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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(Print or Type Responses)

1. Name and Address of Reporting Person * Buron Daniel   2. Issuer Name and Ticker or Trading Symbol Domtar CORP [UFS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior VP and CFO (Last) (First) (Middle) C/O DOMTAR CORPORATION, 395 DE MAISONNEUVE BOULEVARD WEST 3. Date of Earliest Transaction (Month/Day/Year) 02/16/2011 (Street) MONTREAL, A8 H3A 1L6 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 02/17/2011   M   2,416 A $ 75.98 (1) 9,825.4228 (2) D   Common Stock 02/17/2011   S   2,211 (3) D $ 93.36 (5) 7,614.4228 (2) D   Common Stock 02/16/2011   S   5,384 D $ 93.93 (6) 2,243.4228 (2) 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

Employee Stock Option (right to buy)

$ 75.98 (1)

02/17/2011

M

2,416 (4)

(4)

02/26/2012

Common Stock

2,416

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Buron Daniel C/O DOMTAR CORPORATION 395 DE MAISONNEUVE BOULEVARD WEST MONTREAL, A8 H3A 1L6			Senior VP and CFO

Signatures

Razvan L. Theodoru, Attorney-in-fact for Mr. Buron		02/18/2011
**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).
(1)	The price has been adjusted to reflect the reverse stock split for a ratio of 1-for-12 of the issuer's common shares, which became effective June 10, 2009; price converted from CDN$74.76 to US$ at the spot exchange rate of 1.0164 on the date of the transaction.
(2)	Includes restricted stock units and performance conditioned restricted stock units.
(3)	Shares sold to fund exercise price and withholding taxes due on the exercised stock options. The remaining shares are required to be held for at least 12 months.
(4)	The options vest in approximately equal annual installments on the first four anniversaries of the grant date and become exercisable if exercise conditions are satisfied. The options were granted on February 27, 2006 and 100 percent of the options were vested as of December 31, 2010.
(5)	This transaction was executed in multiple trades at prices ranging from CDN$91.81 to $91.87. The price reported above is the weighted average sale price, converted from CDN$ to US$ at the spot exchange rate of 1.0164. on the date of the transaction. The reporting person hereby undertakes to provide upon request to the SEC, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
(6)	The price was converted from CDN$92.57 to US$ at the spot exchange rate of 1.0147 on the date of the transaction.

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