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Disclosery

NBBK NB BANCORP INC

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COM (common), issuer CIK 1979330

160 managers (164 13F filers) reported a position in NBBK shares at 2025-12-31, 22,274,768 shares in all. 32 filers opened a position and 13 filers sold out during the quarter.

Managers
160
13F filers
164
New
32
Added
78
Reduced
35
Sold out
13
Shares held by filers
22,274,768

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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.3,103,770$61.5M<0.01%+281,64513F-HRTimelineGroup
Pertento Partners LLPin group Pertento Partners LLP2,343,776$46.5M5.1%+229,44013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,301,034$45.6M<0.01%+350,89913F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,471,189$29.2M0.01%-355,75013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,114,379$22.1M<0.01%-82,54313F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC966,662$19.2M<0.01%+90,01413F-HRTimelineGroup
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC701,992$13.9M0.04%+7,01013F-HRTimeline
AltraVue Capital, LLC693,000$13.7M1.13%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC593,888$11.8M<0.01%+68,99013F-HR/ATimelineGroup
Tieton Capital Management, LLC524,935$10.4M3.56%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding392,846$7.79M+52,877Timeline
FMR LLCin group FMR LLC383,212$7.6M<0.01%+58,53213F-HRTimelineGroup
Nuveen, LLCin group TIAA346,779$6.87M<0.01%+238,03513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co329,398$6.53M<0.01%+41,94313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP324,313$6.43M<0.01%+14,61413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP288,028$5.71M<0.01%new13F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.254,219$5.04M<0.01%+213,48913F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP251,512$4.98M<0.01%-25,58813F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC251,274$4.98M0.01%+140,37413F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY242,132$4.8M<0.01%+120,06313F-HR/ATimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC221,855$4.4M<0.01%+84,54213F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC193,150$3.83M0.08%+78,33813F-HRTimeline
UBS Group AGgroup of 2 filers holding185,286$3.67M-232,092Timeline
HENNESSY ADVISORS INC181,000$3.59M0.13%-4,00013F-HRTimeline
EJF Capital LP174,979$3.47M1.97%+2,17613F-HRTimeline
Legato Capital Management LLC171,361$3.4M0.29%new13F-HRTimeline
Empowered Funds, LLC153,150$3.04M0.05%+73,33813F-HR/ATimeline
PANAGORA ASSET MANAGEMENT INC150,391$2.98M0.01%-22,27113F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp149,221$2.96M<0.01%+50,39113F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND144,385$2.86M<0.01%+134,38513F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO143,784$2.85M<0.01%+120,28113F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP142,087$2.82M<0.01%+16,61813F-HRTimelineGroup
Financial Engines Advisors L.L.C.117,707$2.33M<0.01%-11,58113F-HRTimeline
MANGROVE PARTNERS IM, LLC111,356$2.21M0.18%-2,76113F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC106,457$2.11M<0.01%+47,13013F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC105,011$2.08M<0.01%+23,44213F-HRTimelineGroup
Focus Partners Wealthin group Focus Partners Wealth91,366$1.81M<0.01%+5,95413F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/90,641$1.8M<0.01%+25,22113F-HRTimelineGroup
INTERNATIONAL ASSETS INVESTMENT MANAGEM…86,900$1.72M0.12%013F-HRTimeline
Oppenheimer & Close, LLC82,999$1.65M1.12%013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC90,370$1.64M0.01%+43,69013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC81,641$1.62M<0.01%+27,45013F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC78,600$1.56M<0.01%+20013F-HRTimelineGroup
Swiss National Bank77,100$1.53M<0.01%+13,60013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS70,879$1.4M<0.01%+44,43213F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC70,772$1.4M<0.01%+17,89413F-HRTimelineGroup
STILWELL VALUE LLCin group STILWELL VALUE LLC65,000$1.29M0.71%-15,00013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC64,469$1.28M<0.01%+20,37913F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.63,337$1.26M<0.01%+10,46113F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc60,616$1.2M<0.01%-1,39813F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO59,213$1.17M<0.01%-60,46913F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC54,866$1.09M<0.01%-488,41613F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding54,392$1.08M-8,408Timeline
LYNCH & ASSOCIATES/IN54,334$1.08M0.2%-2,00013F-HRTimeline
Creative Planningin group Creative Planning52,495$1.04M<0.01%+23,82513F-HRTimelineGroup
RHUMBLINE ADVISERS52,211$1.03M<0.01%-96613F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC52,160$1.03M<0.01%+39013F-HRTimelineGroup
Round Rock Advisors LLC51,906$1.03M0.15%+17,93613F-HR/ATimeline
NIXON PEABODY TRUST CO48,516$962K0.07%new13F-HRTimeline
Integrated Wealth Concepts LLC47,596$943K0.01%+48213F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.45,766$907K<0.01%+3,14213F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN45,419$900K<0.01%+18,56613F-HRTimelineGroup
Integrated Quantitative Investments LLC40,944$812K0.17%+26,40213F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/39,493$783K<0.01%+20,93313F-HRTimeline
Verition Fund Management LLC38,264$758K<0.01%+3,39713F-HRTimeline
Aviance Capital Partners, LLC37,167$737K0.08%013F-HRTimeline
Mariner, LLCin group Mariner, LLC36,366$721K<0.01%+24,00313F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…36,093$715K<0.01%+6,92913F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.34,237$679K<0.01%+27,45413F-HRTimelineGroup
OCCUDO QUANTITATIVE STRATEGIES LP32,155$637K0.04%+13,59413F-HRTimeline
RAFFLES ASSOCIATES LP28,374$562K0.42%-2,76213F-HRTimeline
Brandywine Global Investment Management…in group Franklin Resources27,470$544K<0.01%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD26,641$528K<0.01%new13F-HRTimeline
Belvedere Trading LLC26,577$527K0.1%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\25,025$496K<0.01%+4,84313F-HRTimelineGroup
LPL Financial LLC24,328$482K<0.01%+6,33613F-HRTimeline
Rafferty Asset Management, LLC24,196$480K<0.01%-28,47213F-HRTimeline
Quantinno Capital Management LP23,321$462K<0.01%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…23,122$458K<0.01%-63313F-HRTimelineGroup
NORTHEAST INVESTMENT MANAGEMENT23,000$456K0.02%+7,00013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC22,885$454K<0.01%-12,70613F-HRTimelineGroup
Kestra Advisory Services, LLCgroup of 2 filers holding22,025$437K+2,361Timeline
Modera Wealth Management, LLC22,011$436K0.01%013F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC21,496$426K<0.01%new13F-HRTimeline
Four Tree Island Advisory LLC21,456$425K0.23%new13F-HRTimeline
ExodusPoint Capital Management, LP20,963$415K<0.01%-5,96713F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.20,905$414K<0.01%+8,58013F-HRTimelineGroup
Investment Advisory Group, LLC20,000$396K0.1%013F-HRTimeline
&PARTNERS19,830$393K<0.01%+1013F-HRTimeline
Connor, Clark & Lunn Investment Managem…19,759$392K<0.01%new13F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …18,866$374K<0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…18,550$368K<0.01%+2,27913F-HRTimelineGroup
NewEdge Wealth, LLC18,418$365K<0.01%new13F-HRTimeline
Qube Research & Technologies Ltd17,352$344K<0.01%-69,52313F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …16,846$334K<0.01%+16513F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV16,698$331K<0.01%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd16,681$331K0.01%new13F-HRTimeline
ROCKLAND TRUST CO15,969$317K0.01%new13F-HRTimeline
DAVIS R M INC15,930$316K0.01%new13F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC15,717$311K<0.01%new13F-HRTimelineGroup
Summit Wealth Group, LLC15,340$304K0.07%new13F-HRTimeline
HRT FINANCIAL LP15,064$298K<0.01%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson14,800$293K<0.01%013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC14,651$290K<0.01%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC14,266$283K<0.01%-3813F-HRTimeline
Bleakley Financial Group, LLC13,665$271K<0.01%new13F-HRTimeline
SG Americas Securities, LLC13,089$259K<0.01%-1,33813F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA12,400$246K<0.01%-92913F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …12,354$245K<0.01%+70813F-HRTimelineGroup
DIVERSIFIED TRUST CO12,284$243K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC12,002$238K<0.01%+213F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P11,700$232K0.01%-1,70013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM10,827$215K<0.01%new13F-HRTimeline
AFG FIDUCIARY SERVICES LIMITED PARTNERS…10,970$214K0.13%+97013F-HRTimeline
Gray Private Wealth, LLC10,588$210K0.1%013F-HRTimeline
Police & Firemen's Retirement System of…10,491$208K<0.01%+1,23413F-HRTimeline
GREAT OAK CAPITAL PARTNERS, LLC10,636$208K0.05%-20,28513F-HRTimeline
Cambridge Investment Research Advisors,…10,465$207K<0.01%new13F-HRTimeline
BARRETT & COMPANY, INC.10,000$198K0.07%013F-HRTimeline
Harbor Advisors LLC10,000$198K0.03%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…9,676$192K<0.01%013F-HRTimeline
AlphaQuest LLC9,486$188K0.01%-7,39613F-HRTimeline
KLP KAPITALFORVALTNING AS8,300$165K<0.01%+1,20013F-HRTimeline
FLAGSHIP HARBOR ADVISORS, LLC6,436$128K0.01%-5,47813F-HRTimeline
Allworth Financial LP5,835$116K<0.01%+5,82613F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…4,344$86.1K<0.01%-2,60113F-HRTimelineGroup
CWM, LLCin group CWM, LLC3,642$72K<0.01%+18513F-HRTimelineGroup
Larson Financial Group LLC3,629$71.9K<0.01%+3,09313F-HRTimeline
SHP Wealth Management3,454$68.5K0.01%13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,422$67.8K<0.01%+49613F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,516$49.9K<0.01%+99413F-HRTimelineGroup
Sterling Capital Management LLC2,300$45.6K<0.01%-11613F-HRTimeline
PENSION & WEALTH MANAGEMENT ADVISORS, I…2,135$42.3K0.01%013F-HRTimeline
State of Alaska, Department of Revenue1,630$32K<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,527$30.3K<0.01%013F-HR/ATimelineGroup
RESOURCES MANAGEMENT CORP /CT/ /ADV1,500$30K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,311$26K<0.01%+12713F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,286$25.5K<0.01%+55313F-HRTimelineGroup
AMALGAMATED BANK1,254$25K<0.01%-9313F-HRTimeline
Aquatic Capital Management LLC519$10.3K<0.01%-11,43613F-HRTimeline
GAMMA Investing LLC499$9.89K<0.01%+10313F-HRTimeline
Essential Partners LLC494$9.79K<0.01%+8913F-HRTimeline
EASTERN BANK288$5.71K<0.01%013F-HRTimeline
Eurizon Capital SGR S.p.A.275$5.45K<0.01%13F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.212$4.2K<0.01%013F-HRTimelineGroup
STRS OHIO200$3.96K<0.01%new13F-HRTimeline
IFP Advisors, Inc172$3.41K<0.01%+11713F-HRTimeline
Covestor Ltd128$3K<0.01%+313F-HRTimeline
Quarry LP115$2.28K<0.01%-1,65813F-HRTimeline
ROTHSCHILD INVESTMENT LLC87$1.72K<0.01%+5913F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…57$1.13K<0.01%+2213F-HRTimelineGroup
QUADRANT CAPITAL GROUP LLC57$1.13K<0.01%-29713F-HRTimeline
Smartleaf Asset Management LLC56$1.12K<0.01%new13F-HRTimeline
American Capital Advisory, LLC50$991<0.01%013F-HRTimeline
Parallel Advisors, LLC39$773<0.01%+1913F-HRTimeline
NISA INVESTMENT ADVISORS, LLC18$357<0.01%+413F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…6$119<0.01%new13F-HR/ATimelineGroup
Sunbelt Securities, Inc.5$99<0.01%new13F-HRTimeline
Arax Advisory Partners2$40<0.01%-68113F-HRTimeline
True Wealth Design, LLC2$40<0.01%new13F-HRTimeline