U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 4 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 [ ] Check this box if no longer subject of Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). ================================================================================ 1. Name and Address of Reporting Person* Mandell Marshall S. -------------------------------------------------------------------------------- (Last) (First) (Middle) 11710 Plaza America Drive -------------------------------------------------------------------------------- (Street) Reston VA 20190 -------------------------------------------------------------------------------- (City) (State) (Zip) ================================================================================ 2. Issuer Name and Ticker or Trading Symbol DynCorp ================================================================================ 3. IRS or Social Security Number of Reporting Person (Voluntary) ================================================================================ 4. Statement for Month/Year 09/2001 ================================================================================ 5. If Amendment, Date of Original (Month/Year) ================================================================================ 6. Relationship of Reporting Person to Issuer (Check all applicable) [ ] Director [ ] 10% Owner [X ] Officer (give title below) [ ] Other (specify below) Senior Vice President, Corporate Development ================================================================================ 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 ================================================================================

* If the Form is filed by more than one Reporting Person, see Instruction 4(b)(v). Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. Page 1 of 2 FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================

Explanation of Responses: (1) Options vest at varying times /s/ M. S. Mandell September 25, 2001 --------------------------------------------- ----------------------- **Signature of Reporting Person Date by: /s/ H. M. Hougen --------------------------------------------- H. M. Hougen, Attorney-in-fact ** 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 provided is insufficient, see Instruction 6 for procedures. Alternatively, this Form is permitted to be submitted to the Commission in electronic format at the option of the reporting person pursuant to ruke 101(b)(4) of Regulatiob S-T. Page 2 of 2

MANDELL MARSHALL S 4