UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 4)1

USA Truck, Inc.

(Name of Issuer)

Common Stock, Par Value $0.01 Per Share

(Title of Class of Securities)

902925106

(CUSIP Number)

VADIM PERELMAN

BAKER STREET CAPITAL MANAGEMENT, LLC

12400 Wilshire Blvd, Suite 940

Los Angeles, CA 90025

(310) 246-0345

STEVE WOLOSKY, ESQ.

OLSHAN FROME WOLOSKY LLP

Park Avenue Tower

65 East 55th Street

New York, New York 10022

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

May 5, 2015

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note:  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See § 240.13d-7 for other parties to whom copies are to be sent.

_______________

1              The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP NO. 902925106

1	NAME OF REPORTING PERSON    BAKER STREET CAPITAL L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS    WC
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION     DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 1,400,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 1,400,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,400,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.2%
14	TYPE OF REPORTING PERSON    PN

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CUSIP NO. 902925106

1	NAME OF REPORTING PERSON BAKER STREET CAPITAL MANAGEMENT, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION CALIFORNIA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 1,400,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 1,400,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,400,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     13.2%
14	TYPE OF REPORTING PERSON OO

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CUSIP NO. 902925106

1	NAME OF REPORTING PERSON BAKER STREET CAPITAL GP, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 1,400,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 1,400,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,400,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     13.2%
14	TYPE OF REPORTING PERSON OO

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CUSIP NO. 902925106

1	NAME OF REPORTING PERSON VADIM PERELMAN
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 1,400,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 1,400,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,400,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     13.2%
14	TYPE OF REPORTING PERSON IN

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CUSIP NO. 902925106

The following constitutes Amendment No. 4 the Schedule 13D filed by the undersigned (“Amendment No. 4”). This Amendment No. 4 amends the Schedule 13D as specifically set forth herein.

Item 4. Purpose of Transaction.

Item 4 is hereby amended to add the following:

On May 5, 2015, the Reporting Persons and the Issuer entered into an Amendment to Cooperation Agreement (the “Amendment”). The Amendment amends certain provisions of the previously disclosed Cooperation Agreement entered into by the Issuer and the Reporting Persons on February 25, 2015 (the “Cooperation Agreement”).

As previously disclosed in Amendment No. 3 the Schedule 13D, the Cooperation Agreement requires, among other things, the Issuer to undertake a public secondary offering of 1,400,000 Shares held by the Reporting Persons and the Reporting Persons to reimburse the Issuer for certain expenses incurred in connection with such offering. Prior to the Amendment, the aggregate amount of expenses for which the Reporting Persons were obligated to reimburse the Issuer was capped at $42,000 and the reimbursement applied only to designated expenses. Pursuant to the Amendment, if the offering has not closed by June 15, 2015, and certain acts or omissions of the Reporting Persons have occurred, then (a) the Reporting Persons have agreed to reimburse the Issuer for an expanded portion of the expenses related to the offering, up to an aggregate amount of $200,000 and (b) the Issuer will not be obligated to undertake a future offering for the Reporting Persons until the parties reach a subsequent agreement on expense allocation and timing.

The foregoing description of the Amendment is qualified in its entirety by reference to the full text of the Amendment, which is attached hereto as Exhibit 99.1 and incorporated by reference herein.

Item 6. Purpose of Transaction.

Item 6 is hereby amended to add the following:

On May 5, 2015, the Reporting Persons and the Issuer entered into the Amendment, as defined and described in Item 4.  A copy of the Amendment is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 7. Material to be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibit:

99.1 Amendment to Cooperation Agreement, by and among Baker Street Capital L.P., Baker Street Capital Management, LLC, Baker Street Capital GP, LLC, Vadim Perelman and the Issuer, dated May 5, 2015.

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CUSIP NO. 902925106

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated:  May 7, 2015	BAKER STREET CAPITAL L.P.
	By:	Baker Street Capital GP, LLC General Partner
	By:	/s/ Vadim Perelman
	Name:	Vadim Perelman
	Title:	Managing Member

BAKER STREET CAPITAL MANAGEMENT, LLC
By:	/s/ Vadim Perelman
Name:	Vadim Perelman
Title:	Managing Member

BAKER STREET CAPITAL GP, LLC
By:	/s/ Vadim Perelman
Name:	Vadim Perelman
Title:	Managing Member

/s/ Vadim Perelman

VADIM PERELMAN

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