Twitter - Insto Support, page-6

No I think HC has and perhaps Twitter has less restrictions.  ( I'll check with Elon )

David Bo$$
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Member Since:  18/12/17

Here is an interesting statement in the 31 July announcement.  Not sure what is behind this ?  Perhaps it is a standard clause.
Share Purchase Plan
The Directors may, in their absolute discretion, decide to issue to any person fewer shares than that person applied for under the SPP. Full details of the SPP will be released to the ASX on 31 July 2018 and mailed to eligible shareholders by 6 August 2018.