Following her father's death, Marjorie assumes control of Postum Cereal Company, becoming a leading woman business executive.
On May 9, 1914, following the death of her father, C.W. Post, Marjorie Merriweather Post inherited control over the Postum Cereal Company, and with it, a vast personal fortune. At the time, she was considered the wealthiest woman in the world. Her inheritance made her one of the first prominent female business leaders in the United States. Marjorie's new role was not only inheriting wealth but also assuming a leadership position in the company, a rare opportunity for women of her era. Taking the helm of a major corporation, she exemplified strategic innovation, navigating acquisitions that would expand her father’s business, profoundly influencing the American food landscape. Her move to leadership in an industry traditionally dominated by men marks a significant moment in the fight for gender equality in corporate America.