Sec Form 4 Filing - Mannon David C @ PARKER DRILLING CO /DE/ - 2012-04-30

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 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 Mannon David C 2. Issuer Name and Ticker or Trading Symbol PARKER DRILLING CO /DE/ [ PKD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Former CEO and President (Last) (First) (Middle) 5 GREENWAY PLAZA, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 04/30/2012 (Street) HOUSTON, TX77046 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 401K Common Stock 18,330.33 ( 1 ) I 401(k) Plan Common Stock 04/30/2012 M 28,188 ( 2 ) A $ 5.225 606,409 D Common Stock 04/30/2012 M 92,866 ( 3 ) A $ 5.17 699,275 D Common Stock 04/30/2012 M 55,511 ( 4 ) A $ 5.17 754,786 D Common Stock 04/30/2012 F 7,456 D $ 5.225 747,330 D Common Stock 04/30/2012 F 24,563 D $ 5.17 722,767 D Common Stock 04/30/2012 F 14,683 D $ 5.17 708,084 D

Table II - Derivative Securities Acqui red, 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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Restricted Stock Units $ 0 04/30/2012 M 28,188 04/30/2012 04/30/2012 Common Stock 28,188 $ 5.225 280,546 D Restricted Stock Units $ 0 04/30/2012 M 92,866 04/30/2012 04/30/2012 Common Stock 92,866 $ 5.17 187,680 D Restricted Stock Units $ 0 04/30/2012 M 55,511 04/30/2012 04/30/2012 Common Stock 55,511 $ 5.17 132,169 D Restricted Stock Units $ 0 04/30/2012 J 132,169 ( 5 ) 04/30/2012 04/30/2012 Common Stock 132,169 $ 5.17 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Mannon David C 5 GREENWAY PLAZA, SUITE 100 HOUSTON, TX77046 Former CEO and President Signatures David C. Mannon 05/02/2012 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Shares of PDK common stock in 401(k) as of April 30, 2012 ( 2 )Partial Vesting of March 1, 2010 Grant pursuant to Separation Agreement and Release between Parker Drilling Company and David C. Mannon dated March 5, 2012. ( 3 )Partial Vesting of July 23, 2010 Grant pursuant to Separation Agreement and Release between Parker Drilling Company and David C. Mannon dated March 5, 2012. ( 4 )Partial Vesting of March 11, 2011 Grant pursuant to Separation Agreement and Release between Parker Drilling Company and David C. Mannon dated March 5, 2012. ( 5 )Forfeiture as a result of resignation.

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* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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