Samuel Keller
Founder & Managing Director
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- Full Name
- Samuel (Sam) Keller
- Title
- Founder & Managing Partner (also cited as Managing Director)
- Firm
- 300 Equity Group (also styled "300 Equity LLC")
- Firm Type
- Boutique technology-focused investment bank / M&A advisory. *Note: the supplied stub labeled the firm "Angel Investors / Seed Round," but all available public sources describe 300 Equity Group as a sell-side M&A and capital-raising advisory firm, not an angel/seed investment vehicle. This appears to be a mis-classification in the source data.*
- Investment Stage
- N/A as an angel; as an advisor, the firm works with established, revenue-generating technology companies (sell-side M&A and growth capital raising)
- Target Company Profile
- Technology companies with roughly $1M–$100M in annual revenue
- Sector Focus
- Technology — software / SaaS, data and analytics (e.g., financial-services software, semantic/data-quality software)
- Geographic Focus
- United States
- Location
- Chicago, Illinois
Background
Samuel "Sam" Keller is the founder and managing partner of 300 Equity Group, a Chicago-based investment bank he established in 2016 to provide merger-and-acquisition and capital-fundraising advisory services to technology companies. The firm positions itself as a boutique alternative to larger investment banks, focused on mid-market and lower-middle-market tech businesses generally in the $1M–$100M revenue range, where it acts as an exclusive sell-side advisor guiding owners through preparation, buyer outreach, negotiation, and due diligence to close.
Keller holds a Bachelor of Science in Economics from Northern Illinois University (2004–2007). Prior to founding 300 Equity Group, his career spanned roles at Ennis Knupp & Associates — a well-known Chicago-based institutional investment-consulting firm — as well as Rapidemand Corp. and an analyst position, giving him a background that public profiles associate with financial modeling, due diligence, investments, asset management, and private equity.
In practice, Keller's public track record is that of a hands-on M&A advisor to founder-owned technology companies rather than a check-writing angel investor. Clients have praised his thoroughness and buyer network; the former CEO of one client company noted he "did a great job helping us navigate the sell-side process" and delivered service "comparable to larger investment banking firms."
Investment Thesis & Focus
- Advises technology companies with ~$1M–$100M in annual revenue, primarily on sell-side M&A and capital fundraising.
- Focus on software / SaaS and data-driven businesses (financial-services software, healthcare/precision-medicine data, semantic technology).
- Value proposition: boutique, high-touch execution — deep preparation, buyer sourcing, and negotiation typically associated with larger banks, tailored to smaller companies.
- *Caveat:* No verifiable evidence of an angel/seed personal investing program, check sizes, or a direct-investment thesis was found in public sources. Treat the "Angel / Seed" framing in the stub as unconfirmed.
Notable Investments
- Firm58 → ESW Capital (2018): 300 Equity Group served as exclusive financial advisor to Firm58, a SaaS financial-management software company serving capital markets, in its sale to ESW Capital.
- IO Informatics → Melissa Data (2018): 300 Equity Group served as exclusive financial advisor to IO Informatics, a semantic-technology and precision-medicine data software company, in its acquisition by Melissa Data Corp. (Los Angeles).
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