Clarified Delaware law affirming shareholders’ authority to limit boards’ use of “poison pill” rights plans
Plaintiff(s):
Lucian Bebchuk, corporate governance scholar and shareholder of CA, Inc.
Case type / claims:
Action seeking declaratory judgment that a shareholder-adopted by law restricting the Board’s ability to adopt or implement a “poison pill” plan is valid under Delaware law. The case tested the boundaries between shareholders’ rights to amend bylaws and directors’ authority to manage corporate affairs.
Defendant(s):
CA, Inc. Board of Directors
Jurisdiction:
Delaware Chancery Court
Year:
2006
Outcome:
- Court rejected the company’s argument that such bylaws are per se illegal, affirming that shareholder-enacted bylaws limiting poison pills may be valid under Delaware law.
- Decision reinforced shareholders’ statutory right to propose and adopt governance-related bylaw amendments.
- Marked an important clarification in Delaware corporate law balancing director authority with shareholder rights.




