If you’ve spent any time reading through the dense, jargon-heavy world of Delaware corporate law, you’ve probably run into the name Tamika Montgomery-Reeves. Honestly, she’s a powerhouse. As the first Black woman to serve on both the Delaware Court of Chancery and the Delaware Supreme Court, her influence on how companies are run is massive. But if there is one specific thing that litigators and board members obsess over regarding her legacy, it is her 2021 opinion in United Food and Commercial Workers Union v. Zuckerberg.
It basically changed the rules of the game for shareholder lawsuits.
Specifically, it tackled demand futility. Now, I know that sounds like a dry, "lawyer-only" term. But it is actually the gatekeeper for every derivative lawsuit in Delaware. Before Justice Montgomery-Reeves stepped in with the Zuckerberg opinion, the legal test for deciding if a shareholder could sue on behalf of a company was a bit of a mess. It was split between two different standards that felt like they were written for different eras. She fixed that.
The Problem with the Old "Split" System
For nearly forty years, Delaware used two different tests to see if a board of directors could be bypassed in a lawsuit. You had the Aronson test and the Rales test.
The Aronson test (from 1984) was used when the board had actually made a decision—like approving a merger. The Rales test (from 1993) was used for everything else, like when the board just didn't do anything at all.
Lawyers spent thousands of hours—and millions of dollars in fees—just arguing about which test to use. It was inefficient. Plus, Aronson was getting old. It was written before Delaware passed Section 102(b)(7), a law that lets companies protect directors from being sued for simple "duty of care" mistakes. Because the old Aronson test didn't account for this, it was creating "ghost" liability that didn't actually exist anymore.
The Montgomery-Reeves Solution: A Universal Three-Part Test
When the Zuckerberg case reached the Delaware Supreme Court, Justice Montgomery-Reeves saw an opportunity. She didn't just tweak the rules; she simplified them into one "universal" test.
Instead of worrying about whether the board "acted" or "failed to act," she told courts to look at each director individually and ask three specific questions. If the answer to any of these is "yes" for at least half of the board, the shareholders can move forward with their lawsuit without asking the board for permission first.
The New Three-Part Framework
- Personal Benefit: Did the director get a material personal benefit from the alleged misconduct that wasn't shared by other shareholders? (Basically, did they get a "sweetheart deal"?)
- Likelihood of Liability: Does the director face a "substantial likelihood of liability" for the claims in the lawsuit? This is huge because it excludes "duty of care" claims if the company has an exculpation clause.
- Lack of Independence: Is the director so beholden to someone who is interested or liable (like a controlling CEO) that they can't make an unbiased decision?
This refined test is now the gold standard. It makes the whole process more predictable. Honestly, it’s one of those rare legal shifts that actually makes sense to people who aren't wearing robes.
Why the Zuckerberg Opinion Still Ranks as a "Game Changer"
The Zuckerberg case itself was about a stock reclassification at Facebook (now Meta) that would have allowed Mark Zuckerberg to sell most of his stock while still keeping control of the company. The board approved it, then withdrew it, then got sued for the costs of the process.
The shareholders argued they didn't need to ask the board to sue because the board was "conflicted." Justice Montgomery-Reeves disagreed. She applied the new test and found that most of the directors weren't at risk of personal liability and weren't just Zuckerberg's "puppets."
By dismissing the case, she reinforced a "cardinal precept" of Delaware law: the board, not the shareholders, should control the company’s litigation. ## Real-World Impact for Businesses in 2026
If you’re a founder or a director, this opinion is your shield. It ensures that as long as you aren't personally profiting or acting in bad faith, a disgruntled shareholder can’t just hijack the company’s name to file a lawsuit.
But it’s also a warning. The "Independence" prong of the test is more nuanced than it used to be. Courts now look at "thick" friendships and deep business ties, not just whether someone receives a paycheck.
Actionable Next Steps for Board Members and Counsel
- Review Your Charter: Ensure your Section 102(b)(7) exculpation provisions are up to date. Under the Zuckerberg standard, these are your best defense against demand futility claims based on "care" violations.
- Audit Director Independence Regularly: Don't just check for financial ties. Look at social, philanthropic, and historical business connections. The "beholden" standard is the most common way plaintiffs try to break through the gate.
- Document the Process: When a board makes a big decision, the "business judgment" protection is stronger if the record shows a deliberate, informed process. Even with the new test, a well-documented "good faith" effort is hard to beat.
Justice Montgomery-Reeves essentially cleaned up the messy attic of Delaware law. By merging Aronson and Rales, she gave everyone a clearer map to follow. It’s not about making it impossible for shareholders to sue—it’s about making sure they only do it when the board truly can't be trusted to do the right thing.