SW
Sigma West
Sigma West is a seed to Series D stage investment firm. It has made 4 investments. Their most common stage is series-a (43% of deals). Average disclosed round size is $321.3M (across 7 rounds with reported amounts).
Portfolio
4
Fund Size
—
Top Stage
Series A
Last 12 Mo
0
Team
BS
Bob Spinner
Founding Partner, Managing Director
Portfolio Breakdown
Stage Distribution
Investment Activity
DealsAvg Round Size
Portfolio
7 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Strava | Series D | $2.2B | Jan 2025 |
| TToutApp | Series B | $15M | Mar 2015 |
| TToutApp | Series B | $15M | Jan 2015 |
 Omniata | Series A | $5.2M | Mar 2014 |
| Omniata | Series A | $5.2M | Jan 2014 |
 Waterline Data | Series A | $7M | Jan 2014 |
| Omniata | Seed | $1.6M | — |
Top Co-Investors
Jackson Square Ventures3 shared
Creandum2 shared
500 Global2 shared
Andreessen Horowitz2 shared
Founder Collective2 shared
LAUNCH2 shared
Adage Capital Management1 shared
Sequoia Capital1 shared
Menlo Ventures1 shared
Last updated: 19 September 2026