Anti-takeover measures have been around for 40+ years and generally are referred to as "poison pills". https://en.wikipedia.org/wiki/Shareholder_rights_plan ht

Anti-takeover measures have been around for 40+ years and generally are referred to as "poison pills". https://en.wikipedia.org/wiki/Shareholder_rights_plan https://en.wikipedia.org/wiki/Shareholder_rights_plan