Blocking rights are governance powers allowing a defined investor group or board faction to prevent specified corporate actions without their approval. They appear in protective provisions attached to preferred stock.

How it works

Series A preferred might require majority preferred holder consent to: change charter adversely to preferred, authorize senior securities, declare dividends, change board size, approve mergers, or increase option pool above a cap. Individual investors rarely hold solo blocking rights unless they own a majority of a class or negotiated special rights as lead.

Board blocking dynamics differ: a tied board with investor and founder seats can deadlock on CEO replacement or sale process. Shareholder blocking rights are contractual; fiduciary duties still apply to directors.

Drag-along rights push minority holders to sell; blocking rights pull the brake until terms satisfy protected holders. In down rounds, blocking rights over new senior securities can force renegotiation of terms that would otherwise cram down earlier investors without their consent.

Why it matters

• Founders: Map consent requirements before signing term sheets. Surprises appear at acquisition closings when one preferred series withholds consent.
• Investors: Blocking rights protect against cram-down rounds and sloppy cap table moves; overuse damages founder relationships.
• Operators: Major transactions need legal checklist of stockholder and board approvals early in process.

Common mistake

Assuming board majority alone approves a sale. Preferred protective provisions may require separate preferred majority consent even if common holders and common board members agree.

Related ideas

Protective provisions, drag-along, /glossary/board-consent, and voting control.