Sec Form 4 Filing - MOORE JOHN A JR @ MANTECH INTERNATIONAL CORP - 2004-03-09

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person MOORE JOHN A JR 2. Issuer Name and Ticker or Trading Symbol MANTECH INTERNATIONAL CORP [ MANT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Executive Vice President (Last) (First) (Middle) C/O MANTECH INTERNATIONAL CORPORATION, 12015 LEE JACKSON HIGHWAY 3. Date of Earliest Transaction (MM/DD/YY) 03/09/2004 (Street) FAIRFAX, VA22033 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 03/09/2004 A 80 A 698 I By the ManTech International Corporation Employee Stock Ownership Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Incentive Stock Option (right to buy) $ 16 02/06/2003( 2 ) 02/05/2012 Class A Common Stock 12,500 12,500 D Non-Qualified Stock Option (right to buy) $ 16 02/06/2003( 3 ) 02/05/2012 Class A Common Stock 20,834 20,834 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MOORE JOHN A JR C/O MANTECH INTERNATIONAL CORPORATION 12015 LEE JACKSON HIGHWAY FAIRFAX, VA22033 Executive Vice President Signatures /s/ John A. Moore, Jr. 03/11/2004 Signature of Reporting Person Date

Explanation of Responses:

( 1 )None, this grant of restricted stock was made pursuant to the ManTech International Corporation Employee Stock Ownership Plan covering the period of calendar year 2003. ( 2 )This incentive stock option was granted on 2/6/02 with one-third of the total grant vesting on each of the first two anniversaries of the grant date and the final one-third on 12/31/04, provided, however, the option will vest in full if the reporting person's employment is terminated by the company prior to 12/31/04 for any reason other than "cause" as defined in the First Amendment to Retention Agreement. ( 3 )This non-qualified stock option was granted on 2/6/02 with one-third of the total grant vesting on each of the first two anniversaries of the grant date and the final one-third on 12/31/04, provided, however, the option will vest in full if the reporting person's employment is terminated by the company prior to 12/31/04 for any reason other than "cause" as defined in the First Amendment to Retention Agreement.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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