Alta Mesa Resources, Inc. (ticker: SRUN) was formed through the business combination of Silver Run Acquisition Corporation II, a blank-check company sponsored by Riverstone Holdings, with Alta Mesa Holdings, LP and Kingfisher Midstream, LLC. Silver Run Acquisition Corporation II completed its initial public offering in 2017, targeting the upstream oil and gas sector. The transaction closed in February 2018, resulting in Alta Mesa Resources as the surviving public entity focused on oil and gas exploration and production in Oklahoma's STACK play. The 8-K filed on June 19, 2018 was submitted during the company's post-merger operating phase. Alta Mesa Resources subsequently filed for Chapter 11 bankruptcy protection in September 2019. Sign up at SpacDesk for the full filing history, deal timeline, and sponsor data on this transaction.