Chancery Pulse

Delaware Court of Chancery — Trusts & Estates Digest
April 20–27, 2026 • 8 opinions reviewed • 1 T&E relevant

This Period at a Glance

Client Alert Candidates

Client Alert Candidate

DSM Holdco, Inc., et al. v. Arthur T. Demoulas

C.A. No.: 2025-1020-JTL Date: April 20, 2026 Judge: Laster, V.C.

Why this matters for T&E clients: When a closely held operating company is owned through generational family trusts — and trust beneficiaries are also stockholders, directors, and litigants in collateral trust proceedings — board-level decisions and trust-level interests can fuse into a single dispute. V.C. Laster validated termination of a controlling-family CEO under the business judgment rule despite vigorous arguments that the action was driven by sister-stockholders and a pending trust-distribution feud. Practitioners structuring or advising family-trust-owned enterprises should treat this opinion as the latest and most thorough Delaware roadmap for separating corporate governance from trust-beneficiary politics.

Draft alert and full case summary appear below.

Case Summaries

DSM Holdco, Inc.; Demoulas Super Markets, Inc.; et al. v. Arthur T. Demoulas

C.A. No.: 2025-1020-JTL Date: April 20, 2026 Judge: Laster, V.C. Type: Post-Trial Opinion (126 pp.)
Related Entity (T&E Adjacent) Family Business Succession Fiduciary Duty

Issue

Whether a board majority of independent directors — placed on the board by sister-stockholders of a family-trust-owned grocery chain — breached their fiduciary duties when they suspended and ultimately terminated the long-tenured CEO (a controlling-family member), or whether their actions were instead protected by the business judgment rule and entitled to validation under 8 Del. C. § 225(a).

Holding

Arthur Demoulas failed to carry his burden of proving that a majority of the Current Directors acted in bad faith. The business judgment rule protects the directors' decisions to suspend and later terminate Arthur. The court will enter judgment confirming Arthur's removal as President and CEO as valid.

Key Reasoning

V.C. Laster applied the "twice-tested" Berle framework — corporate action must satisfy both the technical rules of corporate power and the equitable rules analogous to those governing a trustee's exercise of fiduciary discretion. Despite a record laced with family acrimony (a Massachusetts-law Family Trust holding 10% of the equity for the next generation, ongoing trust-beneficiary litigation between Arthur and his sisters over principal-vs-income characterization of company distributions, and contemporaneous estate-planning maneuvers), the court declined to recharacterize director action as controller-driven self-dealing. The board followed deliberative, lawyer-advised process; the CEO's pre- and post-suspension conduct supplied an independent good-faith basis for termination; and the parties' collateral trust litigation did not infect the directors' corporate decision-making.

Practitioner Takeaway

For attorneys structuring family-trust-owned operating companies (the Massachusetts Demoulas Family Trust pattern is widespread): (1) document the corporate record at the entity level with the same care you would document a trustee's investment-decision record — the BJR is process-protective, but only if the process is real; (2) where company distributions can be characterized as "income" or "principal" with downstream consequences for trust beneficiaries, get tax counsel and the trustee's view of record before the board votes; (3) when family-member directors or stockholder-trustees serve in dual capacities, expect the loser of any termination or compensation fight to argue the corporate decision was a vehicle for trust-level grievances — a clean separation of board minutes, mediation efforts, and outside-director deliberations is the best defense.

Precedent Impact

Clarifies

Substantial extension of family-business-succession case law into the trust-beneficiary context. While the legal rule (BJR protection where independent directors deliberate in good faith) is not novel, the application to a 126-page record dominated by family-trust dynamics is the most thorough Delaware treatment in recent memory.

Draft Client Alert

Subject: Family-Trust-Owned Businesses: Vice Chancellor Laster Validates Termination of Controlling-Family CEO in DSM Holdco v. Demoulas (April 20, 2026)

Last week, V.C. Laster issued a 126-page post-trial opinion in DSM Holdco, Inc. v. Demoulas, C.A. No. 2025-1020-JTL, confirming the validity of the board's termination of Arthur T. Demoulas as President and CEO of Market Basket's parent companies. The opinion is procedurally a § 225 corporate-validation case, but its underlying record is a textbook study of how a multigenerational Family Trust, ongoing trust-beneficiary litigation, and collateral estate-planning maneuvers can intersect with — but should not displace — proper corporate fiduciary analysis. Clients with family-trust-owned operating companies should review their governance structures with this decision in mind, particularly: (i) the importance of independent-director deliberation insulated from trust-level disputes; (ii) the principal-vs-income characterization of company distributions where Massachusetts (or any state-law) trust principles govern the holding trust; and (iii) clean documentation when family-member directors or stockholder-trustees act in dual capacities. We are happy to walk through the implications for your structure.

Other Opinions (Non-T&E)

Christian Schank, et al. v. Ariz. Isotopes Sci. Rsch. Corp. — 04/24/2026 — McCormick, C. — Letter Decision adopting senior magistrate's post-trial report on a § 220 books-and-records action; cost-shifting affirmed in plaintiffs' favor, but neither side's bad-faith fee-shifting motion granted.
Kevin Kulak v. Itshak (“Itzik”) On, et al. — 04/24/2026 — McCormick, C. — Omnibus Letter Decision on eight motions in a derivative/direct action involving Movado PT Technologies and its founders; addresses sanctions, partial summary judgment, and intervention by stockholders.
Tesaro, Inc., et al. v. AnaptysBio, Inc. — 04/24/2026 — McCormick, C. — Memorandum Opinion granting motion to dismiss anticipatory-breach claim arising from a pharmaceutical collaboration agreement; rejects the defendant's anti-SLAPP argument under Delaware's amended statute for failure to establish nexus.
Mikhail Gorodetskiy v. Honeywell International Inc. — 04/22/2026 — Mitchell, M. — Magistrate's Final Report denying advancement of legal expenses to former CEO of Russian Honeywell subsidiary; holds plaintiff failed to satisfy contractual prerequisites under Article Eleventh of Honeywell's Certificate.
Calvitti Pools & Spas, Inc. d/b/a Blue Haven Pools & Spas v. Stephanie & Robert Patton — 04/21/2026 — Wright, M. — Magistrate's Memorandum Report denying motion to transfer to Court of Common Pleas under the Delaware Uniform Arbitration Act and granting judgment on the pleadings to confirm an arbitration award arising from a residential pool-construction dispute.
Douglas M. Chertok, et al. v. OnSolve, LLC — 04/21/2026 — Fioravanti, V.C. — Corrected Post-Trial Memorandum Opinion finding a corporation breached its certificate of incorporation by conditioning payment of merger consideration on execution of a release; awards prejudgment interest at the legal rate, uncompounded; damages capped at the merger-agreement per-share consideration.
Masimo Corporation v. Joe E. Kiani — 04/21/2026 — Cook, V.C. — Opinion granting CEO-defendant's motion to dismiss in favor of California forum-selection clause; the company's Delaware fiduciary-duty challenge to its founder-CEO's employment agreement must proceed in California per the agreement's mandatory venue provision.

Opinion PDF Links

DSM Holdco, Inc., et al. v. Demoulas (04/20/2026 — Laster, V.C.)
Douglas M. Chertok et al. v. OnSolve LLC (04/21/2026 — Fioravanti, V.C.)
Calvitti Pools & Spas v. Patton (04/21/2026 — Wright, M.)
Masimo Corporation v. Joe E. Kiani (04/21/2026 — Cook, V.C.)
Mikhail Gorodetskiy v. Honeywell International Inc. (04/22/2026 — Mitchell, M.)
Christian Schank, et al. v. Ariz. Isotopes Sci. Rsch. Corp. (04/24/2026 — McCormick, C.)
Tesaro, Inc., et al. v. AnaptysBio, Inc. (04/24/2026 — McCormick, C.)
Kevin Kulak v. Itshak On, et al. (04/24/2026 — McCormick, C.)