Insights

Strategic Transition The MainSource Bank entity is aligned with First Financial Bank after a 2018 merger, indicating potential opportunities to engage with a broader First Financial customer base and leverage shared services, platforms, and cross-sell possibilities across the combined franchise.

Compliance and Wallet Strong emphasis on FDIC membership and Equal Housing Lender status signals compliance maturity and a stable consumer banking profile, suggesting opportunities for targeted credit products, mortgage services, and SBA-style lending aligned with regulated expansion.

Tech Footprint Active tech stack including Salesforce, Adobe Experience Cloud, Pardot, and BlackLine points to a data-driven, marketing-enabled organization ripe for partnering on fintech integrations, customer analytics, marketing automation, or enterprise-grade financial operations solutions.

Growth Momentum Recent news shows First Financial Bank expanding presence, pursuing acquisitions, and widening regional footprint, indicating a lucrative market expansion playbook that could be complemented with treasury services, commercial banking, and advisory offerings for growing markets.

Credit and CARE Revenue in the upper mid-market range and active community benefits initiatives suggest opportunities in CSR-aligned lending programs, CRA-focused partnerships, and community development financing that align with ESG and reinvestment goals.

MainSource Bank Tech Stack

MainSource Bank uses 8 technology products and services including Amazon Web Services, Docker, Adobe Experience Manager, and more. Explore MainSource Bank's tech stack below.

Media & News

MainSource Bank's Email Address Formats

MainSource Bank uses at least 2 format(s):
MainSource Bank Email FormatsExamplePercentage
First.Last@bankatfirst.comJohn.Doe@bankatfirst.com
94%
Last.First@bankatfirst.comDoe.John@bankatfirst.com
4%
FirstLast@bankatfirst.comJohnDoe@bankatfirst.com
1%
Last@bankatfirst.comDoe@bankatfirst.com
1%
FLast@mainsourcebank.comJDoe@mainsourcebank.com
96%
F.Last@mainsourcebank.comJ.Doe@mainsourcebank.com
2%
Last@mainsourcebank.comDoe@mainsourcebank.com
1%
First.Last@mainsourcebank.comJohn.Doe@mainsourcebank.com
1%

Frequently Asked Questions

What is MainSource Bank's phone number?

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You can contact MainSource Bank's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is MainSource Bank's official website and social media links?

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MainSource Bank's official website is bankatfirst.com and has social profiles on LinkedIn.

How much revenue does MainSource Bank generate?

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As of July 2026, MainSource Bank's annual revenue is estimated to be $100M - $250M.

What is MainSource Bank's NAICS code?

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MainSource Bank's NAICS code is 52211 - Commercial Banking.

How many employees does MainSource Bank have currently?

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As of July 2026, MainSource Bank has approximately 256 employees across 3 continents, including North AmericaAsiaEurope. Key team members include Co-Founder: W. C.Vice President: K. B.Director: N. W.. Explore MainSource Bank's employee directory with LeadIQ.

What industry does MainSource Bank belong to?

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MainSource Bank operates in the Banking industry.

What technology does MainSource Bank use?

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MainSource Bank's tech stack includes Amazon Web ServicesDockerAdobe Experience ManagerCrowdStrikeWorkdayMicrosoft Active DirectoryBoxWebex.

What is MainSource Bank's email format?

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MainSource Bank's email format typically follows the pattern of First.Last@bankatfirst.com. Find more MainSource Bank email formats with LeadIQ.
MainSource Bank logo

MainSource Bank

BankingOhio, United States201-500 Employees

MainSource Bank operates in the banking industry and is based in Cincinnati, Ohio. The institution has merged with First Financial Bank and as a result, it now operates under that brand, with the First Financial Bank entity continuing the relationship with customers; the original account referenced is noted as inactive. The broader organization is part of a regional network that has engaged in community-focused initiatives, including partnerships and programs under the First Financial banner, with activity spanning across multiple states. The company’s presence includes a strong consumer and small-business banking footprint, supported by its status as a member of the FDIC and equal housing lender, and its regional profile is reflected in ongoing developments and recognitions reported through early 2026. A notable recent development is the continued expansion of the First Financial Bank brand and its community engagement efforts, including collaborations and local partnerships within the Cincinnati area and beyond. } }</n> } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } ) } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } }

Section iconCompany Overview

Phone number
NAICS Code
52211 - Commercial Banking
Employees
201-500

Section iconFunding & Financials

  • $100M - $250M

    MainSource Bank's revenue is estimated to be in the range of $100M - $250M

Section iconFunding & Financials

  • $100M - $250M

    MainSource Bank's revenue is estimated to be in the range of $100M - $250M

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