Gevo Inc (GEVO)

[Los_Venados]

To the Stockholders of Gevo, Inc.:

If you owned our common stock at the close of business on May 8, 2015 you may attend and vote at the meeting. A list of stockholders eligible to vote at the meeting will be available for review during our regular business hours at our headquarters in Englewood, Colorado for the ten days prior to the date of the Annual Meeting for any purpose related to the meeting.

Your vote is important. Whether or not you plan to attend the meeting, we hope that you will vote as soon as possible. You may vote your shares via a toll-free telephone number or over the Internet.

If you received a proxy card or voting instruction card by mail, you may submit your proxy card or voting instruction card by completing, signing, dating and mailing your proxy card or voting instruction card in the envelope provided. Any stockholder attending the meeting may vote in person, even if you have already returned a proxy card or voting instruction card.