Entity information:

• Entity registrant name: Sentinel Energy Services Inc.
• CIK: 0001709768
• SEC filing page: http://www.sec.gov/Archives/edgar/data/1709768/000121390018003466/0001213900-18-003466-index.htm
• XBRL Instance: http://www.sec.gov/Archives/edgar/data/1709768/000121390018003466/stnl-20171231.xml
• XBRL Cloud Viewer: https://edgardashboard.xbrlcloud.com/flex/viewer/XBRLViewer.html#instance=http://www.sec.gov/Archives/edgar/data/1709768/000121390018003466/stnl-20171231.xml
• EDGAR Dashboard: https://edgardashboard.xbrlcloud.com/edgar-dashboard/?cik=0001709768
• Generator: Ez-XBRL
• Total assets: 346,075,285
• Income tax expense (benefit):
• Found reconcilation from statutory to effective rates: False
• Found income tax policy: Coming soon!

---