Riverbed Technology (RVBD)

Who can vote at the Annual Meeting?

Only stockholders of record at the close of business on April 16, 2009 will be entitled to vote at the Annual Meeting. On this record date, there were 68,500,332 shares of Company common stock (“Common Stock”) outstanding. All of these outstanding shares are entitled to vote at the Annual Meeting.

Stockholder of Record: Shares Registered in Your Name

If on April 16, 2009 your shares were registered directly in your name with our transfer agent, Mellon Investor Services, LLC, then you are a stockholder of record. As a stockholder of record, you may vote in person at the meeting or vote by proxy. Whether or not you plan to attend the meeting, we urge you to fill out and return the enclosed proxy card or vote by proxy via telephone or the Internet as instructed on your proxy card to ensure your vote is counted.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank

If on April 16, 2009 your shares were held in an account at a brokerage firm, bank, dealer, or other similar organization, then you are the beneficial owner of shares held in “street name” and these proxy materials are being forwarded to you by that organization. The organization holding your account is considered the stockholder of record for purposes of voting at the Annual Meeting. As a beneficial owner, you have the right to direct your broker or other agent on how to vote the shares in your account. A number of brokers and banks enable beneficial holders to give voting instructions via telephone or the Internet. Please refer to the voting instructions provided by your bank or broker. You are also invited to attend the Annual Meeting. However, since you are not the stockholder of record, you may not vote your shares in person at the meeting unless you provide a valid legal proxy from your broker, bank or other custodian.

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Who can vote at the Annual Meeting?

Only stockholders of record at the close of business on April 16, 2008 will be entitled to vote at the Annual Meeting. On this record date, there were 71,707,002 shares of Company common stock (“Common Stock”) outstanding. All of these outstanding shares are entitled to vote at the Annual Meeting.

Stockholder of Record: Shares Registered in Your Name

If on April 16, 2008 your shares were registered directly in your name with our transfer agent, Mellon Investor Services, LLC, then you are a stockholder of record. As a stockholder of record, you may vote in person at the meeting or vote by proxy. Whether or not you plan to attend the meeting, we urge you to fill out and return the enclosed proxy card or vote by proxy via telephone or the Internet as instructed on your proxy card to ensure your vote is counted.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank

If on April 16, 2008 your shares were held in an account at a brokerage firm, bank, dealer, or other similar organization, then you are the beneficial owner of shares held in “street name” and these proxy materials are being forwarded to you by that organization. The organization holding your account is considered the stockholder of record for purposes of voting at the Annual Meeting. As a beneficial owner, you have the right to direct your broker or other agent on how to vote the shares in your account. A number of brokers and banks enable beneficial holders to give voting instructions via telephone or the Internet. Please refer to the voting instructions provided by your bank or broker. You are also invited to attend the Annual Meeting. However, since you are not the stockholder of record, you may not vote your shares in person at the meeting unless you provide a valid proxy from your broker, bank or other custodian.

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Table of Contents

Who can vote at the Annual Meeting?

Only stockholders of record at the close of business on September 24, 2007 will be entitled to vote at the Annual Meeting. On this record date, there were 70,705,410 shares of Company common stock (“Common Stock”) outstanding. All of these outstanding shares are entitled to vote at the Annual Meeting.