An operating agreement is a legal document that establishes the governance structure, ownership percentages, and operational rules for a limited liability company (LLC). This contract binds all members of the LLC and defines their rights, responsibilities, profit-sharing arrangements, decision-making authority, and procedures for handling disputes, member departures, or business dissolution.

    While not required in every state, operating agreements serve as the foundation for how an LLC functions. They typically specify each member's capital contribution, ownership stake (expressed as membership units or percentages), voting rights, and share of profits and losses. The agreement also outlines management structure—whether the LLC will be member-managed (owners run daily operations) or manager-managed (designated individuals handle operations). Critical provisions cover admission of new members, transfer of ownership interests, buy-sell arrangements, and dispute resolution mechanisms.

    Why It Matters

    For angel investors, the operating agreement is one of the most critical documents to review before investing in an LLC-structured startup. This document determines your voting power, profit distribution rights, and exit options—often more important than your ownership percentage alone. A poorly drafted operating agreement can leave you without meaningful control even if you own 40% of the company, or trap your capital with no clear path to liquidity. Understanding provisions around drag-along rights, tag-along rights, and redemption clauses can mean the difference between a successful exit and a stranded investment.

    Example

    Sarah invested $250,000 in a tech startup LLC for a 25% ownership stake. The operating agreement specified that major decisions—including raising new capital, selling the company, or hiring C-level executives—required approval from members holding at least 70% of ownership interests. When the founder later wanted to raise a down round that would significantly dilute Sarah's stake, she had the power to block the transaction and negotiate better terms. Without this supermajority provision in the operating agreement, the founder could have proceeded over her objections, despite her substantial investment.

    Membership Units, Drag-Along Rights, Limited Liability Company