20 insiders reported 168 Form 4 transactions for NBT BANCORP INC (NBTB) over the past 18 months (most recent 2026-07-30). Recent activity: Halliday Sarah A (EVP/Chief Comm Innovation Off) Sell 9,000 shares, Mahoney Ruth H (EVP/President of Wealth Mgmt) Sell 4,500 shares, Hoeller Heidi M (Director) Sell 2,100 shares, Sparks Martin Randolph (EVP,General Counsel,Secretary) Sell 1,200 shares, WATT JOHN H JR (Director) Sell 21,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-30 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Sell | 9,000 | $486,401 |
| 2026-07-30 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Sell | 4,500 | $244,350 |
| 2026-06-12 | Hoeller Heidi M | Director | Sell | 2,100 | $100,874 |
| 2026-06-12 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Sell | 1,200 | $57,650 |
| 2026-06-10 | WATT JOHN H JR | Director | Sell | 21,000 | $995,751 |
| 2026-06-08 | Mahoney Ruth H | EVP/President of Wealth Mgmt | Sell | 5,000 | $233,000 |
| 2026-05-21 | DIETRICH MARTIN A | Director | Buy | 1,050 | $0 |
| 2026-05-21 | DELANEY TIMOTHY E | Director | Buy | 1,050 | $0 |
| 2026-05-21 | CANTELE RICHARD J JR | Director | Buy | 1,050 | $0 |
| 2026-05-21 | NASCA DAVID J | Director | Buy | 1,050 | $0 |
| 2026-05-21 | WATT JOHN H JR | Director | Buy | 1,050 | $0 |
| 2026-05-21 | Kowalczyk Andrew S III | Director | Buy | 1,050 | $0 |
| 2026-05-21 | Robinson V Daniel II | Director | Buy | 1,050 | $0 |
| 2026-05-21 | Salanger Matthew J | Director | Buy | 1,050 | $0 |
| 2026-05-21 | Ames Johanna R | Director | Buy | 1,050 | $0 |
| 2026-05-21 | Brown Jason David | Director | Buy | 1,050 | $0 |
| 2026-05-21 | Hoeller Heidi M | Director | Buy | 1,050 | $0 |
| 2026-05-18 | Wiles Amy | EVP, Chief Risk and Credit | Sell | 2,453 | $108,153 |
| 2026-05-18 | Sparks Martin Randolph | EVP,General Counsel,Secretary | Sell | 361 | $15,916 |
| 2026-05-18 | Smaniotto Cynthia A | EVP, Chief HR Officer | Sell | 285 | $12,566 |
| 2026-05-13 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Sell | 4,016 | $180,000 |
| 2026-03-25 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Buy | 2,777 | $0 |
| 2026-03-25 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Sell | 221 | $9,280 |
| 2026-03-25 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Sell | 706 | $29,645 |
| 2026-03-25 | Halliday Sarah A | EVP/Chief Comm Innovation Off | Buy | 2,569 | $0 |
Source: SEC Form 4 filings · as of 2026-07-30