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NBT Bancorp Inc. (NBTB) institutional ownership

Market cap$2.1B SectorFinancial Services
Funds holding · Q1 2026
244
reported NBTB position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
143 buyers · 101 sellers

NBT Bancorp Inc. (NBTB) price and institutional activity

Dates

Q1 2026

$0 bought by 143 investors
Citadel Advisors LLCManufacturers Life Insurance Company, the +141 more
$0 sold by 101 investors
Deprince Race & Zollo IncRussell Investments Group, Ltd. +99 more
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Bought Sold Totals per quarter; hover a bar for the names.

NBT Bancorp Inc. (NBTB) institutional activity · 244

Investor Type Est. change Change Δ Own Date
Deprince Race & Zollo Inc · Exited
Change −496K Δ Own −100.0% Date Q1 2026
Deprince Race & Zollo Inc Exited· Q1 2026 −496K −100.0% Q1 2026
Citadel Advisors LLC Added· Q1 2026 +150K +152.1% Q1 2026
Manufacturers Life Insurance Company, the · Added
Change +128K Date Q1 2026
Manufacturers Life Insurance Company, the Added· Q1 2026 +128K Q1 2026
AQR Capital Management LLC · Added
Change +114K Date Q1 2026
AQR Capital Management LLC Added· Q1 2026 +114K Q1 2026
Russell Investments Group, Ltd. · Reduced
Change −100K Date Q1 2026
Russell Investments Group, Ltd. Reduced· Q1 2026 −100K Q1 2026
Two Sigma Investments, LP · Added
Change +100K Δ Own +179.0% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +100K +179.0% Q1 2026
Vanguard · Added
Change +97K Date Q1 2026
Vanguard Added· Q1 2026 +97K Q1 2026
Morgan Stanley · Reduced
Change −92K Date Q1 2026
Morgan Stanley Reduced· Q1 2026 −92K Q1 2026
Tudor Investment Corp Et Al · Reduced
Change −87K Date Q1 2026
Tudor Investment Corp Et Al Reduced· Q1 2026 −87K Q1 2026
Nuveen, LLC · Added
Change +86K Date Q1 2026
Nuveen, LLC Added· Q1 2026 +86K Q1 2026
FMR LLC · Added
Change +85K Δ Own +184.1% Date Q1 2026
FMR LLC Added· Q1 2026 +85K +184.1% Q1 2026
Edgestream Partners, L.P. · New
Change +84K Date Q1 2026
Edgestream Partners, L.P. New· Q1 2026 +84K Q1 2026
Ceredex Value Advisors LLC · Reduced
Change −70K Date Q1 2026
Ceredex Value Advisors LLC Reduced· Q1 2026 −70K Q1 2026
Barclays PLC · Reduced
Change −66K Date Q1 2026
Barclays PLC Reduced· Q1 2026 −66K Q1 2026
Y-Intercept (hong Kong) Ltd · Reduced
Change −60K Date Q1 2026
Y-Intercept (hong Kong) Ltd Reduced· Q1 2026 −60K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 244

Famous investor activity in NBT Bancorp Inc. (NBTB)

NBT Bancorp Inc. (NBTB) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Sparks Martin Randolph · Officer Sell −$58K
Price $48.04 Qty −1K Owned 14K Trade date Jun 12, 2026 Filed date Jun 12, 2026
Sparks Martin Randolph Officer Sell $48.04 −1K −$58K 14K Jun 12, 2026 Jun 12, 2026
Hoeller Heidi M. · Director Sell −$101K
Price $48.03 Qty −2K Owned 12K Trade date Jun 12, 2026 Filed date Jun 12, 2026
Hoeller Heidi M. Director Sell $48.03 −2K −$101K 12K Jun 12, 2026 Jun 12, 2026
Watt John H. Jr · Director Sell −$996K
Price $47.42 Qty −21K Owned 54K Trade date Jun 9, 2026 Filed date Jun 10, 2026
Watt John H. Jr Director Sell $47.42 −21K −$996K 54K Jun 9, 2026 Jun 10, 2026
Mahoney Ruth H. · Officer Sell −$233K
Price $46.60 Qty −5K Owned 16K Trade date Jun 5, 2026 Filed date Jun 8, 2026
Mahoney Ruth H. Officer Sell $46.60 −5K −$233K 16K Jun 5, 2026 Jun 8, 2026
Kowalczyk Andrew S. III · Director Grant (A) $52K
Price $45.86 Qty 1K Owned 8K Trade date May 21, 2026 Filed date May 22, 2026
Kowalczyk Andrew S. III Director Grant (A) $45.86 1K $52K 8K May 21, 2026 May 22, 2026
Watt John H. Jr · Director Grant (A) 1K
Owned 75K Trade date May 19, 2026 Filed date May 21, 2026
Watt John H. Jr Director Grant (A) 1K 75K May 19, 2026 May 21, 2026
Kowalczyk Andrew S. III · Director Grant (A) 1K
Owned 14K Trade date May 19, 2026 Filed date May 21, 2026
Kowalczyk Andrew S. III Director Grant (A) 1K 14K May 19, 2026 May 21, 2026
Ames Johanna R. · Director Grant (A) 1K
Owned 8K Trade date May 19, 2026 Filed date May 21, 2026
Ames Johanna R. Director Grant (A) 1K 8K May 19, 2026 May 21, 2026
Delaney Timothy E. · Director Grant (A) 1K
Owned 53K Trade date May 19, 2026 Filed date May 21, 2026
Delaney Timothy E. Director Grant (A) 1K 53K May 19, 2026 May 21, 2026
Cantele Richard J. Jr · Director Grant (A) 1K
Owned 58K Trade date May 19, 2026 Filed date May 21, 2026
Cantele Richard J. Jr Director Grant (A) 1K 58K May 19, 2026 May 21, 2026
Salanger Matthew J. · Director Grant (A) 1K
Owned 28K Trade date May 19, 2026 Filed date May 21, 2026
Salanger Matthew J. Director Grant (A) 1K 28K May 19, 2026 May 21, 2026
Dietrich Martin A. · Director Grant (A) 1K
Owned 112K Trade date May 19, 2026 Filed date May 21, 2026
Dietrich Martin A. Director Grant (A) 1K 112K May 19, 2026 May 21, 2026
Brown Jason David · Director Grant (A) 1K
Owned 8K Trade date May 19, 2026 Filed date May 21, 2026
Brown Jason David Director Grant (A) 1K 8K May 19, 2026 May 21, 2026
Hoeller Heidi M. · Director Grant (A) 1K
Owned 14K Trade date May 19, 2026 Filed date May 21, 2026
Hoeller Heidi M. Director Grant (A) 1K 14K May 19, 2026 May 21, 2026
Robinson V. Daniel II · Director Grant (A) 1K
Owned 22K Trade date May 19, 2026 Filed date May 21, 2026
Robinson V. Daniel II Director Grant (A) 1K 22K May 19, 2026 May 21, 2026
15 of 69
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NBT Bancorp Inc. (NBTB) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 6.7M
% of shares outstanding 14.3% Filing date Jan 23, 2024
BlackRock Inc. 6.7M 14.3% Jan 23, 2024
Vanguard Group Inc 5.6M
% of shares outstanding 12.0% Filing date Feb 13, 2024
Vanguard Group Inc 5.6M 12.0% Feb 13, 2024
Vanguard Portfolio Management 3.5M
% of shares outstanding 6.7% Filing date Apr 29, 2026
Vanguard Portfolio Management 3.5M 6.7% Apr 29, 2026
Vanguard Capital Management 2.6M
% of shares outstanding 5.1% Filing date Apr 30, 2026
Vanguard Capital Management 2.6M 5.1% Apr 30, 2026
4 of 4

NBT Bancorp Inc. (NBTB) ownership FAQ

Who owns NBTB?

244 reporting institutions disclosed NBTB position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.