Investors / Mainsail Partners
Mainsail Partners
Venture capital
Mainsail Partners is a growth equity firm that invests in B2B software and AI-enabled companies. It focuses on founder-led, bootstrapped companies and provides capital along with operational support in areas such as talent, product, sales, and AI.
Invests inEnterprise Software
In its own wordsb2b softwareaivertical softwarebootstrappedgrowth equityfounder-led
Your fit with Mainsail Partners
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsMainsail Partners lists 39 checked portfolio companies on its own site and is named in 4 funding rounds, 4 of them as lead. Its most frequent entry is Growth, 100% of the companies with a known first round. Its largest themes are Enterprise Software (22%), Fintech (15%) and Real Estate & Construction (10%). 100% of its companies are based in United States. It invests most often alongside ATDC, BITKRAFT Ventures and Battery Ventures.
Counts come from funding rounds that name Mainsail Partners, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not Mainsail Partners' whole history. Rounds on record name 4 companies; its own site lists 39. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundShow as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 0% |
| Series A | 0% |
| Series B | 0% |
| Growth | 100% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 0 | 0 |
| '25 | 4 | 4 |
| '26 | 0 | 0 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 77th | 39 companies |
| Recent activity | 59th | 1 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 72th | 8% of companies confirmed by a round |
| Sector focus | 25th | 22% in its largest sector |
| Reach | 20th | 1 country |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Enterprise Software | 22% | 8% |
| Fintech | 15% | 12% |
| Real Estate & Construction | 10% | 3% |
| Industrial & Manufacturing | 9% | 7% |
| Healthcare & Biotech | 8% | 15% |
| Legal & Compliance | 6% | 2% |
| E-commerce & Marketplaces | 6% | 6% |
| AI & Machine Learning | 6% | 18% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| ATDC | 1 |
| BITKRAFT Ventures | 1 |
| Battery Ventures | 1 |
| Bessemer Venture Partners | 1 |
| C2 Ventures | 1 |
| Causeway Media Partners | 1 |
| Circadian Ventures | 1 |
| Elysian Park Ventures | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers3795%
- No longer answers00%
- Points to another company25%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherCompare Mainsail Partners head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with Mainsail Partners| Date | Company | Stage |
|---|---|---|
| 11 Dec 2025 | Debt Led | |
| 24 Oct 2025 | Debt Led | |
| 21 Oct 2025 | Series C+ Led |
Round details for Mainsail Partners
Amounts, full round histories and every co-investor in Mainsail Partners' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
39 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Apptega provides GRC software for managed security service providers and other organizations | CybersecurityGaming | Portfolio page | ||
| The Bar Method offers a full-body barre workout that builds strength and transforms how you feel | Healthcare & Biotech | Portfolio page | ||
| Boostlingo helps businesses communicate across languages by integrating humans and AI to make language access simple, fast, and reliable. | EducationHealthcare & Biotech | Portfolio page | ||
| Centerbase provides a platform for law firms to manage their business operations, including billing, accounting, and reporting | Legal & Compliance | Portfolio page | ||
| ChiroHD provides practice management and electronic health record software for chiropractic practices | Healthcare & Biotech | Portfolio page | ||
| CourtReserve provides software for managing tennis and pickleball clubs | Legal & ComplianceEnterprise Software | Oct 2025Series C+ | Page + round | |
| Fexa provides facility management software that helps teams manage repairs, vendors, assets, spend, and compliance across every location | Real Estate & ConstructionEnterprise Software | Portfolio page | ||
| FieldFlo provides software for demolition, asbestos abatement, and environmental remediation contractors | Industrial & ManufacturingEnterprise Software | Oct 2025Debt | Page + round | |
| FieldRoutes provides field service management software to help companies simplify, scale, and grow their business. | Enterprise SoftwareSpace & Defense | Portfolio page | ||
| Flight Schedule Pro provides flight operations software for flight schools, career pilot training centers, universities, and other flying organizations. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Fullbay provides software for heavy-duty truck and trailer repair shops to manage their workflow, estimates, invoicing, and inventory | Industrial & ManufacturingEnterprise Software | Portfolio page | ||
| Fusion powers a better mortgage experience with its lending technology | Fintech | Portfolio page | ||
| Skimmer provides software for pool service companies to manage routing, billing, and scheduling | Enterprise SoftwareE-commerce & Marketplaces | Portfolio page | ||
| Steelhead Technologies develops and provides manufacturing process management software | Industrial & ManufacturingEnterprise Software | Dec 2025Debt | Page + round | |
| Portfolio page | ||||
| Innergy provides software for woodworkers and custom woodworking businesses, including ERP and CAD/CAM tools. | Industrial & ManufacturingEnterprise Software | Portfolio page | ||
| Inspect Point provides fire inspection software for contractors | Enterprise SoftwareAI & Machine Learning | Portfolio page | ||
| JobNimbus provides business software for contractors, including roofing, siding, gutters, and fencing companies. | EducationReal Estate & Construction | Portfolio page | ||
| LinenMaster offers operational software designed to help commercial laundry providers run their businesses smoothly and efficiently | Industrial & Manufacturing | Portfolio page | ||
| LIV provides a solution for recording, streaming, and sharing videos from XR applications | Enterprise SoftwareGaming | Portfolio page |
About this data
site last read 8 Nov 2026- Site
- mainsailpartners.com
- Last read
- 8 Nov 2026
- Watching since
- 8 Nov 2026
- Rounds since
- 7 Oct 2025
- Companies checked
- 39
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
Get Mainsail Partners' profile as data
Pull Mainsail Partners' portfolio, co-investors and changes through one API key or MCP, open every portfolio row, compare it with other firms, and get an email when it adds a company or files a fund.
Work email, sign-in link by email. Already have an account? Log in- Ask AI5 plain-English investor searches a day
- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/mainsailpartners.com
# also
GET /v1/firms/mainsailpartners.com/portfolio
GET /v1/firms/mainsailpartners.com/coinvestors
GET /v1/firms/mainsailpartners.com/news