John Doerr
About John Doerr
John Doerr is an engineer, venture capitalist and chairman of Kleiner Perkins, where he has worked since 1980. He holds a B.S. and M.S. in electrical engineering from Rice University and an MBA from Harvard Business School. His technology career began in 1974 at Intel, where he held several roles.
Before and alongside venture investing he built companies. Per his Aspen Institute biography, he founded Silicon Compilers, a VLSI CAD software company, and co-founded the broadband internet service @Home. Crunchbase lists 0 companies founded for him, so treat the Aspen biography as the source for these two.
At Kleiner Perkins he was an original investor and board member at Google and Amazon. Other companies he has backed through the firm include Sun Microsystems, Compaq, Netscape, Intuit and Symantec. He wrote Measure What Matters, which covers the OKR goal-setting method, and Speed and Scale: An Action Plan for Solving Our Climate Crisis Now. Outside the firm he serves on the boards of the Obama Foundation and ONE.org.
Crunchbase counts 21 investments for Doerr as an individual in the data Lounge holds. It records 0 lead investments and 0 exits. Other trackers show different totals, so treat the number as approximate. His personal cheques usually appear as participation in rounds led by others, and he sits next to Kleiner Perkins in several companies.
His most recent angel round is Volantis. Seedtable describes it as his first cheque into semiconductors and lists a UK investment, Isometric, among his recent deals. Public sources do not state his personal cheque sizes.
Crunchbase shows 11 AI investments since 2023. The AI portfolio it lists is GridCARE, Volantis, Hippocratic AI, Eridu, Emerald AI, Forward, CuspAI, juna.ai, Rhoda AI and Currence.
The most recent is Volantis, a semiconductor company building photonics-based AI inference systems. It announced an $88M Series A on October 1, 2026, co-led by Lachy Groom and Abstract Ventures. John Doerr, VXI Capital, Triatomic and Susa Ventures also took part, along with angels including Dwarkesh Patel, Naveen Rao and Sholto Douglas. The Lounge deals desk records the same round.
He also took part in the Series C of Hippocratic AI in November 2025. It is a generative AI company focused on administrative healthcare tasks. Avenir Growth led that round, and Kleiner Perkins also participated. Other trackers list his investments in Emerald AI (Series A), Eridu (Series A, March 2026) and CuspAI (2026). Round details for those come from third-party data and were not checked against company announcements.
The public record points to hardware and infrastructure for AI, energy and climate technology, and AI applied to healthcare. His recent rounds are mostly Series A and later, in companies that already have institutional co-investors. Seedtable's data shows him leading none of them.
His public writing centers on climate and clean energy. In a recent letter on speedandscale.com he describes three forces shaping the energy future: rising electricity demand, the geopolitical advantage of clean technology, and falling clean energy costs. That interest fits his investments in Emerald AI and CuspAI. The location data covers the US and at least one UK deal. He has not published a check size, a stated thesis for pre-seed or seed AI startups, or a pitch process. Founders usually reach him through Kleiner Perkins or through co-investors.
- Volantis: semiconductor company building photonics-based AI inference systems. $88M Series A announced October 2026.
- Hippocratic AI: generative AI for administrative healthcare tasks. Series C in November 2025.
- Emerald AI: energy technology company. Series A, per Seedtable.
- Eridu: AI company. $200M Series A in March 2026, per Seedtable.
- CuspAI: AI company. 2026 investment, per PitchBook.
- Rhoda AI: robotics and AI company on his Crunchbase AI list.
- GridCARE, Forward, juna.ai and Currence: other AI companies on his Crunchbase AI list. Dates are not confirmed here.
- Google and Amazon: early investments and board seats through Kleiner Perkins.
- crunchbase.com/person/john-doerr
- crunchbase.com/person/22f2069a-a204-b897-320a-bdafa81093ba
- aspenideas.org/speakers/john-doerr
- lumeris.com/about-lumeris/leadership/l-john-doerr
- seedtable.com/investors/john-doerr
- finance.yahoo.com/technology/ai/articles/volantis-raises-88m-series-de
- siliconangle.com/2026/10/01/volantis-raises-88m-to-develop-photonic-in
- hlth.com/insights/news/hippocratic-ai-raises-126m-to-fund-mergers-acqu
AI portfolio
Investing activity
John Doerr has made 21 investments according to Crunchbase. 11 of those investments since 2023 were in AI companies, including GridCARE, Volantis, Hippocratic AI, Eridu and Emerald AI.
John Doerr appears in 4 AI deals tracked by the AI Lounge deals desk, rounds totalling $1.24B. The rounds are mostly Seed and Series A, with a median round size of $130M and the largest at $1B. The most recent are Dulo (Seed, $130M, Oct 2026), Flapping Airplanes (Series A, $1B, Oct 2026) and Volantis (Series A, $88M, Oct 2026).
John Doerr most often invests alongside Nvidia, Yuri Milner, Lowercarbon Capital and Marc Benioff, and the companies they back on AI Lounge are mostly in AI for hardware design, AI research models and Semiconductors / memory interconnect.
Deals
Frequently asked questions about John Doerr
Does John Doerr invest as an angel in AI startups?
Yes. Crunchbase lists 11 AI investments since 2023, including Volantis, Hippocratic AI, Eridu, Emerald AI and CuspAI. He also invests through Kleiner Perkins, where he is chairman.
What stage does John Doerr invest in?
His recent AI rounds are mostly Series A and later. Public data shows him participating in rounds led by others, not leading them.
What is John Doerr's check size?
It is not public. Lounge found no confirmed figure for his personal cheques, so we do not state one.
What sectors does John Doerr back?
Recent deals cover AI inference hardware, healthcare AI, AI for energy and climate, and robotics. He has also written at length about climate and clean energy.
How can founders reach John Doerr?
He is on LinkedIn and X (@johndoerr), and Kleiner Perkins publishes its own contact channels. He has not published a pitch process for personal investments, so a warm introduction from a co-investor or portfolio founder is the usual route.
Has John Doerr invested in Volantis?
Yes. He took part in Volantis's $88M Series A, announced October 1, 2026 and co-led by Lachy Groom and Abstract Ventures.
Is John Doerr an angel investor?
Yes. John Doerr invests personally as an angel. Crunchbase counts 21 investments.
What AI companies has John Doerr invested in?
John Doerr's AI investments include GridCARE, Volantis, Hippocratic AI, Eridu, Emerald AI, Forward, CuspAI and juna.ai. The 4 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is John Doerr based?
John Doerr is based in Menlo Park, United States.
What stage does John Doerr invest at?
In the rounds tracked on AI Lounge, John Doerr has invested at Seed and Series A, with a median round of $130M.