IBIO - iBio files for mixed shelf of undisclosed size October, 27 2023 04:54 PM iBio Inc. 2023-10-27 16:54:58 ET iBio ( NYSE: IBIO ) on Friday filed a prospectus for a mixed securities shelf offering, size undisclosed. This prospectus is not an offer to sell these securities. SEC Filing For further details see: iBio files for mixed shelf of undisclosed size