SEC Form 4 · Updated Daily

NBTB

— NBT BANCORP INC. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
ROBINSON VAN NESS D	Director	812,558	2007-02-07	S
CHOJNOWSKI RICHARD	Director	279,070	2014-12-18	M
FORSYTHE DARYL R	Director	117,240	2015-05-01	A
DIETRICH MARTIN A	Director	112,294	2026-05-19	A
GUMBLE WILLIAM C	Director	97,558	2009-04-30	A
GREGORY PETER B DDS	Director	95,042	2007-05-01	A
Stagliano Joseph R	Officer	86,235.367	2026-03-23	A
NASCA DAVID J	Director	71,705	2026-05-19	A
Brenner Timothy	Officer	64,594	2021-05-15	F
SOLOMON PAUL M	Director	64,205.96	2014-05-01	A
Scarlett Catherine	Officer	62,060.26	2021-12-15	F
LEVY JEFFREY M	Officer	61,139.1	2016-07-27	M
CANTELE RICHARD J JR	Director	58,105.798	2026-05-19	A
Kingsley Scott Allen	Officer	57,936	2026-03-23	A
CHEWENS MICHAEL J	Officer	54,704	2019-05-15	F
WATT JOHN H JR	Director	54,010	2026-06-09	S
DELANEY TIMOTHY E	Director	52,935	2026-05-19	A
SEIFTER LOWELL A	Director	46,885.56	2024-05-21	A
WEBB JACK H	Director	45,018	2024-11-22	S
MITCHELL JOHN C	Director	35,635	2021-05-25	A
MURPHY MICHAEL M	Director	34,532	2016-05-01	A
PRENTICE F SHELDON	Officer	32,534	2018-03-26	A
CIVIL PATRICIA T	Director	30,069.61	2021-05-25	A
Hyle Shaunastar	Officer	29,298	2026-03-23	A
Salanger Matthew J	Director	28,116	2026-05-19	A
Wiles Amy	Officer	27,161	2026-05-15	F
NASSER JOSEPH G	Director	26,103	2012-08-16	S
RAVEN DAVID E	Officer	24,724.03	2016-01-15	F
Burns Annette L	Officer	24,312.673	2026-03-23	A
Durkee Matthew K	Officer	22,915	2021-05-18	S
Halliday Sarah A	Officer	22,054	2026-07-29	S
SANTANGELO JOSEPH A	Director	21,764	2022-05-17	A
Robinson V Daniel II	Director	21,754.853	2026-05-19	A
Wadsworth Robert A	Director	18,420.4	2020-05-19	A
Smaniotto Cynthia A	Officer	17,746.927	2026-05-15	F
HORGER PAUL D	Director	17,384	2007-05-01	A
INGRAHAM JANET H	Director	17,192.97	2007-10-30	M
OWENS WILLIAM L	Director	14,540.92	2009-04-30	A
Sparks Martin Randolph	Officer	14,462.882	2026-06-12	S
Douglas James H	Director	14,350.29	2023-05-16	A
Kowalczyk Andrew S III	Director	13,641.843	2026-05-19	A
Mahoney Ruth H	Officer	11,927.542	2026-07-29	S
Trafton Hamblett Tara Flynn	Officer	11,866.36	2026-06-01	—
Hoeller Heidi M	Director	11,560	2026-06-12	S
Brown Jason David	Director	8,414	2026-05-19	A
Ames Johanna R	Director	7,593	2026-05-19	A
HUTCHERSON MICHAEL H	Director	6,712.75	2007-05-01	A
Moran John V	Officer	6,058	2021-01-15	F
Kelley Angela M	Officer	5,651	2021-03-22	A
Testa Alfred V	Officer	5,643	2026-05-19	—
Bentley Ronald M	Director	3,266	2006-07-28	M
Sergienko Joseph P	Officer	2,863	2026-06-01	—
Boynton Kimberly	Director	539	2026-10-01	—

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-10-01	Boynton Kimberly	—	—	—	539
2026-07-29	Halliday Sarah A	Open-market sale	9,000	$54.04	22,054
2026-07-29	Mahoney Ruth H	Open-market sale	4,500	$54.30	11,927.542
2026-06-12	Hoeller Heidi M	Open-market sale	2,100	$48.03	11,560
2026-06-12	Sparks Martin Randolph	Open-market sale	1,200	$48.04	14,462.882
2026-06-09	WATT JOHN H JR	Open-market sale	21,000	$47.42	54,010
2026-06-05	Mahoney Ruth H	Open-market sale	5,000	$46.60	16,427.542
2026-06-01	Sergienko Joseph P	—	—	—	2,863
2026-06-01	Sergienko Joseph P	—	—	—	123.32
2026-06-01	Trafton Hamblett Tara Flynn	—	—	—	11,866.36
2026-05-21	Kowalczyk Andrew S III	Grant / award (derivative)	1,128.434	$45.86	7,726.928
2026-05-19	Testa Alfred V	—	—	—	5,643
2026-05-19	Testa Alfred V	—	—	—	2,603.67
2026-05-19	NASCA DAVID J	Grant / award	1,050	$0.00	71,705
2026-05-19	Robinson V Daniel II	Grant / award	1,050	$0.00	21,754.853
2026-05-19	Hoeller Heidi M	Grant / award	1,050	$0.00	13,660
2026-05-19	Brown Jason David	Grant / award	1,050	$0.00	8,414
2026-05-19	DIETRICH MARTIN A	Grant / award	1,050	$0.00	112,294
2026-05-19	Salanger Matthew J	Grant / award	1,050	$0.00	28,116
2026-05-19	CANTELE RICHARD J JR	Grant / award	1,050	$0.00	58,105.798
2026-05-19	DELANEY TIMOTHY E	Grant / award	1,050	$0.00	52,935
2026-05-19	Ames Johanna R	Grant / award	1,050	$0.00	7,593
2026-05-19	Kowalczyk Andrew S III	Grant / award	1,050	$0.00	13,641.843
2026-05-19	WATT JOHN H JR	Grant / award	1,050	$0.00	75,010
2026-05-15	Wiles Amy	Tax withholding	2,453	$44.09	27,161
2026-05-15	Smaniotto Cynthia A	Tax withholding	285	$44.09	17,746.927
2026-05-15	Sparks Martin Randolph	Tax withholding	361	$44.09	15,662.882
2026-05-11	Halliday Sarah A	I	4,015.748	$44.82	3,637.129
2026-03-23	Burns Annette L	Grant / award	234	$0.00	24,312.673
2026-03-23	Burns Annette L	Tax withholding	65	$41.99	24,078.673
2026-03-23	Burns Annette L	Tax withholding	21	$41.99	24,143.673
2026-03-23	Burns Annette L	Grant / award	3,275	$0.00	24,164.673
2026-03-23	Smaniotto Cynthia A	Grant / award	212	$0.00	18,031.927
2026-03-23	Smaniotto Cynthia A	Tax withholding	47	$41.99	17,819.927
2026-03-23	Smaniotto Cynthia A	Tax withholding	15	$41.99	17,866.927
2026-03-23	Smaniotto Cynthia A	Grant / award	2,042	$0.00	17,881.927
2026-03-23	Mahoney Ruth H	Grant / award	2,507	$0.00	21,427.542
2026-03-23	Mahoney Ruth H	Tax withholding	689	$41.99	18,920.542
2026-03-23	Mahoney Ruth H	Tax withholding	215	$41.99	19,609.542
2026-03-23	Mahoney Ruth H	Grant / award	2,961	$0.00	19,824.542

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.