About Sigma Partners
Sigma Partners is a venture capital firm founded in 1984. It is primarily based out of Danville, United States. As of Feb 2022, Sigma Partners has invested in 125 companies. It primarily invests in Series B round in United States based startups. Its investments are spread across a wide range of sectors from Enterprise Applications to High Tech and Enterprise Infrastructure. Most recently it participated in the $***** Series C round of Doxo Overall, Sigma Partners portfolio has seen 2 unicorns, 6 IPOs and 82 acquisitions including key companies like DocuSign, Upwork and Strava. A lot of funds co-invest with Sigma Partners, with names like Globespan Capital Partners sharing a substantial percentage of its portfolio. Sigma Partners has team of 7 people including 5 partners.Key Metrics
Team Members
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Series A, Series B & 5 more
Portfolio IPOs
Portfolio Acquisitions
Portfolio Soonicorns
Sigma Partners' List of Top Investments
Sigma Partners has a portfolio of 125 companies, including 2 unicorns. Their most notable investments are in Azuki Systems and Azuki Systems.Their portfolio spans across United States, Canada, Belgium and 7 more locations. They have invested in Enterprise Applications, High Tech, Enterprise Infrastructure and 25 other sectors, across stages such as Series A, Series B and 5 more. Here is the list of top investments by Sigma Partners:
1. DocuSign
Provider of electronic signature and intelligent agreement management platform solutions. The platform offers tools for contract lifecycle management, agreement preparation, and agreement workflow automation. It provides features such as electronic notarization, web forms, and multi-channel delivery options. The platform extends its capabilities through integrations, APIs, and a mobile application.
Key facts about DocuSign
- Founded Year: 2003
- Location: San Francisco (United States)
- Annual Revenue: $1B+ as on Jan 31, 2026
- Stage: Public
- Total Funding till date: $520M
- Employee Count: 8,578 as on Aug 31, 2026
- Investors: HTIF, Glynn Capital and 92 Others
- Latest Funding Round: Post IPO, Jul 20, 2020, $*****
- Highlight: Public
2. Upwork
Provider of freelance marketplace connecting businesses with independent talents. It offers an AI powered suggestions, screening questions, and boosted proposals for visibility, built-in tool with screenshots and activity logs for hourly work transparency . It provides in-app messaging, file sharing, video calls, and mobile apps for iOS and Android.
Key facts about Upwork
- Founded Year: 1999
- Location: San Francisco (United States)
- Annual Revenue: $500M - $1B as on Dec 31, 2025
- Stage: Public
- Total Funding till date: $74M
- Employee Count: 179,375 as on Aug 31, 2026
- Investors: Section Partners, T. Rowe Price and 24 Others
- Latest Funding Round: Post IPO, Aug 10, 2021, $*****
- Highlight: Public
3. Strava
Provider of application for tracking, analyzing, and sharing fitness activities. The application allows users to record activities and view performance data. It also enables users to connect with friends and discover routes, maps, and challenges. The application is compatible with mobile phones and GPS devices.
Key facts about Strava
- Founded Year: 2009
- Location: San Francisco (United States)
- Valuation: $*****
- Stage: Series G
- Total Funding till date: $180M
- Employee Count: 996 as on Aug 31, 2026
- Investors: Founders Circle Capital, Dragoneer Investment Group and 12 Others
- Latest Funding Round: Conventional Debt, Jun 13, 2025, $*****
- Highlight: Editors' Pick
4. Nextracker
Provider of integrated utility-scale solar platform solutions from design to operations. The company delivers execution through logistics coordination and installation. Specialized equipment and training ensures teams are prepared for challenges. It offers support across every stage of project development.
Key facts about Nextracker
- Founded Year: 2013
- Location: Fremont (United States)
- Annual Revenue: $1B+ as on Mar 31, 2026
- Stage: Public
- Total Funding till date: $42.6M
- Employee Count: 1,004 as on Aug 31, 2026
- Investors: ClearSky, SJF Ventures and 7 Others
- Latest Funding Round: Series C, Jun 17, 2015, $*****
- Highlight: Public
Provider of voice security and authentication solutions for virtual interactions. The company delivers tools to identify fraud and deepfakes in contact centers and meetings. It offers authentication and risk assessment using voice, device, and behavioral analysis. Solutions cater to various industries, securing communications across multiple channels.
Key facts about Pindrop Security
- Founded Year: 2011
- Location: Atlanta (United States)
- Valuation: $*****
- Stage: Series D
- Total Funding till date: $232M
- Employee Count: 366 as on Aug 31, 2026
- Investors: Cross Creek, CapitalG and 40 Others
- Latest Funding Round: Venture Debt, Jul 17, 2024, $*****
- Highlight: Editors' Pick
Sigma Partners' Investments by Stage
Sigma Partners has made 45 investments in Series A stage with an average round size of $7.86M, 41 investments in Series B stage with an average round size of $13.2M and 11 investments in Series C stage with an average round size of $14.4M.Stage of entry | No. of Investments |
|---|---|
Series A | 45 |
Series B | 41 |
Series C | 11 |
Series E | 4 |
Seed | 3 |
Others | 4 |
Note: We have considered here, only first round of investments
Sigma Partners' Investments by Sector
Sigma Partners has a diverse portfolio, with companies operating in the Enterprise Applications, Enterprise Infrastructure, High Tech, Business Services and Semiconductors. Notably, it has invested in 101 Enterprise (B2B) companies, 93 Tech companies, 72 Software companies and at least 43 companies focusing on Saas.Sector | No. of Investments |
|---|---|
Enterprise Applications | 61 |
Enterprise Infrastructure | 28 |
High Tech | 16 |
Business Services | 8 |
Semiconductors | 8 |
Others | 91 |
Note: We have considered here, only first round of investments
Sigma Partners' Investments by Geography
Sigma Partners has made most investments in United States (99), followed by Canada where it has made 3 investments.Country | No. of Investments |
|---|---|
United States | 99 |
Canada | 3 |
Belgium | 1 |
Chile | 1 |
France | 1 |
Others | 3 |
Note: We have considered here, only first round of investments
Sigma Partners' recent investments
Sigma Partners has not made any investment in 2026 so far.Here are the most recent investments by Sigma Partners:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Feb 25, 2022 | United States | Series C | 5152 | ||
Aug 28, 2019 | United States | Series C | 5453 | [+3] | |
Aug 18, 2017 | United States | Series E | 9382 | [+7] | |
Mar 31, 2017 | United States | Series G | 4284 | [+6] | |
Dec 12, 2016 | United States | Series E | 4200 | [+2] |
Unicorns in Sigma Partners' Portfolio
Sigma Partners has 2 unicorns in its portfolio - Nasuni and Strava. The most recent unicorn in their portfolio is Nasuni. It became a unicorn in 2024, 14 years after Sigma Partners first invested in it.Here is a list of unicorns in Sigma Partners' portfolio:
Tracxn Score | Company | Short Description | Founded year | Sector | Location | Company Stage | First Investment/ Acquisition Details |
|---|---|---|---|---|---|---|---|
70 | Cloud based enterprise file system storage provider | 2009 | Natick | Series F | ejt{poj | ||
80 | Provider of application for tracking, analyzing, and sharing fitness activities | 2009 | San Francisco | Series G | qxx{nme |
IPOs and Publicly Listed companies in Sigma Partners' Portfolio
6 of Sigma Partners' portfolio companies have become public. Nextracker got listed on the National Association of Securities Dealers Automated Quotations (NASDAQ), in Feb 2023 at marketcap of $925M and View got listed on the National Association of Securities Dealers Automated Quotations (NASDAQ).Here are Sigma Partners' portfolio companies that went public:
Company | IPO Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Feb 09, 2023 | Dec 17, 2014 | Series B | 2687 | |
Oct 20, 2020 | Feb 18, 2009 | Conventional Debt | 1135 | |
Oct 03, 2018 | Apr 25, 2006 | Series A | 1766 | |
Apr 27, 2018 | Apr 04, 2006 | Series B | 9843 | |
Oct 07, 2016 | Jun 2008 | Series A | 5365 |
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Acquired companies in Sigma Partners' Portfolio
82 companies from Sigma Partners' portfolio have been acquired. The most recent acquisition was CrownPeak in Dec 2025 by Rezolve for $*****.Here are Sigma Partners' portfolio companies that got acquired most recently:
Company | Acquisition Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Dec 01, 2025 | Apr 07, 2006 | Series A | 5200 | |
Sep 29, 2025 | - | - | 7217 | |
Sep 10, 2025 | Jul 28, 2011 | Series C | 7491 | |
Jul 08, 2025 | - | - | 7370 | |
Dec 14, 2022 | Aug 25, 2005 | Series A | 6059 |
Team profile of Sigma Partners
Sigma Partners has a team of 7 members including 5 Partners located in United States and Switzerland. Sigma Partners' team sits on the board of 2 companies.Here is a list of all team members in Sigma Partners:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Zurich | - | ||
Partner | Boston | |||
Partner | Jackson | - | ||
Partner | San Francisco | - | ||
Partner | Boston |
Co-investors of Sigma Partners
Over the past 29 years, 455 investors have co-invested in Sigma Partners's portfolio companies. This includes funds and angels.
- Invested before Sigma Partners: Sigma Prime Ventures, HWVP and 58 others have invested in rounds before Sigma Partners. There are 3 companies where Sigma Prime Ventures has invested before Sigma Partners and 3 companies where HWVP has invested before Sigma Partners.
- Top Co-investors of Sigma Partners: 133 investors entered a company along with Sigma Partners. These include investors like Globespan Capital Partners (9 companies).
- Invested after Sigma Partners: A total of 262 investors have invested in Sigma Partners's portfolio after their investments. Top Investors include Split Rock Partners (5 companies), Sigma Prime Ventures (5 companies) and Adams Street Partners (5 companies).
Recent News related to Sigma Partners
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Bill Payment Platform Doxo Raises $18.5MPYMNTS.com•Mar 17, 2022•Doxo, Jackson Square Ventures, Doxdirect, MDV SpartanNash and 3 others
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aPriori Secures $26.8M Series C Financing RoundBusiness Wire•Sep 10, 2019•aPriori, Autodesk, NewSpring, Pbjcapitalllc and 2 others
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Demandbase raises $65M to help business-to-business firms drive more salesSiliconAngle•May 25, 2017•Demandbase, Sageview Capital, Silver Lake, Altos Ventures Management and 5 others
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Rethink Robotics raises $18 million in new fundingRobotics and Automation News•Jan 03, 2017•Rethink Robotics, Schroder Adveq, Bezos Expeditions, CRV and 7 others
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Natick cloud storage company raises $25M to meet 'intense demand'The Business Journals•Dec 13, 2016•Nasuni, Eastward Capital Partners, Sigma Prime Ventures, Sigma Partners and 2 others
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Silicon Valley hardware startup Kateeva raises $38M for flexible displaysVentureBeat•Oct 15, 2016•Kateeva, Samsung Venture Investment, Sigma Partners, DBL Partners and 1 other
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DocuSign Raises $47.5 Million To Accelerate Growth | DocuSignDocuSign•Dec 10, 2015•DocuSign, Accel, Comcast Ventures, Sapphire Ventures and 7 others
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Golden Seeds Invests in Paradigm4 - Paradigm4Paradigm4•Nov 30, 2015•Paradigm4, Golden Seeds, Sigma Partners, Kepha Partners
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Mogl Raises $8,000,000 More in Funding to Close the Gap Between Online and Offline Commerce PRWeb•Aug 11, 2015•Mogl, Aequitas Capital, Avalon Ventures, Sigma Partners and 4 others
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