Astrea Acquisition Corp. (Nasdaq: ASAX) was a blank-check company sponsored by Astrea Investment Management LLC that completed its initial public offering in February 2021, raising capital to pursue a business combination in the technology sector. The SPAC filed its final prospectus on Form 424B4 with the Securities and Exchange Commission on February 4, 2021. Astrea subsequently announced and completed a business combination with Cipher Mining Inc., a cryptocurrency mining company, with the transaction closing in August 2021; the combined entity began trading on Nasdaq under the ticker CIFR, retiring the ASAX listing. Readers seeking detailed filing history, deal terms, and sponsor disclosures for Astrea Acquisition Corp. and thousands of other SPACs can access the full dataset by signing up at SpacDesk.