ISBA · Isabella Bank Corp · Shareholders & Ownership

$36.99 -0.13 (-0.35%)

Russell 2000 member Rebalance outlook locked

Market Cap

$283.18M

7.63M

Volume · Oct 21 18.66K Avg daily vol (3M) 54.61K

Every disclosed holder of ISBA in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns ISBA

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	60	1,543,579	20.23%	Yes
Insiders (Forms 3, 4, 5)	18	217,454	2.85%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	5,867,840	76.92%	Rest
Registered funds (N-PORT, not summed)	74	856,703	11.23%	No

Shares outstanding: 7,628,873, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of ISBA

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	467,431	6.13%	+367,230	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	467,431	6.13%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
1.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	157,667	2.07%	—	Jun 30, 2026	iShares Trust, not summed
1.3	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	66,605	0.87%	—	Jun 30, 2026	iShares Trust, not summed
1.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	23,430	0.31%	—	Jun 30, 2026	iShares Trust, not summed
1.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	12,972	0.17%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
2	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	299,599	3.93%	+25,551	Jun 30, 2026	carried, not yet filed for the newest quarter
3	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	209,680	2.75%	+21,356	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
4	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	176,251	2.31%	+95,849	Jun 30, 2026	carried, not yet filed for the newest quarter
5	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	86,581	1.13%	+64,529	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	State Street(R) SPDR(R) US Small Cap Low Volatility Index ETF Fund S000039795 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	10,487	0.14%	—	Jun 30, 2026	SPDR SERIES TRUST, not summed
5.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	1,100	0.01%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
5.3	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	175	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
6	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	82,659	1.08%	+5,451	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
7	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	53,471	0.70%	+38,731	Jun 30, 2026	carried, not yet filed for the newest quarter
7.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	3,557	0.05%	—	Jun 30, 2026	Northern Funds, not summed
8	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	46,742	0.61%	+46,742	Jun 30, 2026	carried, not yet filed for the newest quarter
9	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	46,482	0.61%	+5,728	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Barnes Jeffrey J Insider CIK 1479944 · Sep 1, 2026 Director, issuer-wide	42,785	0.56%	+258	Sep 1, 2026	Director, issuer-wide
11	Schwind Jerome E Insider CIK 1596032 · Sep 1, 2026 Director, President & CEO, issuer-wide	37,777	0.50%	+148	Sep 1, 2026	Director, President & CEO, issuer-wide
12	HARBOUR INVESTMENTS, INC. 13F CIK 810121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	32,988	0.43%	+5,967	Jun 30, 2026	carried, not yet filed for the newest quarter
13	VICTORY CAPITAL MANAGEMENT INC 13F CIK 1040188 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	31,000	0.41%	+31,000	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	Victory Integrity Discovery Fund Fund S000046401 · Registered fund · Jun 30, 2026 Victory Portfolios, not summed	17,600	0.23%	—	Jun 30, 2026	Victory Portfolios, not summed
13.2	Victory Extended Market Index Fund Fund S000012941 · Registered fund · Jul 31, 2026 Victory Portfolios III, not summed	788	0.01%	+33	Jul 31, 2026	Victory Portfolios III, not summed
14	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	27,462	0.36%	+6,637	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Evans Jae A Insider CIK 1595809 · Mar 2, 2026 Director, issuer-wide	26,971	0.35%	+18	Mar 2, 2026	Director, issuer-wide
16	Opperman Sarah R Insider CIK 1554598 · Sep 1, 2026 Director, issuer-wide	24,586	0.32%	+72	Sep 1, 2026	Director, issuer-wide
17	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	23,858	0.31%	+23,858	Jun 30, 2026	carried, not yet filed for the newest quarter
18	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	20,321	0.27%	+20,321	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	16,815	0.22%	—	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
18.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	3,500	0.05%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
19	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	19,931	0.26%	+1,888	Jun 30, 2026	carried, not yet filed for the newest quarter
20	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	19,865	0.26%	-33,813	Jun 30, 2026	carried, not yet filed for the newest quarter
21	Prisby Michael P Insider CIK 1521164 · May 21, 2025 Treasurer, issuer-wide	18,658	0.24%	-1,000	May 21, 2025	Treasurer, issuer-wide
22	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	16,773	0.22%	+16,773	Jun 30, 2026	carried, not yet filed for the newest quarter
23	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	14,240	0.19%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
23.1	Ultra-Small Company Fund Fund S000004423 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	14,240	0.19%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
24	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	14,147	0.19%	+8,858	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	12,690	0.17%	+12,690	Jun 30, 2026	carried, not yet filed for the newest quarter
25.1	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	9,207	0.12%	—	Jul 31, 2026	TIAA-CREF Funds, not summed
26	Avantis U.S. Small Cap Value ETF Fund S000066459 · Registered fund · May 31, 2026 American Century ETF Trust, not summed	12,310	0.16%	-992	May 31, 2026	American Century ETF Trust, not summed
27	McDonnell Neil Michael Insider CIK 1666463 · Sep 1, 2026 Director, President, issuer-wide	12,281	0.16%	+37	Sep 1, 2026	Director, President, issuer-wide
28	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	10,550	0.14%	+1,234	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Rupp Vicki L Insider CIK 1795323 · Sep 1, 2026 Director, issuer-wide	9,896	0.13%	+42	Sep 1, 2026	Director, issuer-wide
30	Walleye Capital LLC 13F CIK 1758720 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,994	0.12%	+8,994	Jun 30, 2026	carried, not yet filed for the newest quarter
31	WHEELER PEGGY Insider CIK 1257659 · May 1, 2025 Chief Operations Officer, issuer-wide	8,871	0.12%	+10	May 1, 2025	Chief Operations Officer, issuer-wide
32	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,840	0.12%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
32.1	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	1,665	0.02%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
32.2	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	919	0.01%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
32.3	U.S. VECTOR EQUITY PORTFOLIO Fund S000000982 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	387	0.01%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
32.4	Dimensional US Sustainability Core 1 ETF Fund S000076639 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	313	0.00%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
32.5	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	306	0.00%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
33	Mattson Financial Services, LLC 13F CIK 2034595 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	8,534	0.11%	+8,534	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Payton Chad R Insider CIK 1849165 · Jun 2, 2025 Director, issuer-wide	7,473	0.10%	+30	Jun 2, 2025	Director, issuer-wide
35	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	7,358	0.10%	-14,176	Jun 30, 2026	carried, not yet filed for the newest quarter
36	EQ/2000 Managed Volatility Portfolio Fund S000025800 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	7,318	0.10%	—	Jun 30, 2026	EQ Advisors Trust, not summed
37	Schaefer William M Insider CIK 2018992 · May 1, 2025 Chief Financial Officer, issuer-wide	7,249	0.10%	+81	May 1, 2025	Chief Financial Officer, issuer-wide
38	Avantis U.S. Small Cap Equity ETF Fund S000074835 · Registered fund · May 31, 2026 American Century ETF Trust, not summed	7,115	0.09%	+3,987	May 31, 2026	American Century ETF Trust, not summed
39	DEUTSCHE BANK AG\ 13F CIK 948046 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	6,774	0.09%	+6,774	Jun 30, 2026	carried, not yet filed for the newest quarter
39.1	DWS Small Cap Index VIP Fund S000006223 · Registered fund · Jun 30, 2026 DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed	1,091	0.01%	—	Jun 30, 2026	DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
40	FourThought Financial Partners, LLC 13F CIK 1956790 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,392	0.08%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
41	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	6,313	0.08%	+5,813	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Invesco Ltd. 13F CIK 914208 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,141	0.08%	+6,141	Jun 30, 2026	carried, not yet filed for the newest quarter
42.1	Invesco RAFI US 1500 Small-Mid ETF Fund S000013120 · Registered fund · Jul 31, 2026 Invesco Exchange-Traded Fund Trust, not summed	1,977	0.03%	+1,134	Jul 31, 2026	Invesco Exchange-Traded Fund Trust, not summed
43	Integrated Wealth Concepts LLC 13F CIK 1737109 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,107	0.08%	+16	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Bourland Jill Insider CIK 1715727 · Oct 16, 2026 Director, issuer-wide	5,933	0.08%	+17	Oct 16, 2026	Director, issuer-wide
45	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,695	0.07%	+5,695	Jun 30, 2026	carried, not yet filed for the newest quarter
45.1	T. Rowe Price Small-Cap Index Fund Fund S000051327 · Registered fund · Jun 30, 2026 T. ROWE PRICE INDEX TRUST, INC., not summed	1,046	0.01%	—	Jun 30, 2026	T. ROWE PRICE INDEX TRUST, INC., not summed
46	Coffin Melinda Marie Insider CIK 1956983 · Sep 1, 2026 Director, issuer-wide	5,644	0.07%	+34	Sep 1, 2026	Director, issuer-wide
47	RHUMBLINE ADVISERS 13F CIK 1115418 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,355	0.07%	+5,355	Jun 30, 2026	carried, not yet filed for the newest quarter
48	NORRIS PERNE & FRENCH LLP/MI 13F CIK 1092290 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,151	0.07%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
49	LVIP State Street Small-Cap Index Fund Fund S000015974 · Registered fund · Jun 30, 2026 LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed	5,100	0.07%	—	Jun 30, 2026	LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed
50	CITIGROUP INC 13F CIK 831001 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	4,992	0.07%	-298	Jun 30, 2026	carried, not yet filed for the newest quarter

4 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 119 holders

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Key facts CIK 842517 CUSIP 464214105 13F (30d) 3 filings 3 filers Visit website Investor relations