Genstar Capital, a private equity firm focused on investments in segments of the financial services, healthcare, software and industrials industries, has made a significant investment in Jet Support Services Inc., an aircraft maintenance support and financial tools company for the business aviation industry.

JSSI delivers hourly cost maintenance (HCM) programs to the business aviation industry. JSSI also offers maintenance tracking software as a result of two acquisitions in the past 18 months: JSSI Parts & Leasing and Conklin & de Decker. Genstar is partnering with existing investors GTCR, the Book family and JSSI’s management team to support the company’s growth.

“My team and I are appreciative for the ongoing collaboration with GTCR, which has been a fun and rewarding partnership since 2020,” says Neil Book, chief executive officer of JSSI. “As we start this next chapter, Genstar is an ideal partner, with a tremendous track record, to support our ambitious growth plan.”

Simpson Thacher & Bartlett LLP served as legal counsel to Genstar. Kirkland & Ellis LLP served as legal counsel to GTCR.