See link to GBI announcment just released.
http://www.geocities.com/diagnosticdeca/Genera_Extension_to_IPO_Offer_Period.pdf
Demand for IPO strong but they have come up short of the required 400 shareholders.
Called the guy at Domain and he's said that they are 140 names short.
Offer will close oversubscribed as soon as they get notification from Computershare that they've hit the required 400.
cheers