What Is an Aktiengesellschaft (AG)?
An Aktiengesellschaft, usually shortened to AG, is a type of company common in Germany, Austria, Switzerland, and Liechtenstein. The name translates roughly as "share company" or "joint-stock company." Its share capital is split into individual shares, and the people who own them are called shareholders. Because the AG is a separate legal entity, it can own property, sign contracts, and borrow money in its own name. Shareholders are generally liable only up to the amount they paid for their shares, a feature known as limited liability.
How an AG Is Governed
An AG has three main bodies. The shareholders' meeting, called the Hauptversammlung, votes on major matters such as approving the annual accounts, deciding how profits are distributed, and electing shareholder representatives to the supervisory board. The management board, or Vorstand, runs day-to-day operations. The supervisory board, or Aufsichtsrat, oversees the management board. In larger German AGs, employees also elect part of this board. The main rules come from the German Stock Corporation Act, the Aktiengesetz.
This two-tier structure separates management from oversight. It is one of the features that distinguishes the AG from a simpler private company.
Why It Matters to Investors
Many large German-speaking companies, including Siemens AG and Volkswagen AG, use this legal form. Some AGs list their shares on stock exchanges, which lets the public buy and sell them. Not every AG is listed, though, and many are privately held.
Shareholders generally have rights to receive any dividend the company declares and to vote at the shareholders' meeting. Limited liability means that if the company fails, a shareholder's potential loss is usually capped at the money invested. The share price itself can still fall substantially, however. Investors may also find that AGs must follow detailed reporting and governance requirements, which can make them more transparent than smaller companies but also more costly to run.
Updated October 15, 2026. For general education only; not financial, tax or legal advice.