Mainsail Partners

Mainsail Partners company information, Employees & Contact Information

Updated June 2026

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Mainsail Partners is a Venture Capital and Private Equity Principals company and founded in 2003. It has approximately 94 employees on record. Contact data was last refreshed in June 2026. Find Mainsail Partners's verified employee emails, phone numbers, headquarters address, and key decision makers below.

Mainsail Partners is a growth equity firm that invests in bootstrapped B2B software companies to help them realize their full potential. Our team is purpose-built to include experienced investors and software operators who help founders build great teams, develop industry-leading products, design data-driven and scalable infrastructure, and grow market share. Mainsail’s hands-on support and best practices are delivered with a collaborative approach that respects founder-led cultures and helps build on each company’s commitment to its people and customers. With offices in Austin and San Francisco, Mainsail Partners has raised nearly $4 billion in committed capital and partnered with 100+ companies over the last 22 years. For more information, visit www.mainsailpartners.com. Don’t miss the latest Mainsail News & SaaS Growth Insights: Subscribe at: https://mainsailpartners.com/subscribe/.

Company Details

Employees
94
Founded
2003
Address
500 W 5th St,
Phone
415.391.3150
Industry
Venture Capital And Private Equity Principals
NAICS
Miscellaneous Intermediation
Keywords
Estero.
HQ
Austin, Texas
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News

FieldFlo Secures $35 Million Growth Investment from Mainsail Partners - Mainsail Partners

FieldFlo Secures $35 Million Growth Investment from Mainsail Partners Mainsail Partners

CourtReserve Secures a $54 Million Growth Investment from Mainsail Partners - Mainsail Partners

CourtReserve Secures a $54 Million Growth Investment from Mainsail Partners Mainsail Partners

Flyntlok Secures $36 Million Growth Investment from Mainsail Partners to Bring AI & Innovation to Heavy Equipment Dealers - Mainsail Partners

Flyntlok Secures $36 Million Growth Investment from Mainsail Partners to Bring AI & Innovation to Heavy Equipment Dealers Mainsail Partners

Mainsail Partners Announces Eight Internal Promotions - Mainsail Partners

Mainsail Partners Announces Eight Internal Promotions Mainsail Partners

Mainsail Partners Announces Three Internal Promotions - Mainsail Partners

Mainsail Partners Announces Three Internal Promotions Mainsail Partners

Mainsail Partners Raises $1.535 Billion Fund VII for Software Investments - Mainsail Partners

Mainsail Partners Raises $1.535 Billion Fund VII for Software Investments Mainsail Partners

Life Safety Inspection Vault (LIV) Raises $28.7M from Mainsail Partners - Mainsail Partners

Life Safety Inspection Vault (LIV) Raises $28.7M from Mainsail Partners Mainsail Partners

Inn-Flow Secures $45 Million Growth Investment from Mainsail Partners - Mainsail Partners

Inn-Flow Secures $45 Million Growth Investment from Mainsail Partners Mainsail Partners

Sumeru Equity Partners Invests $330 Million in JobNimbus - Mainsail Partners

Sumeru Equity Partners Invests $330 Million in JobNimbus Mainsail Partners

Growth Equity Firm for Bootstrapped Software Companies - Mainsail Partners - Mainsail Partners

Growth Equity Firm for Bootstrapped Software Companies - Mainsail Partners Mainsail Partners

Mainsail Partners Named in Inc.’s 2021 List of Founder-Friendly Investors - Mainsail Partners

Mainsail Partners Named in Inc.’s 2021 List of Founder-Friendly Investors Mainsail Partners

Fexa Announces $40 Million Investment from Mainsail Partners - Mainsail Partners

Fexa Announces $40 Million Investment from Mainsail Partners Mainsail Partners

Mainsail Partners Announces Key Leadership Hires, Internal Promotions - Mainsail Partners

Mainsail Partners Announces Key Leadership Hires, Internal Promotions Mainsail Partners

Skimmer Receives Growth Investment from Mainsail Partners - Mainsail Partners

Skimmer Receives Growth Investment from Mainsail Partners Mainsail Partners

Fullbay Announces Strategic Growth Investment from JMI Equity and Reinvestment from Mainsail Partners - Mainsail Partners

Fullbay Announces Strategic Growth Investment from JMI Equity and Reinvestment from Mainsail Partners Mainsail Partners

Mainsail Partners Invests in PlayMaker CRM - Mainsail Partners

Mainsail Partners Invests in PlayMaker CRM Mainsail Partners

Jess Bicknell - Vice President, Customer Experience - Mainsail Partners

Jess Bicknell - Vice President, Customer Experience Mainsail Partners

ProShop ERP Receives $32 Million Growth Investment from Mainsail Partners - Mainsail Partners

ProShop ERP Receives $32 Million Growth Investment from Mainsail Partners Mainsail Partners

INNERGY Receives $44M Growth Investment from Mainsail Partners - Mainsail Partners

INNERGY Receives $44M Growth Investment from Mainsail Partners Mainsail Partners

LinenMaster Receives Growth Investment from Mainsail Partners and Welcomes New CEO - Mainsail Partners

LinenMaster Receives Growth Investment from Mainsail Partners and Welcomes New CEO Mainsail Partners

Mainsail Partners Expands Operations Team and Announces Four Promotions - Mainsail Partners

Mainsail Partners Expands Operations Team and Announces Four Promotions Mainsail Partners

Best Private Equity Firm for Software Company Founders - Mainsail Partners

Best Private Equity Firm for Software Company Founders Mainsail Partners

Meg Heinz - Vice President, Revenue Operations - Mainsail Partners

Meg Heinz - Vice President, Revenue Operations Mainsail Partners

Mainsail Partners Announces the Promotions of David Farsai and Jason Frankel to Partner - Mainsail Partners

Mainsail Partners Announces the Promotions of David Farsai and Jason Frankel to Partner Mainsail Partners

Instinct Announces Growth Equity Investment from Mainsail Partners - Mainsail Partners

Instinct Announces Growth Equity Investment from Mainsail Partners Mainsail Partners

Instinct Science Acquires VetMedux - Mainsail Partners

Instinct Science Acquires VetMedux Mainsail Partners

Mainsail Partners Expands Footprint with New Office in Austin, Texas - Mainsail Partners

Mainsail Partners Expands Footprint with New Office in Austin, Texas Mainsail Partners

Mainsail Partners Announces the Sale of Nexus Systems to Bottomline - Mainsail Partners

Mainsail Partners Announces the Sale of Nexus Systems to Bottomline Mainsail Partners

Mainsail Partners Sells Ncontracts - Mainsail Partners

Mainsail Partners Sells Ncontracts Mainsail Partners

Centerbase Receives Growth Equity Investment from Mainsail Partners - Mainsail Partners

Centerbase Receives Growth Equity Investment from Mainsail Partners Mainsail Partners

Mainsail Partners Expands Leadership Team - Mainsail Partners

Mainsail Partners Expands Leadership Team Mainsail Partners

Mainsail Raises Fourth Fund - Mainsail Partners

Mainsail Raises Fourth Fund Mainsail Partners

JobNimbus Receives $53 Million Investment from Mainsail Partners - Mainsail Partners

JobNimbus Receives $53 Million Investment from Mainsail Partners Mainsail Partners

Mainsail Partners Announces Transition of ResMan into Inhabit IQ Portfolio - Mainsail Partners

Mainsail Partners Announces Transition of ResMan into Inhabit IQ Portfolio Mainsail Partners

Fullbay Announces $23M Growth Investment from Mainsail Partners - Mainsail Partners

Fullbay Announces $23M Growth Investment from Mainsail Partners Mainsail Partners

Mainsail Partners Hires Bill Salisbury as New CFO - Mainsail Partners

Mainsail Partners Hires Bill Salisbury as New CFO Mainsail Partners

FieldRoutes Signs Agreement to be Acquired by ServiceTitan - Mainsail Partners

FieldRoutes Signs Agreement to be Acquired by ServiceTitan Mainsail Partners

MirrorWeb Raises $63M of Growth Capital from Mainsail Partners - PRWeb

MirrorWeb Raises $63M of Growth Capital from Mainsail Partners PRWeb

Rentvine Raises $74M of Growth Capital from Mainsail Partners - PRWeb

Rentvine Raises $74M of Growth Capital from Mainsail Partners PRWeb

PayLease Names Dave Dutch as New CEO - Mainsail Partners

PayLease Names Dave Dutch as New CEO Mainsail Partners

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