K	$187.52K	3.4%	4.51K	4.35K
Common Stock Direct	7/15/2026	S · Sale	−40.00	$1.23K	$49.08K	0.9%	4.35K	4.31K
Common Stock Direct	7/15/2026	S · Sale	−210.00	$1.23K	$257.84K	4.9%	4.31K	4.10K
Common Stock Direct	7/15/2026	S · Sale	−90.00	$1.23K	$110.59K	2.2%	4.10K	4.01K
Total			+414.00		-$3.13M

Derivative Transactions1

Stock Option

Direct

M · Option Exercise

Converts to

Common Stock

3.90K shares

+3.90K

Strike price

284.97

Held after

19.70K

Exercisable

—

7/15/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option Direct	Common Stock3.90K shares	7/15/2026	M · Option Exercise	+3.90K	284.97	—	19.70K