Corwin v. KKR Financial Holdings LLC, 125 A.3d 304 (Del. 2015)
Corwin v. KKR Financial Holdings LLC is a landmark Delaware Supreme Court decision that reshaped post-closing M&A litigation by clarifying the effect of a cleansing stockholder vote.
When a merger that does not involve a conflicted controlling stockholder is approved by a fully informed, uncoerced vote of disinterested stockholders, does the stockholder vote restore business judgment review and warrant dismissal of post-closing fiduciary duty claims absent waste, and was KKR a controlling stockholder of KFN based on its minority stake and management agreement?
Under Delaware law, when a transaction that is not subject to entire fairness review is approved by a fully informed, uncoerced vote of disinterested stockholders, the business judgment rule applies to any post-closing damages action, and the only remaining possible claim is for waste. A minority stockholder is deemed a controlling stockholder only if it exercises actual domination and control over the board's decision-making or owns a majority (or holds effective control) of the voting power; typical contractual management rights and a minority equity stake, without well-pled facts showing actual domination, do not establish controller status.
The Delaware Supreme Court affirmed the dismissal. KKR was not a controlling stockholder of KFN: its minority ownership and contractual management rights did not amount to actual domination of KFN's board. Because a fully informed, uncoerced majority of KFN's disinterested stockholders approved the merger, the business judgment rule applied, and the plaintiff's fiduciary duty claims were barred absent waste, which was not adequately pled.
Corwin established that, absent a conflicted controller, a fully informed, uncoerced stockholder vote restores business judgment review to third-party mergers and effectively channels fiduciary duty challenges to the adequacy of disclosures and to pre-closing injunctive remedies. The decision narrowed the path for post-closing damages claims by requiring plaintiffs to plead either (1) a controller conflict triggering entire fairness (addressed separately under MFW if dual protections are used) or (2) a material disclosure deficiency or coercion that vitiates the cleansing vote. As a result, Corwin profoundly influenced Delaware M&A litigation, elevating the importance of robust, accurate proxy disclosures and careful board process, and leading to more frequent early dismissals where the vote was informed and voluntary.