Nbt Bancorp's three largest insider shareholders as of September 29, 2026 are V Daniel Ii Robinson (Director, 387.56K shares), Martin A Dietrich (President Ceo Nbt Bancorp, 112.29K shares), Joseph R Stagliano (Sevp President Of Nbt Bank, 85.45K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Martin A Dietrich | President Ceo Nbt Bancorp | 112,294 | 0 | 112,294 | 12.2% | 21 May, 2026 |
| 2 | Joseph R Stagliano | Sevp President Of Nbt Bank | 85,446 | 0 | 85,446 | 9.3% | 25 Mar, 2026 |
| 3 | David J Nasca | Director | 71,705 | 0 | 71,705 | 7.8% | 21 May, 2026 |
| 4 | Catherine Scarlett | Evp, Chief Hr Ethics Officer | 62,060 | 0 | 62,060 | 6.7% | 16 Dec, 2021 |
| 5 | Richard J Jr Cantele | Director | 58,106 | 0 | 58,106 | 6.3% | 21 May, 2026 |
| 6 | Scott Allen Kingsley | President Ceo Nbt Bancorp | 57,936 | 0 | 57,936 | 6.3% | 25 Mar, 2026 |
| 7 | John H Jr Watt | President Ceo Nbt Bancorp | 54,010 | 0 | 54,010 | 5.9% | 10 Jun, 2026 |
| 8 | Timothy E Delaney | Director | 52,935 | 0 | 52,935 | 5.8% | 21 May, 2026 |
| 9 | Lowell A Seifter | Director | 46,886 | 0 | 46,886 | 5.1% | 22 May, 2024 |
| 10 | Jack H Webb | Evp,Strategic Support | 45,018 | 0 | 45,018 | 4.9% | 25 Nov, 2024 |
| 11 | Shaunastar Hyle | Evp, Retail Community Banking | 29,298 | 0 | 29,298 | 3.2% | 25 Mar, 2026 |
| 12 | Matthew J Salanger | Director | 28,116 | 0 | 28,116 | 3.1% | 21 May, 2026 |
| 13 | Amy Wiles | Evp, Chief Risk And Credit | 27,161 | 0 | 27,161 | 3.0% | 18 May, 2026 |
| 14 | Annette L Burns | Evp Chief Financial Officer | 24,313 | 0 | 24,313 | 2.6% | 25 Mar, 2026 |
| 15 | Sarah A Halliday | Evp/Chief Comm Innovation Off | 22,054 | 0 | 22,054 | 2.4% | 30 Jul, 2026 |
| 16 | Joseph A Santangelo | Director | 21,764 | 0 | 21,764 | 2.4% | 19 May, 2022 |
| 17 | V Daniel Ii Robinson | Director | 21,755 | 0 | 21,755 | 2.4% | 21 May, 2026 |
| 18 | Cynthia A Smaniotto | Evp, Chief Hr Officer | 17,747 | 0 | 17,747 | 1.9% | 18 May, 2026 |
| 19 | Martin Randolph Sparks | Evp,General Counsel,Secretary | 14,463 | 0 | 14,463 | 1.6% | 12 Jun, 2026 |
| 20 | James H Douglas | Director | 14,350 | 0 | 14,350 | 1.6% | 17 May, 2023 |
| 21 | Andrew S Iii Kowalczyk | Director | 13,642 | 0 | 13,642 | 1.5% | 21 May, 2026 |
| 22 | Ruth H Mahoney | Evp/President Of Wealth Mgmt | 11,928 | 0 | 11,928 | 1.3% | 30 Jul, 2026 |
| 23 | Heidi M Hoeller | Director | 11,560 | 0 | 11,560 | 1.3% | 12 Jun, 2026 |
| 24 | Jason David Brown | Director | 8,414 | 0 | 8,414 | 0.9% | 21 May, 2026 |
| 25 | Johanna R Ames | Director | 7,593 | 0 | 7,593 | 0.8% | 21 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 29 Jul, 2026 | Sarah A Halliday | Evp/Chief Comm Innovation Off | Disposed S | 9,000 | $54.04 | $486.40K | 22,054 | Direct |
| 29 Jul, 2026 | Ruth H Mahoney | Evp/President Of Wealth Mgmt | Disposed S | 4,500 | $54.30 | $244.35K | 11,928 | Direct |
| 12 Jun, 2026 | Heidi M Hoeller | Director | Disposed S | 2,100 | $48.04 | $100.87K | 11,560 | Direct |
| 12 Jun, 2026 | Martin Randolph Sparks | Evp,General Counsel,Secretary | Disposed S | 1,200 | $48.04 | $57.65K | 14,463 | Direct |
| 09 Jun, 2026 | John H Jr Watt | Director | Disposed S | 21,000 | $47.42 | $995.75K | 54,010 | Direct |
| 05 Jun, 2026 | Ruth H Mahoney | Evp/President Of Wealth Mgmt | Disposed S | 5,000 | $46.60 | $233.00K | 16,428 | Direct |
| 21 May, 2026 | Andrew S Iii Kowalczyk | Director | Acquired A | 1,128 | $45.86 | $51.75K | 7,727 | Direct |
| 19 May, 2026 | Timothy E Delaney | Director | Acquired A | 1,050 | $0.00 | $0 | 52,935 | Direct |
| 19 May, 2026 | Martin A Dietrich | Director | Acquired A | 1,050 | $0.00 | $0 | 112,294 | Direct |
| 19 May, 2026 | Richard J Jr Cantele | Director | Acquired A | 1,050 | $0.00 | $0 | 58,106 | Direct |
| 19 May, 2026 | John H Jr Watt | Director | Acquired A | 1,050 | $0.00 | $0 | 75,010 | Direct |
| 19 May, 2026 | Heidi M Hoeller | Director | Acquired A | 1,050 | $0.00 | $0 | 13,660 | Direct |
| 19 May, 2026 | Jason David Brown | Director | Acquired A | 1,050 | $0.00 | $0 | 8,414 | Direct |
| 19 May, 2026 | Andrew S Iii Kowalczyk | Director | Acquired A | 1,050 | $0.00 | $0 | 13,642 | Direct |
| 19 May, 2026 | V Daniel Ii Robinson | Director | Acquired A | 1,050 | $0.00 | $0 | 21,755 | Direct |
| 19 May, 2026 | Matthew J Salanger | Director | Acquired A | 1,050 | $0.00 | $0 | 28,116 | Direct |
| 19 May, 2026 | David J Nasca | Director | Acquired A | 1,050 | $0.00 | $0 | 71,705 | Direct |
| 19 May, 2026 | Johanna R Ames | Director | Acquired A | 1,050 | $0.00 | $0 | 7,593 | Direct |
| 15 May, 2026 | Martin Randolph Sparks | Evp,General Counsel,Secretary | Disposed F | 361 | $44.09 | $15.92K | 15,663 | Direct |
| 15 May, 2026 | Cynthia A Smaniotto | Evp, Chief Hr Officer | Disposed F | 285 | $44.09 | $12.57K | 17,747 | Direct |