As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 2/10/23  Dimensional Fund Advisors LP      SC 13G/A               1:17K  Mantech International Corp.                                
 9/28/22  Mantech International Corp.       15-12G      9/28/22    1:12K                                    Donnelley … Solutions/FA 
 9/16/22  Cook Bonnie                       4          Officer²    1:24K  Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/16/22  Tait Matthew A                    4          Officer²    1:13K  Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/16/22  Phillips Kevin M                  4          Dir.,Off.²  1:25K  Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/16/22  Bjornaas Judith L                 4          Officer²    1:19K  Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Armitage Richard L                4          Director²   1:5K   Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Campbell Barry G                  4          Director²   1:5K   Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Lamontagne Peter B                4          Director²   1:5K   Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Bush Mary K                       4          Director²   1:5K   Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Kerr Richard J                    4          Director²   1:5K   Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Minihan Kenneth A                 4          Director²   1:5K   Mantech International Corp.       Donnelley Fin’l S… 06/FA 
 9/15/22  Mantech International Corp.       S-8 POS     9/15/22    1:19K                                    Donnelley … Solutions/FA 
 9/15/22  Mantech International Corp.       S-8 POS     9/15/22    1:19K                                    Donnelley … Solutions/FA 
 9/14/22  Mantech International Corp.       8-K:1,2,3,5 9/14/22   13:268K                                   Donnelley … Solutions/FA 
 9/14/22  Nasdaq Stock Market LLC           25-NSE      9/14/22    2:3K   Mantech International Corp.                                
  9/8/22‡ Mantech International Corp.       8-K:5,8,9    9/7/22   11:165K                                   Donnelley … Solutions/FA 
 8/29/22‡ Mantech International Corp.       DEFA14A     8/26/22    1:81K                                    Donnelley … Solutions/FA 
 8/29/22‡ Mantech International Corp.       8-K:8       8/29/22   10:218K                                   Donnelley … Solutions/FA 
  8/5/22  Mantech International Corp.       DEFA14A                1:570K                                   Donnelley … Solutions/FA 

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:  /A
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
	15-12G	Certification of a Termination of Registration of a Class of Securities — Form 15.
	25-NSE	Notice by a Securities Exchange of the Removal from Listing and Registration of Matured, Redeemed or Retired Securities — Form 25.
	DEFA14A	Definitive Additional Proxy Soliciting Material — Schedule 14A.
	S-8 POS	Post-Effective Amendment of a Form S-8 Registration.
	SC 13G	Statement of Acquisition of Beneficial Ownership by a “Passive” Investor — Schedule 13G.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.