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*
Partridge Timothy A

(Last) (First) (Middle)
C/O DOLBY LABORATORIES, INC.
100 POTRERO AVENUE

(Street)
SAN FRANCISCO CA 94103

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Dolby Laboratories, Inc. [ DLB ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Sr . V.P. & GM, Prof. Division
3. Date of Earliest Transaction (Month/Day/Year)
12/06/2005
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)
Code V Amount (A) or (D) Price
Class A Common Stock(1) 12/06/2005 C 1,000 A $0 2,000(2) D
Class A Common Stock 12/06/2005 S 1,000 D $18 1,000 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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Class B Common Stock $0(3) 12/06/2005 C 1,000 (3) (3) Class A Common Stock 1,000 $0 49,000 D
Explanation of Responses:
1. Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.
2. Includes 1,000 shares acquired under the Issuer's Employee Stock Purchse Plan on November 15, 2005.
3. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and has no expiration date.
Remarks:
***All of the sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.***
/s/ Alan G. Smith, Attorney-in-fact 12/07/2005
** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
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POWER OF ATTORNEY
The undersigned, as a Section 16 reporting person of Dolby Laboratories, Inc. (the "Company"),
hereby constitutes and appoints Mark S. Anderson, Phyllis Solomon, Alan G. Smith and Wilson
Sonsini Goodrich & Rosati, P.C., and each of them, the undersigned's true and lawful attorney-in-
fact to:
1.        complete and execute Forms ID, 3,4 and 5 and other forms and all amendments thereto as
such attorney-in-fact shall in his or her discretion determine to be required or advisable
pursuant to Section 16 of the Securities Exchange Act of 1934 (as amended) and the rules
and regulations promulgated thereunder, or any successor laws and regulations, as a
consequence of the undersigned's ownership, acquisition or disposition of securities of
the Company; and
2.        do all acts necessary in order to file such forms with the Securities and Exchange
Commission, any securities exchange or national association, the Company and such
other person or agency as the attorney-in-fact shall deem appropriate.
The undersigned hereby ratifies and confirms all that said attorneys-in-fact and agents shall do or
cause to be done by virtue hereof. The undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934 (as amended).
This Power of Attorney shall remain in full force and effect until the undersigned is no longer
required to file Forms ID, 3, 4 and 5 with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the undersigned in a signed writing
delivered to the Company and the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of
this 6th day of December, 2005.

Signature: /s/ Timothy A. Partridge
               Timothy A. Partridge