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

At a glance

Requirements one by one

Article 11 separates merger, consolidation, and share exchange

Under 805 ILCS 5/11.05, two or more corporations may merge into a named survivor or consolidate into a newly created corporation. The plan identifies the parties and survivor or new corporation, transaction terms and mode, share conversion, survivor article changes or the new corporation's articles, and any other necessary or desirable provisions.

Section 11.10 uses a separate plan of exchange when one corporation will acquire all issued or outstanding shares of one or more classes of another. It does not turn a voluntary partial share purchase into the statutory all-shares exchange route.

Every constituent board uses a majority-of-members vote

Sections 11.05 and 11.10 require the board of each corporation to approve its plan by a resolution adopted by a majority vote of the board's members. That denominator is the board membership, not merely the directors present or voting at a meeting.

After approval, § 11.15 requires each board to direct shareholder submission when holders are entitled to vote. Article 11 does not substitute an “advisable” declaration, a recommendation exception, or a commercial-agreement condition for the statutory board and holder approvals.

Record holders receive the plan and dissent information

Section 11.15 requires notice to each record shareholder with a copy or summary of the plan, information about the right to dissent, and either the text of § 11.70 or adequate notice of its procedure. Under § 7.15, a merger, consolidation, or share-exchange meeting uses a 20-to-60-day notice window.

Unless the articles say otherwise, § 7.10 also permits action by written consent carrying the meeting-equivalent minimum vote. When fewer than all entitled holders sign, every entitled voter receives written notice at least five days before execution, and nonsigners receive prompt written notice after the action becomes effective.

The default holder vote is two-thirds of all entitled votes

Under § 11.20(a), each corporation ordinarily needs at least two-thirds of the votes of all shares entitled to vote on the plan. If class or series voting applies, the plan also needs two-thirds of the votes of each separately voting class or series. A separate vote arises when the articles require it or when a plan provision would create a class vote if placed in an articles amendment.

The articles may set a smaller or larger threshold, but § 11.20(b) forbids a threshold below a majority of all votes entitled and a majority of each class or series entitled to vote separately.

A survivor or acquirer no-vote route has three exact conditions

Section 11.20(c) excuses the surviving corporation in a merger or the acquiring corporation in a share exchange from its own shareholder vote only when its articles do not require one and all three statutory conditions hold:

1. The plan makes no amendment to that corporation's articles.
2. Every pre-effective outstanding share has identical designations, preferences, qualifications, limitations, restrictions, and special or relative rights afterward.
3. No common shares or common-convertible instruments issue, or the authorized unissued common shares plus common shares initially issuable on conversion do not exceed 20% of pre-effective outstanding common shares.

The exception excuses only that survivor or acquirer. It does not eliminate the other constituent's required approvals.

A 90%-owned solvent subsidiary may use the parent-board route

Under § 11.30, a parent owning at least 90% of every class may merge one or more solvent subsidiaries into itself or one subsidiary without a vote of the parent or subsidiary shareholders. The parent board approves the plan.

Each minority subsidiary record holder receives the plan and dissent notice. The parent waits 30 days after mailing before filing unless all outstanding subsidiary shares give written consent to the merger or waive the 30-day period. The complete ordinary-corporation provisions do not add a separate private-company holding-company or offer-followed merger route.

The public filing includes the complete plan

After approval, § 11.25 requires each corporation to execute duplicate articles of merger, consolidation, or exchange. The filing contains the full plan and, for each corporation, a recital that approval occurred at a meeting with the required vote or by written consent under § 7.10.

The current April 2026 Form BCA 11.25 uses a duly authorized officer's signature under penalties of perjury. It lists $100 for a two-corporation merger or consolidation and $50 for each additional corporation.

Under § 11.40, effectiveness occurs when the Secretary of State files the articles or on a plan-stated later date no more than 30 days after filing. Signing the commercial agreement or plan is therefore not itself the statutory effective event.

Abandonment authority belongs in the plan before filing

Sections 11.05(e) and 11.10(d) permit the plan to state how the transaction may be abandoned before the Secretary of State files the articles. Article 11 supplies no separate general plan-amendment rule and no route to terminate an already effective merger or exchange by treating it as an unfiled plan.

Section 7.75 separately requires correct account books, shareholder and board or committee minutes, and a shareholder record. Article 11 states no transaction-specific retention period, so the statute should not be read as a license to discard the plan, approval, notice, consent, filing, or acceptance record.

Dissent rights and successor effects remain separate work

Section 11.65 generally grants dissent rights when § 11.20 or the articles require shareholder authorization and to a subsidiary holder in a § 11.30 merger. Section 11.70 controls the separate demand, payment, valuation, and court procedure; approving the transaction does not preserve those rights by itself.

Under § 11.50, a merger transfers constituent property and liabilities to the survivor without impairing creditor rights or liens, and converted or exchanged holders receive only the plan consideration subject to dissenters' rights. Those statutory effects do not decide fiduciary fairness, tax, securities, antitrust, creditor priority, fraudulent transfer, contracts, employment, benefits, licensing, or industry approvals.

What trips people up

• Two-thirds is measured against all entitled votes. Abstentions and absent holders can defeat the plan even when a meeting has a quorum.
• The 20% route is not a general survivor exemption. An article amendment, changed share right, excessive common issuance, or charter vote requirement brings the survivor or acquirer back into the approval process.
• The plan becomes public. Section 11.25 and Form BCA 11.25 place the plan inside the filed articles, so confidential commercial schedules should not be assumed private merely because they originated in a transaction agreement.
• The 90% route has both ownership and solvency gates. It also carries a minority-holder plan-and-dissent notice and ordinarily a 30-day filing wait.

Common questions

Can Illinois shareholders approve a merger by written consent?

Yes, unless the articles displace § 7.10. The consent must carry the same minimum vote as a meeting, and a nonunanimous consent requires both five-day advance notice to all entitled voters and prompt post-action notice to nonsigners.

Does a surviving corporation always avoid a shareholder vote?

No. The survivor must satisfy every § 11.20(c) condition, including no articles amendment, identical share rights, and the 20% common-issuance ceiling, and its articles must not require a vote.

Is a 90%-owned subsidiary merger immediate?

Not ordinarily. Minority subsidiary holders receive the plan and dissent notice, and filing waits 30 days unless all outstanding subsidiary shares consent to the merger or waive that period.

Does filing the articles prove the deal is fair?

No. Filing supplies the statutory effective event. Fiduciary process, valuation, appraisal procedure, tax, securities, antitrust, creditor, contract, and regulatory questions remain separate.

Statutes and sources

• 805 ILCS 5/11.05-11.75 — current official Article 11 plan, approval, specialized-route, filing, effect, and dissent provisions. https://www.ilga.gov/legislation/ILCS/details?MajorTopic=&Chapter=&ActName=Business%20Corporation%20Act%20of%201983.&ActID=2273&ChapterID=65&ChapAct=805+ILCS+5%2F&SeqStart=12500000&SeqEnd=14500000&Print=True (accessed 2026-08-26)
• 805 ILCS 5/7.10, 7.15, and 7.75 — written consent, merger-meeting notice, and corporate records. https://www.ilga.gov/documents/legislation/ilcs/documents/080500050K7.10.htm (accessed 2026-08-26)
• Illinois Secretary of State Form BCA 11.25 — current articles form, authorized-officer execution, and fee instructions. https://www.ilsos.gov/content/dam/publications/pdf_publications/bca1125.pdf (accessed 2026-08-26)