Table of Contents

Research Handbook on Mergers and Acquisitions

Research Handbook on Mergers and Acquisitions

Research Handbooks in Corporate Law and Governance series

Edited by Claire A. Hill and Steven Davidoff Solomon

Global in scope and written by leading scholars in the field, the Research Handbook on Mergers and Acquisitions is a modern-day survey of the state of M & A. Its chapters explore the history of mergers and acquisitions and also consider the theory behind the structure of modern transaction documentation. The book also address other key M & A issues, such as takeover defenses; judges and practitioners' perspectives on litigation; the appraisal remedy and other aspects of Federal and state law, as well as M & A considerations in the structure of start-ups. This Handbook will be an invaluable resource for scholars, practitioners, judges and legislators.

Chapter 4: The modern business judgment rule

D. Gordon Smith

Subjects: law - academic, corporate law and governance, finance and banking law


For over 150 years, the business judgment rule performed a relatively straightforward task in the corporate governance system of the United States, namely, protecting corporate directors from liability for honest mistakes. Under the traditional version of the business judgment rule, when the board of directors is careful, loyal, and acting in good faith, courts refuse to second-guess the merits of the board’s decisions, even if the corporation and its shareholders are harmed by those decisions. While modern courts continue to insulate directors from liability for honest mistakes according to this traditional formula, in the 1980s Delaware courts began assigning the business judgment rule a more expansive role. The modern business judgment rule is applied not only in cases without procedural infirmities, but in cases where procedural infirmities at the board level have been mitigated by a special committee, stockholder approval, or partial substantive review by the court. In these new contexts, a court must satisfy itself that a board decision is worthy of respect, not because the decision was substantively correct, but because the effect of the procedural infirmities was sufficiently muted. After the court reaches that point, the business judgment rule ‘attaches’ to protect the substantive merits of the decision from (further) review. The modern business judgment rule is not a one-size-fits-all doctrine, but rather a movable boundary, marking the shifting line between judicial scrutiny and judicial deference. In describing the transformation of the business judgment rule, this chapter focuses on Delaware judicial opinions, with special attention to cases involving mergers and acquisitions, where the most important changes in the business judgment rule have been forged. The scripting of the business judgment rule’s new role by the Delaware courts is a work in progress, and the current law is inconsistent and confusing. Nevertheless, I trace the development of the modern business judgment rule and attempt to rationalize that development around the simple idea that the rule guides courts through the review of director conduct and marks the point at which judicial evaluation of a decision ends.

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