Methodology

• Scour the company’s website - companies often give information about their major shareholders on the investment sections of their websites.

• Scour the company’s latest Annual Report- companies often report about their major shareholders on  their Reports under section such as "Shareholder Information".

Example: https://corporate.zalando.com/en/investor-relations/shareholder-structure

About

A shareholder (also known as stockholder) is an individual or institution (including a corporation) that legally owns one or more shares of the share capital of a public or private corporation. Shareholders may be referred to as members of a corporation. A person or legal entity becomes a shareholder in a corporation when their name and other details are entered in the corporation's register of shareholders or members.[1]

The influence of a shareholder on the business is determined by the shareholding percentage owned.

Source: Wikipedia.