Stock Trading History of Jaensch Guenter

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Jaensch Guenter since year 2005. The trader's CIK number is 1198526. At the time of this reporting, Jaensch Guenter is the Director of Mrv Communications Inc (stock ticker symbol MRVC).

Stock purchases, sales, and option exercises reported by *Jaensch Guenter* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-02-21	MRVC	Mrv Communications Inc	Sale	32,250	4.30	138,725
2007-02-21	MRVC	Mrv Communications Inc	Purchase	32,250	2.56	82,398
2006-10-30	MRVC	Mrv Communications Inc	Sale	30,000	3.41	102,300
2006-10-30	MRVC	Mrv Communications Inc	Purchase	30,000	2.70	81,000
2006-02-21	MRVC	Mrv Communications Inc	Sale	15,000	3.00	45,075
2006-02-21	MRVC	Mrv Communications Inc	Purchase	15,000	.99	14,850

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Jaensch Guenter (Director of Mrv Communications Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.