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Greater Sum Ventures: Funding, Team & Investors | Startup Intros

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Greater Sum Ventures

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Updated: Apr 2, 2026 ·

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Quick Facts

Type: Investment Firm
Status: Active
HQ: Knoxville, TN, USA
IPO Status: Private

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Financial History

Total Raised

N/A

Valuation

N/A

Leadership Team

Key people at Greater Sum Ventures.

William Overstreet

Senior VP & Operating Partner

Managing Partner & Founder

Managing Director

Managing Partner & Founder

Managing Partner & Founder

Frequently Asked Questions

Who founded Greater Sum Ventures?

Greater Sum Ventures was founded by Bill Nix (Managing Partner & Founder) and Ross Croley (CEO & Founder) and Lisa Stinnett (Managing Partner & Founder) and Jon Ellison (Managing Partner & Founder).

Leadership Team

Key people at Greater Sum Ventures.

William Overstreet

Senior VP & Operating Partner

Managing Partner & Founder

Managing Director

Managing Partner & Founder

Managing Partner & Founder

Frequently Asked Questions

Who founded Greater Sum Ventures?

Greater Sum Ventures was founded by Bill Nix (Managing Partner & Founder) and Ross Croley (CEO & Founder) and Lisa Stinnett (Managing Partner & Founder) and Jon Ellison (Managing Partner & Founder).

Financial History

Total Raised

N/A

Valuation

N/A

Investments Made

Date	Company	Round	Lead Investor(s)	Co-Investor(s)
Mar 8, 2022	Stax	$245.0M Other Equity	—	Rob Wechsler, Ross Croley, HarbourVest Partners