VANGUARD VARIABLE INSURANCE FUNDS 40-6C/A SEC Filings

24F-2NT 40-17F2 40-17G 40-17G/A 40-6C 40-6C/A 40-APP 40-APP/A 485APOS 485BPOS 485BXT 497 497J 497K CORRESP DEF 14A DEFA14A DEFR14A DEFS14A N-18F1 N-30D N-CEN N-CEN/A N-CSR N-CSR/A N-CSRS N-MFP N-MFP1 N-MFP1/A N-MFP2 N-MFP2/A N-MFP3 N-MFP3/A N-MFP/A NPORT-EX NPORT-P NPORT-P/A N-PX N-PX/A N-Q NSAR-A NSAR-A/A NSAR-B NSAR-B/A NT NPORT-EX POS EX PRE 14A PRER14A PRES14A SC 13G SC 13G/A