Editing Shareholder rights plan (section)

===Other takeover defenses===
Poison pill is sometimes used more broadly to describe other types of takeover defenses that involve the target taking some action.  Although the broad category of takeover defenses (more commonly known as "shark repellents") includes the traditional shareholder rights plan poison pill.  Other anti-takeover protections include:

*Limitations on the ability to call special meetings or take action by written consent.
*Supermajority vote requirements to approve mergers.
*Supermajority vote requirements to remove directors.
*The target adds to its charter a provision which gives the current shareholders the right to sell their shares to the acquirer at an increased price (usually 100% above recent average share price), if the acquirer's share of the company reaches a critical limit (usually one third). This kind of poison pill cannot stop a determined acquirer, but ensures a high price for the company.
* The target takes on large [[debt]]s in an effort to make the debt load too high to be attractive—the acquirer would eventually have to pay the debts.
* The company buys a number of smaller companies using a [[stock swap]], diluting the value of the target's stock.
* Classified boards with staggered elections for the [[board of directors]]. For example, if a company had nine directors, then three directors would be up for re-election each year, with a three-year term. This would present a potential acquirer with the position of having a hostile board for at least a year after the first election. In some companies, certain percentages of the board (33%) may be enough to block key decisions (such as a full merger agreement or major asset sale), so an acquirer may not be able to close an acquisition for years after having purchased a majority of the target's stock. As of December 31, 2008, 47.05% of the companies in the S&P Super 1500 had a classified board.<ref>{{cite web|url=https://www.sharkrepellent.net/|title=SharkRepellent.net - Home|website=www.sharkrepellent.net|access-date=2019-07-05|archive-date=2019-09-08|archive-url=https://web.archive.org/web/20190908171040/https://sharkrepellent.net/|url-status=live}}</ref> As of March 31, 2020, 27.1% of the companies in the S&P Super 1500 had a classified board.<ref>{{cite web |url=http://www.dealpointdata.com/ |title=Merger Agreements, Corporate Governance, IPOs, High Yield Debt Covenants, Spin Offs |publisher=Deal Point Data |date= |accessdate=2022-11-27 |archive-date=2022-12-04 |archive-url=https://web.archive.org/web/20221204004920/https://www.dealpointdata.com/ |url-status=live }}</ref>