Quadrant Security Strategies (QSS) makes equity investments in innovative and emerging private companies that support US National Security. We utilize the breadth of our experience, extensive global network, and opportunistic investment philosophy to create significant value. We are driven by a commitment to service, integrity, accountability, and excellence.

What we do

QSS partners with visionary founders and business leaders addressing the most critical issues facing US National Security. QSS’s platform is rooted in an evolving global macro outlook, deep operating experience, dedicated deal structuring expertise, and a commitment to the legacy of our owners. We build an enduring partnership with leaders who share our values and commitment toward service. 

Driven by purpose and service to our community and country

Committed long term operational partner with entrepreneurial spirit and grit

Focused on success with integrity and humility

Patient and strategic investors obsessed with transparency

Accountable for our successes and failures


Driven by purpose and service to our community and country

Committed Long Term Operational Partner With Entrepreneurial Spirit And Grit



Focused On Success With Integrity and Humility

Patient And Strategic Investors Obsessed With Transparency





We are a diverse group of investment professionals with 80 years of combined government and capital markets experience in defense, aerospace, and intelligence. We put our own capital to work and focus on long term partnerships that result in companies achieving significant growth.

Alan Quasha

Mr. Alan Quasha founded Quadrant and is responsible for managing investments and overseeing the firm. He is also a Managing Partner and Co-Founder of Vanterra Capital. Mr. Quasha serves on numerous boards and is also on the investment committee of Trilantic Capital Partners Fund IV, and member of the General Partner and investment committee of Vanterra Transformative Energy & Materials Fund I, L.P. He is also the Co-Chairman of Carret Asset Management, LLC and Chairman of Brean Capital. During his extensive career, Mr. Quasha has invested in hundreds of companies in the U.S. and emerging markets. Many of these investments were restructuring and turnaround situations involving significant hands-on operating experience. He served as a Director of Richemont SA from 1988 until he joined the Board of Compagnie Financière Richemont SA (a world leading luxury goods company). He currently serves as a Director of The Fullbridge Program and the Ackerman Institute for the Family. He is also Chairman of HKN, Inc. (a publicly traded independent oil and gas company), and Chairman of the Brain Trauma Foundation. He was a past Director of American Express Funds and a former Governor of the American Stock Exchange. Mr. Quasha holds a bachelor’s degree from Harvard College, an MBA from Harvard Business School, a Master of Law degree from New York University Law School, and a Doctorate of Law from the Harvard Law School.

Ted Deinard

Mr. Deinard joined Quadrant in 2008 and is responsible for making investments and overseeing companies at the firm. Mr. Deinard holds Director level positions in multiple portfolio companies along with Executive level roles at certain times. Mr. Deinard is also President of QFMI Management, Inc., an alternative investment management firm, controlled by an affiliate of Quadrant. Previously, Mr. Deinard was a Director at Citigroup Global Markets. He holds a BA from Yale University

Norman Nigh

Mr. Nigh joined Quadrant in 2022 and is responsible for making investments and overseeing companies at the firm. Previously, Mr. Nigh spent four years in fixed income at Goldman Sachs focused on emerging market credit across LATAM, CEEMEA, and Asia. Prior to Goldman, Mr. Nigh spent ten years in US government service as a clandestine officer at the Central Intelligence Agency (CIA) and a senior advisor to the Department of Defense (DoD). Mr. Nigh holds degrees from the George Washington University, Yale University, and Vanderbilt University.