R&R Acquisition IV, Inc. is a blank check company organized as a special purpose acquisition vehicle, identified by CIK 0001348158 with the SEC. The "R&R" designation reflects its sponsor lineage, and the "IV" suffix indicates it was the fourth in a series of acquisition vehicles under that sponsor program. On March 31, 2008, the company filed a Form 15-12G to terminate its registration under Section 12(g) of the Securities Exchange Act of 1934, effectively deregistering its securities and ending its SEC reporting obligations. The filing places its active lifecycle within the mid-2000s SPAC wave, a period of heightened blank check activity across financial markets. For the complete filing history, sponsor details, and deal timeline for R&R Acquisition IV and hundreds of similar vehicles, sign up for full data access at SpacDesk.