The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 12, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Sell(S) | 1K | $48.04 | $58K |
| Jun 12, 2026 | Hoeller Heidi M | Director | Sell(S) | 2K | $48.04 | $101K |
| Jun 9, 2026 | Watt John H JR | Director | Sell(S) | 21K | $47.42 | $996K |
| Jun 5, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Sell(S) | 5K | $46.60 | $233K |
| May 21, 2026 | Kowalczyk Andrew S III | Director | Grant(A) | 1K | $45.86 | $52K |
| May 19, 2026 | Watt John H JR | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Salanger Matthew J | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Robinson V Daniel II | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Kowalczyk Andrew S III | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Nasca David J | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Dietrich Martin A | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Delaney Timothy E | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Brown Jason David | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Cantele Richard J JR | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Ames Johanna R | Director | Grant(A) | 1K | — | $0 |
| May 19, 2026 | Hoeller Heidi M | Director | Grant(A) | 1K | — | $0 |
| May 15, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 361 | $44.09 | $16K |
| May 15, 2026 | Smaniotto Cynthia A | EVP, Chief HR Officer | Tax withholding(F) | 285 | $44.09 | $13K |
| May 15, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 2K | $44.09 | $108K |
| May 11, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Discretionary(I) | 4K | $44.82 | $180K |
| Mar 23, 2026 | Burns Annette L | EVP & Chief Financial Officer | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Burns Annette L | EVP & Chief Financial Officer | Grant(A) | 234 | — | $0 |
| Mar 23, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 65 | $41.99 | $3K |
| Mar 23, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 21 | $41.99 | $882 |
| Mar 23, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Grant(A) | 2K | — | $0 |
| Mar 23, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Grant(A) | 212 | — | $0 |
| Mar 23, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 47 | $41.99 | $2K |
| Mar 23, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 15 | $41.99 | $630 |
| Mar 23, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Tax withholding(F) | 689 | $41.99 | $29K |
| Mar 23, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Tax withholding(F) | 215 | $41.99 | $9K |
| Mar 23, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Grant(A) | 5K | — | $0 |
| Mar 23, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 789 | $41.99 | $33K |
| Mar 23, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 246 | $41.99 | $10K |
| Mar 23, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Grant(A) | 6K | — | $0 |
| Mar 23, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 114 | $41.99 | $5K |
| Mar 23, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 755 | $41.99 | $32K |
| Mar 23, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 236 | $41.99 | $10K |
| Mar 23, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Grant(A) | 4K | — | $0 |
| Mar 23, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Grant(A) | 9K | — | $0 |
| Mar 23, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Tax withholding(F) | 125 | $41.99 | $5K |
| Mar 23, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Grant(A) | 2K | — | $0 |
| Mar 23, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 191 | $41.99 | $8K |
| Mar 23, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 612 | $41.99 | $26K |
| Mar 23, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 221 | $41.99 | $9K |
| Mar 23, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Grant(A) | 3K | — | $0 |
| Mar 23, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 706 | $41.99 | $30K |
| Mar 23, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Grant(A) | 3K | — | $0 |
| Mar 13, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Sell(S) | 2K | $41.30 | $99K |
| Mar 6, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Grant(A) | 3K | $41.63 | $110K |
| Feb 17, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Sell(S) | 4K | $45.72 | $203K |
| Jan 28, 2026 | Delaney Timothy E | Director | Buy(P) | 23K | $42.97 | $977K |
| Jan 15, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 119 | $43.71 | $5K |
| Jan 15, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 42 | $43.71 | $2K |
| Jan 15, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 244 | $43.71 | $11K |
| Jan 15, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 237 | $43.71 | $10K |
| Jan 15, 2026 | Burns Annette L | EVP & Chief Financial Officer | Tax withholding(F) | 69 | $43.71 | $3K |
| Jan 15, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 222 | $43.71 | $10K |
| Jan 15, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 286 | $43.71 | $13K |
| Jan 15, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 317 | $43.71 | $14K |
| Jan 15, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 330 | $43.71 | $14K |
| Jan 15, 2026 | Wiles Amy | EVP, Chief Risk and Credit | Tax withholding(F) | 293 | $43.71 | $13K |
| Jan 15, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 25 | $43.71 | $1K |
| Jan 15, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 129 | $43.71 | $6K |
| Jan 15, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 73 | $43.71 | $3K |
| Jan 15, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 34 | $43.71 | $1K |
| Jan 15, 2026 | Smaniotto Cynthia A | SVP, Chief HR Officer | Tax withholding(F) | 51 | $43.71 | $2K |
| Jan 15, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 338 | $43.71 | $15K |
| Jan 15, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 263 | $43.71 | $11K |
| Jan 15, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 280 | $43.71 | $12K |
| Jan 15, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 305 | $43.71 | $13K |
| Jan 15, 2026 | Stagliano Joseph R | SEVP & President of NBT Bank | Tax withholding(F) | 241 | $43.71 | $11K |
| Jan 15, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Tax withholding(F) | 227 | $43.71 | $10K |
| Jan 15, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Tax withholding(F) | 228 | $43.71 | $10K |
| Jan 15, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Tax withholding(F) | 244 | $43.71 | $11K |
| Jan 15, 2026 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Tax withholding(F) | 243 | $43.71 | $11K |
| Jan 15, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 225 | $43.71 | $10K |
| Jan 15, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 249 | $43.71 | $11K |
| Jan 15, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 259 | $43.71 | $11K |
| Jan 15, 2026 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Tax withholding(F) | 268 | $43.71 | $12K |
| Jan 15, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 290 | $43.71 | $13K |
| Jan 15, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 341 | $43.71 | $15K |
| Jan 15, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 314 | $43.71 | $14K |
| Jan 15, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 311 | $43.71 | $14K |
| Jan 15, 2026 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Tax withholding(F) | 296 | $43.71 | $13K |
| Jan 15, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 148 | $43.71 | $6K |
| Jan 15, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 191 | $43.71 | $8K |
| Jan 15, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 217 | $43.71 | $9K |
| Jan 15, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 212 | $43.71 | $9K |
| Jan 15, 2026 | Hyle Shaunastar | EVP, Retail Community Banking | Tax withholding(F) | 200 | $43.71 | $9K |
| Jan 15, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Tax withholding(F) | 344 | $43.71 | $15K |
| Jan 15, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Tax withholding(F) | 753 | $43.71 | $33K |
| Jan 15, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Tax withholding(F) | 614 | $43.71 | $27K |
| Jan 15, 2026 | Kingsley Scott Allen | President & CEO NBT Bancorp | Tax withholding(F) | 308 | $43.71 | $13K |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2020-03-30 → 2026-07-30. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).