Ms. Oxenstierna, Managing Director, has over 25 years of experience in the aerospace and defense industry, government policy arena and financial services sector. Tess holds deep domain knowledge and transaction advisory skills, especially in the high growth markets of Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance (C4ISR), unmanned vehicles systems, cybersecurity and strike warfare. 

Prior to joining Headwaters, Tess founded the Aerospace and Defense practice at  a middle market boutique investment bank, focusing on private and public corporate clients with diverse products such as command and control software for aerial drones, satellite-based force tracking systems and electronic warfare devices used in Afghanistan and Iraq. She was Global Head of Equities Strategy at Lehman Brothers, responsible for strategy development leveraging competitive intelligence, market analysis and acquisitions across Americas, Europe and Asia. Transactions included investments in stock exchanges, a NYSE specialist market-maker and international broker dealers. Tess was also Director of Corporate Development and Strategy at Raytheon, with deal team transactions valued at over $3.4 billion in sensor automation/information synthesis, geospatial mission support, network forensics, interoperable communications for homeland security, and commercial aviation/life cycle support.

Prior to these transactional roles, Tess worked in the Reagan White House, U.S. Departments of State and Energy, and NATO Headquarters, complementing her combat operational experience as a Commander in the U.S. Navy Reserve.   A recognized industry expert, she speaks at leading industry conferences (e.g. Thompson Reuters A&D Summit, Int’l AUVSI Conferences) and has been interviewed on ABC’s Government Matters, Defense News, Homeland Security Wire and Private Equity Hub.

Tess holds a Ph.D. in War Studies from King’s College London, M.A. from the Fletcher and Diplomacy, B.A. in International Relations from UCLA, and studied corporate finance at Harvard Business School.  

Track Records
M&A
has been acquired by
General Dynamics Mission Systems
We acted as advisor to the seller

Announced

11/27/2017

Industry

Aerospace, Defense, Government & Security
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M&A
Solidyn Solutions Inc
has been acquired by
Polaris Alpha
a portfolio company of
Arlington Capital Advisors
We acted as sole advisor to the seller

Announced

10/03/2017

Industry

Aerospace, Defense, Government & Security
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M&A
Neya Systems LLC
Has been acquired by
(ARA) Applied Research Associates, Inc.
We acted as sole advisor to the seller

Announced

05/03/2017

Industry

Aerospace, Defense, Government & Security
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M&A
CES
Has been acquired by
Mercury Systems
We acted as sole advisor to the seller

Announced

11/03/2016

Industry

Aerospace, Defense, Government & Security
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M&A
Has divested its subsidiary
Deposition Sciences Inc
To
We acted as sole advisor to the seller

Announced

07/12/2014

Industry

Aerospace, Defense, Government & Security
Industrial Technology
Industrials / Manufacturing
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M&A
Has been acquired by
We acted as sole advisor to the seller

Announced

02/13/2013

Industry

Aerospace, Defense, Government & Security
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