(Dollars in thousands)

Fair Value

Quoted Prices
In Active
Markets
for Identical
Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

September 30,2026:

Assets

Derivative financial instruments

$

119,731

$

—

$

119,731

$

—

Mortgage loans held for sale

49,313

—

49,313

—

Trading securities

141,534

—

141,534

—

Securities available for sale:

Residential mortgage-backed securities issued by U.S. government

   agencies or sponsored enterprises

1,836,004

—

1,836,004

—

Residential collateralized mortgage-obligations issued by U.S. government

   agencies or sponsored enterprises

1,958,644

—

1,958,644

—

Commercial mortgage-backed securities issued by U.S. government

   agencies or sponsored enterprises

1,028,519

—

1,028,519

—

State and municipal obligations

1,035,036

—

1,035,036

—

Small Business Administration loan-backed securities

513,102

—

513,102

—

Corporate securities

22,004

—

22,004

—

Total securities available for sale

6,393,309

—

6,393,309

—

Mortgage servicing rights

101,990

—

—

101,990

SBA servicing asset

4,748

—

—

4,748

$

6,810,625

$

—

$

6,703,887

$

106,738

Liabilities

Derivative financial instruments

$

987,960

$

—

$

987,960

$

—

December 31, 2025:

Assets

Derivative financial instruments

$

222,886

$

—

$

222,886

$

—

Mortgage loans held for sale

61,400

—

61,400

—

Trading securities

110,183

—

110,183

—

Securities available for sale:

Residential mortgage-backed securities issued by U.S. government

   agencies or sponsored enterprises

1,698,108

—

1,698,108

—

Residential collateralized mortgage-obligations issued by U.S. government

   agencies or sponsored enterprises

2,185,584

—

2,185,584

—

Commercial mortgage-backed securities issued by U.S. government

   agencies or sponsored enterprises

832,449

—

832,449

—

State and municipal obligations

1,007,412

—

1,007,412

—

Small Business Administration loan-backed securities

568,433

—

568,433

—

Corporate securities

21,770

—

21,770

—

Total securities available for sale

6,313,756

—

6,313,756

—

Mortgage servicing rights

84,032

—

—

84,032

SBA servicing asset

5,512

—

—

5,512

$

6,797,769

$

—

$

6,708,225

$

89,544

Liabilities

Derivative financial instruments

$

554,748

$

—

$

554,748

$

—

(Dollars in thousands)

Fair Value

Quoted Prices
In Active
Markets
for Identical
Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

September 30,2026:

OREO

$

15,220

$

—

$

—

$

15,220

Bank properties held for sale

6,836

—

—

6,836

Individually evaluated loans

223,975

—

—

223,975

December 31, 2025:

OREO

$

8,771

$

—

$

—

$

8,771

Individually evaluated loans

328,452

—

—

328,452

Carrying

Fair

(Dollars in thousands)

Amount

Value

Level 1

Level 2

Level 3

September 30,2026

Financial assets:

Cash and cash equivalents

$

2,974,618

$

2,974,618

$

2,974,618

$

—

$

—

Trading securities

141,534

141,534

—

141,534

—

Investment securities

8,705,780

8,319,757

287,005

7,912,585

120,167

Loans held for sale

296,835

297,162

—

297,162

—

Loans, net of allowance for credit losses

51,464,175

50,926,865

—

—

50,926,865

Accrued interest receivable

253,452

253,452

—

35,312

218,140

Mortgage servicing rights

101,990

101,990

—

—

101,990

SBA servicing asset

4,748

4,748

—

—

4,748

Interest rate swap – non-designated hedge

117,921

117,921

—

117,921

—

Other derivative financial instruments (mortgage banking related)

1,810

1,810

—

1,810

—

Financial liabilities:

Deposits

Noninterest-bearing

13,445,715

13,445,715

—

13,445,715

—

Interest-bearing other than time deposits

35,840,527

35,840,527

—

35,840,527

—

Time deposits

8,352,039

8,323,116

—

8,323,116

—

Federal funds purchased and securities sold under agreements to repurchase

498,173

498,173

—

498,173

—

Corporate and subordinated debentures

696,855

678,415

—

678,415

—

Other borrowings

300,000

299,994

—

299,994

—

Accrued interest payable

37,494

37,494

—

37,494

—

Interest rate swap – non-designated hedge

982,452

982,452

—

982,452

—

Other derivative financial instruments (mortgage banking related)

5,508

5,508

—

5,508

—

December 31, 2025

Financial assets:

Cash and cash equivalents

$

3,172,483

$

3,172,483

$

3,172,483

$

—

$

—

Trading securities

110,183

110,183

—

110,183

—

Investment securities

8,715,214

8,400,034

274,730

8,046,606

78,698

Loans held for sale

345,343

348,381

—

348,381

—

Loans, net of allowance for credit losses

48,013,330

47,378,022

—

—

47,378,022

Accrued interest receivable

233,265

233,265

—

35,302

197,963

Mortgage servicing rights

84,032

84,032

—

—

84,032

SBA servicing asset

5,512

5,512

—

—

5,512

Interest rate swap – non-designated hedge

221,835

221,835

—

221,835

—

Other derivative financial instruments (mortgage banking related)

1,051

1,051

—

1,051

—

Financial liabilities:

Deposits

Noninterest-bearing

13,375,697

13,375,697

—

13,375,697

—

Interest-bearing other than time deposits

34,410,867

34,410,867

—

34,410,867

—

Time deposits

7,359,233

7,347,648

—

7,347,648

—

Federal funds purchased and securities sold under agreements to repurchase

618,215

618,215

—

618,215

—

Corporate and subordinated debentures

696,536

683,772

—

683,772

—

Accrued interest payable

48,972

48,972

—

48,972

—

Interest rate swap – non-designated hedge

554,433

554,433

—

554,433

—

Other derivative financial instruments (mortgage banking related)

315

315

—

315

—

(Dollars in thousands)

MSRs

Fair value, January 1, 2026

$

84,032

Servicing assets that resulted from transfers of financial assets

5,716

Changes in fair value due to valuation inputs or assumptions

20,569

Changes in fair value due to decay

(8,327

)

Fair value, September 30,2026

$

101,990

(Dollars in thousands)

SBA Servicing Asset

Fair value, January 1, 2026

$

5,512

Servicing assets that resulted from transfers of financial assets

409

Changes in fair value due to decay

(1,243

)

Changes in fair value due to valuation inputs or assumptions

70

Fair value, September 30,2026

$

4,748