If you have been practicing Delaware M&A for any length of time, you have seen a version of this scene. A founder on a Tuesday call. The board pack is halfway done. The PE lead — who happens to own fifty-eight percent of the cap table — has just signed a term sheet to take the company private. The general counsel is on mute, running a checklist: independent committee, ab initio commitment, majority-of-the-minority vote, disclosure, documentation, the whole Kahn v. M&F Worldwide apparatus. Everyone in the room knows that if any of it is off by half a degree, a plaintiffs’ firm will find the seam and the next two years will be spent in Chancery explaining the deal file rather than integrating the company.
That scene — and the way it used to consume a seven-figure slice of the legal budget before a dollar of value got created — is what SB 21 was written to fix.
In 2025, the Delaware General Assembly rewrote DGCL § 144 in a way that is not incremental. It is the most consequential amendment to the statute in a generation, and it reshapes how deal lawyers plan, paper, and defend transactions where the buyer is also the controller. The amendments landed in March 2025 with a storm of commentary and a predictable round of constitutional litigation. In March 2026, the Delaware Supreme Court ended that litigation in Rutledge v. Clearway Energy. The statute stands. If you do controlling-stockholder work — squeeze-outs, recapitalizations, affiliate commercial deals, take-privates — SB 21 now sets the agenda.
This post is for deal lawyers and for the sophisticated founders who still read transaction alerts. If you are earlier in the journey and want the plain-English version of what a controlling stockholder even is and why it matters, start with our founder commentary on PE stockholders’ agreements. If you want the broader M&A practice context, our M&A page is the map.
The old world, briefly
Section 144 has always been the statute that tells you when a conflicted transaction is cleansed. For decades it contemplated three paths: disinterested-director approval with full disclosure, disinterested-stockholder approval with full disclosure, or — if neither was available — entire fairness. On paper, that was clean enough.
The trouble was that § 144 mostly spoke to individual director and officer conflicts, not to the much bigger problem: a controlling stockholder sitting on both sides of the table. For that, Delaware common law layered on MFW. In Kahn v. M&F Worldwide, 88 A.3d 635 (Del. 2014), the Supreme Court held that to earn business judgment deference in a controller freeze-out, the target had to commit up front — “ab initio” — to two independent protections: a special committee with real bargaining power, and a non-waivable majority-of-the-minority vote. Miss a piece of the six-part checklist and the standard of review flipped back to entire fairness, which in practice meant you were settling.
A decade of post-MFW case law turned “ab initio” and “truly independent” into their own cottage industry. Books-and-records demands under § 220 exploded. So did the fees. By 2024, a modestly sized take-private with a PE controller was routinely generating more legal spend on the cleansing record than on the actual merger agreement. That is the world SB 21 looked at and decided it did not like.
What the statute actually does now
SB 21 added a new subsection (e) to § 144, built specifically for controlling-stockholder transactions. Four changes matter in practice.
The first is that the statute now codifies who counts as a controller. Rather than discard the functional-control test Delaware courts had built around MFW, the legislature picked it up and wrote it into the Code. A majority of the voting power is still controller status by the numbers. A minority holder can still be a controller if they exercise actual control over the board or over the specific transaction. You do not get to engineer away the duty by staying a percentage point under fifty. The line did not move; it just moved onto the statute books.
The second change is more structural. For ordinary controller transactions — an affiliate services contract, a sponsor loan, a real estate lease with a controller-related entity — the safe harbor now treats committee approval and the majority-of-the-minority vote as alternatives rather than mandatory twins. Either gets you cleansing. For going-private and squeeze-out mergers, both are still required. That was a deliberate choice by the drafters, and it means the MFW dance is not dead where the stakes are highest; it is only retired from the ninety percent of controller transactions that are not freeze-outs.
The third is a shift in the pleading burden. SB 21 gives directors a presumption of independence when the board resolution so finds, rebuttable only by particularized facts in the complaint. This is not a rubber stamp — Chancery will still test the resolution against the record — but it is a meaningful change from the post-Corwin era, when disputed director independence was a litigation coin flip.
The fourth is the one that has not received enough attention. SB 21 narrows § 220. A stockholder seeking books and records must now articulate a “credible basis” for suspected wrongdoing with documents already in their possession. You cannot reverse-engineer a complaint from a broad inspection any longer. That is a quiet revolution for defense-side practice; it shifts the center of gravity back toward pre-litigation deal-file discipline.
Rutledge, and why the statute is no longer litigable
The moment SB 21 was signed, stockholder plaintiffs moved to kill it. The theory was constitutional: that the General Assembly cannot retroactively displace judge-made fiduciary duty standards without violating vested rights and the state constitution’s ban on special legislation. The Chancery courts largely sided with the defendant corporations. In Rutledge v. Clearway Energy, No. 345, 2025, the Delaware Supreme Court affirmed (Del. Mar. 26, 2026).
Two ideas carried the day. One — Delaware corporate law is fundamentally statutory. The General Assembly has always held the power to modify fiduciary duty rules by amending the DGCL; it has exercised that power repeatedly; and SB 21 is not constitutionally different from those earlier recalibrations. Two — the plaintiffs’ “vested rights” argument was too greedy. A stockholder does not have a constitutional entitlement to a particular pleading standard or a particular method of proving director independence, any more than a tort plaintiff has a vested right in the procedural rules that existed the day she was injured.
What that means, practically, is that your transaction planners can rely on SB 21 without hedging. The statute is not going to be invalidated mid-deal. The litigation that matters now is application litigation — whether a particular committee was truly independent, whether a particular disclosure met the standard — and that has always been the right fight.
What actually changes on your next deal
Four things. None of them are optional.
The committee resolution is now the document. Under the old regime, you could build the independence record after the fact through deposition testimony and email forensics. Under SB 21, the statute expects the independence findings to be made on the front end and recorded on the face of the resolution — member by member, relationship by relationship, citing § 144(e). A committee charter that reads like a three-paragraph delegation is no longer enough. It needs to look like a filing.
The majority-of-the-minority vote has become a drafting choice. For ordinary controller transactions, you now choose whether to layer a stockholder vote on top of committee approval, trading litigation insulation for time and disclosure burden. The right answer depends on how contested the commercial terms are, how active the shareholder base is, and whether a larger follow-on transaction is foreseeable. In a founder-controlled company with a visible activist, I still tend to recommend both. In a quiet PE portfolio company, committee alone is usually enough.
Merger agreements need a § 144(e) overlay. Disclosure schedules should affirmatively address the SB 21 elements when the buyer is a controller — who is in the control group, whether the committee was formed ab initio, whether the vote was conditioned on majority-of-the-minority, whether the § 220 window was respected. Expect “Controlling Stockholder Matters” to become its own schedule heading in 2026 deals. Our simple merger agreement template covers the bones; the overlay goes on top of it.
Litigation posture moves upstream. Because § 220 now requires the credible-basis-with-documents showing, the first battleground of a controller-transaction lawsuit is no longer the merits complaint — it is the books-and-records demand. Which means the real work of defending the deal happens before the deal closes: in board minutes that read like minutes, in committee charters that read like filings, in email hygiene that reflects an understanding that the internal deal narrative will be read later by a judge. I have written separately on the value of that discipline in our corporate governance materials, and I am increasingly of the view that it is the highest-ROI legal workstream of 2026.
Two things the safe harbor does not do
SB 21 does not repeal entire fairness. If the transaction falls outside the safe harbor because the committee was not truly independent, or because the board failed to satisfy the other statutory elements, the default standard reverts. Entire fairness is still a test you can fail on price even when your process looks defensible on paper.
SB 21 also does not travel. The statute binds Delaware courts. If you have a federal securities class action running alongside a Chancery complaint, or if your charter lacks a proper forum-selection clause and plaintiffs land somewhere outside Delaware, the safe harbor is not a defense in those courts on its own terms. Federal judges will read § 144 as they read any other state statute; they will not automatically apply it as a fiduciary-duty proxy.
The bottom line
SB 21 is the most deal-lawyer-friendly piece of Delaware legislation in a decade. It does not weaken fiduciary duties. It makes compliance with them a filing exercise rather than a litigation crapshoot. If you are running a controlling-stockholder transaction in 2026, the right next step is not a litigation posture or a war-room budget. It is a six-page process memo, a cleanly drafted committee charter, and a § 144(e) overlay on your existing merger agreement.
If you are working one of these deals right now — controller on the buy-side, a board trying to stand up a committee, a plaintiffs’ firm already circling — feel free to reach out. The fastest path is to email my firm manager, Magda, at Magda@montague.law, or to fill out our contact form. Mention you read this post.
— John