Corporate Director Removal and Board-Vacancy Requirements in Missouri

At a glance

Requirements one by one

Missouri's ordinary board rules appear in chapter 351. Mo. Rev. Stat. § 351.310 makes the board the corporation's manager and lets the articles or bylaws state director qualifications.

Shareholders ordinarily may remove with or without cause

At the route described in Mo. Rev. Stat. § 351.315, holders of a majority of shares then entitled to vote at a director election may remove one or more directors or the whole board with or without cause. The articles or bylaws may provide otherwise.

Mo. Rev. Stat. § 351.265.1-.2 ordinarily requires a majority of outstanding shares entitled to vote for quorum and validates a decision by a majority of shares entitled to vote on the matter and represented at that quorum, unless a larger vote applies. The specific removal section instead names holders of a majority of shares then entitled to vote at the director election.

Cumulative and class voting protect particular directors

When cumulative voting applies and fewer than all directors are targeted, votes against removal protect the director if they would suffice to elect that person at the corresponding whole-board or director-class election.

If a class of shares elects a director, only that class's outstanding shares vote on removal. Missouri permits classified terms of up to three years but states no separate private-company classified-board cause rule.

The board has a narrow cause-removal route

Mo. Rev. Stat. § 351.317 allows a majority of the entire board to remove a director for cause when the director then fails an articles/bylaw election qualification or breaches an agreement with the corporation concerning service as a director or employee. All directors must receive notice before the action. Mo. Rev. Stat. § 351.325 supplies the ordinary board quorum and meeting-vote rule, while Mo. Rev. Stat. § 351.340 permits unanimous written or electronic board consent.

The ordinary provisions state no direct judicial-removal petition, automatic cessation, or court-set reelection bar. A provisional-director remedy associated with deadlock is a separate system and does not supply the ordinary removal answer.

Missouri describes an expressly called removal meeting

Mo. Rev. Stat. § 351.315 places shareholder removal at a meeting expressly called for that purpose and specifies a Missouri registered office, principal business office, or local city/county location. For a special meeting, Mo. Rev. Stat. § 351.230 requires notice stating the purpose ten to seventy days before the meeting. Under Mo. Rev. Stat. § 351.225, the board or another person authorized by the articles or bylaws calls a special meeting.

Mo. Rev. Stat. § 351.273 separately says any shareholder meeting action may be taken by unanimous written consent with the force of a unanimous meeting vote. The statutes do not expressly reconcile that general consent rule with the removal section's expressly called meeting language.

The removal provisions state no director hearing or statement right and no separate delayed effective-time rule.

Chapter 351 does not supply detailed resignation mechanics

Mo. Rev. Stat. § 351.315 says a director holds the elected term or until a successor is elected and qualified. The provisions reviewed state no required resignation form, recipient, delivery, future date or event, acceptance, withdrawal, or irrevocability rule.

Remaining directors control the default vacancy route

Under Mo. Rev. Stat. § 351.320, unless the articles or bylaws provide otherwise, a majority of directors then in office may fill a vacancy even below quorum; the sole remaining director may also fill it. A majority of the directors elected by a class or series fills vacancies associated with that electorate.

The section expressly includes a newly created directorship from increasing board size. It does not otherwise enumerate vacancy triggers, authorize an early prospective fill, grant shareholders a default vacancy-filling vote, or identify an actor when no directors remain.

A board appointee serves until the next shareholder director election. For a classified seat, the appointee need not be presented until that director class comes before shareholders.

What trips people up

The shareholder and board removal routes have different cause rules and vote denominators. Shareholders default to with-or-without-cause removal by the specific shares-entitled majority; the board needs the statutory cause ground and a majority of the entire board.

Removal and replacement are separate. Mo. Rev. Stat. § 351.320, not the removal vote alone, determines the default filler and replacement period.

Common questions

Can the board remove a director merely because it has lost confidence?

Not under Mo. Rev. Stat. § 351.317 alone. That route requires one of the stated qualification or agreement-breach grounds.

Can one remaining director fill a vacancy?

Yes, unless the articles or bylaws provide otherwise.

Does chapter 351 provide a special route when every seat is empty?

No express all-seats-vacant actor appears in the ordinary provisions reviewed.

Statutes and sources

• Mo. Rev. Stat. §§ 351.310, .315, .317, .320, and .325 — board scope, shareholder and board removal, structural protections, vacancy filling, and board quorum. Official Missouri Revisor chapter 351 index, accessed August 25, 2026.
• Mo. Rev. Stat. §§ 351.225, .230, .265, .273, and .340 — shareholder- meeting call and notice, quorum, shareholder consent, and board meetings and consent. Official § 351.225 page, accessed August 25, 2026.