Okla. Admin. Code § 365:25-7-25
(a) Information unknown or unavailable. Information required need be given only insofar as it is known or reasonably available to the person filing the statement. If any required information is unknown and not reasonably available to the person filing, either because the obtaining thereof would involve unreasonable effort or expense, or because it rests peculiarly within the knowledge of another person not affiliated with the person filing, the information may be omitted, subject to the following conditions:
(b) Extension of time to furnish. If it is impractical to furnish any required information, document or report at the time it is required to be filed, there may be filed with the Commissioner as a separate document:
Amended at 9 Ok Reg 3885, eff 8-24-92 (emergency)
Amended at 10 Ok Reg 1487, eff 5-1-93
Amended at 11 Ok Reg 1861, eff 5-15-94