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Disclosery

ISBA ISABELLA BK CORP

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COMMON STOCK (common), issuer CIK 842517

41 managers (43 13F filers) reported a position in ISBA shares at 2026-03-31, 1,003,877 shares in all. 10 filers opened a position and 3 filers sold out during the quarter.

Managers
41
13F filers
43
New
10
Added
12
Reduced
6
Sold out
3
Shares held by filers
1,003,877

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
VANGUARD GROUP INCgroup of 3 filers holding317,479$14.5MnewTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC107,356$4.9M<0.01%+94,25113F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.100,201$4.58M<0.01%-57113F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…94,742$4.33M0.01%+42,29613F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC80,402$3.67M<0.01%+2,92113F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP53,678$2.45M<0.01%+29,96013F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.27,021$1.23M0.02%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP22,052$1.01M<0.01%+13,46113F-HRTimelineGroup
Qube Research & Technologies Ltd21,534$983K<0.01%+2,86813F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC20,825$951K<0.01%+93713F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC18,043$824K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP14,740$673K<0.01%013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC14,240$650K0.01%new13F-HRTimeline
UBS Group AGin group UBS Group AG13,389$611K<0.01%+9,56413F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/9,316$425K<0.01%+4,99813F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY9,182$419K<0.01%+78313F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP8,840$403K<0.01%new13F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC7,147$326K<0.01%-1,25113F-HRTimelineGroup
Schonfeld Strategic Advisors LLC6,505$297K<0.01%new13F-HRTimeline
FourThought Financial Partners, LLC6,392$292K0.03%-1,00013F-HRTimeline
HRT FINANCIAL LP6,343$289K<0.01%new13F-HRTimeline
Integrated Wealth Concepts LLC6,091$278K<0.01%-2013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.5,989$274K<0.01%+2213F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC5,290$242K<0.01%+3,03713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC5,289$242K<0.01%-46813F-HRTimelineGroup
NORRIS PERNE & FRENCH LLP/MI5,151$235K0.01%013F-HRTimeline
Catalyst Funds Management Pty Ltd5,074$232K0.04%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…4,615$211K<0.01%new13F-HRTimelineGroup
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp2,563$117K<0.01%013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC1,027$46.9K<0.01%-2,33413F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS856$39.1K<0.01%new13F-HRTimelineGroup
CWM, LLCin group CWM, LLC756$34.5K<0.01%013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN500$22.8K<0.01%013F-HR/ATimelineGroup
MAI Capital Management350$16K<0.01%013F-HRTimeline
Clearstead Advisors, LLC281$12.8K<0.01%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK250$11.4K<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP150$6.86K<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA89$4K<0.01%new13F-HRTimelineGroup
Advisory Services Network, LLC60$2.74K<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC50$2.28K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.19$868<0.01%013F-HRTimelineGroup