Isobutanol company Gevo, Inc. has filed a registration statement with the U.S. Securities and Exchange Commission (SEC) relating to its proposed initial public offering (IPO). The company has not disclosed how many shares it plans to offer nor when it will file for the IPO, but early estimates put the total worth of the IPO as high as $150 million.

During the past few years, Gevo has purchased several corn-based ethanol plants and converted them to produce isobutanol which can be used as a specialty chemical or blended with fuel. The company plans to use the money raised from the IPO to purchase more biorefineries.

UBS Investment Bank and Goldman, Sachs & Co. will be acting as joint bookrunning managers, with Piper Jaffray acting as a co-manager for the offering. The company plans to list its shares on Nasdaq Global Market under the trading symbol “GEVO.”