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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	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* SIMMONS L E (Last) (First) (Middle) 600 TRAVIS STE 6600 (Street) HOUSTON TX 77002 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol HORNBECK OFFSHORE SERVICES INC /LA [ HOS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner Officer (give title below) X Other (specify below) Member of Group
	3. Date of Earliest Transaction (Month/Day/Year) 09/07/2005
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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
Common Stock	09/07/2005		S(1)		25,000	D	$36.01	3,591,008	I	By SCF-IV, L.P.(2)

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

1. Name and Address of Reporting Person* SIMMONS L E (Last) (First) (Middle) 600 TRAVIS STE 6600 (Street) HOUSTON TX 77002 (City) (State) (Zip)

1. Name and Address of Reporting Person* SCF IV LP (Last) (First) (Middle) 600 TRAVIS STE 6600 (Street) HOUSTON TX 77002 (City) (State) (Zip)

1. Name and Address of Reporting Person* SCF IV GP LTD PARTNERSHIP (Last) (First) (Middle) 600 TRAVIS STE 6600 (Street) HOUSTON TX 77002 (City) (State) (Zip)

Explanation of Responses:

1. Reflects sale of common stock of issuer held by SCF-IV, L.P.

2. The reporting person is sole stockholder and sole director of L.E. Simmons & Associates, Incorporated, a Delaware corporation (LESA), which is the sole general partner of SCF-IV GP Limited Partnership, a Delaware limited partnership (SCF-IV GP), SCF-IV 3i LP, a Delaware limited partnership (SCFIV 3i) and SCF-IV Management Partners LP, a Delaware limited partnership (SCF-IV MP). Additionally, SCF-IV GP is the sole general partner of SCF-IV LP, a Delaware limited partnership (SCF-IV). Based on the reporting person's affiliation with SCF-IV, SCF-IV GP, SCFIV 3i, SCF-IV MP, and LESA (collectively the "Related Entities"), the reporting person may be deemed to beneficially own all of the shares of common stock of the Issuer beneficially owned or deemed to be beneficially owned by the Related Entities.

Remarks:

L.E. Simmons is signing for himself, as the designated filer, as well as in his capacity as attorney-in-fact for LESA, SCF-IV GP, and SCF-IV.

	L.E. Simmons	09/09/2005
	** 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.