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Mainsail Partners

Growth equity

Austin · Growth · 107 people tracked

Also known as MAINSAIL MANAGEMENT COMPANY, LLC

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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 Sep 29, 2026.

Stage
Growth
Check
$10M – $75M
HQ
Austin, US
Instruments
Equity
Founded
2015
Last 12 months
2 investments
AUM
$4B
Tracked investments
65
IPOs
1

Team · 107 people

from the firm's website & curated & public directories
Anthony Hayes· Partnerin
Phil Stern· Partner
Taylor McKinley· Partner
William Salisbury· Partner, CFO, CCOin
Andrea McNees· Senior Manager, GTM Strategy & Operations
Ania Frankel· Senior Director, Internal Operationsin
Bill Simpson· CTO-in-Residence
Bryan Shulte· Data and AI Architect
Chrissy Pascali· Growth Managerin
Cleo Nguyen· Deputy Chief Compliance Officerin
Collin Riccitelli· Senior Associate
David Lipka· Associate
Douglas Smith· Growth Manager
Duke Skarda· CTO-in-Residence
Elizabeth Harkness· Vice President, People
Erin Sedloff· Chief Legal Officerin
Garret Jackson· Vice Presidentin
Gerrit Jansen van Vuuren· AI Software Engineer
Hannah Yerex· Senior Associate
Henry Prentice· Senior Associate
Jaclyn Zalesky· Senior Growth Manager
Jake Libenson· Associate
James Moore· Growth Manager
Jemma Sellem· Executive Assistantin
Justin Lontok· Fund Accountantin
Justin Streicher· Associatein
Kennedy Kindred· Administrative Assistant
Lindsey Klaff· Chief of Staffin
Marie Henneburg· Director, Operations and Investor Relations
Marie St. Claire· Talent Directorin
Michael McEuen· Senior Director, Demand Generation
Owen Rupp· Associatein
Paul Meyer· Vice Presidentin
Prescott Nasser· CTO-in-Residence
Raymond Reyes· Associate
Richie Hrncir· Associatein
Sarita Ray· Senior Marketing Manager
Sebastian Lapcevic· AI Software Engineer
Sunny Prasla· Manager, FP&A
Tara Zahiri· Vice Presidentin
Teresa Zimmerman· Vice President, Marketing
Vincent Stevens· Senior IT and Security Engineer
Zara Martin· Director of Administration
Adam Till· Directorin

Founder mafia

3 people who came through Mainsail Partners went on to found or lead other companies.

What they invest in

from 30 of 65 portfolio companies

SaaS ×24Enterprise Software ×18AI & Machine Learning ×8Fintech ×8Logistics & Supply Chain ×4PropTech ×4E-commerce ×3HR Tech ×3

HQs:United States×19United Kingdom×1India×1Singapore×1

Who they back

founder profiles across 14 portfolio companies
86%
solo founders
12 of 14 mapped founding teams
~6 yrs
old at investment
median across 8 dated deals

Founding team size:solo founder×122 founders×2

Investments · 65 tracked

founders shown can be your intro path

By year:2025 · 32024 · 52022 · 32021 · 52019 · 12016 · 12015 · 12014 · 120 dated

Brilliant Earthbrilliantearth.comin𝕏NASDAQ: BRLT

Brilliant 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)inEric Grossberg(Co-Founder)

Co-investorsRunway Growth Capital

Smartmovingsmartmoving.comin𝕏✓ verified

SmartMoving provides software and operational guidance for moving companies, offering sales automation, dispatch management, customer experience tools, and financial management solutions.

Enterprise SoftwareLogistics & Supply ChainSaaSDallas, US

3PL Central3plcentral.com𝕏Apr 2021 · $45M

Extensiv (3plcentral.com) provides a cloud warehouse management system (WMS) for third-party logistics (3PL) providers, with tools for inventory tracking, fulfillment automation, labor analytics, and multi-location network management.

Logistics & Supply ChainSaaS

Co-investorsGrowth Street Partners

Apptegaapptega.comin𝕏Apr 2024 · $15M

Provides cybersecurity compliance software that unifies security processes, tracking, and reporting across multiple frameworks.

Atlanta, US

Jacob Ferro(Director)

BoardMike Dowdle(Director)inArmistead Whitney(Executive Officer, Director)in

Co-investorsCircadian VenturesGRA VentureGray Ventures

Aspireaspireapp.comin𝕏Jun 2021 · $200M

Aspire provides corporate account and card solutions for businesses with complex operations, offering relationship management and an online platform for employee spending oversight.

Enterprise SoftwareFintechSaaSSingapore, SG

Andrea Baronchelli(Founder/CEO)inGiovanni Casinelli(Founder)inGiacomo Ficari(Co-Founder (former Co-CEO))inJoel Leong(Co-Founder & Chief Strategy Officer)inSG Andrea Baronchelli(Founder/CEO)Stefano Pellegrino(Co-Founder (former Vietnam country head))in

Co-investorsBeacon VCCrane Venture PartnersHummingbird VenturesInsignia Ventures PartnersLightspeed Venture PartnersPICUS CAPITAL+26 more

Aspireletsaspire.ininJun 2021 · $200M

Aspire offers short-term personal loans of up to ₹5,00,000 repaid in weekly instalments over a tenure of up to 25 weeks, with reducing-balance interest.

FintechBengaluru, IN

Manoj Kumar Rathi(Co-Founder)inTushar Viswanath Garimalla(Co-Founder)in

Co-investorsPICUS CAPITALUpsparks CapitalCapital-AFasanara CapitalHummingbird VenturesLGT Capital Partners+3 more

Aspireaspire.ioinJun 2021 · $200M

Aspire is an influencer marketing platform that helps brands build communities of ambassadors, influencers, and affiliates to promote products at scale.

Creator EconomyE-commerceMarketing TechSaaS

Thomas Frostin

Co-investors515 VenturesAspenwoodCota CapitalPear VCStructural CapitalBattery Ventures+14 more

Boostlingoboostlingo.comin𝕏Aug 2021

Boostlingo is an all-in-one language services platform that combines human interpreters and AI to provide interpreting, translation, and multilingual event support, including video remote interpreting, over-the-phone interpreting, and AI-generated captions.

AI & Machine LearningEnterprise SoftwareSaaS

Bryan Forrester(Co-founder)in

Chirohdin

Marietta, US

Matt Kibikas(Director)Gabriel Doty(Executive Officer, Director)Jason Helfrich(Director)Luke Doty(Executive Officer, Director)McPherson Moore(Director)

Courtreservecourtreserve.comin

CourtReserve provides a league management platform for pickleball players and organizers, automating registration, scheduling, and results tracking.

B2B MarketplacesEnterprise SoftwarePropTechSaaSSports Tech

Tim Owens(Co-Founder / CEO)in

Extensivextensiv.comin𝕏

Extensiv provides software for omnichannel fulfillment, enabling brands and third-party logistics (3PL) providers to coordinate warehouse operations and order management.

E-commerceEnterprise SoftwareLogistics & Supply ChainSaaS

Co-investorsFJ LabsRunway Growth Capital

Fexafexa.ioin𝕏Jul 2022 · $40M

Fexa provides facilities management software for businesses with multiple locations, enabling teams to oversee properties, staff, operations, and compliance across their portfolio.

AI & Machine LearningEnterprise SoftwarePropTechSaaS

Marc Balzamo(Founder)in

Fieldflofieldflo.comin

FieldFlo is a field service management platform for construction and trades businesses that centralizes scheduling, time tracking, documentation, inventory, safety, and invoicing in a single dashboard.

Construction TechEnterprise SoftwareSaaS

Flight Schedule Proflightschedulepro.comin𝕏Mar 2024

Flight Schedule Pro is a scheduling and management platform for aviation schools and flight training operations.

EdTechEnterprise SoftwareSaaS

Jasen Barnes(Founder)in

FlyntlokinOct 2025 · $36M

Anchorage, US

Sean McLaughlin(Chief Executive Officer, President, Treasurer)inDavid Hoffman(Vice President and Secretary)

BoardSteven Murray(Director)Laura McLaughlin(Director)

Fullbayfullbay.comin𝕏Jul 2024 · $23M

Fullbay is cloud-based management software for heavy-duty truck, trailer, and diesel repair shops, covering repair tracking, labor and clock management, parts inventory, invoicing, and electronic payments.

Logistics & Supply ChainMobility & TransportationSaaS

Trent Brobergin

Co-investorsJMI Equity

Innergyinnergy.comin

INNERGY is a cloud-based ERP software designed specifically for woodworking businesses, built by people with extensive woodworking industry experience.

Advanced ManufacturingEnterprise SoftwareSaaS

Inspect Pointinspectpoint.cominJan 2022 · $28M

Inspect Point provides a software platform designed specifically for fire and life safety contractors to manage inspections, compliance workflows, service delivery, and customer relationships in a single system.

AI & Machine LearningEnterprise SoftwareSaaS

Jennifer Doyle(Founder)in

Instinct ScienceinNov 2022

Furlong, US

Caleb Solomon Frankel(Executive Officer, Director, Promoter)

Linenmasterlinenmaster.comin

LinenMaster Payments is an electronic payment collection platform that allows businesses to bill customers and receive revenue faster while reducing administrative overhead.

Enterprise SoftwareFintechSaaS

Mirrorwebmirrorweb.comin

MirrorWeb provides digital communications oversight and compliance solutions for regulated industries.

AI & Machine LearningCybersecurityEnterprise SoftwareFintechGovTechLegalTechManchester, GB

Philip Clegg(CTO and co-founder)in

Co-investorsMaven Capital Partners

Ncontractsncontracts.comin𝕏

Ncontracts provides risk management and compliance software for financial organizations, combining AI-powered tools with expertise from former regulators and compliance professionals.

AI & Machine LearningEnterprise SoftwareFintechLegalTech

Michael Berman(Founder)in

Co-investorsGrowth Street PartnersGryphon

Ncourtncourt.com𝕏

Catalis (formerly nCourt) provides government technology and SaaS solutions for courts, tax and property assessment, payments, permitting, and citizen engagement, serving state and local government agencies across North America.

FintechGovTechSaaSAlpharetta, US

Co-investorsGrowth Street Partners

Netchemiapeopleadmin.comin𝕏

PeopleAdmin provides a cloud-based software platform designed to manage institutional processes for higher education institutions, including talent management, academic affairs, and student outcomes analytics.

Cloud ComputingEdTechEnterprise SoftwareHR TechSaaS

Co-investorsGrowth Street Partners

Payleasepaylease.com

PayLease (rebranded to Zego in 2020) provides a property management automation platform for payments, utility management, and resident engagement.

FintechPropTechSaaS

Ty Kalklosch(Founder)inNate Taylorin

Co-investorsFrancisco PartnersGrowth Street Partners

Perahealthperahealth.comin𝕏

PeraHealth offers the Rothman Index, an FDA-cleared AI predictive analytics system that extracts and analyzes clinical measurements from the EMR to detect patient deterioration early and produce an aggregated score of a patient's physiological condition.

AI & Machine LearningDigital HealthHealthtech

Co-investorsKeiretsu Forum

Planhubplanhub.comin

PlanHub is a digital preconstruction platform that connects contractors and streamlines bidding, takeoff, estimation, and project management workflows.

B2B MarketplacesConstruction TechSaaS

Ro Bhatia(Chief Executive Officer)in

RentvineinAug 2024 · $74M

Estero, US

David J Borden(Executive Officer, Director, Promoter)inJames C Carter(Executive Officer, Director, Promoter)Jonathan R Ewen(Executive Officer, Director, Promoter)

Resmanmyresman.comin𝕏

ResMan provides software for property management companies to streamline operations, increase net operating income, and support business growth.

Enterprise SoftwarePropTechSaaS

ServicecoreinAug 2019

Lakewood, US

Ori Staub(President and Chief Technology Officer)inJohn Gadeken(President, Chief Operating Officer and Secretary)inJessica Davis(Director)

BoardErick Tonkyn(Director)Elodie Dupuy(Director)in

Co-investorsFull In Partners

Skimmergetskimmer.comin𝕏Oct 2024 · $74M

Skimmer is an all-in-one pool service management platform with web and mobile apps for scheduling technicians, optimizing service routes, billing, customer management, and automated service report emails.

SaaSAustin, US

Peter Freeland(Executive Officer, Director)Shane Skiffington(Director)Roger Kafker(Director)Jack Nelson(Executive Officer, Director)

Sourcescrubsourcescrub.comin𝕏

Sourcescrub provides a data and machine learning platform for investment sourcing and deal flow in private markets, helping dealmakers identify, screen, and prioritize acquisition or investment targets.

AI & Machine LearningData & InfrastructureFintechSaaSSan Francisco, US

TylerPrescott

Co-investorsFrancisco Partners

Steelhead Technologiesgosteelhead.cominDec 2025

Steelhead provides production visibility and management software for manufacturing operations, enabling real-time tracking of parts, profitability, productivity, and quality through operator workboards and granular production data.

Advanced ManufacturingEnterprise SoftwareSaaSCalumet, US

Jeffrey Halonen(Executive Officer, Director)

BoardJustin Moore(Director)inJay Po(Director)Brent Halonen(Director)

Co-investorsInnovius CapitalStage 2 CapitalTIA VenturesC2 VenturesStage Capital

Syncrorunsyncro.comDefunct

Syncro provides software that analyzes internal communications and organizational culture for insights about workplace dynamics and employee engagement.

Enterprise SoftwareHR TechSan Francisco, US

Brian Chan(Founder)

Co-investorsimec.istartY Combinator

Syncrosyncrosecure.comin𝕏

Syncro is a technology platform designed for IT professionals and managed service providers (MSPs) that combines automation, security operations, and AI capabilities to help IT teams bridge the skills gap and improve operational efficiency.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSaaS

Michael George(Chief Executive Officer)inKristen Costagliola(Chief Technology Officer)inChad Lindsey(Chief Revenue Officer)inNicole DeBourg-Kahn(Chief People Officer)inCarl Koussan-Price(Chief Marketing Officer)inDee Zepf(Chief Product Officer)in

Zen Plannerzenplanner.comin𝕏

Zen Planner provides all-in-one business management software for fitness studios and gyms, featuring membership management, class scheduling, payment processing, and member communication tools.

Future of WorkHealthtechHR TechSaaSSports TechWellness & Fitness

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Mint Aggregator LPNexus Systems HoldingsBio OptronicsCash Management SolutionsCenterbaseEsecuritelFairwarningFieldroutesForensic LogicFusionGtreasuryInn FlowIps LearningJobnimbusLivM A Com Technology Solutions IpoNexus SystemsNovus BiologicalsPath LogicPlaymaker HealthProfessional HealthcareProshopRed Oak Compliance SolutionsSentryoneSteelwedge SoftwareTeamfrontThe Bar MethodTogos

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.

Exits · 1

1 IPOs

Brilliant EarthNASDAQ: BRLT

Portfolio news

latest coverage across their companies

Frequently asked questions

How many investments has Mainsail Partners made?
Mainsail Partners has 65 tracked investments, 1 of which have exited, including 4 dated in the last 24 months.
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.
Does Mainsail Partners lead rounds?
Mainsail Partners has led 3 of the 14 rounds where its role is on record.
Who does Mainsail Partners co-invest with?
Mainsail Partners most often shares deals with Growth Street Partners, Francisco Partners, Runway Growth Capital, among 18 tracked co-investors.

Media · Podcasts & interviews

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