# JB Straubel: portfolio, investments and team > JB Straubel is a vc firm. 3 investments on record, 2 in the last 12 months, latest Jun 2026. Portfolio, stages, co-investors and team. Source: https://millionrounds.com/fund/jb-straubel (Millionrounds; every figure on the page links to its filing or article) [Investor](https://millionrounds.com/investors) # JB Straubel Last cheque observed Jun 2026; 3 cheques on record. Email Deploying now VC firm Seed Series A Series E Follow JB Straubel and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Fjb-straubel) Deploying now **100%** of best year **2** **cheques in 12 months**, 3 on record Since the last cheque **149** days **00** hrs **00** min **00** sec Median round **$38M** Rounds led **0 of 3** Pitch JB Straubel ## JB Straubel highlights - 01 2 cheques in the last 12 months - 02 Mostly Seed and Series A: 67% of its rounds ## What they do - **Type:** VC firm (from a list, unverified) - **Cheque size:** Not stated - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **3 appearances** - **2026** 1 round - **Jun** **[Red Metals](https://millionrounds.com/company/red-metals)** Seed · US · Ventureburn **$10M** With 3 others - **2025** 2 rounds - **Dec** **[Fervo Energy](https://millionrounds.com/company/fervo-energy)** Series E · US · TechCrunch **$462M** With 24 others - **May** **[Heron Power](https://millionrounds.com/company/heron-power)** Series A · US · TechCrunch **$38M** With 7 others An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor. ## The cheque Seed Series A Series E Median round joined **$38M** the round, not its cheque Led 0 of 3 rounds **0%** - **Sole investor:** Never alone - **Last cheque:** Jun 2026 Rounds by stage said on their site - Seed *1* - Series A *1* - Series E *1* Cheques by month Led Joined Dec 2023 Nov 2026 Often in the room with - [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) 2 - [Capricorn Investment](https://millionrounds.com/fund/capricorn-investment-group) 2 - [Gigascale Capital](https://millionrounds.com/fund/gigascale-capital) 2 **Pitching JB Straubel?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque. Add to your CRM *→* ## Who they invest alongside The investors most often in the same rounds as JB Straubel. A count of rooms they were both in, not a relationship either has claimed. [**Breakthrough Energy** VC firm **2** rounds together](https://millionrounds.com/fund/breakthrough-energy)[**Capricorn Investment** Family office **2** rounds together](https://millionrounds.com/fund/capricorn-investment-group)[**Gigascale Capital** VC firm **2** rounds together](https://millionrounds.com/fund/gigascale-capital) ## Recently backed The latest companies JB Straubel put money into. [**Red Metals** $10M · Jun 2026](https://millionrounds.com/company/red-metals)[**Fervo Energy** $462M · Dec 2025](https://millionrounds.com/company/fervo-energy)[**Heron Power** $38M · May 2025](https://millionrounds.com/company/heron-power) ## On podcasts 1 episode naming JB Straubel in the title, and 2 more that mention it. - [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) 7 Oct 2021 · 1h 25m Fantasy startup investing NFTs + former Tesla CTO JB Straubel's Redwood Materials | E1299 Mentions [JB Straubel](https://millionrounds.com/fund/jb-straubel) Apple PodcastsShow page ### Mentioned in - [Equity](https://millionrounds.com/podcasts/equity) 3 Jul 2025 · 30 min Why Cloudflare wants AI companies to pay for content Apple Podcasts - [Equity](https://millionrounds.com/podcasts/equity) 27 Jun 2025 · 36 min Big Tech lands an early win in legal battles against publishers Apple Podcasts ## Quick answers about JB Straubel ### What does JB Straubel invest in? JB Straubel invests most often at Seed and Series A (67% of the rounds on record). ### How active is JB Straubel? 3 investments on record, 2 of them in the last 12 months. The most recent was in Jun 2026. ### What has JB Straubel invested in recently? Its most recent investments on record: Red Metals (Seed, Jun 2026), Fervo Energy (Series E, Dec 2025) and Heron Power (Series A, May 2025). ### How big are JB Straubel's cheques? The median round it joins is $38M. ### Is JB Straubel investing now? Yes: it is actively investing, with 2 investments in the last 12 months. ### Who does JB Straubel invest alongside? Most often Breakthrough Energy (2 rounds together), Capricorn Investment (2 rounds together) and Gigascale Capital (2 rounds together). ### What kind of investor is JB Straubel? JB Straubel is a VC firm. ### Where does this information on JB Straubel come from? From 4 articles and filings naming it in a round, public registers and its own website, checked and rebuilt every night. ## Raising now? Find the investors who back rounds like yours, and keep every conversation on one fundraising board. Find similar investorsOpen your CRM Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=jb-straubel) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=jb-straubel)