| Delaware | 000-14703 | 16-1268674 |
| (State or other jurisdiction of incorporation or organization) | (Commission File Number) | (I.R.S. Employer Identification No.) |
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
| Title of class | Trading Symbol | Name of exchange on which registered | ||
| Common Stock, par value $0.01 per share | NBTB | The NASDAQ Stock Market LLC |
| Item 5.07 | Submission of Matters to a Vote of Security Holders. |
| Nominee | Votes For | Votes Against | Abstentions | Broker Non-Votes | |||||
| Martin A. Dietrich | 35,103,977 | 784,725 | 60,266 | 6,534,610 | |||||
| John H. Watt, Jr. | 35,358,184 | 530,716 | 60,068 | 6,534,610 | |||||
| Scott A. Kingsley | 35,581,121 | 307,166 | 60,681 | 6,534,610 | |||||
| Johanna R. Ames | 35,324,621 | 575,123 | 49,224 | 6,534,610 | |||||
| J. David Brown | 35,677,992 | 208,911 | 62,065 | 6,534,610 | |||||
| Richard J. Cantele, Jr. | 35,293,009 | 593,920 | 62,039 | 6,534,610 | |||||
| Timothy E. Delaney | 35,008,038 | 815,102 | 125,828 | 6,534,610 | |||||
| Heidi M. Hoeller | 35,622,430 | 205,677 | 120,861 | 6,534,610 | |||||
| Andrew S. Kowalczyk, III | 35,040,959 | 783,059 | 124,950 | 6,534,610 | |||||
| David J. Nasca | 35,194,003 | 623,474 | 131,491 | 6,534,610 | |||||
| V. Daniel Robinson, II | 34,440,287 | 1,443,125 | 65,556 | 6,534,610 | |||||
| Matthew J. Salanger | 35,032,944 | 851,321 | 64,703 | 6,534,610 |
| Votes For | Votes Against | Abstentions | Broker Non-Votes | ||||
| 34,610,946 | 1,018,485 | 319,537 | 6,534,610 |
| Votes For | Votes Against | Abstentions | |||
| 41,843,242 | 445,896 | 194,440 |
| Item 7.01 | Regulation FD Disclosure. |
| Item 9.01 | Financial Statements and Exhibits. |
| Exhibit Number | Description | |
| Press Release of NBT Bancorp Inc., dated May 19, 2026 | ||
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |
| NBT BANCORP INC. | ||
| Date: May 19, 2026 | By: | /s/ Annette L. Burns |
| Annette L. Burns | ||
| Executive Vice President and Chief Financial Officer | ||