67 institutions reported holding $62.1M of ISABELLA BK CORP (ISBA) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($18.5M), VANGUARD GROUP INC ($15.6M), GEODE CAPITAL MANAGEMENT, LLC ($7.0M), STATE STREET CORP ($3.4M), NORTHERN TRUST CORP ($2.1M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30