Riverbed Technology (RVBD)

Stock Purchase Plan

The Purchase Plan became effective on the effective date of the registration statement relating to our IPO. Under the Purchase Plan, employees may purchase shares of common stock through payroll deductions at a price per share that is 85% of the lesser of the fair market value of our common stock as of the beginning of an applicable offering period or the applicable purchase date, with purchases generally every six months. Employees’ payroll deductions may not exceed 15% of their compensation. Employees may purchase up to 2,000 shares per purchase period provided that the value of the shares purchased in any calendar year does not exceed IRS limitations.

There was no new offering period under the Purchase Plan in the three months ended March 31, 2009 or 2008.

As of March 31, 2009, there was $8.5 million, net of estimated forfeitures, left to be amortized under our Purchase Plan, which will be amortized over the remaining Purchase Plan offering period, which is 19 months. Amortization in the three months ended March 31, 2009 and 2008 was $1.6 million and $2.9 million, respectively.

As of March 31, 2009, 1,922,303 shares were available under the Purchase Plan.

Stock Purchase Plan

The Purchase Plan became effective on the effective date of the registration statement relating to our IPO. Under the Purchase Plan, employees may purchase shares of common stock through payroll deductions at a price per share that is 85% of the lesser of the fair market value of our common stock as of the beginning of an applicable offering period or the applicable purchase date, with purchases generally every six months. Employees’ payroll deductions may not exceed 15% of their compensation. Employees may purchase up to 2,000 shares per purchase period provided that the value of the shares purchased in any calendar year does not exceed IRS limitations.

There was no new offering period under the Purchase Plan in the three months ended March 31, 2009 or 2008.

As of March 31, 2009, there was $8.5 million, net of estimated forfeitures, left to be amortized under our Purchase Plan, which will be amortized over the remaining Purchase Plan offering period, which is 19 months. Amortization in the three months ended March 31, 2009 and 2008 was $1.6 million and $2.9 million, respectively.

As of March 31, 2009, 1,922,303 shares were available under the Purchase Plan.