HALLIDAY SARAH A (EVP/President Comm Banking) reported 5 transactions at NBT BANCORP INC

Review the transaction codes below to understand the nature of each event.

HALLIDAY SARAH A

Filed: 1/16/2026ACC: 0000790359-26-000007

InsiderHALLIDAY SARAH ACIK 1707868

→

IssuerNBT BANCORP INCCIK 790359

Officer· EVP/President Comm Banking

Since Aug 2018

-1.55K

Net shares

Net seller

$67.8K

Total sold

Open market trades

0B · 0S

Total transactions

1.55K disposed

Non-Derivative Transactions5

NBT Bancorp Inc. Common Stock

Direct

F · Tax Withholding

−290.00

Price / share

$43.71

Trade value

$12.68K

% of position

1.0%

1/15/2026

28.19K→27.90K

NBT Bancorp Inc. Common Stock

Direct

F · Tax Withholding

−341.00

Price / share

$43.71

Trade value

$14.91K

% of position

1.2%

1/15/2026

27.90K→27.56K

NBT Bancorp Inc. Common Stock

Direct

F · Tax Withholding

−314.00

Price / share

$43.71

Trade value

$13.72K

% of position

1.1%

1/15/2026

27.56K→27.24K

NBT Bancorp Inc. Common Stock

Direct

F · Tax Withholding

−311.00

Price / share

$43.71

Trade value

$13.59K

% of position

1.1%

1/15/2026

27.24K→26.93K

NBT Bancorp Inc. Common Stock

Direct

F · Tax Withholding

−296.00

Price / share

$43.71

Trade value

$12.94K

% of position

1.1%

1/15/2026

26.93K→26.64K

Total

Net shares

−1.55K

Net value

-$67.84K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
NBT Bancorp Inc. Common Stock Direct	1/15/2026	F · Tax Withholding	−290.00	$43.71	$12.68K	1.0%	28.19K	27.90K
NBT Bancorp Inc. Common Stock Direct	1/15/2026	F · Tax Withholding	−341.00	$43.71	$14.91K	1.2%	27.90K	27.56K
NBT Bancorp Inc. Common Stock Direct	1/15/2026	F · Tax Withholding	−314.00	$43.71	$13.72K	1.1%	27.56K	27.24K
NBT Bancorp Inc. Common Stock Direct	1/15/2026	F · Tax Withholding	−311.00	$43.71	$13.59K	1.1%	27.24K	26.93K
NBT Bancorp Inc. Common Stock Direct	1/15/2026	F · Tax Withholding	−296.00	$43.71	$12.94K	1.1%	26.93K	26.64K
Total			−1.55K		-$67.84K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)1

NBT Bancorp Inc. Common Stock

Indirect

Shares owned7.40K

Total

7.40K indirect7.40K

Security Title	Shares Owned	Ownership Type
NBT Bancorp Inc. Common Stock	7.40K	Indirect
Total	7.40K	7.40K indirect

Derivative Holdings (Post-Transaction)1

Phantom Stock

Direct

Underlying security

NBT Bancorp Inc. Common Stock

Underlying shares

5.15K

Shares owned

5.15K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

5.15K

Owned

5.15K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Phantom Stock Direct	NBT Bancorp Inc. Common Stock		—	—	5.15K	5.15K
Total					5.15K	5.15K