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

(Print or Type Responses)		   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		  
OMB APPROVAL
OMB Number:        3235-0287
Expires: January 31, 2005
Estimated average burden hours per response .... 0.5
1.   Name and Address of Reporting Person*   2.   Issuer Name and Ticker or Trading Symbol   6.   Relationship of Reporting Person(s) to Issuer
(Check all applicable)
    Marsh   R.   Thomas       SI International, Inc. (SINT)         X   Director            10% Owner
 
           
    (Last)   (First)   (Middle)   3.   I.R.S. Identification Number of Reporting Person, if an entity (Voluntary)   4.   Statement for
Month/Day/Year		                Officer
        (give title below)		            Other
        (specify below)
    8484 Westpark Drive, Suite 630               11/22/02            
 
 
     
(Street)           5.   If Amendment, Date of Original (Month/Year)   7.   Individual or Joint/Group Filing
(Check Applicable Line)
    X     Form filed by One Reporting Person
             Form filed by More than
    McLean   VA   22102                                   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
(Month/Day/Year)		   2A.   Deemed Execution Date, if any
(Month/Day/Year)		   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		                        
    Common Stock       11/22/02               J (1)           59   A           8,787       D        
                                                                         
                                                                         
                                                                         
                                                                         
                                                                         
                                                                         

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).

Potential persons who are to respond to the collection of information contained in this form are not required to respond
unless the form displays a currently valid OMB control number.

(Over)
SEC 1474 (3-00)

FORM 4 (continued)   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
(Month/Day/Year)		   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
(Month/Day/Year)
                       
 
                           
Code		  
V		      
(A)		  
(D)		       Date
Exercisable		   Expiration
Date
                                                         
                                                         
                                                         
                                                         
                                                         
                                                         
                                                         
                                                         
                                                         
                                                         
                                                         
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 at End of Month
(Instr. 4)		   10.   Ownership Form of Derivative Security Direct (D) or Indirect (I)
(Instr. 4)		   11.   Nature of Indirect Beneficial Ownership
(Instr. 4)
   
                               
   
Title		   Amount or Number of Shares                                
                                         
                                         
                                         
                                         
                                         
                                         
                                         
                                         
                                         
                                         
                                         

Explanation of Responses:
(1) Pro rata distribution of shares of common stock held by SI International, L.L.C. to unitholders of SI International, L.L.C.

/s/ R. Thomas Marsh   11/22/02
**Signature of Reporting Person		  
Date

**
 
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.

Potential persons who are to respond to the collection of information contained in this form are not
required to respond Page 2 unless the form displays a currently valid OMB Number.