SEC FORM 4

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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

1. Name and Address of Reporting Person^*

ANTLE S BRADFORD

(Last)

(First)

(Middle)

C/O SI INTERNATIONAL, INC.

12012 SUNSET HILLS ROAD, SUITE 800

(Street)

RESTON

20190

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
SI INTERNATIONAL INC [ SINT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
04/03/2006

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

6. 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)		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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock⁽¹⁾	04/03/2006		M		1,000	A	$34.9	27,676	D
Common Stock⁽¹⁾	04/03/2006		S		1,000	D	$34.9	26,676	D
Common Stock⁽¹⁾	04/03/2006		M		2	A	$34.91	26,678	D
Common Stock⁽¹⁾	04/03/2006		S		2	D	$34.91	26,676	D
Common Stock⁽¹⁾	04/03/2006		M		265	A	$34.93	26,941	D
Common Stock⁽¹⁾	04/03/2006		S		265	D	$34.93	26,676	D
Common Stock⁽¹⁾	04/03/2006		M		200	A	$34.94	26,876	D
Common Stock⁽¹⁾	04/03/2006		S		200	D	$34.94	26,676	D
Common Stock⁽¹⁾	04/03/2006		M		401	A	$34.95	27,077	D
Common Stock⁽¹⁾	04/03/2006		S		401	D	$34.95	26,676	D
Common Stock⁽¹⁾	04/03/2006		M		66	A	$34.96	26,742	D
Common Stock⁽¹⁾	04/03/2006		S		66	D	$34.96	26,676	D
Common Stock⁽¹⁾	04/03/2006		M		66	A	$34.97	26,742	D
Common Stock⁽¹⁾	04/03/2006		S		66	D	$34.97	26,676	D
Common Stock⁽¹⁾	04/04/2006		M		200	A	$34	26,876	D
Common Stock⁽¹⁾	04/04/2006		S		200	D	$34	26,676	D
Common Stock⁽¹⁾	04/04/2006		M		200	A	$34.01	26,876	D
Common Stock⁽¹⁾	04/04/2006		S		200	D	$34.01	26,676	D
Common Stock⁽¹⁾	04/04/2006		M		800	A	$34.03	27,476	D
Common Stock⁽¹⁾	04/04/2006		S		800	D	$34.03	26,676	D
Common Stock⁽¹⁾	04/04/2006		M		300	A	$34.05	26,976	D
Common Stock⁽¹⁾	04/04/2006		S		300	D	$34.05	26,676	D
Common Stock⁽¹⁾	04/04/2006		M		500	A	$34.1	27,176	D
Common Stock⁽¹⁾	04/04/2006		S		500	D	$34.1	26,676	D
Common Stock⁽¹⁾	04/05/2006		M		1,500	A	$34	28,176	D
Common Stock⁽¹⁾	04/05/2006		S		1,500	D	$34	26,676	D
Common Stock⁽¹⁾	04/05/2006		M		400	A	$34.01	27,076	D
Common Stock⁽¹⁾	04/05/2006		S		400	D	$34.01	26,676	D
Common Stock⁽¹⁾	04/05/2006		M		100	A	$34.03	26,776	D
Common Stock⁽¹⁾	04/05/2006		S		100	D	$34.03	26,676	D

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)	3A. Deemed Execution Date, if any (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)		7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			1,000	12/31/2005	12/31/2011	Common Stock	1,000	$34.9	62,471⁽⁴⁾	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			2	12/31/2005	12/31/2011	Common Stock	2	$34.91	62,469	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			265	12/31/2005	12/31/2011	Common Stock	265	$34.93	62,204	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			200	12/31/2005	12/31/2011	Common Stock	200	$34.94	62,004	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			401	12/31/2005	12/31/2011	Common Stock	401	$34.95	61,603	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			66	12/31/2005	12/31/2011	Common Stock	66	$34.96	61,537	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/03/2006		M			66	12/31/2005	12/31/2011	Common Stock	66	$34.97	61,471	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/04/2006		M			200	12/31/2005	12/31/2011	Common Stock	200	$34	61,271	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/04/2006		M			200	12/31/2005	12/31/2011	Common Stock	200	$34.01	61,071	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/04/2006		M			800	12/31/2005	12/31/2011	Common Stock	800	$34.03	60,271	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/04/2006		M			300	12/31/2005	12/31/2011	Common Stock	300	$34.05	59,971	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/04/2006		M			500	12/31/2005	12/31/2011	Common Stock	500	$34.1	59,571	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/05/2006		M			1,500	12/31/2005	12/31/2011	Common Stock	1,500	$34	57,971	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/05/2006		M			400	12/31/2005	12/31/2011	Common Stock	400	$34.01	57,571	D
Stock Option (Right to Buy)⁽²⁾	$14⁽³⁾	04/05/2006		M			100	12/31/2005	12/31/2011	Common Stock	100	$34.03	57,471	D

Explanation of Responses:

1. Sale of shares received upon exercise of options pursuant to 10b5-1 trading plan

2. Options were exercised pursuant to a 10b5-1 trading plan.

3. Exercise price of the stock options.

4. This entry corrects prior Forms 4. The total vested and exercisable stock options for this stock option, immediately prior to this exercise and sale, is 63,471. The total vested and exercisable stock option grants held by Mr. Antle as of the period immediately prior to this filing are 163,821 shares, which include the 63,471 identified above plus 45 shares issued pursuant to a separate 11/11/2002 stock option grant, 14,780 shares issued pursuant to a1/15/2004 stock option grant, 20,000 shares issued pursuant to a 1/15/2004 stock option grant, 25 shares issued on a 7/9/2004 stock option grant, 15,500 shares issued pursuant to a 2/3/2005 stock option grant, and 50,000 shares issued pursuant to a 10/6/2006 stock option grant.

	/s/ James E. Daniel by Power of Attorney	04/05/2006
	** Signature of Reporting Person	Date
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).
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