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The stock transfer restriction agreement (also called a continuity agreement or shareholder agreement) defines what may happen to professional-entity equity when an owner dies, becomes disabled or disqualified, loses a license, is excluded, or leaves. Its enforceability depends on professional-entity law, dental ownership rules, fiduciary duties, valuation, creditor and family-law rights, and the actual control it creates. Recent enforcement has focused closely on this document. In a pending appeal, the California Attorney General has argued that a management entity’s reserved right to replace the professional owner itself violates the corporate-practice bar: “lay entities may not exercise, or even reserve” such control. The AG’s May 2026 Aspen Dental settlement also bars the DSO from replacing a practice owner with a dentist of its choosing or requiring forfeiture of ownership when the management relationship ends.1 Work with counsel to draft against current law in each state, then revisit the agreement as that law develops.

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Prerequisites

  • The professional entity formed and shares issued
  • The dentist-owner represented by independent counsel
  • Dental healthcare counsel licensed in the state
  • At least one identified successor candidate, licensed in the state
  • Your state’s death-transition window confirmed. See the table on DSO laws by state

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What Galkin establishes and leaves open

In the unpublished, nonprecedential Galkin v. SmileDirectClub opinion, a New Jersey panel affirmed summary judgment for the defendants on the record before it. The panel considered the agreement’s New Jersey-licensee eligibility rule and clinical carve-out, as well as the plaintiffs’ lack of proof for the asserted sham-control theory.2 The decision identifies facts to test; it does not bless a national succession architecture or make licensee-only language sufficient by itself.

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The core provisions

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1. Transfer prohibition

The baseline: the owner may not sell, pledge, assign, or otherwise transfer the equity except as the agreement permits. This is what makes everything else operative. Also prohibit involuntary transfers, such as transfers by operation of law, divorce, or bankruptcy, to the extent state law allows.

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2. Triggering events

Define precisely. Vague triggers produce disputes at exactly the moment you cannot afford one.

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3. Draft the death trigger against the state’s transition window

Some dental and professional-entity statutes give an estate, representative, or surviving family member a statutory window; other states use a different disqualification, redemption, or dissolution rule. New York, New Jersey, Kansas, and Nevada illustrate materially different triggers and periods.3 The full table is on DSO laws by state. Map the trigger, notice, successor identification, approvals, and closing deadline for each entity under its own governing rules. A multistate group need not impose one state’s shortest period on every entity, but its shared runbook should identify and meet every separate deadline. Pair the documents with Plan for succession.

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4. The transfer mechanism

On a trigger, the equity transfers to a successor. Two approaches: If the DSO holds the designation right, the arrangement gives a lay entity influence over who owns the professional entity. The California Attorney General challenged specified reserved replacement rights in the Art Center Holdings matter, while other states use different statutes and enforcement theories.1 Identify who may nominate, approve, and remove a successor; limit the eligible universe to persons and entities authorized by the governing state; and have state counsel test every consent, veto, and designation right. Do not assume license eligibility alone resolves the control question.

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5. Price

Use the price or valuation process permitted by the governing statute, entity documents, fiduciary duties, tax rules, and the parties’ actual economics. A nominal or original-price formula can create forfeiture, fraudulent-transfer, tax, creditor, or fiduciary issues when it does not reflect the interest and transaction. Do not engineer the practice’s earnings merely to support a transfer formula. See Where the profit lives.

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6. Closing mechanics

  • Time period from trigger to closing, kept within the statutory transition window
  • Documents each party must deliver
  • A power of attorney or an escrowed transfer instrument so the transfer can complete if the owner or their estate does not cooperate
Treat an irrevocable DSO-held power of attorney as a high-risk control right. Northfield challenged “captive” professional-entity documents under New Jersey law, and the California Attorney General challenged specified reserved replacement rights in a separate matter; neither supplies a national rule.4 If a transfer-completion mechanism is needed for death, incapacity, disqualification, or breach, test who may hold it, the objective conditions for use, eligible transferees, valuation, notice, contest rights, fiduciary duties, and the governing state’s dental and entity laws.

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7. Enforceability against transferees

  • A restrictive legend on the stock certificate (PC) or equivalent provision in the operating agreement (PLLC)
  • Notation in the stock ledger
  • Confirmation that the mechanism actually works under the state’s corporate or LLC act
Without the legend, a transferee can argue they took the shares free of the restriction. In community property states, a spouse may have an interest in the shares. A spousal consent executed at the same time can address that interest. This is especially important where the state’s transition statute gives a surviving spouse independent rights.

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9. Successor obligations

The successor takes the shares subject to the same agreement, and must sign a joinder. Otherwise the restriction dies with the first transfer.

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Steps

1

Confirm state law limits on transfer restrictions

Particularly in California, where reserved replacement rights are under direct attack, and in any state with new legislation. Check DSO laws by state and the legislation tracker.
2

Look up the death-transition window for every operating state

The shortest one sets your closing deadline.
3

Define triggers, with a disability determination process

4

Choose and constrain the successor mechanism

Confirm eligible transferees, who may designate or approve them, conflicts, and every limit on that right under the entity’s state law. Do not rely on license eligibility alone.
5

Set the price and be able to justify it

6

Draft closing mechanics that work without the owner's cooperation, carefully

7

Have the dentist's independent counsel review

The review should address transfer triggers, valuation, conflicts, fiduciary duties, tax consequences, and the dentist’s rights under state law.
8

Execute at or immediately after share issuance

Add the restrictive legend to the certificate and note it in the stock ledger.
9

Obtain spousal consent where relevant

10

Build the operational runbook and calendar the annual review

See Plan for succession.

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Verify it worked

  • Executed for every professional entity
  • Triggers defined precisely, disability determination specified
  • Death mechanics close inside the state’s statutory transition window
  • Successors restricted to dentists licensed in the state
  • Designation right vested outside the DSO
  • Price stated with a rationale
  • Restrictive legend on certificates; stock ledger noted
  • Spousal consent where applicable
  • Successor joinder required
  • Dentist’s independent counsel reviewed
  • Review cadence and event-driven update triggers documented

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Common failure modes

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Sources

  1. Cal. AG amicus position in Art Center Holdings v. WCE CA Art, LLC (Cal. Ct. App., pending), and Aspen Dental stipulated judgment (May 7, 2026), both summarized in DLA Piper, Corporate practice of medicine enforcement: new pressure points (July 2026); Cal. AG, Aspen Dental settlement press release (May 7, 2026).
  2. Galkin v. SmileDirectClub, LLC, No. A-2867-19 (N.J. App. Div. June 11, 2021), official unpublished opinion. Annotated on DSO & dental case law.
  3. N.Y. BCL § 1510 (6 months); N.J.S.A. 14A:17-13(c) (375 days); K.S.A. 65-1424(b) (18 months, extendable to 30), statute; NRS 631.385 (2 years, family), official statute. Full 51-jurisdiction table with pinpoints: DSO laws by state.
  4. Allstate Insurance Co. v. Northfield Medical Center, P.C., 228 N.J. 596, 159 A.3d 412 (2017). Opinion.
Last modified on August 21, 2026