The unanimous ruling upholds the law's retroactive application and validates its single-cleansing-mechanism safe harbor for most controlling stockholder transactions.
Key Points
- Delaware Supreme Court unanimously upholds SB 21 constitutionality, including retroactive application.
- Going-private transactions (freeze-outs, squeeze-outs) still require both committee approval and stockholder vote.
- For non-going-private deals, either independent committee approval or majority-of-minority stockholder vote sufficient; dual requirement eliminated.
- New statutory definition of "controlling stockholder" replaces fact-intensive judicial analysis with structured test based on voting power and board appointment rights.
New Dynamic for Corporations and Controlling Stockholders
On Feb. 27, the Delaware Supreme Court unanimously upheld the constitutionality of the state's major revision to the Delaware General Corporation Law (DGCL) that fundamentally changed the rules for transactions between corporations and their controlling stockholders.
The decision in Rutledge v. Clearway Energy Group LLC confirms the new law (Senate Bill 21) – including its retroactive application to past transactions – is constitutional. For corporate boards, controlling stockholders, minority investors, and dealmakers, the implications are immediate and significant.
For decades, any transaction between a Delaware corporation and its controlling stockholder was subject to entire fairness review – the most demanding standard in corporate law. Controllers had to prove the deal was entirely fair in both price and process, and because these claims were fact intensive and difficult to dismiss at the motion to dismiss stage, they often invited costly litigation.
Courts eventually developed “cleansing” procedures to ease this burden. Under the framework established in the 2014 Kahn v. M & F Worldwide decision and expanded in the 2024 Match Group ruling, a controller could earn the protection of the deferential business judgment standard only if it could satisfy both of two requirements: (1) approval by an independent board committee and (2) an informed vote of a majority of the minority stockholders.
What the Law Does
Enacted in March 2025, SB 21 effectively reversed Match Group and rewrote Section 144 of the DGCL to create a streamlined framework:
- For most controlling stockholder transactions, a company can now obtain safe harbor protection by satisfying just one of two cleansing mechanisms – either approval by a committee of disinterested directors empowered to negotiate and reject the deal, or a majority of disinterested stockholder vote. There is no longer a requirement to do both. See DGCL § 144(b).
- For going-private transactions – such as freeze-out mergers or squeeze-outs – the more rigorous dual-mechanism framework from MFW still applies, requiring both committee approval and a stockholder vote. See DGCL § 144(c).
- The law also introduced a statutory definition of "controlling stockholder," replacing years of unpredictable, fact-intensive judicial analysis with a structured test based on voting power, contractual board appointment rights, or a combination of significant voting power and managerial authority. See DGCL § 144(e).
- The law applies retroactively to transactions that occurred before its enactment, except for cases that were already pending or completed in court by February 17, 2025.
What the Court Decided
Plaintiff Rutledge, a stockholder of Clearway Energy, Inc., challenged the constitutionality of SB 21 on two grounds: first, that its safe harbor provisions unconstitutionally stripped the Court of Chancery of its ability to award equitable relief; and second, that retroactive application of the safe harbor provisions violated due process by eliminating claims that had already accrued.
The Delaware Supreme Court rejected both arguments. On jurisdiction, the Court held that the amendments to Section 144 of the DGCL does not divert cases away from the Court of Chancery — it changes the substantive law that court applies, which is squarely within the legislature's power. The Court noted that the Delaware General Assembly has a long history of enacting statutes that shape the relief available in corporate cases, including director exculpation provisions and short-form merger statutes, none of which have been found unconstitutional.
On retroactivity, the Court found that the plaintiff's claims were not vested property rights but rather expectations based on prior law. The new statute did not eliminate his ability to challenge the transaction — it simply changed the framework under which the challenge would be evaluated. Because the legislature clearly expressed its intent to apply the law retroactively and the legislation bore a reasonable relationship to legitimate objectives, it satisfied due process requirements.
Key Takeaways for Businesses
Controlled companies have more flexibility in structuring transactions.
The single-cleansing-device safe harbor significantly reduces the procedural burden for non-going-private transactions. Companies no longer need to employ both an independent committee and a stockholder vote to obtain safe harbor protection — one will suffice.
Going-private deals still require the full playbook.
Freeze-outs, squeeze-outs, and similar transactions continue to demand both committee approval and a majority-of-the-minority vote. Companies contemplating take-private transactions should plan accordingly.
The statutory definition of "controlling stockholder" brings welcome clarity — with some remaining gray areas.
The bright-line thresholds make it easier to assess whether a stockholder qualifies as a controller. But the test combining one-third voting power with "managerial authority" will likely generate interpretive questions over time.
Disclosure and good process remain essential.
The safe harbors only work if the underlying process is sound. Committee members must be informed of all material facts, stockholder votes must be based on adequate disclosure, and directors must act in good faith. A deficient process can take a transaction outside the safe harbor entirely.
Retroactivity is confirmed — even past deals benefit.
The new framework now applies to transactions completed before the law was enacted, unless a lawsuit was already pending or completed by February 17, 2025. This may provide significant additional protection for companies facing potential claims from older controller transactions.
Looking Ahead
With the constitutional challenge behind it, this revision to the DGCL is now firmly established law. Boards of controlled companies should work with counsel to ensure they remain compliant in an evolving legal landscape.
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