David Marquardt
Co-Founder, General Partner @ August Capital
San Francisco, United States
David Marquardt is a Series A investor at August Capital in San Francisco focused on Energy and Renewable Energy. A co-founder of August Capital in 1995, Dave's commitment to entrepreneurs and their market vision is reflected by his long-standing board relationships, he has served on more than 25 boards of directors during his 20 year venture capital career including Microsoft, Sun, Seagate, Adaptec, and Grand Junction Networks (acquired by Cisco).Priorto August Capital, Dave was a co-founder of Technology Venture Investors (TVI) in 1980 where he was involved in four highly successful funds that invested in more than 100 start-up and emerging growth companies. Among these early investments was Microsoft, where TVI was the sole investor and where Dave has been on the board of directors since 1981.Dave began his venture career at Institutional Venture Associates, where he spent a year after graduating from business school. Previously, Dave was a design engineer and development manager at Diablo Systems (acquired by Xerox) where he collaborated on and/or led various disk drive and printer programs.Dave received a BSME from Columbia University and an MBA from Stanford University. He also completed coursework for an MSEE at Stanford University. He has served as president of the Western Association of Venture Capitalists and is a past director of the National Venture Capital Association.
- Total investments:
- 8
- Last investment:
- Lead investor:
- 50%
Last updated:
For AI agents: llms.txt
Industries David Marquardt invests in
Stages David Marquardt invests in
Countries David Marquardt invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Series A
- $3.9M–$20M
Investment Focus
Industry
- Energy 2 (25%)
- Renewable Energy 2 (25%)
- Mobile 1 (13%)
- Battery 1 (13%)
- FinTech 1 (13%)
Stage
- Series A 2 (25%)
- Series B 1 (13%)
- Series C 1 (13%)
- Series D 1 (13%)
- Funding Round 1 (13%)
Country
- United States 4 (50%)
- Canada 1 (13%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Gridtential Energy develops an Absorbent Glass Mat battery that offers a lower-cost, safer, greener alternative to traditional lithium-ion.The company's bipolar battery technology, Silicon Joule, transforms the familiar lead battery into a powerful, fast-charging, long-lasting source of energy for electric vehicles, homes, and offices. Itincorporates solar wafer processing techniques into novel bipolar battery architectures while integrating seamlessly into existing battery manufacturing and recycling infrastructures. The result is a high-performance, low-cost, quickly scalable technology platform that also eliminates failure mechanisms, extends cycle life, and improves power performance at a fundamental level.The Santa Clara, California-headquartered company was established by Peter Borden and Michele Klein in 2010. | $12M / Convertible Note / Apr 27, 2021 | ||
| Last Energy develops and delivers micro modular nuclear power plants designed to provide decarbonized, reliable energy through a full-service delivery model that spans design, construction, and operations. The company offers factory-produced modular plants, like its 20 MWe PWR-20 units, that can be deployed rapidly to serve energy-intensiveindustrial customers and utilities with baseload electricity and heat. Its services include long-term power purchase agreements that eliminate upfront capital for customers while enabling flexible siting and minimal resource requirements. Last Energy’s solutions support both behind-the-meter applications for industries and grid-scale energy projects for broader power delivery. The company integrates established reactor technology with its delivery process to help clients access consistent, carbon-free energy. | $20M / Series A / Feb 16, 2021 | ||
| Quandl offers essential core financial and economic data alongside a suite of unique, alpha-generating alternative data. With an unrivaled delivery system -- whether through API or popular analytic tools, such as R, Python and Excel -- Quandl has cemented a reputation for understanding and providing what professional quantitative analysts need andwant.The Quandl user base includes analysts from the world’s top hedge funds, asset managers and investment banks.The company was founded in 2011 and is based in Toronto, Canada. | $11.6M / Series B / Jul 03, 2016 | ||
| Netpulse is the largest provider of branded mobile club apps that engage members, drive revenue, and integrate deeply with the club's most important technology solutions. Industry leaders such as Gold's Gym, Retro Fitness and Equinox leverage Netpulse's mobile solutions in clubs all over the world. A complete mobile experience isdelivered by partnering with top technology solutions, including ABC Financial, Club Comm and Perkville. Founded in 2001, by Bryan Arp and Intuit co-founder Tom Proulx, Netpulse has since raised $40M in funding and is headquartered in San Francisco. | $13M / Series D / Jun 06, 2016 | ||
| Quandl offers essential core financial and economic data alongside a suite of unique, alpha-generating alternative data. With an unrivaled delivery system -- whether through API or popular analytic tools, such as R, Python and Excel -- Quandl has cemented a reputation for understanding and providing what professional quantitative analysts need andwant.The Quandl user base includes analysts from the world’s top hedge funds, asset managers and investment banks.The company was founded in 2011 and is based in Toronto, Canada. | $3.9M / Series A / Oct 28, 2014 | ||
| Netpulse is the largest provider of branded mobile club apps that engage members, drive revenue, and integrate deeply with the club's most important technology solutions. Industry leaders such as Gold's Gym, Retro Fitness and Equinox leverage Netpulse's mobile solutions in clubs all over the world. A complete mobile experience isdelivered by partnering with top technology solutions, including ABC Financial, Club Comm and Perkville. Founded in 2001, by Bryan Arp and Intuit co-founder Tom Proulx, Netpulse has since raised $40M in funding and is headquartered in San Francisco. | $18.6M / Series D / Sep 29, 2014 | ||
| Netpulse is the largest provider of branded mobile club apps that engage members, drive revenue, and integrate deeply with the club's most important technology solutions. Industry leaders such as Gold's Gym, Retro Fitness and Equinox leverage Netpulse's mobile solutions in clubs all over the world. A complete mobile experience isdelivered by partnering with top technology solutions, including ABC Financial, Club Comm and Perkville. Founded in 2001, by Bryan Arp and Intuit co-founder Tom Proulx, Netpulse has since raised $40M in funding and is headquartered in San Francisco. | $15.6M / Series C / Jul 30, 2012 | ||
| Microsoft manufactures personal computers and accessories under the Surface line, alongside engineering the Windows operating system family for computing devices. Its product architecture incorporates the Microsoft 365 cloud productivity suite, which packages digital tools for database administration, internal communications, and electronic mailing. For corporate infrastructure, the organization supplies cloud computing capabilities via Microsoft Azure, enterprise optimization software through Dynamics 365, and cybersecurity automation applications. The firm also oversees the Xbox video gaming brand, managing subscription services, hardware consoles, and digital entertainment storefronts. | $1M / Sep 01, 1981 |
Co-Investors
About August Capital
August Capital is an early stage venture capital fund focused on investing in companies differentiated by technical innovation and entrepreneurial excellence. Today, August Capital's six active investment professionals -- David Hornik, Eric Carlborg, Howard Hartenbaum, Tripp Jones, Villi Iltchev, and Lisa Marrone -- have more than a century of combined venture and operational experience. Together they manage $2.5 billion and have invested in hundreds of companies across the technology spectrum. From its inception, August Capital has funded an extraordinary group of entrepreneurs who have built significant, long-term value across the full range of information technologies. The companies that August Capital's partners have backed represent an aggregate market capitalization of well over $250 billion, generate in excess of $75 billion in annual revenue and employ a quarter of a million people around the world. This success is a testament to the entrepreneurs themselves, as well as the fundamental technologies they have created. They are proud to have supported these entrepreneurs and their companies as they have grown and prospered.
August Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Eric Carlborg
General Partner, Investment Professional
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David Hornik
General Partner
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David Marquardt
Co-Founder, General Partner
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Howard Hartenbaum
General Partner
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John Johnston
Founding Partner
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FAQ
What does David Marquardt invest in?
David Marquardt invests primarily in Energy, Renewable Energy and Mobile startups, most often at Series A and Series B stage. Most of the 8 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does David Marquardt invest in?
David Marquardt typically joins rounds of $3.9M–$20M at Series A. These are whole funding-round sizes, not David Marquardt's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds David Marquardt took part in.
How do I contact David Marquardt?
Public channels for David Marquardt include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did David Marquardt last invest?
The most recent investment recorded for David Marquardt closed in Apr 2021. Shizune tracks 8 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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