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Mainsail Partners Investment Portfolio

Mainsail Partners is a US-based growth equity firm headquartered in Austin, Texas that invests primarily in B2B software and internet companies. The firm provides growth capital and operational support to scaling, founder-led businesses, with a focus on capital-efficient, profitable software companies.

Companies Invested In

Company Name
Sector
Investment Round Value
Funding Round
Announcement Date
PC:COURTCourtReserve
Enterprise Software, AI & Data Platforms
$54.00M
Growth Round
Oct 21, 2025
PC:FIE4AFieldFlo
Enterprise Software, AI & Data Platforms
$35.00M
Growth Round
Oct 24, 2025
PC:FLYNTFlyntlok
Enterprise Software, AI & Data Platforms
$36.00M
Growth Round
Oct 09, 2025
PC:STEELSteelhead Technologies
Enterprise Software, AI & Data Platforms
$84.00M
Growth Round
Dec 11, 2025