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SEC registrant · CIK 0000842517

ISABELLA BANK CORP (ISBA)

ISABELLA BANK CORP (CIK 0000842517, ticker ISBA, EIN 38-2830092) reported revenue of $5.66 million ($5,655,000) for FY2018 (2018-01-01 to 2018-12-31) and net income of $18.91 million ($18,910,000) for FY2025 (2025-01-01 to 2025-12-31), as filed in its 10-K filed 2019-03-14 (accession 0000842517-19-000052) and its 10-K filed 2026-03-13 (accession 0000842517-26-000069).

Figures are as filed with the SEC in XBRL, in whole US dollars unless stated, for the company's own fiscal years (fiscal year ends December 31).

Data as of Oct 21, 2026 (Olympus publication) · Markdown version

  • Values are as filed by the company in its 10-K and 10-Q XBRL data. When a later filing restates a value, the latest filed value is shown and the first reported value is noted.

Identifiers

As published in the company's EDGAR submissions record.

IdentifierValue
CIK0000842517
TickersISBA (Nasdaq)
EIN38-2830092
SIC industry code6022 State Commercial Banks
State or country of incorporationMI
Fiscal year endDecember 31
Filer categoryAccelerated filer<br>Smaller reporting company
Entity typeoperating
Olympus entity IDorg_2jbjxx1zxh5s6dqy9hja1zk9nv
  • The EIN is the one the filer gave to EDGAR. The SEC does not verify it; Olympus checks only that it has nine digits and a prefix the IRS assigns.

Latest annual financial metrics

The latest annual value of each standardised metric, with the filing it was taken from.

MetricValueFiscal periodPeriodFormFiledAccession numberXBRL concept
Revenue$5,655,000FY20182018-01-01 to 2018-12-3110-K2019-03-140000842517-19-000052RevenueFromContractWithCustomerExcludingAssessedTax
Net income$18,910,000FY20252025-01-01 to 2025-12-3110-K2026-03-130000842517-26-000069NetIncomeLoss
Total assets$2,209,448,000FY2025as of 2025-12-3110-K2026-03-130000842517-26-000069Assets
Total liabilities$1,978,052,000FY2025as of 2025-12-3110-K2026-03-130000842517-26-000069Liabilities
Stockholders' equity$231,396,000FY2025as of 2025-12-3110-K2026-03-130000842517-26-000069StockholdersEquity
Operating cash flow$26,817,000FY20252025-01-01 to 2025-12-3110-K2026-03-130000842517-26-000069NetCashProvidedByUsedInOperatingActivities
Diluted earnings per share$2.56 per shareFY20252025-01-01 to 2025-12-3110-K2026-03-130000842517-26-000069EarningsPerShareDiluted
Shares outstanding7,330,036 sharesFY2025as of 2026-03-1210-K2026-03-130000842517-26-000069EntityCommonStockSharesOutstanding
  • Accession numbers link to the filing's index on SEC EDGAR.

Revenue and net income history

Every annual revenue and net income value served for fiscal years 2016-2025, newest first, each with its filing.

MetricFiscal periodPeriodValueFormFiledAccession number
RevenueFY20182018-01-01 to 2018-12-31$5,655,00010-K2019-03-140000842517-19-000052
RevenueFY20172017-01-01 to 2017-12-31$5,385,00010-K2019-03-140000842517-19-000052
RevenueFY20162016-01-01 to 2016-12-31$5,185,00010-K2019-03-140000842517-19-000052
Net incomeFY20252025-01-01 to 2025-12-31$18,910,00010-K2026-03-130000842517-26-000069
Net incomeFY20242024-01-01 to 2024-12-31$13,889,00010-K2026-03-130000842517-26-000069
Net incomeFY20232023-01-01 to 2023-12-31$18,167,00010-K2026-03-130000842517-26-000069
Net incomeFY20222022-01-01 to 2022-12-31$22,238,00010-K2025-03-120000842517-25-000053
Net incomeFY20212021-01-01 to 2021-12-31$19,499,00010-K2024-03-070000842517-24-000048
Net incomeFY20202020-01-01 to 2020-12-31$10,885,00010-K2023-03-070000842517-23-000055
Net incomeFY20192019-01-01 to 2019-12-31$13,024,00010-K2022-03-150000842517-22-000061
Net incomeFY20182018-01-01 to 2018-12-31$14,021,00010-K2021-03-100000842517-21-000069
Net incomeFY20172017-01-01 to 2017-12-31$13,237,00010-K2020-03-160000842517-20-000040
Net incomeFY20162016-01-01 to 2016-12-31$13,799,00010-K2019-03-140000842517-19-000052

Recent 10-K and 10-Q filings

The 12 most recent 10-K, 10-Q and amendment filings in EDGAR, newest first.

FormFiledPeriod of reportAccession numberDocument
10-Q2026-08-102026-06-300000842517-26-000180isba-20260630.htm
10-Q2026-05-062026-03-310000842517-26-000099isba-20260331.htm
10-K2026-03-132025-12-310000842517-26-000069isba-20251231.htm
10-Q2025-11-102025-09-300000842517-25-000210isba-20250930.htm
10-Q2025-08-112025-06-300000842517-25-000135isba-20250630.htm
10-Q2025-05-082025-03-310000842517-25-000099isba-20250331.htm
10-K2025-03-122024-12-310000842517-25-000053isba-20241231.htm
10-Q2024-11-142024-09-300000842517-24-000201isba-20240930.htm
10-Q2024-08-122024-06-300000842517-24-000146isba-20240630.htm
10-Q2024-05-022024-03-310000842517-24-000088isba-20240331.htm
10-K2024-03-072023-12-310000842517-24-000048isba-20231231.htm
10-Q2023-10-272023-09-300000842517-23-000186isba-20230930.htm

Identifier registry

The company's identifiers in the Olympus identifier registry, each with how it was linked and its source.

SchemeValueHow linkedSourcePublished
SEC Central Index Key (CIK) · OLY-US-SEC-CIK0000842517published by the sourcedata.sec.gov/submissions/CIK0000842517.json2026-10-21
Employer Identification Number (EIN) · US-EIN38-2830092published by the sourceaskebsa.dol.gov/FOIA%20Files/2024/Latest/F_5500_2024_Latest.zip2026-10-22
Employer Identification Number (EIN) · US-EIN38-2830092published by the sourcedata.sec.gov/submissions/CIK0000842517.json2026-10-21

Same entity in other Olympus APIs

Records other Olympus APIs serve for this entity, linked through a published identifier (never matched on name).

APIRecordAPI pathLinked through
US Employee Benefits & Form 5500 APIsponsor/v1/form-5500/sponsors/382830092US-EIN 382830092

Former names

NameFromTo
IBT BANCORP INC /MI/1995-11-132008-05-16

Sources

  • EDGAR submissions (nightly bulk archive) (company profile and filings) — U.S. Securities and Exchange Commission. EDGAR snapshot sha256:f7d2a4f18cb91aae, source date 2026-10-20. https://data.sec.gov/submissions/CIK0000842517.json
  • EDGAR XBRL company facts (nightly bulk archive) (financial metrics) — U.S. Securities and Exchange Commission. EDGAR snapshot sha256:01e4045aa34d7224, source date 2026-10-20. https://data.sec.gov/api/xbrl/companyfacts/CIK0000842517.json
  • Published by Olympus on Oct 21, 2026.
  • Source data: U.S. Securities and Exchange Commission (EDGAR). Values are as filed by the registrant; Olympus does not audit or adjust them.
  • Olympus is not affiliated with or endorsed by the U.S. Securities and Exchange Commission.

Get this data from the API

The same figures, with provenance on every value, from the API (free API key, reference) or from an AI agent through the Olympus MCP server.

curl
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curl -s "https://api.olympus.new-odyssey.com/v1/sec/companies/0000842517/financials" -H "X-API-Key: $OLYMPUS_API_KEY"

curl -s "https://api.olympus.new-odyssey.com/v1/sec/companies/0000842517/filings?limit=12" -H "X-API-Key: $OLYMPUS_API_KEY"
MCP tool call
get_sec_company_financials {"cik":"842517"}

On SEC EDGAR

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