UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G*

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED

PURSUANT TO RULE 13d-2

(Amendment No. 4)*

Cogo Group, Inc.

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

G22538105

(CUSIP Number)

December 31, 2012

(Date of Event Which Requires Filing of the Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

*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 the 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).

Page 1 of 10

Cusip No. _G22538105

13G

Page 2 of 10 Pages

NAME OF REPORTING PERSONS

Michael Self

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)

(a) o

(b) o

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

NUMBER OF

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

SHARED VOTING POWER

539,593

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

539,593

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

539,593

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

1.59%

12.

TYPE OF REPORTING PERSON (See Instructions)

Cusip No. _G22538105

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Page 3 of 10 Pages

NAME OF REPORTING PERSONS

Lake Union Capital Management, LLC

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)

(a) o

(b) o

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

SHARED VOTING POWER

539,593

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

539,593

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

539,593

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

1.59%

12.

TYPE OF REPORTING PERSON (See Instructions)

IA, OO

Cusip No. _G22538105

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Page 4 of 10 Pages

NAME OF REPORTING PERSONS

Lake Union Capital Fund, LP

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)

(a) o

(b) o

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

SHARED VOTING POWER

539,593

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

539,593

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

539,593

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

1.59%

12.

TYPE OF REPORTING PERSON (See Instructions)

Cusip No. _G22538105

13G

Page 5 of 10 Pages

Item 1(a).	Name of Issuer:
	Cogo Group, Inc.

Item 1(b).	Address of Issuer’s Principal Executive Offices:

	Room 1001. Tower C, Skyworth Building

	High-Tech Industrial Park

	Nanshan. Shenzhen 518057, PRC

Item 2(a).	Name of Person Filing:

	Michael Self
	Lake Union Capital Management, LLC
	Lake Union Capital Fund, LP

Item 2(b).	Address of Principal Business Office or, if none, Residence:

	Michael Self
	c/o Lake Union Capital Management, LLC
	601 Union Street, Suite 4616
	Seattle, WA 98101

	Lake Union Capital Management, LLC
	601 Union Street, Suite 4616
	Seattle, WA 98101

	Lake Union Capital Fund, LP
	601 Union Street, Suite 4616
	Seattle, WA 98101

Item 2(c).	Citizenship:
	Michael Self – United States of America
	Lake Union Capital Management, LLC – Delaware
	Lake Union Capital Fund, LP- Delaware

Item 2(d).	Title of Class of Securities:
	Common Stock, par value $0.01 per share

Item 2(e).	CUSIP Number:

	G22538105

Cusip No. _G22538105

13G

Page 6 of 10 Pages

Item 3.

If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a:

(a)	o	Broker or dealer registered under Section 15 of the Act (15 U.S.C 78o);

(b)	o	Bank as defined in Section 3(a)(6) of the Act (15 U.S.C 78c);

(c)	o	Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C 78c);

(d)	o	Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)	o	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

(f)	o	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)	o	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)	o	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)	o	A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act (15 U.S.C. 80a-3);

(j)	o	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J);

(k)	o	Group, in accordance with § 240.13d-1(b)(1)(ii)(K).

If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution: _________________

Item 4.

Ownership:

Provide the following information regarding the aggregate number and percentage of class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:

Michael Self – 539,593

Lake Union Capital Management, LLC– 539,593

Lake Union Capital Fund, LP– 539,593

(b)

Percent of Class:

Michael Self – 1.59%

Lake Union Capital Management, LLC– 1.59%

Lake Union Capital Fund, LP– 1.59%

(c)

Number of shares as to which such person has:

(i)

sole power to vote or to direct the vote:

Michael Self – 0

Lake Union Capital Management, LLC– 0

Lake Union Capital Fund, LP– 0

Cusip No. _G22538105

13G

Page 7 of 10 Pages

(ii)

shared power to vote or to direct the vote:

Michael Self – 539,593

Lake Union Capital Management, LLC– 539,593

Lake Union Capital Fund, LP– 539,593

(iii)

sole power to dispose or to direct the disposition of:

Michael Self – 0

Lake Union Capital Management, LLC– 0

Lake Union Capital Fund, LP– 0

(iv)

shared power to dispose or to direct the disposition of:

Michael Self – 539,593

Lake Union Capital Management, LLC– 539,593

Lake Union Capital Fund, LP– 539,593

Item 5.

Ownership of Five Percent or Less of a Class:

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following o.

N/A

Item 6.

Ownership of More than Five Percent on Behalf of Another Person:

N/A

Item 7.

Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company or Control Person:

N/A

Item 8.

Identification and Classification of Members of the Group:

N/A

Item 9.

Notice of Dissolution of Group:

N/A

Cusip No. _G22538105

13G

Page 8 of 10 Pages

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect

SIGNATURE

After reasonable inquiry and to the best of its knowledge and belief, I certify (the undersigned certifies) that the information set forth in this statement is true, complete and correct.

	February 5, 2013
	(Date)

	/s/ Michael Self
	(Signature)

	Michael Self

	February 5, 2013
	(Date)
	Lake Union Capital Management, LLC
	(Signature)

	By:/s/ Michael Self
	Michael Self Managing Member

	February 5, 2013
	(Date)

	Lake Union Capital Fund, LP
	(Signature)


	By: Lake Union Capital Management, LLC General Partner By: /s/ Michael Self
	Michael Self Managing Member

Cusip No. _G22538105

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Page 9 of 10 Pages

The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing person, evidence of the representative's authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature. Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See s.240.13d-7 for other parties for whom copies are to be sent.

Attention. Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).

Cusip No. _G22538105

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Page 10 of 10 Pages

AGREEMENT

The undersigned agree that this Amendment No.4 to Schedule 13G dated February 5, 2013 relating to the Common Stock, par value $0.01 per share of Cogo Group, Inc. shall be filed on behalf of the undersigned.

	February 5, 2013
	(Date)

	/s/ Michael Self
	(Signature)

	Michael Self

	February 5, 2013
	(Date)
	Lake Union Capital Management, LLC
	(Signature)

	By:/s/ Michael Self
	Michael Self Managing Member

	February 5, 2013
	(Date)

	Lake Union Capital Fund, LP
	(Signature)


	By: Lake Union Capital Management, LLC General Partner By: /s/ Michael Self
	Michael Self Managing Member

Cogo Group Inc. SC 13G/A