SEC Form 4

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(f) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Vaughan, Walter W.

(Last) (First) (Middle)

c/o ManTech International Corporation

12015 Lee Jackson Highway

(Street)

Fairfax, VA 22033

(City) (State) (Zip)

2. Issuer Name
and Ticker or Trading Symbol

ManTech International Corporation (

3. I.R.S. Identification
    Number of Reporting
    Person, if an entity
    (voluntary)

4. Statement for
Month/Day/Year)

09/03/2002

5. If Amendment,
Date of Original
(Month/Day/Year)

6. Relationship of Reporting Person(s) to Issuer

(Check all applicable)

X Director 10% Owner

Officer (give title below) Other (specify below)

Description

7. Individual or Joint/Group
Filing (Check Applicable Line)

X Form filed by One Reporting Person

Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1. Title of Security (Instr. 3)	2.Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8) Code / V	4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4, and 5) Amount / A/D / Price	5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Owner- ship Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	09/03/2002		S /	20,000 / D / $24.0533	24,266	I	By IRA

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. Conver- sion or Exercise Price of Deri- vative Security	3. Transaction Date (Month/ Day/ Year)	3A. Deemed Execution Date, if any (Month/ Day/ Year)	4. Transaction Code (Instr.8) Code / V	5. Number of Derivative Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) (A) or (D)	6. Date Exercisable(DE) and Expiration Date(ED) (Month/Day/Year) (DE) / (ED)	7. Title and Amount of Underlying Securities (Instr. 3 and 4) Title / Amount or Number of Shares	8. Price of Derivative Security (Instr.5)	9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr.4)	10. Owner- ship Form of Deriv- ative Securities Beneficially Owned at End of Month (Instr.4)	11. Nature of Indirect Beneficial Ownership (Instr.4)
	$			/		/	/	$

Explanation of Responses:

By:
/s/ Walter W. Vaughan 09/05/2002
** Signature of Reporting Person Date

SEC 1474 (8-02)

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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure

VAUGHAN WALTER W 4