Tess Oxenstierna headshot

Tess Oxenstierna

Managing Director

Tess Oxenstierna, Managing Director at Capstone Partners, 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), Air / Land / Sea / Space Systems, Electronic Warfare, Unmanned Autonomous Systems / Robotics. Prior to joining Capstone Partners, 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 was honored with deal awards, such as M&A’s Most Influential Women 2021, M&A Atlas Awards for Industrials 2019, and M&A Advisor, Corporate / Strategic Deal of the Year 2018. She has also spoken at Thompson Reuters A&D Summit, Int’l AUVSI Conferences, New York Capital Roundtable and on a tv interview on ABC’s Government Matters. She serves on the Board of the U.S. Navy League – CT Council.

Tess’s Transaction Highlights

Industry Coverage