What is Mainsail Partners's NAICS code?

Mainsail Partners's NAICS code is 52391 (Miscellaneous Intermediation).

Insights

Growth Equity Focus Mainsail Partners is a growth equity firm investing in bootstrapped B2B software and AI-enabled companies, indicating potential opportunities to connect with portfolio companies seeking scale, strategic guidance, and AI-driven product and go-to-market improvements.

AI Adoption Recent initiatives like Mainsail AI Labs and emphasis on AI to drive productivity and innovation suggest a readiness to engage with portfolio companies pursuing AI strategy, data infrastructure, and automation enhancements.

Portfolio Expansion Active deal activity, such as recent investments in Steelhead Technologies and FieldFlo, signals ongoing growth and potential cross-sell or up-sell opportunities across vertical SaaS segments and adjacent markets.

Legal and Governance Promotions to Partner and recognition of leadership (e.g., Erin Sedloff) indicate a stable, expanding leadership track; sales outreach could align with growth leadership needs, governance improvements, and strategic partnerships.

Operational Scale With capital raised nearing $4 billion and a client base of 100+ companies, there is a substantial pool of potential procurement, professional services, and enterprise-scale software needs to explore through tiered enterprise solutions and platform investments.

Mainsail Partners Tech Stack

Mainsail Partners uses 8 technology products and services including Optimizely, Amazon Web Services, CookieYes, and more. Explore Mainsail Partners's tech stack below.

Optimizely
A/B Testing
Amazon Web Services
Cloud Hosting
CookieYes
Cookie Compliance
OpenAI
Generative Ai
Google Cloud
Infrastructure As A Service
DocuSign
Miscellaneous
Notion
Page Builders
Vimeo
Video Players

Media & News

Mainsail Partners's Email Address Formats

Mainsail Partners uses at least 4 email formats:

Mainsail Partners Email Formats	Example	Percentage
First@mainsailpartners.com	John@mainsailpartners.com	69%
Last@mainsailpartners.com	Doe@mainsailpartners.com	18%
FLast@mainsailpartners.com	JDoe@mainsailpartners.com	12%
FirstL@mainsailpartners.com	JohnD@mainsailpartners.com	1%

Frequently Asked Questions

What is Mainsail Partners's phone number?

You can contact Mainsail Partners's main corporate office by phone at

+1-415-391-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Mainsail Partners's official website and social media links?

Mainsail Partners's official website is mainsailpartners.com and has social profiles on LinkedIn.

How much revenue does Mainsail Partners generate?

As of August 2026, Mainsail Partners's annual revenue is estimated to be $100M - $250M.

What is Mainsail Partners's SIC code and NAICS code?

Mainsail Partners's SIC code is 6371 - Pension, Health, and Welfare Funds and NAICS code is 52391 - Miscellaneous Intermediation.

How many employees does Mainsail Partners have currently?

As of August 2026, Mainsail Partners has approximately 106 employees across 2 continents, including North America and Asia. Key team members include Cto In Residence: R. B., Chief Financial Officer: R. W. and Vice President Of Pricing: B. R. Explore Mainsail Partners's employee directory with LeadIQ.

What industry does Mainsail Partners belong to?

Mainsail Partners operates in the Venture Capital and Private Equity Principals industry.

What technology does Mainsail Partners use?

Mainsail Partners's tech stack includes Optimizely, Amazon Web Services, CookieYes, OpenAI, Google Cloud, DocuSign, Notion and Vimeo.

What is Mainsail Partners's email format?

Mainsail Partners's email format typically follows the pattern of First@mainsailpartners.com. Find more Mainsail Partners email formats with LeadIQ.

When was Mainsail Partners founded?

Mainsail Partners was founded in 2003.

Mainsail Partners

Q: How many employees does Mainsail Partners have currently?

Mainsail Partners has approximately 106 employees.

Q: What technology does Mainsail Partners use?

Mainsail Partners's tech stack includes Yoast SEO, Slick, iCIMS, Microsoft 365, HSTS.

Venture Capital and Private Equity PrincipalsTexas, United States51-200 Employees

Mainsail Partners is a growth equity firm that concentrates on investing in bootstrapped B2B software companies to help them scale and achieve market leadership. The team combines experienced investors with software operators who assist founders in building strong teams, developing industry-leading products, and designing data-driven, scalable infrastructure to grow market share. Mainsail maintains offices in Austin, Texas, and San Francisco, California, and has raised nearly $4 billion in committed capital and partnered with more than 100 companies over the past 22 years. The firm emphasizes a collaborative approach that respects founder-led cultures and supports the people and customers of its portfolio companies. The organization has 51 to 200 employees and maintains an online presence at mainsailpartners.com.