ManTech International

MANTECH was founded in New Jersey by Franc Wertheimer and George J. Pedersen in 1968. The company name "MANTECH" is a portmanteau formed through the combination of "management" and "technology."

The company went public through an initial public offering in February 2002.

MANTECH customers include the United States Intelligence Community, Departments of Defense, State, Homeland Security, Energy, Justice, Veterans Affairs, Health and Human Services, and the Space Community. The firm specializes in cybersecurity; software and systems development; enterprise information technology; intelligence & counterintelligence; command, control, communications, computers, intelligence, surveillance, and reconnaissance (C4ISR); program protection and mission assurance; systems engineering; supply chain management and logistics; test and evaluation (T&E); training; and management consulting. The firm has supported the telecommunications use in Operation Iraqi Freedom. MANTECH's corporate headquarters is located in Herndon, Virginia It also has offices in 19 U.S. states, and employees positioned in over 20 countries. The firm has over 7,000 employees and supports more than 50 U.S. government agencies and commercial customers on more than 1,000 contracts. Revenues increased from $431 million in 2001 to $1.96 billion in 2018.

In May 2022, MANTECH announced their agreement to be acquired by the private equity firm The Carlyle Group. The deal worth $3.9 billion, will include the firm to buyout shares at $96 a share, representing a 32% premium to MANTECH's closing price on February 2, 2022.

On November 1, 2021, MANTECH announced that it has signed a definitive agreement to acquire @Gryphon Technologies, a systems engineering firm, for $350 million. The acquisition bolstered the company’s capabilities in models-based systems engineering, cyber security, strategic communication, readiness and sustainment support.

On April 1, 2019, MANTECH completed the acquisition of Kforce Government Solutions (KGS) for $115 million.

On October 2, 2017, MANTECH completed the acquisition of InfoZen, an IT service company.

On December 19, 2016, MANTECH acquired Edaptive Systems LLC, a provider of IT primarily to federal health agencies, with a focus on the Centers for Medicare and Medicaid Services.