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 OF SECURITIES 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 * ROSS TIMOTHY   2. Issuer Name and Ticker or Trading Symbol COMMUNITY BANK SYSTEM INC [CBU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Vice Pres, Bus. Development (Last) (First) (Middle) 6635 KIRKVILLE ROAD, P.O. BOX 178 3. Date of Earliest Transaction (Month/Day/Year) 03/10/2006 (Street) EAST SYRACUSE, NY 13057 4. If Amendment, Date 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 (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 03/10/2006   M   30,000 A $ 12.4165 37,400 D   Common Stock 03/10/2006   M   4,500 A $ 6.625 41,900 D   Common Stock 03/10/2006   M   5,500 A $ 5.7291 47,400 D   Common Stock 03/10/2006   S   10,000 A $ 19.0505 37,400 D   Common Stock 03/10/2006   S   15,000 A $ 18.8655 22,400 D   Common Stock 03/10/2006   S   15,000 A $ 19.0666 7,400 D

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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 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

Stock Option

$ 12.4165

03/10/2006

M

30,000

11/02/1999

11/02/2009

Common Stock

30,000

$ 12.4165

0

D

Stock Option

$ 6.625

03/10/2006

M

4,500

11/10/1997

11/10/2007

Common Stock

4,500

$ 6.625

0

D

Stock Option

$ 5.7291

03/10/2006

M

5,500

11/19/1998

11/19/2008

Common Stock

5,500

$ 5.7291

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ROSS TIMOTHY 6635 KIRKVILLE ROAD P.O. BOX 178 EAST SYRACUSE, NY 13057			Vice Pres, Bus. Development

Signatures

David M. Ferrara, as attorney-in-fact, pursuant to a power of attorney		03/13/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	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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