US family offices

Today, we selected 20 active US family offices from our database, investing in startups.  

Our team reviewed, checked, and enriched the list with the necessary data.

(The first 10 are free for all subscribers, the last 10 are open to our premium subscribers.)

Here goes:

• 4S Bay Partners — Highland Park-based 4S Bay Partners is a single-family office committed to eliminating prejudice and inequities in society. The firm deploys creative private capital to create economic opportunities and amplify storytelling for and about marginalized communities. By partnering with local stakeholders, 4S Bay aligns its investment strategy with social impact, fostering inclusivity and long-term community empowerment.

• 42.Ventures — Salt Lake City-based 42.Ventures is a family office focused on growing B2B, cloud-based software companies with a vertical market orientation. The firm partners with entrepreneurs to scale operations and accelerate growth. With its expertise in B2B software, 42.Ventures provides strategic support and flexible capital to help companies achieve sustainable expansion.

• 444 Capital — San Mateo-based 444 Capital is a family office investment fund dedicated to supporting women- and minority-led startups. The firm invests in fintech, healthcare, education, insuretech, online marketplaces, and B2B and B2C sectors. By backing diverse and inclusive founders, 444 Capital aligns capital with innovation and equity, promoting broader participation in the entrepreneurial ecosystem.

• Alturus Capital — Dallas-based Alturus Capital is a family office equity partner supporting companies as they enter their next growth phase. With a sector-agnostic mandate, the firm provides flexible capital and hands-on partnership to help businesses scale. Alturus leverages entrepreneurial experience to identify opportunities and add value while aligning with management teams for long-term success.

• Arcturus Venture — Scottsdale-based Arcturus Venture is a single-family office founded in 2017 by entrepreneur Andrew Leto. Focused on seed and early-stage investments, the firm specializes in transportation, logistics, and supply chain technology. Arcturus combines capital with sector expertise, offering guidance and relationships to accelerate startup growth and help founders scale disruptive businesses.

• Armonia — Greenwich-based Armonia is a family office investing in sustainable and impact-driven funds, companies, and projects. With a focus on agriculture and agtech, the firm supports regenerative practices that enhance both environmental and economic systems. Armonia takes a long-term approach, aligning its capital with global sustainability goals.

• B.I.G. Capital — Weston-based B.I.G. Capital is a family office investment firm acquiring software companies. With a long-term strategy, the firm emphasizes sustainable growth and operational support. By leveraging resources and expertise, B.I.G. Capital helps its portfolio companies scale responsibly while maintaining a commitment to durable value creation.

• BK Growth — Kirtland Hills-based BK Growth is a family office investing in small businesses with significant growth potential. The firm focuses on service and software companies in expanding industries. Beyond capital, BK Growth emphasizes partnerships with strong entrepreneurs, backing both people and ideas with long-term conviction.

• Bodley Group — St. Louis-based Bodley Group is a family office investing in seed and growth opportunities. The firm targets companies with proprietary technology, scalable customer acquisition strategies, and potential for rapid growth. Bodley emphasizes backing visionary founders, providing capital and support to help them realize bold futures.

• Bryant Stibel Investments — Malibu-based Bryant Stibel Investments is the family office venture platform founded by Kobe Bryant and Jeff Stibel. The firm invests at the intersection of technology, media, and data. With a focus on innovation and convergence, Bryant Stibel leverages capital and expertise to help entrepreneurs scale impactful businesses.

That’s all for today. Have a great day!

Tzakhi

Founder of InvestorsLists.VC and Meet.Capital 

PS: Want more? Save 25% on our yearly plan + full investor database. Get it now→

Special offers and discounts from recommended partners:

1. The investor message templates that helped raise millions by Meet.Capital →

2. The best equity crowdfunding platform: ​Wefunder​ (save up to $10,000 on platform fees with this link)

3. The best design services for your pitch deck: ​DesignForDecks​ (use promo code CHOSEN15 to save 15%)

4. Learn to unlock capital from family offices with ​The Glassbox​ (Save 10% with promo code Meetcapital2025)