March 31, 2025

September 30, 2024

Gross
Carrying
Value

Accumulated
Amortization

Net
Carrying
Amount

Gross
Carrying
Value

Accumulated
Amortization

Net
Carrying
Amount

Intangible assets with finite lives:

Customer relationships and contracts:

Aerospace

$

281,683

$

(248,631

)

$

33,052

$

281,683

$

(246,152

)

$

35,531

Industrial

371,677

(107,018

)

264,659

399,030

(114,391

)

284,639

Total

$

653,360

$

(355,649

)

$

297,711

$

680,713

$

(360,543

)

$

320,170

Intellectual property:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

3,139

(3,139

)

—

3,139

(3,139

)

—

Total

$

3,139

$

(3,139

)

$

—

$

3,139

$

(3,139

)

$

—

Process technology:

Aerospace

$

44,570

$

(40,660

)

$

3,910

$

44,570

$

(40,346

)

$

4,224

Industrial

81,886

(34,116

)

47,770

87,257

(35,983

)

51,274

Total

$

126,456

$

(74,776

)

$

51,680

$

131,827

$

(76,329

)

$

55,498

Other intangibles:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

565

(565

)

—

592

(592

)

—

Total

$

565

$

(565

)

$

—

$

592

$

(592

)

$

—

Intangible asset with indefinite life:

Trade name:

Aerospace

$

—

$

—

$

—

$

—

$

—

$

—

Industrial

62,795

—

62,795

64,751

—

64,751

Total

$

62,795

$

—

$

62,795

$

64,751

$

—

$

64,751

Total intangibles:

Aerospace

$

326,253

$

(289,291

)

$

36,962

$

326,253

$

(286,498

)

$

39,755

Industrial

520,062

(144,838

)

375,224

554,769

(154,105

)

400,664

Consolidated Total

$

846,315

$

(434,129

)

$

412,186

$

881,022

$

(440,603

)

$

440,419