Mainsail Partners
Growth equityAustin · Growth · 95 people tracked
Also known as MAINSAIL MANAGEMENT COMPANY, LLC
Investment thesis
Mainsail Partners focuses on growth equity investments in B2B software and AI-enabled businesses, particularly companies that have been bootstrapped by their founders. The firm positions itself as a hands-on partner helping these companies scale into vertical market leaders, emphasizing operational support and long-term collaboration with founding teams.
Source: firm website, verified Aug 3, 2026.
Team · 95 people
from the firm's websiteWhat they invest in
from 4 of 61 portfolio companiesEnterprise Software ×3SaaS ×3E-commerce ×2Construction Tech ×1Consumer ×1Direct to Consumer ×1Future of Work ×1Impact & Social Good ×1
HQs:United States×11
Investments · 61 tracked
founders shown can be your intro pathBrilliant Earth is an online jewelry retailer focused on sourcing and selling ethically-produced gemstones and precious metals.
ConsumerDirect to ConsumerE-commerceImpact & Social GoodSan Francisco, US
Beth Gerstein(Co-Founder & CEO)Eric Grossberg(Co-Founder)
New York, US
BoardLouis Kinsella(Director)Bill Salisbury(Director)Renaat Ver Eecke(Director)David Issott(Director)Rebecca Yu(Director)
Board seatVinay Kashyap· per SEC Form D · filed Feb 2025
Falls Church, US
Jennifer Coolidge(Executive Officer, Director)Gavin Turner(Director)Vinay Kashyap(Director)Thomas L. Coolidge(Executive Officer, Director)
Board seatVinay KashyapGavin Turner· per SEC Form D · $27.9M raise · filed Oct 2016
Provides cybersecurity compliance software that unifies security processes, tracking, and reporting across multiple frameworks.
Atlanta, US
Jacob Ferro(Director)Mike Dowdle(Director)Armistead Whitney(Executive Officer, Director)
Marietta, US
Matt Kibikas(Director)Gabriel Doty(Executive Officer, Director)Jason Helfrich(Director)Luke Doty(Executive Officer, Director)McPherson Moore(Director)
ServiceTitan provides software to home and commercial services contractors (plumbers, electricians, HVAC, etc.) to manage their operations, customer relationships, and business growth.
Construction TechEnterprise SoftwareFuture of WorkSaaS
Ara(Co-founder)Vahe(Co-founder)Vahe Kuzoyan(Executive Officer, Director)William Hsu(Director)Michael Brown(Director)Byron Deeter(Director)
Anchorage, US
Laura McLaughlin(Director)Steven Murray(Director)Sean McLaughlin(Chief Executive Officer, President, Treasurer)David Hoffman(Vice President and Secretary)
Estero, US
David J Borden(Executive Officer, Director, Promoter)James C Carter(Executive Officer, Director, Promoter)Jonathan R Ewen(Executive Officer, Director, Promoter)
Lakewood, US
Erick Tonkyn(Director)Elodie Dupuy(Director)Ori Staub(President and Chief Technology Officer)John Gadeken(President, Chief Operating Officer and Secretary)Jessica Davis(Director)
Austin, US
Peter Freeland(Executive Officer, Director)Shane Skiffington(Director)Roger Kafker(Director)Jack Nelson(Executive Officer, Director)
Pleasanton, US
Pervinder Johar(Executive Officer, Director)David Hersh(Director)Gavin Turner(Director)Glen Margolis(Director)David Anderson(Director)Lisa Barbot(Executive Officer)
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Frequently asked questions
- What stage does Mainsail Partners invest at?
- Mainsail Partners invests at the Growth stage.
- What is Mainsail Partners's typical check size?
- Mainsail Partners typically writes checks of $10M – $75M.
- What sectors does Mainsail Partners focus on?
- Mainsail Partners focuses on AI & Machine Learning, Cybersecurity, Enterprise Software, Fintech, Healthtech, SaaS.
- Where is Mainsail Partners located?
- Mainsail Partners is headquartered in Austin, US.
Media · Podcasts & interviews
featuring the teamImages
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