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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
887969	Mrv Communications Inc	MRVC.PK	Semiconductors & Related Devices (3674)	061340090

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1345051	H Kenneth Stein Shubin	20415 Nordhoff Street Chatsworth CA 91311		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-11-24	2,672	$1.48	448,477	No	4	P	Indirect	See Footnote
Common Stock	Acquisiton	2010-11-24	290	$1.48	448,767	No	4	P	Direct
Common Stock	Acquisiton	2010-11-24	5,833	$1.49	454,600	No	4	P	Indirect	See Footnote
Common Stock	Acquisiton	2010-11-24	633	$1.49	455,233	No	4	P	Direct
Common Stock	Acquisiton	2010-11-24	1,330	$1.50	456,563	No	4	P	Indirect	See Footnote
Common Stock	Acquisiton	2010-11-24	144	$1.50	456,707	No	4	P	Direct
Common Stock	Acquisiton	2010-11-24	7,523	$1.50	464,230	No	4	P	Indirect	See Footnote
Common Stock	Acquisiton	2010-11-24	816	$1.50	465,046	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Footnote
No	4	P	Direct
No	4	P	Indirect	See Footnote
No	4	P	Direct
No	4	P	Indirect	See Footnote
No	4	P	Direct
No	4	P	Indirect	See Footnote
No	4	P	Direct

Footnotes

Dr. Shubin Stein previously beneficially owned 126,250 shares of MRV Communications, Inc.'s common stock, and with the additional purchases reported above, now owns 128,133 directly. In addition, Dr. Shubin Stein has sole trading and voting discretion as the managing member of Spencer Capital Management, LLC, which manages various accounts that hold 336,913 shares of MRV Communications, Inc. common stock including the reported purchases above. As the managing member of Spencer Capital Management, LLC, Dr. Shubin Stein may be deemed to be the beneficial owner of the 336,913 shares held in the managed accounts. Dr. Shubin Stein disclaims beneficial ownership of any of the shares included in this report except to the extent of his pecuniary interest therein.
The number of shares of common stock of MRV Communications, Inc. beneficially owned by Dr. Shubin Stein indirectly has been reduced 28,510 from the prior Form 4 filing dated November 23, 2010, due to the rescission without consummation of that number of shares of an account managed by Spencer Capital Management, LLC from November 16 through 23, 2010.