Corporate Merger and Share-Exchange Approval and Filing Requirements in Washington

At a glance

Requirements one by one

Use Chapter 23B.11A, not the repealed merger chapter

Washington repealed former Chapter 23B.11 in 2024. Current RCW 23B.11A.020 permits domestic corporations and eligible other entities to merge under a plan into a surviving entity. RCW 23B.11A.030 separately permits a domestic corporation to acquire all shares of one or more classes or series of another domestic corporation under a share-exchange plan.

The merger plan identifies every party and the survivor by name, jurisdiction, and entity type and states how shares or interests are converted or canceled. The exchange plan identifies the acquired and acquiring corporations and the exchange consideration. Both may use objectively ascertainable outside facts within the statutory filing limits.

The affected board approves and ordinarily recommends the plan

Under RCW 23B.11A.040(1)-(3), the board of each domestic merger party and the board of the acquired corporation in a share exchange first approve the plan. When holder action is required, the board recommends approval or tender. If conflicts, special circumstances, or RCW 23B.08.245 support no recommendation, the board must tell shareholders why. It may condition holder approval or effectiveness.

The transaction-specific statute does not impose that acquired-entity plan vote on the exchange acquirer. The acquirer still must execute the Articles, and its own board, issuance, governing-document, contract, or regulatory approvals can remain necessary.

Meeting and consent packages carry the same core materials

RCW 23B.07.050 gives a merger or share-exchange meeting a 20-to-60-day notice window. Section 23B.11A.040(4) requires notice to every holder, voting or nonvoting, states that the plan will be considered, and includes the plan or a summary of material terms, conditions, and consideration. A merger into another entity also requires its articles and bylaws or organic rules, or a summary.

Under RCW 23B.07.040, all entitled holders may always approve by written consent. Meeting-minimum consent works only when the articles authorize it. The consent carries the same transaction materials, and the statute coordinates solicitation and sufficient-consent notice to voting and qualifying nonvoting holders, electronic consent, withdrawal, delivery, and a 60-day collection window.

Formation date determines the default vote

For a corporation formed before August 1, 2024, RCW 23B.11A.040(5)(a) defaults to two-thirds of all votes entitled to be cast by the overall voting group and each separate group. The articles may vary the threshold, but not below a majority of all entitled votes in each group.

For a corporation formed on or after that date, subsection (5)(b) defaults to a majority of all entitled votes overall and in each separate group. The articles or board may require more. In both branches, the denominator is entitled votes, not merely votes cast.

Converted, canceled, and exchanged classes can vote separately

Under RCW 23B.11A.041, a merger class or series votes separately when its shares are converted or canceled or when a survivor-article provision would require a separate amendment vote. Every class or series included in a share exchange is also a separate voting group.

The articles may expressly limit or eliminate the conversion/cancellation and exchange-based separate votes. Classes affected in the same or substantially similar way may instead vote together, subject to the articles and board-set conditions.

The survivor exception has no issuance-percentage test

RCW 23B.11A.040(6) excuses a survivor's holder vote, unless its articles say otherwise, when the corporation survives, its articles remain unchanged except for board-only amendments, and each pre-merger holder keeps the same number of shares with identical preferences, rights, and limitations.

Washington's current survivor exception does not add a 20% issuance ceiling. New owner liability is different: subsection (7) generally requires each affected holder's express written consent, subject to its narrow substantially-identical existing-liability exception.

Parent, offer, and holding-company routes are distinct

Under RCW 23B.11A.050, a parent holding at least 90% of the voting power of every outstanding voting class and series may merge a subsidiary into itself or another qualifying subsidiary, or merge itself into the subsidiary, without subsidiary board or holder approval. That waiver is for the subsidiary; the parent's applicable approval requirements still must be classified. The parent notifies minority subsidiary holders within 10 days after effect.

The offer-followed route in RCW 23B.11A.045 requires the plan to invoke the route, an any-and-all offer open at least 10 days, purchase of properly tendered and unwithdrawn shares, the otherwise-required voting threshold, a follow-on merger or exchange, and the same consideration for untendered shares, subject to the statutory exceptions.

RCW 23B.11A.090 separately permits a qualifying parent to merge with or into a single indirect wholly owned subsidiary without parent-holder approval. Its holding-company, ownership-chain, survivor, identical-share, governing- document, director, and federal-income-tax conditions must all be met.

File Articles, not the private transaction agreement

Under RCW 23B.11A.060, merger Articles identify each party and survivor, state jurisdiction and entity type, set out any survivor organic-record amendment, and recite holder approval or why no vote was required. Each merger party executes except the subsidiary in the 90% route. Acquired and acquiring corporations both execute share-exchange Articles, which recite the required class and series approvals.

RCW 23B.01.200 generally permits the board chair, president, or another officer to execute. The Articles go to the Secretary of State. Under RCW 23B.01.230 and 23.95.210, effect occurs on the filing's effective time or a delayed time no more than 90 days after filing. A merger involving an other entity waits until the later of Washington effectiveness and all required foreign-jurisdiction filings becoming effective.

Amendment, abandonment, and records use different approval rules

Under RCW 23B.11A.020(7) and .030(5), plan amendment needs each party's consent unless the plan provides otherwise. After holder approval, renewed holder action protects changes to consideration, specified survivor organic records, and other materially adverse terms.

Under RCW 23B.11A.080, a domestic party may abandon after approval but before effectiveness without another holder vote, following the plan or, if it is silent, board procedure. Once Articles have been delivered, all parties that executed them must execute the withdrawal before the effective time.

RCW 23B.16.010 permanently preserves shareholder and board meeting minutes and consent records in paper-convertible form. It separately keeps three years of shareholder minutes, consent records, and general shareholder communications at the principal office.

Dissenters' rights depend on route and holder conduct

RCW 23B.13.020 may cover an approval-required or offer-route merger, a 90%-parent merger, and shares acquired in a share exchange. The merger branch excludes a class or series that remains outstanding after consummation, and the chapter contains other eligibility limits.

Under RCW 23B.13.200, the meeting notice, statutory offer, or consent package must state that dissenters' rights are or may be available and include Chapter 23B.13. Section 23B.13.210 adds pre-vote written-intent and no-favorable- vote conditions, with separate non-tender and non-consent rules for those routes. This page does not attempt to complete that procedure.

When a merger becomes effective, RCW 23B.11A.070 places disappearing- entity property, contract rights, debts, obligations, and liabilities in the survivor. That succession rule and an accepted filing do not establish fiduciary fairness or satisfy tax, securities, proxy, tender-offer, antitrust, creditor, fraudulent-transfer, employment, benefit-plan, licensing, foreign, or industry law.

What trips people up

• The formation date changes the default vote. A pre-August 2024 corporation does not automatically use the newer majority rule.
• Both defaults count all entitled votes. Abstentions and uncast votes can defeat the plan.
• The survivor exception has no generic 20% ceiling. Importing that common limit from another state changes Washington's current rule.
• Ten days means calendar days in the offer statute. The text does not say business days.
• The 90% route waives subsidiary approval. It does not automatically erase every approval required of a domestic corporate parent.
• The old chapter is repealed. Current work should cite Chapter 23B.11A, not former §§ 23B.11.010 through .090.

Common questions

Can Washington shareholders approve a merger by written consent?

Yes. Unanimous consent is always available. A meeting-minimum route requires articles authorization and compliance with the transaction-material, notice, delivery, withdrawal, and 60-day collection rules.

Does the acquiring corporation vote on a share exchange?

Chapter 23B.11A places the transaction-specific plan approval on the acquired corporation. The acquirer executes the Articles, and separate board, share- issuance, governing-document, contract, or regulatory approvals may still apply.

Does a merger survivor always need shareholder approval?

No. The articles may preserve a vote, but the statutory exception applies when the corporation survives, its articles stay within the permitted no-change boundary, and every existing holder keeps the same number and rights.

Does filing the Articles preserve dissenters' rights?

No. Chapter 23B.13 uses route-specific notice and holder-conduct requirements. Those steps must be completed independently of the Chapter 23B.11A approval and filing sequence.

Statutes and sources

• RCW 23B.11A.020-.090 — current merger and share-exchange plans, approvals, voting groups, survivor, offer, parent, filing, effect, abandonment, and holding-company routes. Official Washington Legislature source: https://app.leg.wa.gov/RCW/default.aspx?cite=23B.11A
• RCW 23B.07.040 and .050 — written consent and meeting notice. Official Washington Legislature source: https://app.leg.wa.gov/RCW/default.aspx?cite=23B.07&full=true
• RCW 23B.01.200 and .230; RCW 23.95.200 and .210 — execution, filing, and effective time. Official Washington Legislature sources: https://app.leg.wa.gov/RCW/default.aspx?cite=23B.01.200 and https://app.leg.wa.gov/RCW/default.aspx?cite=23.95.210
• RCW 23B.16.010 — corporate records. Official Washington Legislature source: https://app.leg.wa.gov/RCW/default.aspx?cite=23B.16.010
• RCW 23B.13.020, .200, and .210 — dissenters' eligibility, notice, and pre-vote, tender, or consent conduct. Official Washington Legislature source: https://app.leg.wa.gov/RCW/default.aspx?cite=23B.13.020
• Sources accessed August 26, 2026.