 NEW YORK, July 28, 2021 GLOBE NEWSWIRE -- CleanTech Acquisition Corp. the Company announced today that the underwriters of its initial public offering exercised their over-allotment option to the extent of 2,250,000 units and purchased such units on July 28, 2021. The 17,250,000 units sold in the offering, including the 2,250,000 units subject to the over-allotment option, were sold at an offering price of 10.00 per unit, generating gross proceeds of 172,500,000 to the Company. 