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Taking an investor's money means giving up a piece of your company — and often a piece of the control that comes with it.

Bringing on an investor can fuel growth, but it permanently changes your business: you’re selling a piece of the company, taking on a partner with rights and expectations, and stepping into the world of securities law. Founders often focus on the money and overlook the legal consequences — until an unfavorable term or a compliance misstep causes problems. This guide covers the key legal considerations when bringing on an investor, so you can raise capital without giving away more than you intend or running afoul of the law.

We help businesses get this right from the start. This is general information, not advice on a specific situation.

Taking an investor’s money means giving up a piece of your company — and often some control.

Selling equity is a securities transaction

When you bring on an investor by selling equity, you’re engaging in a securities transaction — and securities are heavily regulated. As the Legal Information Institute’s overview of law.cornell.edu reflects, the sale of ownership interests generally must either be registered or fit within an exemption from registration. The U.S. Securities and Exchange Commission’s resources on sec.gov address how small businesses can raise capital within these rules. Founders who treat raising money as a simple handshake can inadvertently violate securities laws, which carries serious consequences. Understanding that investment implicates securities regulation — and complying with it — is a threshold legal consideration.

Selling a stake in your business is a securities transaction, whether you realize it or not.

Investment structure

How the investment is structured shapes everything that follows. Equity investment gives the investor an ownership stake; convertible instruments (such as convertible notes or similar) start as debt or a right and convert to equity later; and other structures allocate risk and return differently. Each has different implications for ownership, control, taxes, and the investor’s rights. The right structure depends on the stage of the business, the amount raised, and what both sides want. Choosing it deliberately — rather than defaulting to whatever the investor proposes — is important, because the structure determines how much of the company you give up and on what terms.

Ownership, control, and investor rights

An investment agreement does far more than set a price — it allocates control and rights. Key terms include how much ownership the investor receives, their voting rights, board or governance rights, protective provisions (vetoes over certain decisions), information rights, and economic terms like liquidation preferences or dividends. These determine how much control you retain and how profits and proceeds are shared. Founders sometimes give away more control than they realize by not scrutinizing these terms. Negotiating them carefully — understanding exactly what rights the investor will hold — is essential to raising capital without ceding more of your business than intended.

Protecting yourself in the deal

Beyond compliance and structure, protect your interests in the agreement itself. Understand the full set of terms and their long-term implications, not just the valuation; consider how this investment affects future rounds and your eventual exit; ensure the governance and control terms leave you able to run the business; and align the deal with your existing owners’ agreements and succession plans. As with any significant law.cornell.edu, the details govern. Because bringing on an investor is a permanent, consequential change, and securities law adds real complexity, experienced legal guidance through the process is not optional — it’s essential to a deal you’ll be glad you made.

A simple plan to get a legal partner in your corner

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The engagement at a glance

A three-step path from first call to ongoing protection.

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