Our Team


thomas d. lehrman, managing partner

Thomas D. Lehrman is Managing Partner of Haystack Partners. Mr. Lehrman was formerly co-founder and former Co-Chief Executive Officer of Gerson Lehrman Group (GLG) and has been involved as a founding or seed investor in numerous early stage ventures. Mr. Lehrman previously served as a Director of the Office of WMD Terrorism at the U.S. Department of State and as a member of the professional staff on the President’s WMD Commission. Earlier in his career, he worked as a financial analyst at Tiger Management. Mr. Lehrman has been a Board Member of several educational institutions including KIPP NYC Public Charter Schools, Brooklyn Excelsior Charter School, and Cold Spring Harbor Laboratory. Mr. Lehrman graduated from Duke University and Yale Law School and his writings have appeared in the Wall Street Journal and the New York Times.


Evan kaye, Partner

Evan focuses on developer tools, API's, imaging technologies and health IT. He previously co-founded Interscan Medical, and Boliven, an intellectual property search engine. Prior to that he was Managing Director at Gerson Lehrman Group in Healthcare Research, Product Development and Engineering. He is a licensed physician, having trained at University of Cape Town, and Tufts Medical Center. Evan is also a lifelong software developer, has been awarded numerous patents, and is a CFA charterholder. 



stephen schmalhofer, Partner

Stephen focuses on fintech, insurtech, sports tech, travel tech, and marketing and adtech. Prior to Haystack Partners, Stephen led business development as a member of the founding team at MasterStreet, a New York edtech startup. His early career includes a background in the capital markets and reinsurance at Swiss Re Capital Markets and Odyssey Re (a subsidiary of Fairfax Financial). Stephen received a B.A. in History from Yale University where he was an Ivy League champion football player. 



NOREEN HALL KILDUFF, office manager

Noreen is the office manager at Haystack Partners. She previously served in multiple roles at MasterStreet, Alta Investors, Boliven, and Gerson Lehrman Group.



Melanie is the Executive Assistant to the Managing Partner, Thomas Lehrman, and the team at Haystack Partners.  She previously worked as Head of Investor Relations and Executive Assistant at Zimmer Partners, LP and Zimmer Lucas Capital, LLC.  Prior to that she was Research Assistant at Bear Stearns in the Equity Research group.  She also worked at Sanford C. Bernstein & Co, LLC (now Alliance Bernstein, L.P.) in multiple roles.  Her early career includes the corporate real estate division at Citibank and the Americas region at Det Norske Veritas. Melanie graduated from Trinity College Dublin, Ireland with a B.A. and M.A. in Management Science & Information Systems Studies and has an additional undergraduate associate degree in Occupational Studies.  



Contact Us

515 Madison Avenue, Suite 1910
New York, NY 10022

(646) 883-4777