$Frontier电信(FTR)$ 8-K - Current report Filed: 2019-05-09 AccNo: 0001193125-19-143140 Size: 108 KBItem 5.03: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal YearItem 5.07: Submission of Matters to a Vote of Security HoldersItem 9.01: Financial Statements and Exhibits 网页链接