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§ Private Profile · San Francisco, CA, USA
Reproductive health diagnostics providing at-home, mail-in semen analysis for male reproductive health via a CLIA-certified lab.
Based in San Leandro, California, Fellow Health provides clinical-grade, mail-in semen analysis kits and diagnostic testing services for male reproductive health. The company operates a CLIA-certified laboratory that processes more than 400 samples daily and has delivered over 100,000 patient test results to date. Fellow Health distributes its testing kits directly to consumers and through partnerships with a network of over 1,800 urology and fertility clinics across the United States. The enterprise has raised $48 million in total venture capital funding, which includes a $24 million Series B round backed by institutional investors such as 5AM Ventures, Labcorp Venture Fund, Forest Road, and Mantis Venture Capital. Currently projecting 40% annual revenue growth, the organization is led by Chief Executive Officer Brian Hogan and Independent Chairman Paul Kappelman. Fellow Health was founded in 2018 by William Matthews.
Fellow Health has raised $54.5M across 3 funding rounds.
Fellow Health has raised $54.5M in total across 3 funding rounds.
Fellow Health is a technology-enabled company specializing in male reproductive health, offering peer-reviewed, mail-in semen analysis and fertility testing kits that provide clinical-grade results from home.[4][5] It serves patients seeking convenient fertility and post-vasectomy testing as well as healthcare providers like clinics and urologists, solving the problem of archaic, clinic-bound testing methods that lack privacy, speed, and accessibility.[4][5] The company partners with over 1,800 clinical practices, processes 400+ patient samples daily through its CLIA-certified lab, and demonstrates strong growth with 40% year-over-year revenue increase and a path to profitability in its fertility segment by 2026.[4] In July 2025, it closed a $24 million Series B round led by 5AM Ventures, bringing total funding to $48 million.[4]
Fellow Health was founded in 2018 in San Leandro, California, by a team focused on modernizing male reproductive care, with Brian Hogan as CEO.[4] The idea emerged from recognizing the rising demand for male fertility services amid outdated, inconvenient clinic-based testing, aiming to deliver privacy, convenience, and timely results via mail-in kits.[4] Early traction came from securing peer-reviewed validation data—making it the only such mail-in fertility test—and partnerships with top practices like UCSF, where providers report reduced call volumes and high patient satisfaction with fast, detailed results.[4][5] Pivotal funding includes a Series A, follow-on rounds, and the recent Series B from investors like 5AM Ventures, Labcorp Venture Fund, and Genoa Ventures, fueling lab expansion and product scaling.[4]
Fellow Health rides the wave of at-home diagnostics and telehealth personalization, capitalizing on post-pandemic demand for convenient, direct-to-consumer health testing amid rising male infertility awareness (affecting ~40% of couples).[4] Timing aligns with healthcare shifts toward patient empowerment and provider efficiency, as legacy systems strain under volume—Fellow reduces burdens while enabling virtual care scalability.[4][5] Market forces like AI-driven health tech and investor interest in life sciences (e.g., 5AM Ventures' focus on redefining care standards) favor it, positioning Fellow to influence reproductive health norms by standardizing mail-in protocols and partnering with labs like Labcorp.[4] This expands access, particularly for underserved groups, and sets precedents for tech in sensitive diagnostics.
Fellow Health is poised to dominate male reproductive testing with its funding-fueled expansion, targeting broader offerings like additional hormone panels and global reach while hitting fertility profitability in 2026.[4] Trends in personalized at-home health, AI analytics for diagnostics, and value-based care will accelerate its growth, potentially capturing a larger share of the $5B+ fertility market. Its influence may evolve by inspiring similar models in women's health or chronic care, transforming "archaic" testing into seamless standards and delivering universal gains in reproductive access.[1][4] This builds on its core promise: making specialized healthcare easy, affordable, and individualized.
Fellow Health has raised $54.5M in total across 3 funding rounds.
Fellow Health's investors include 5AM Ventures, Alta Partners, Kiersten Stead, Lainy Painter, Felicis Ventures, Formentera, Garage Technology Ventures, Inovia Capital, Silicon Valley Bank, Karamdeep Nijjar.
Fellow Health has raised $54.5M across 3 funding rounds. Most recently, it raised $24.0M Series B in July 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Jul 1, 2025 | $24M Series B | — | 5AM Ventures, Alta Partners, Kiersten Stead | Announced |
| Jul 1, 2022 | $24M Series A | Lainy Painter | 5AM Ventures, Alta Partners, Kiersten Stead, Felicis Ventures, Formentera, Garage Technology Ventures, Inovia Capital, Silicon Valley Bank | Announced |
| Dec 3, 2019 | $6.5M Seed | Karamdeep Nijjar | — | Announced |