This work aims to provide a review of the literature on the concept of organizational culture, and apply that knowledge to four companies: Salesforce, Adobe, Facebook, and Twitter. Organizational culture is the shared learning any group goes through over time that guides future thoughts and behaviors. Culture can be influenced and created by leaders in specific ways, as well as by the members of the organization in how they communicate and behave with each other. The focus of this thesis is to analyze recent earnings calls for the values communicated by CEOs of the companies in question. The earnings calls were conducted by the companies, and in them, senior leaders inform shareholders and analysts on financial updates and other pertinent information about the performance of the company. Those four companies were chosen because they are popularly known to have effective and successful cultures. By understanding the foundation of organizational culture and how it might apply to such companies, people who are interested in the concept of organizational culture, and leaders in particular, may stand to learn of an aspect of business where an untapped advantage can be gained.