Nathaniel Horwitz

Nathaniel Horwitz is an Australian-American investor, entrepreneur, and investigative journalist. He is the co-founder of Mayday Health and Hunterbrook, where he is CEO. He was previously a partner at RA Capital Management.

Nathaniel Horwitz
Alma mater	Harvard University (AB)
Occupation(s)	Journalist Investor
Known for	Mayday Health Hunterbrook
Parents	Tony Horwitz (father) Geraldine Brooks (mother)

Early life and education

Horwitz was born in Washington D.C. to Tony Horwitz and Geraldine Brooks, the elder of two sons.^[1] The family split time between Sydney, Massachusetts, and Virginia.^[2][3]

He graduated from Harvard University with a degree in molecular and cellular biology.^[4] As a student, Horwitz wrote for The Harvard Crimson and worked on biotech startups.^[5][6][7][8] He published biomedical research in the scientific journal Cell.^[9][10] While at Harvard, Horwitz met Sam Koppelman, with whom he would later found Mayday Health and Hunterbrook.^[11][12]

Career

After graduating from Harvard, Horwitz joined RA Capital Management, a healthcare-focused investment firm.^[13] While at RA Capital, Horwitz launched biotech companies.^[14] He left RA Capital in 2023, before founding Hunterbrook.^[15] He has written in The Washington Post, The Atlantic, The Daily Beast, Town & Country, and The Australian Financial Review.^{[16][17][18][19][20]}

Mayday Health

In 2022, before the Supreme Court's decision in Dobbs v. Jackson overturned Roe v. Wade, Horwitz co-founded Mayday Health with Koppelman and Liv Raisner.^[21] The 501(c)(3) nonprofit educates on abortion access and advocated for laws to shield healthcare providers who send abortion medicine to people in states with abortion bans.^[22][23] Horwitz volunteered as CEO then moved to executive chair.^[24][25]

Hunterbrook

In 2023, Horwitz and Koppelman founded Hunterbrook, an investment fund, litigation firm, and investigative journalism outlet.^[26][27] Horwitz became CEO of both Hunterbrook Media and Hunterbrook Capital, which raised $100 million upon its launch.^[28][29] The company's name is partially derived from Horwitz's mother's last name.^[30]

Personal life

As of May 2024^[update] Horwitz lives in New York City.^[31]