Greg Penner
Founder & General Partner @ Madrone Capital Partners
Atherton, United States
Greg Penner is a Series B investor at Madrone Capital Partners in Atherton focused on Internet and Search Engine. Greg is a Founder & General Partner at Madrone Capital Partners, an investment management firm based in Menlo Park, California. Prior to joining Madrone, Greg was the SVP and CFO of Wal-Mart Japan from 2002-2005 and the SVP of Finance and Strategy for Walmart.com from 2000-2002. From 1997-2000, Greg was a General Partner at PeninsulaCapital, an early stage venture capital fund. Previously, he worked in strategic planning at Wal-Mart Stores, Inc. and corporate finance at Goldman, Sachs & Co.Over a 20-year period, Penner has worked with Walmart in a number of capacities, including as senior vice president and CFO-Japan and senior vice president of finance and strategy for walmart.com. He was first elected to the Walmart Board in 2008 and has served as a member on the Strategic Planning and Finance Committee and as chairman of the Technology and eCommerce Committee.Penner has been a member of the board of directors of Baidu, Inc., since 2004 and previously served on the board of directors of Hyatt Hotels Corporation from 2007 to 2014.Cuil, Inc., eHarmony, Inc.,and 99Bill Corporation (Shanghai). Penner earned a B.S. in International Economics from Georgetown University in 1992 and an MBA from the Stanford Graduate School of Business in 1997.
- Total investments:
- 8
- Last investment:
- Lead investor:
- 63%
Last updated:
For AI agents: llms.txt
Industries Greg Penner invests in
Stages Greg Penner invests in
Countries Greg Penner invests in
Contacts
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Investment Focus
Industry
- Internet 2 (25%)
- Search Engine 2 (25%)
- TV 1 (13%)
- Mobile 1 (13%)
- Content 1 (13%)
Stage
- Series B 3 (38%)
- Series A 2 (25%)
- Series C 1 (13%)
- Series E 1 (13%)
- Venture - Series Unknown 1 (13%)
Country
- United States 3 (38%)
- China 2 (25%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Carbon brings together innovations in software, hardware, and molecular science to deliver industry-leading digital manufacturing solutions. With proprietary Carbon Digital Light Synthesis (DLS) technology and family of programmable liquid resins, manufacturers can unlock new business opportunities such as mass customization, on-demand inventory,and previously impossible product designs. The Carbon Platform allows customers to build uniquely differentiated products while reducing waste and speeding time to market.Carbon was founded by Dr. Joseph DeSimone and Philip DeSimone in 2013. | $260M / Series E / Jun 25, 2019 | ||
| Quibi is a media company that develops media content designed for smartphones. The company is focused on the core audience, producing inspiring shows for an intuitive, mobile-first platform, and creating a culture where everyone is heard. Its content is made specifically for mobile devices and can be viewed in either horizontal or vertical video,with the user able to shift to one or the other within the same video.It was founded in 2018 and is headquartered in Los Angeles, California. | $1B / Venture - Series Unknown / Aug 07, 2018 | ||
| Cuil was a stealth search engine startup which claims that it can index web pages significantly faster and cheaper than Google. Cuil has told potential investors that their indexing costs will be 1/10th of Google's, based on new search architectures and relevance methods. In some ways Cuil is the polar opposite of huge indexing costs because it does a deep contextual analysis on every sentence on every web page. Powerset's indexing costs, therefore, should be much higher per web page than Google's.Cuil was also founded by highly respected search experts. Husband and wife team Tom Costello and Anna Patterson were joined by Russell Power. Patterson and Power are ex-Cuil met with venture capitalists, but we're hearing that Costello and Patterson eventually self-funded the company with a $5ish million injection of capital. They now have 10-15 employees and an office in Menlo Park. | $25M / Series B / Apr 15, 2008 | ||
| Cuil was a stealth search engine startup which claims that it can index web pages significantly faster and cheaper than Google. Cuil has told potential investors that their indexing costs will be 1/10th of Google's, based on new search architectures and relevance methods. In some ways Cuil is the polar opposite of huge indexing costs because it does a deep contextual analysis on every sentence on every web page. Powerset's indexing costs, therefore, should be much higher per web page than Google's.Cuil was also founded by highly respected search experts. Husband and wife team Tom Costello and Anna Patterson were joined by Russell Power. Patterson and Power are ex-Cuil met with venture capitalists, but we're hearing that Costello and Patterson eventually self-funded the company with a $5ish million injection of capital. They now have 10-15 employees and an office in Menlo Park. | $8M / Series A / Mar 01, 2007 | ||
| 99Bill Corporation provides e-mail and mobile phone number based payment solutions. The company offers bank and prepaid card processing, account refilling, mass payment, data security, and online marketing services. Additionally, it provides automatic reload payment services for online gaming operations. The company partners with Bank of China,China UnionPay, CITIC Industrial Bank, Hua Xia Bank, NetEase, Ourgame, Kingsoft, and NetDragon. 99Bill Corporation was founded in 2005 and is based in Shanghai, China with additional offices in Beijing and Guangzhou, China. | Series B / Apr 26, 2006 | ||
| Baidu is a search engine that enables individuals to obtain information and finds what they need. Baidu offers functional online search, Tieba community search, industry-based vertical search, mp3 search, portal channels, and instant messaging services. Its products include Baidu Webpage, Baidu Video, Baidu Map, hao123.com, BaiduPedia, Baidu Input,Baidu Toolbar, TTPlayer, Iqiyi, and Sky Software. | $15M / Series C / Jun 18, 2004 | ||
| Baidu is a search engine that enables individuals to obtain information and finds what they need. Baidu offers functional online search, Tieba community search, industry-based vertical search, mp3 search, portal channels, and instant messaging services. Its products include Baidu Webpage, Baidu Video, Baidu Map, hao123.com, BaiduPedia, Baidu Input,Baidu Toolbar, TTPlayer, Iqiyi, and Sky Software. | $10M / Series B / Sep 01, 2000 | ||
| Baidu is a search engine that enables individuals to obtain information and finds what they need. Baidu offers functional online search, Tieba community search, industry-based vertical search, mp3 search, portal channels, and instant messaging services. Its products include Baidu Webpage, Baidu Video, Baidu Map, hao123.com, BaiduPedia, Baidu Input,Baidu Toolbar, TTPlayer, Iqiyi, and Sky Software. | $1.2M / Series A / Feb 01, 2000 |
Co-Investors
About Madrone Capital Partners
Madrone Capital Partners is a Private equity firm associated with Rob Walton, the eldest son of Walmart founder Sam Walton. It specializes in the fields of asset management, cleantech, and finance. It was founded in 2005 and headquartered in Menlo Park, California.
Madrone Capital Partners Contacts
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Greg Penner
Founder & General Partner
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Jameson J. McJunkin
General Partner
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Thomas A. Patterson
Founder and Managing Partner
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FAQ
What does Greg Penner invest in?
Greg Penner invests primarily in Internet, Search Engine and TV startups, most often at Series B and Series A 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.
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When did Greg Penner last invest?
The most recent investment recorded for Greg Penner closed in Jun 2019. 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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