ManTech Schedules First Quarter Fiscal Year 2018 Earnings Release and Conference Call for May 2, 2018

HERNDON, Va., March 26, 2018 -- ManTech International Corporation (Nasdaq:MANT) will issue its first quarter fiscal year 2018 earnings press release after close of market Wednesday, May 2, 2018. Management will discuss financial results in a conference call beginning at 5 p.m. Eastern.

Analysts may participate in the conference call by dialing (877) 638-9567 (domestic) or (253) 237-1032 (international) and entering pass code 6293764. The conference call will be webcast simultaneously to the public through a link on the Investor Relations section of the ManTech website (http://investor.mantech.com). A replay of the conference call will be available on the ManTech website approximately 2 hours after the conclusion of the call.

About ManTech International Corporation

ManTech provides mission-focused technology solutions and services for U.S defense, intelligence community and federal civilian agencies. Now in our 50^th year, we excel in full-spectrum cyber, data collection & analytics, enterprise IT, systems and software engineering solutions that support national and homeland security. Additional information on ManTech can be found at www.mantech.com.

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ManTech International Corporation

Investor Relations
Judy Bjornaas
Executive Vice President and Chief Financial Officer
(703) 218-8269
[email protected]

Media
Sue Cushing
VP Corporate Communications
(703) 814-8369
[email protected]