REISS JOEL (Co-Chief Operating Officer) sold 45.5% of their position (3K shares) of TRANSDIGM GROUP INC on the open market

Open‑market sale worth $4.22M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 11 sales

REISS JOEL

Filed: 8/20/2025ACC: 0001656109-25-000004

InsiderREISS JOELCIK 1656109

→

IssuerTRANSDIGM GROUP INCCIK 1260221

Officer· Co-Chief Operating Officer

Since Feb 2026

-3K

Net shares

Net seller

$4.22M

Total sold

Open market trades

0B · 11S

Total transactions

3K acquired · 6K disposed

Non-Derivative Transactions12

Common Stock

Direct

M · Option Exercise

+3K

Price / share

$284.97

Trade value

$854.91K

% of position

83.3%

8/20/2025

3.60K→6.60K

Common Stock

Direct

S · Sale

−487.00

Price / share

$1.40K

Trade value

$681.61K

% of position

7.4%

8/20/2025

6.60K→6.11K

Common Stock

Direct

S · Sale

−287.00

Price / share

$1.40K

Trade value

$402.09K

% of position

4.7%

8/20/2025

6.11K→5.83K

Common Stock

Direct

S · Sale

−342.00

Price / share

$1.40K

Trade value

$480.03K

% of position

5.9%

8/20/2025

5.83K→5.48K

Common Stock

Direct

S · Sale

−343.00

Price / share

$1.40K

Trade value

$481.74K

% of position

6.3%

8/20/2025

5.48K→5.14K

Common Stock

Direct

S · Sale

−158.00

Price / share

$1.41K

Trade value

$222.10K

% of position

3.1%

8/20/2025

5.14K→4.98K

Common Stock

Direct

S · Sale

−152.00

Price / share

$1.41K

Trade value

$213.80K

% of position

3.1%

8/20/2025

4.98K→4.83K

Common Stock

Direct

S · Sale

−22.00

Price / share

$1.41K

Trade value

$30.96K

% of position

0.5%

8/20/2025

4.83K→4.81K

Common Stock

Direct

S · Sale

−200.00

Price / share

$1.41K

Trade value

$281.72K

% of position

4.2%

8/20/2025

4.81K→4.61K

Common Stock

Direct

S · Sale

−238.00

Price / share

$1.41K

Trade value

$335.65K

% of position

5.2%

8/20/2025

4.61K→4.37K

Common Stock

Direct

S · Sale

−571.00

Price / share

$1.41K

Trade value

$805.92K

% of position

13.1%

8/20/2025

4.37K→3.80K

Common Stock

Direct

S · Sale

−200.00

Price / share

$1.41K

Trade value

$282.60K

% of position

5.3%

8/20/2025

3.80K→3.60K

Total

Net shares

+0.00

Net value

-$3.36M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	8/20/2025	M · Option Exercise	+3K	$284.97	$854.91K	83.3%	3.60K	6.60K
Common Stock Direct	8/20/2025	S · Sale	−487.00	$1.40K	$681.61K	7.4%	6.60K	6.11K
Common Stock Direct	8/20/2025	S · Sale	−287.00	$1.40K	$402.09K	4.7%	6.11K	5.83K
Common Stock Direct	8/20/2025	S · Sale	−342.00	$1.40K	$480.03K	5.9%	5.83K	5.48K
Common Stock Direct	8/20/2025	S · Sale	−343.00	$1.40K	$481.74K	6.3%	5.48K	5.14K
Common Stock Direct	8/20/2025	S · Sale	−158.00	$1.41K	$222.10K	3.1%	5.14K	4.98K
Common Stock Direct	8/20/2025	S · Sale	−152.00	$1.41K	$213.80K	3.1%	4.98K	4.83K
Common Stock Direct	8/20/2025	S · Sale	−22.00	$1.41K	$30.96K	0.5%	4.83K	4.81K
Common Stock Direct	8/20/2025	S · Sale	−200.00	$1.41K	$281.72K	4.2%	4.81K	4.61K
Common Stock Direct	8/20/2025	S · Sale	−238.00	$1.41K	$335.65K	5.2%	4.61K	4.37K
Common Stock Direct	8/20/2025	S · Sale	−571.00	$1.41K	$805.92K	13.1%	4.37K	3.80K
Common Stock Direct	8/20/2025	S · Sale	−200.00	$1.41K	$282.60K	5.3%	3.80K	3.60K
Total			+0.00		-$3.36M

Derivative Transactions1

Stock Option

Direct

M · Option Exercise

Converts to

Common Stock

3K shares

−3K

Strike price

284.97

Held after

53K

Exercisable

—

8/20/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option Direct	Common Stock3K shares	8/20/2025	M · Option Exercise	−3K	284.97	—	53K