Sarah A. Halliday - 31 Dec 2025 Form 5 Insider Report for NBT BANCORP INC (NBTB)

Signature
By: Annette L. Burns, Power of Attorney For: Sarah A. Halliday
Issuer symbol
NBTB
Transactions as of
31 Dec 2025
Net transactions value
$0
Form type
5
Filing time
13 Feb 2026, 13:05:29 UTC
Previous filing
26 Mar 2025
Next filing
16 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Halliday Sarah A EVP/Chief Comm Innovation Off 52 SOUTH BROAD STREET, NORWICH By: Annette L. Burns, Power of Attorney For: Sarah A. Halliday 13 Feb 2026 0001707868

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NBTB NBT Bancorp Inc. Common Stock Other $0 +250 +3.4% $0.000000 7,653 31 Dec 2025 401k F1
holding NBTB NBT Bancorp Inc. Common Stock 28,187 31 Dec 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction NBTB Phantom Stock Other $0 +173 +3.4% $0.000000 5,318 31 Dec 2025 NBT Bancorp Inc. Common Stock 173 Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares were purchased through payroll deferral and/or dividend reinvestment from 1/1/2025 to 12/31/2025 through NBT Bancorp Inc. 401k Plan.
F2 Each share of phantom stock is deemed invested in one share of NBT Bancorp Inc. common stock pursuant to the terms of the Deferred Compensation Plan.
F3 Shares were purchased through payroll deferral and/or dividend reinvestment from 1/1/2025 to 12/31/2025 through a NBT Bancorp Inc. deferred compensation plan.