Discover if this is a suitable investor for your startup. If they are we'll make a warm introduction for free. Otherwise, we'll connect you with matching investors.
Giant Ventures is a venture capital firm founded in 2019 by Cameron McLain and Tommy Stadlen. The firm operates with a transatlantic presence, maintaining offices in London, San Francisco, New York, and Copenhagen. Giant Ventures focuses on supporting technology-driven companies that aim to rebuild foundational systems across various sectors, including AI, energy, healthcare, and climate technology.
As of early 2024, Giant Ventures has raised a total of $250 million across two new funds, with plans to deploy over $1 billion into sustainable technology over the next decade. The firm is backed by notable investors, including Richard Branson's Virgin Group. Giant Ventures has established a reputation for investing in ultra-ambitious, purpose-driven founders who are reimagining foundational systems.
With a portfolio of over 48 companies, Giant Ventures has made significant strides in the venture capital landscape, being recognized in BuiltWorlds' 2025 Top 50 Venture Investors. The firm emphasizes a collaborative approach, leveraging its extensive network to provide strategic guidance and support to its portfolio companies.
Giant Ventures invests in early-stage and growth-stage companies, primarily focusing on sectors such as AI, energy, healthcare, biotech, climate, consumer, fintech, robotics, industrial, and food-agtech. The firm typically leads investment rounds at the Pre-seed and Seed stages, extending to Series A, and also participates in Growth rounds from Series B onwards. The firm seeks to support ultra-ambitious, purpose-driven founders who are reimagining foundational systems.
The investment strategy is centered around three core themes: climate, health, and inclusive capitalism. Within these themes, the firm explores four sub-themes: Environment, Cities, Health & Wellbeing, and Financial Inclusion. Giant Ventures aims to invest in companies that utilize technology to reshape civilization, focusing on sectors such as health tech, energy tech, fintech, agri-tech, and AI.
Giant Ventures prefers to lead rounds and often engages in follow-on investments, demonstrating a commitment to supporting its portfolio companies throughout their growth journey. The firm’s geographic focus spans North America and Europe, reflecting its transatlantic operational model.
Giant Ventures boasts a diverse portfolio of over 48 companies, including notable names and innovative startups:
Cameron McLain - Co-Founder and Managing Partner. McLain is a tech founder and leading angel investor, previously associated with Hummingbird Ventures. He has a strong background in technology and entrepreneurship.
Tommy Stadlen - Co-Founder and General Partner. Stadlen co-founded Swing Technologies, which was acquired by Microsoft. He has served as a climate-policy advisor to President Obama and is a bestselling author on sustainability.
Mohadeseh Abdullahi - Partner. Abdullahi is a former investor at Molten Ventures and co-founder of Impact One, bringing expertise in impact investing.
Lucy Brady - Head of Product. Brady previously served as a director at Oscar Health and worked with the White House Digital Service, focusing on product development and strategy.
Hayden Wood - Venture Partner. Wood is the founder of Bulb, a leading energy supplier in the UK.
Nicolaj Reffstrup - Venture Partner. Reffstrup is the founder of Ganni, a notable fashion brand.
Pierre Denis - Venture Partner. Denis is the former CEO of Jimmy Choo, contributing significant retail and brand experience.
To pitch Giant Ventures, founders should submit their applications through the online portal at Giant Ventures Application. The firm prefers concise decks that clearly outline the business model, market opportunity, and team qualifications. Founders should expect a response within a few weeks, and warm introductions are encouraged but not mandatory.
Giant Ventures organizes the **Giant Ideas** summit, which gathers global leaders, founders, and investors to discuss technology as a force for good. This program aims to foster collaboration and innovation among participants, although specific details regarding the duration, cohort size, or investment amounts for this program were not provided.
In January 2024, Giant Ventures announced a $250 million fundraise, marking a significant milestone in its investment strategy. This capital will be deployed across seed and growth stages, with a strong focus on climate tech.
Throughout 2025, the firm actively led 16 investments, including notable deals such as a $44 million Series B round for Pano AI and a $40 million debt and equity round for Haven Energy. These investments reflect Giant Ventures' commitment to supporting innovative solutions in climate and health sectors.
Giant Ventures has been recognized in various media outlets, including TechCrunch and UK Tech News, for its impactful investments and strategic approach to venture capital.
What are Giant Ventures' investment criteria?
Giant Ventures invests in early-stage and growth-stage companies, focusing on sectors such as AI, energy, healthcare, and climate technology. The firm seeks ultra-ambitious, purpose-driven founders who are reimagining foundational systems.
How can I pitch to Giant Ventures?
Founders can apply through the online application form available at Giant Ventures Application. It is recommended to provide a clear overview of the business model, market opportunity, and team background.
What makes Giant Ventures different from other VC firms?
Giant Ventures emphasizes a transatlantic approach, leveraging its global network to provide strategic guidance and support to portfolio companies. The firm is also backed by notable investors, including Richard Branson's Virgin Group.
What is the typical check size for investments?
Giant Ventures typically leads investment rounds at the Pre-seed and Seed stages, with average check sizes around $6.6 million for seed rounds and approximately $30 million for Series A rounds.
What is the geographic scope of Giant Ventures?
The firm operates globally, with a strong focus on North America and Europe, reflecting its transatlantic operational model.
What kind of support do portfolio companies receive?
Giant Ventures provides strategic guidance, access to industry leaders, and connections to potential partners. The firm also runs an in-house venture-building program to assist founders in scaling their businesses effectively.
All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks, and brands does not imply endorsement.