World’s Leading Supplier of High-Performance Sensors and Systems for Aerospace and Defense Applications Continues under American Ownership

CLEVELAND, March 26, 2019 – Resilience Capital Partners, a private equity firm that invests in middle-market companies, announced it has acquired Concord, California-headquartered Systron Donner Inertial. As the world’s leading supplier of quartz microelectromechanical systems (QMEMS) used in inertial sensing products that provide precision guidance, navigation and locational solutions, Systron Donner develops products that have been used in everything from business aircraft to fighter jets to the MARS Rover.

“Systron Donner is an important player in an industry that is critical to America’s future economic prosperity, leadership in aviation and national security,” said Steven H. Rosen, co-chief executive officer of Resilience Capital Partners. “Technology and innovation leadership is important for our nation’s future, and Systron Donner has been at the forefront of developing high-performing, made-in-America inertial sensors and systems for more than 50 years.”

Systron Donner’s QMEMS technologies are used in gyroscopes, accelerometers, inertial measurement units and inertial navigation system/GPS products that provide highly precise and reliable stabilization, geo-location, guidance, navigation and flight control solutions for aerospace, marine and land vehicles and systems.

Among the leading users of Systron Donner products are a leading defense contractor; a premier aerospace company; a civil and defense aerospace manufacturer; a leader in helicopter production; and a naval research agency. Systron Donner’s customers have frequently honored it for superior performance; in 2018, the firm received a leading defense contractor’s Supplier Excellence Award for the second consecutive time.

The future for such sensing products is highly promising. The market for inertial navigation systems alone is projected to grow from $9.54 billion in 2017 to $12.26 billion by 2022, a compound annual growth rate of 5.15 percent, according to an analysis by the business forecasting firm ResearchAndMarkets.

“Systron Donner’s proprietary technologies, the increasing size of the inertial sensing market and the company’s long history of relationships with a roster of blue-chip customers make this a company with strong potential,” said Rosen. “We look forward to working with the Systron Donner team to maximize this opportunity.”

The continued domestic development and manufacture of products for the aerospace and defense industries is seen as vital, given fears that a decline in American technology leadership could impair national security. Recent analyses, including a whitepaper authored by experts from the Institute for National Strategic Studies and a study prepared by a team assembled by the Office of the Director of National Intelligence and the U.S. Department of Homeland Security, have underscored these concerns.

An explanatory video about Systron Donner’s products is available on YouTube at

Terms of the transaction were not disclosed.


About Resilience Capital Partners

Headquartered in Cleveland, Ohio, Resilience invests in niche-oriented manufacturing, value added distribution and business service companies with sustainable market positions and a clear path to cash flow improvement. Resilience targets platform businesses with $25 million to $250 million in revenues across a broad range of industries where it can improve a company’s operations, competitive positioning and profitability. Resilience manages in excess of $685 million for its global investor base which includes pension funds, insurance companies, foundations and endowments, fund of funds and family offices. For more information, please visit



Nicholas Parmelee
The Hubbell Group, Inc.
(781) 878-8882