Jackson Square Ventures (formerly Sigma West) is an early-stage venture capital firm based in San Francisco that invests in B2B SaaS, marketplace, and AI-native companies. The firm was created in 2011 when the team spun out from Sigma Partners and rebranded in 2015.
Deal activity increased 100% year-over-year (2 deals in the last 12 months). Their most common stage is series-a (44% of deals). Average disclosed round size is $21.6M (across 35 rounds with reported amounts).
Portfolio
31
Fund Size
$193M
Top Stage
Series A
Last 12 Mo
2
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
36 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Artera | Growth | $65M | Dec 2025 |
 GitLaw | Pre-Seed | $3M | Nov 2025 |
 Cloverleaf AI | Seed | $2.8M | Nov 2024 |
 Harness Wealth | Series A | $17M | Mar 2024 |
 Ziplines Education | Series A | — | Feb 2024 |
 Clearstory | Series B | $16M | Jan 2024 |
 1Uphealth | Series C | $40M | Jan 2023 |
| 11up Health | Series A | $40M | Jan 2023 |
 Spiceology | Unknown | $7M | Jan 2022 |
| 1Uphealth | Series B | $25M | Jan 2021 |
 Strava | Series F | $110M | Nov 2020 |
 Seismic | Series F | $92M | Sep 2020 |
 CREXi | Series B | $30M | Jan 2020 |
 Outlier | Series A | $11.7M | Jan 2020 |
 Lyte | Series A | $15M | Oct 2019 |
 Waterline Data | Series B | $14.5M | Oct 2018 |
| KKindly Care | Series A | $5.4M | Jul 2018 |
| CREXi | Series A | $11M | May 2018 |
 Mynd | Series B | $20M | May 2018 |
| AAtrium LTS | Series A | $10.5M | Jun 2017 |
| PPlume Design, Inc. | Series B | $37.5M | Jun 2017 |
 Bus.com | Series A | $15M | Apr 2017 |
| MMynd Property Management | Series C | $5.1M | Mar 2017 |
 Cornershop | Series A | $21M | Jan 2017 |
| KKindly Care | Seed | $3.1M | Oct 2016 |
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Top Co-Investors
Eniac Ventures4 shared
Lightspeed Venture Partners3 shared
The LegalTech Fund3 shared
Fidelity Investments3 shared
F-Prime Capital3 shared
General Catalyst2 shared
Arena Holdings2 shared
Tectonic Ventures2 shared
Canaan Partners2 shared
Lerer Hippeau2 shared
Industry Ventures2 shared
Prudence Holdings2 shared
Techstars2 shared
MHS Capital2 shared
Floodgate Fund2 shared
Social Leverage2 shared
Sixth Street Growth2 shared
Future Fund2 shared
DocuSign Ventures2 shared
Last updated: 8 September 2026