Corporate Shareholder Agreement Governance-Override Requirements in California

At a glance

Requirements one by one

Close-corporation status and the all-shareholder writing

California's special override route begins with statutory close-corporation status. The articles must state that status and set a maximum of no more than 35 record holders. Adding those provisions after shares have been issued requires the affirmative vote of every issued and outstanding share of every class (Cal. Corp. Code § 158(a)-(b)).

The agreement itself is a written agreement among all shareholders of the close corporation. If the close corporation has only one shareholder, the definition instead permits an agreement between that shareholder and the corporation (Cal. Corp. Code § 186).

What the agreement may change

Section 300(b) protects an agreement addressing any phase of the close corporation's affairs from invalidity merely because it interferes with board discretion or uses a partnership-like arrangement. Its examples include management, division of profits, and distribution of assets on liquidation.

That permission has a hard statutory boundary. Section 300(c) lists provisions and entire chapters that the agreement cannot alter or waive, and it preserves every required filing with the Secretary of State. Other provisions of the division may be altered or waived only “as between the parties thereto” (Cal. Corp. Code § 300(b)-(c)).

Later holders, amendment, and termination

A transferee is bound when the covered agreement is filed with the corporate secretary for prospective-purchaser inspection and the transferee has actual knowledge or notice by certificate notation. That transferee's consent is then required for modification, extension, or revocation unless the agreement permits less-than-unanimous party action (Cal. Corp. Code § 300(b)).

There is no fixed statutory term. Original issuance to a new shareholder who does not join terminates the agreement, and the special route also ends when the corporation ceases to be close. In either case, an agreement term may continue only to the extent it is independently enforceable and the agreement so provides (Cal. Corp. Code § 300(b)).

Shifted board power and liability

To the extent the agreement controls board discretion or power, each shareholder party assumes the managerial liability that the Corporations Code otherwise places on directors for acts or omissions performed under that control, and the directors are relieved to the same extent. Failure to observe meeting formalities under the agreement is not itself a factor tending to impose personal liability on shareholders for corporate obligations (Cal. Corp. Code § 300(d)-(e)).

What trips people up

The mandatory certificate text is a close-corporation legend, not a generic statement that every agreement term binds every purchaser. The legend states the record-holder cap and refers purchasers to the articles, bylaws, and agreements on file with the corporate secretary. A voluntary inter vivos transfer exceeding the article-set holder maximum is void under Section 418(d) only if the certificate carries that legend (Cal. Corp. Code § 418(c)-(d)).

Cal. Corp. Code § 418(a)-(b) separately addresses specified transfer restrictions, voting agreements, irrevocable proxies, and corporation-imposed voting restrictions. For those enumerated matters, missing certificate or statement notice protects a transferee who lacks actual knowledge. It should not be collapsed into a blanket rescission right: Sections 300 and 418 state no purchaser-rescission period.

Common questions

Can an ordinary California corporation use Section 300(b) without becoming a close corporation?

Not through this statutory route. Sections 186 and 300(b) define and authorize the agreement for a close corporation, while Section 158 supplies the required article statement and holder cap. An ordinary contract may raise other contract or corporate-law questions, but it does not acquire Section 300(b)'s special effect merely from its title.

Must the agreement be publicly filed with the Secretary of State?

Section 300(b)'s purchaser rule speaks of filing the agreement with the secretary of the corporation for inspection. That is an internal corporate record, not a Secretary of State filing. Section 300(c) separately says the agreement cannot waive a public filing that another provision requires.

Does California impose the Model Act's ten-year default term?

No fixed term appears in Sections 186 or 300. California instead ties the special statutory effect to continuing close-corporation status and participation by shareholders, subject to the limited independently enforceable continuation language in Section 300(b).

Statutes and sources

• Cal. Corp. Code § 158(a)-(b),(e) — close-corporation article statement, 35-holder ceiling, unanimous post-issuance election, and loss of close status. Official Legislative Counsel text, accessed August 27, 2026.
• Cal. Corp. Code § 186 — written all-shareholder definition and the sole- shareholder/corporation route. Official Legislative Counsel text, accessed August 27, 2026.
• Cal. Corp. Code § 300(b)-(e) — governance effect, limits, transferees, amendment, termination, director-law liability shift, and formalities rule. Official Legislative Counsel text, accessed August 27, 2026.
• Cal. Corp. Code § 418(a)-(d) — certificate and statement notice, actual-knowledge effect, close-corporation legend, and excess-holder transfer. Official Legislative Counsel text, accessed August 27, 2026.