Edgar Filing: DIAMOND OFFSHORE DRILLING INC

Ownership Submission

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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3235-0287

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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

WILLIAMS DAVID W

2. Issuer Name and Ticker or Trading Symbol
DIAMOND OFFSHORE DRILLING INC [DO]

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

_____ Director	_____ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
Executive Vice President

(Last)

(First)

(Middle)

15415 KATY FREEWAY, SUITE 100

3. Date of Earliest Transaction (Month/Day/Year)
08/22/2006

(Street)

HOUSTON, TX 77094

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)
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	08/22/2006		M		486	A	$ 29.33	486	D
Common Stock	08/22/2006		S		486	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		938	A	$ 29.2	938	D
Common Stock	08/22/2006		S		938	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		938	A	$ 19.88	938	D
Common Stock	08/22/2006		S		938	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		938	A	$ 21.93	938	D
Common Stock	08/22/2006		S		938	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 45.77	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 53.6	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 61.9	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 69.38	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 19.78	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 21.23	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 19.08	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D
Common Stock	08/22/2006		M		937	A	$ 20.77	937	D
Common Stock	08/22/2006		S		937	D	$ 73.9386	0	D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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 control number.		SEC 1474 (9-02)

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

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (right to buy)

$ 29.33

08/22/2006

486

04/15/2003⁽¹⁾

04/15/2012

Common Stock

486

$ 0

Stock Option (right to buy)

$ 29.2

08/22/2006

938

04/15/2003⁽¹⁾

07/01/2012

Common Stock

938

$ 0

Stock Option (right to buy)

$ 19.88

08/22/2006

938

04/15/2003⁽¹⁾

10/01/2012

Common Stock

938

$ 0

Stock Option (right to buy)

$ 21.93

08/22/2006

938

04/15/2003⁽¹⁾

12/31/2012

Common Stock

938

$ 0

Stock Option (right to buy)

$ 45.77

08/22/2006

937

04/19/2006⁽²⁾

04/19/2015

Common Stock

937

$ 0

2,813 ⁽³⁾

Stock Option (right to buy)

$ 53.6

08/22/2006

937

04/19/2006⁽²⁾

07/01/2015

Common Stock

937

$ 0

2,813 ⁽³⁾

Stock Option (right to buy)

$ 61.9

08/22/2006

937

04/19/2006⁽²⁾

10/03/2015

Common Stock

937

$ 0

2,813 ⁽³⁾

Stock Option (right to buy)

$ 69.38

08/22/2006

937

04/19/2006⁽²⁾

12/31/2015

Common Stock

937

$ 0

2,813 ⁽³⁾

Stock Option (right to buy)

$ 19.78

08/22/2006

937

04/22/2004⁽⁴⁾

04/22/2013

Common Stock

937

$ 0

938 ⁽⁵⁾

Stock Option (right to buy)

$ 21.23

08/22/2006

937

04/22/2004⁽⁴⁾

07/01/2013

Common Stock

937

$ 0

938 ⁽⁵⁾

Stock Option (right to buy)

$ 19.08

08/22/2006

937

04/22/2004⁽⁴⁾

10/01/2013

Common Stock

937

$ 0

938 ⁽⁵⁾

Stock Option (right to buy)

$ 20.77

08/22/2006

937

04/22/2004⁽⁴⁾

12/31/2013

Common Stock

937

$ 0

938 ⁽⁵⁾

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
WILLIAMS DAVID W 15415 KATY FREEWAY SUITE 100 HOUSTON, TX 77094			Executive Vice President

Signatures

/s/ William C. Long Attorney-in-Fact for David W. Williams		08/23/2006
^**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).
(1)	The options vested in four equal annual installments on April 15, 2003, 2004, 2005 and 2006.
(2)	The options vested on April 19, 2006.
(3)	The options vest in three equal annual installments beginning on April 19, 2007.
(4)	The options vested in three equal annual installments on April 22, 2004, April 22, 2005 and April 22, 2006.
(5)	The options vest on April 22, 2007.
Remarks: Form 1 of 2 dated August 23, 2006.

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