Mainsail Partners
Mainsail Partners is a software-focused growth equity investment firm[1] that has offices in Austin, TX and San Francisco, CA[2][3].
History
Mainsail Partners was founded in 2003 by Gavin Turner and Jason Payne.[2] As of August 2025, the firm had made more than 100 platform and add-on investments[4] and it had raised seven flagship funds. The latest flagship fund was closed in May 2025 at its hard cap of $1.535 billion.[5][6]
Business Model
Mainsail Partners primarily invests in bootstrapped business-to-business (B2B) software and vertical SaaS companies.[2][7] As stated on the firm's website, the firm typically makes $10M to $75M equity investments in software companies in the United States or Canada that are founder-owned and growing. [8] In a 2024 profile of associate general counsel Erin Sedloff, Modern Counsel reported that Mainsail also provides operational assistance in areas including talent, sales, marketing, technology, legal, and finance, aiming to share common business practices and offer direct support to portfolio companies.[9] The firm also helps the companies it invests in incorporate AI into their products and improve customer success. [10]
References
- ↑ "Mainsail Backs Growth Investment in Pest-Control Software Company". Wall Street Journal. 2018-03-21. ISSN 0099-9660. Retrieved 2025-09-24.
- ↑ 2.0 2.1 2.2 "Mainsail Partners is raising a $1.4B growth equity fund to invest in startups". Austin Business Journal. 2025-03-25. Retrieved 2025-09-24.
- ↑ "Kirkland-Led Mainsail Wraps $1.53B Software-Focused Fund - Law360". www.law360.com. Retrieved 2025-09-24.
- ↑ "Mainsail Partners investment portfolio | PitchBook". pitchbook.com. Retrieved 2025-09-24.
- ↑ Dorbian, Iris (2025-05-07). "Mainsail Partners racks up $1.535bn for seventh fund". Buyouts. Retrieved 2025-09-24.
- ↑ "Mainsail Partners Raises $1.5B Fund VII". www.themiddlemarket.com. 2025-05-07. Retrieved 2025-09-24.
- ↑ "LIV secures $28.7 million in growth capital". 2025-08-12. Retrieved 2025-09-24.
- ↑ "List of the B2B Software Companies in Mainsail Partners' Portfolio". Mainsail Partners. Retrieved 2025-09-24.
- ↑ Giordano, Santiago (2024-02-29). "Erin Sedloff is Endlessly Empowering at Mainsail Partners". Modern Counsel. Retrieved 2025-09-24.
- ↑ "Atlanta maker of practice-management software for chiropractors lands $26 million investment". Atlanta Business Chronicle. 2025-04-30. Retrieved 2025-09-24.
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