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Disclosery

NBBK NB BANCORP INC

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COM (common), issuer CIK 1979330

155 managers (161 13F filers) reported a position in NBBK shares at 2026-06-30, 22,503,321 shares in all. 12 filers opened a position and 26 filers sold out during the quarter.

Managers
155
13F filers
161
New
12
Added
69
Reduced
48
Sold out
26
Shares held by filers
22,503,321

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.3,331,544$70.4M<0.01%+247,32213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding2,378,707$50.3M-21,336Timeline
AltraVue Capital, LLC1,655,108$35M2.52%+351,02813F-HRTimeline
Pertento Partners LLPin group Pertento Partners LLP1,475,770$31.2M2.24%-730,89613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,471,766$31.1M<0.01%+178,22813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,153,217$24.4M<0.01%+54,28713F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP753,320$15.9M<0.01%+230,93613F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC571,954$12.1M<0.01%-119,71413F-HRTimelineGroup
Tieton Capital Management, LLC546,600$11.6M3.32%-6,97013F-HRTimeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC501,172$10.6M0.03%+50,40013F-HRTimeline
Nuveen, LLCin group TIAA498,869$10.5M<0.01%+10,83613F-HRTimelineGroup
FMR LLCin group FMR LLC497,305$10.5M<0.01%+59,58013F-HRTimelineGroup
Legato Capital Management LLC366,090$7.74M0.64%+90,02013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP360,492$7.62M<0.01%+25,13213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND346,155$7.31M0.01%+85,57013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co318,612$6.73M<0.01%+24713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC289,814$6.12M<0.01%+173,44313F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP277,027$5.85M<0.01%-94,78013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC261,866$5.53M<0.01%-1,79013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY229,194$4.84M<0.01%-50,67613F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC221,399$4.68M0.08%+13,00513F-HRTimeline
Empowered Funds, LLC181,399$3.83M0.02%+13,00513F-HRTimeline
UBS Group AGgroup of 2 filers holding178,764$3.78M+63,282Timeline
HENNESSY ADVISORS INC178,000$3.76M0.12%-2,00013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp171,541$3.62M<0.01%+23,47513F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.149,931$3.17M<0.01%+79,54613F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO142,346$3.01M<0.01%-159,83513F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP142,253$3.01M<0.01%+1,98913F-HRTimelineGroup
INTERNATIONAL ASSETS INVESTMENT MANAGEM…131,013$2.83M0.17%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC131,440$2.78M<0.01%-132,46613F-HRTimeline
ALLIANCEBERNSTEIN L.P.130,219$2.74M<0.01%013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC129,355$2.73M0.01%-20,74113F-HRTimeline
Qube Research & Technologies Ltd127,236$2.69M<0.01%-47,83013F-HRTimeline
Financial Engines Advisors L.L.C.126,788$2.68M<0.01%+1,06513F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP123,112$2.6M<0.01%new13F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC116,349$2.46M<0.01%-12,47213F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC111,356$2.35M0.15%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.97,941$2.07M<0.01%-3,30313F-HRTimelineGroup
Oppenheimer & Close, LLC82,999$1.75M1.11%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC81,447$1.72M<0.01%-76,79613F-HRTimelineGroup
Integrated Wealth Concepts LLC78,691$1.66M0.01%+30,76413F-HRTimeline
Swiss National Bank77,100$1.63M<0.01%013F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A70,000$1.48M<0.01%013F-HRTimelineGroup
MACKENZIE FINANCIAL CORP67,441$1.43M<0.01%+16,54413F-HRTimeline
Creative Planningin group Creative Planning67,320$1.42M<0.01%-3,58613F-HRTimelineGroup
Round Rock Advisors LLC66,530$1.41M0.18%+6313F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth65,728$1.39M<0.01%-27,08113F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS62,478$1.32M<0.01%+9,47313F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC59,231$1.25M<0.01%+3,86713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc56,718$1.2M<0.01%+3,71013F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd54,541$1.15M0.02%new13F-HRTimeline
RHUMBLINE ADVISERS52,690$1.11M<0.01%-48513F-HRTimeline
LYNCH & ASSOCIATES/IN50,334$1.06M0.19%-3,00013F-HRTimeline
STILWELL VALUE LLCin group STILWELL VALUE LLC50,000$1.06M0.61%-15,00013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/48,905$1.03M<0.01%-69,89613F-HRTimelineGroup
NIXON PEABODY TRUST CO48,516$1.03M0.07%013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC46,899$991K<0.01%+4,94013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC46,580$984K<0.01%+13,12913F-HRTimelineGroup
Trexquant Investment LP46,312$979K0.01%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/46,016$973K<0.01%+4,94413F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.44,967$950K<0.01%+11,06813F-HRTimelineGroup
Quantinno Capital Management LP44,137$933K<0.01%+18,19613F-HRTimeline
WEDGE CAPITAL MANAGEMENT L L P/NC43,216$913K0.02%+86013F-HRTimeline
Mariner, LLCin group Mariner, LLC42,471$897K<0.01%-7,02413F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd41,912$886K0.01%+2,13013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\41,024$867K<0.01%+9,91813F-HRTimelineGroup
EJF Capital LP40,751$861K0.58%-70613F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…39,017$824K<0.01%+3,22013F-HR/ATimeline
Aviance Capital Partners, LLC38,173$807K0.08%+1,00613F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD38,169$807K<0.01%+13,78313F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …35,981$760K<0.01%-4,29513F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN35,185$743K<0.01%+19,02813F-HRTimelineGroup
Bleakley Financial Group, LLC34,272$724K0.01%+20,70913F-HRTimeline
RAFFLES ASSOCIATES LP31,874$673K0.57%+17,00013F-HR/ATimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …30,429$658K<0.01%+95513F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC29,914$632K<0.01%+19,96713F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources28,370$599K<0.01%+1,10013F-HRTimelineGroup
LPL Financial LLC26,409$558K<0.01%+4913F-HRTimeline
Rafferty Asset Management, LLC25,529$539K<0.01%-4,46913F-HRTimeline
NORTHEAST INVESTMENT MANAGEMENT25,000$528K0.02%013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…24,072$509K<0.01%+1,26613F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC23,951$506K<0.01%+85213F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…21,332$451K<0.01%+16,98813F-HRTimelineGroup
MIRABELLA FINANCIAL SERVICES LLP20,227$427K0.04%new13F-HRTimeline
Investment Advisory Group, LLC20,000$423K0.09%013F-HRTimeline
&PARTNERS19,730$417K<0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO19,283$409K<0.01%-16,80513F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC19,285$407K<0.01%-3,20713F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…18,740$396K<0.01%+4713F-HRTimelineGroup
Harbor Advisors LLC17,500$370K0.05%+7,50013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV16,992$359K<0.01%+5,28913F-HR/ATimeline
Zurcher Kantonalbank (Zurich Cantonalba…16,976$359K<0.01%013F-HRTimeline
KESTRA PRIVATE WEALTH SERVICES, LLCin group Kestra Advisory Services, LLC16,766$354K<0.01%-96513F-HRTimelineGroup
ROCKLAND TRUST CO15,969$337K0.01%013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC15,558$329K<0.01%-1,83013F-HRTimelineGroup
ExodusPoint Capital Management, LP15,487$327K<0.01%+1,05013F-HRTimeline
Summit Wealth Group, LLC15,340$324K0.07%013F-HRTimeline
Flywheel Private Wealth LLC15,000$317K0.16%013F-HRTimeline
Jupiter Topco LLCin group Janus Henderson14,800$313K<0.01%13F-HRTimelineGroup
SG Americas Securities, LLC13,672$289K<0.01%+3,64813F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…13,474$285K<0.01%+1,30313F-HRTimelineGroup
IMC-Chicago, LLC13,027$275K<0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…12,624$267K<0.01%+2,13313F-HRTimeline
AFG FIDUCIARY SERVICES LIMITED PARTNERS…12,493$264K0.21%+80013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA12,407$262K<0.01%-86113F-HRTimelineGroup
Farther Finance Advisors, LLC12,005$254K<0.01%-1313F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …11,222$237K<0.01%+31413F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM10,593$224K<0.01%-9313F-HRTimeline
Gray Private Wealth, LLC10,588$224K0.1%013F-HRTimeline
GREAT OAK CAPITAL PARTNERS, LLC10,636$224K0.05%013F-HRTimeline
Sequoia Financial Advisors, LLC10,580$224K<0.01%new13F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP10,441$221K<0.01%new13F-HR/ATimelineGroup
Cambridge Investment Research Advisors,…10,365$219K<0.01%013F-HR/ATimeline
BARRETT & COMPANY, INC.10,000$211K0.06%013F-HRTimeline
Pallas Capital Advisors LLC9,973$211K0.01%+1813F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding9,797$207K-95,006Timeline
KLP KAPITALFORVALTNING AS8,300$175K<0.01%013F-HRTimeline
PENSION & WEALTH MANAGEMENT ADVISORS, I…6,155$130K0.04%+1413F-HRTimeline
Larson Financial Group LLC3,803$80.4K<0.01%-13813F-HRTimeline
SHP Wealth Management3,459$73.1K0.01%+313F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,422$72.3K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,738$57.9K<0.01%+65713F-HRTimelineGroup
SIMPLEX TRADING, LLC1,751$37K<0.01%+87413F-HRTimeline
State of Alaska, Department of Revenue1,630$34K<0.01%013F-HRTimeline
Aquatic Capital Management LLC1,529$32.3K<0.01%-5613F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,527$32.3K<0.01%013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,348$28.5K<0.01%+3313F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,303$27.5K<0.01%-813F-HRTimelineGroup
Arax Advisory Partners1,272$26.9K<0.01%+1,21913F-HRTimeline
NISA INVESTMENT ADVISORS, LLC1,084$22.9K<0.01%+1,06613F-HRTimeline
Sterling Capital Management LLC820$17.3K<0.01%-12,51213F-HRTimeline
Stone House Investment Management, LLC818$17.3K<0.01%013F-HRTimeline
Covestor Ltd517$11K0.01%+48313F-HRTimeline
GAMMA Investing LLC444$9.38K<0.01%-10913F-HRTimeline
SIGNATUREFD, LLC424$8.96K<0.01%+37713F-HRTimeline
EASTERN BANK288$6.08K<0.01%013F-HRTimeline
STRS OHIO200$4.23K<0.01%013F-HRTimeline
IFP Advisors, Inc185$3.91K<0.01%+1313F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.168$3.55K<0.01%-413F-HRTimelineGroup
Essential Partners LLC143$3.02K<0.01%-35313F-HRTimeline
Allworth Financial LP118$2.49K<0.01%-5,84813F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT114$2.41K<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC109$2.3K<0.01%-5913F-HRTimeline
Minot DeBlois Advisors LLC85$1.8K<0.01%new13F-HRTimeline
Silver Grove Financial Group, Inc.85$1.8K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…57$1.2K<0.01%013F-HRTimelineGroup
Smartleaf Asset Management LLC56$1.19K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\50$1.06K<0.01%-313F-HRTimelineGroup
American Capital Advisory, LLC50$1.06K<0.01%013F-HRTimeline
Quarry LP23$486<0.01%-1013F-HRTimeline
Physician Wealth Advisors, Inc.17$360<0.01%new13F-HRTimeline
Parallel Advisors, LLC15$317<0.01%-2413F-HRTimeline
Caitong International Asset Management …6$127<0.01%-613F-HRTimeline
True Wealth Design, LLC2$43<0.01%013F-HRTimeline
Clearstead Advisors, LLC1$22<0.01%new13F-HRTimeline