In 2013, two childhood friends from Glen Ellyn, Illinois, pooled $10,000 to buy egg whites, dates, and nuts. They made their first batch of protein bars in a suburban basement using a food processor.
Four years later, global food company Kellogg Company bought their business for $600 million. Peter Rahal and Jared Smith founded Chicago Bar Company LLC, the Chicago-based company behind RXBAR, after growing tired of the long lists of artificial ingredients in regular protein snacks. With no outside investors, corporate office, or formal business experience, the pair built one of North America's fastest-growing natural food brands.
The sale in October 2017 gave the founders a huge financial return and made RXBAR a major success story in the health food industry.
Starting out in a family basement
The business began with a simple problem. Rahal and Smith had been close friends since primary school. Both were active CrossFit athletes who regularly ate protein bars. However, they struggled to find products made with simple, whole food ingredients and no added sugar or artificial additives.
In early 2013, the pair decided to make their own alternative. Each put in $5,000 from personal savings to buy ingredients in bulk and basic kitchen tools.
They set up their workspace in the basement of Rahal's parents' home in Glen Ellyn. After testing different recipes, they settled on a formula made with egg white protein, dates, and nuts. During the early months, the business relied entirely on direct sales to customers.
Rahal and Smith mixed the ingredients by hand, packed the finished bars in wrappers designed using Microsoft PowerPoint, and sold them directly to local CrossFit gym owners and members across the Midwest. Their first plan focused on small fitness communities. The founders collected feedback directly from gym members and used it to improve their products. Over time, they refined the flavours and moved production from the basement kitchen to a small rented facility.
Redesigning the package and calling out competitors
The original product gained loyal customers in fitness circles, but RXBAR's biggest business breakthrough came when the founders decided to completely change its packaging. In 2015, the company dropped its original colourful labels and introduced a simple design. The front of each wrapper listed the main ingredients in large, bold letters. Below the short ingredient list, the packaging featured the words "No B.S.
" This message set RXBAR apart from competing protein brands that used complex medical terms to describe artificial fillers. According to the brand history published on the official RXBAR website, industry consultants initially warned Rahal and Smith that the plain design lacked traditional visual appeal and might confuse potential buyers. However, the clear and direct packaging stood out on supermarket shelves.
It helped the brand attract customers beyond its original gym audience. The new packaging came with a major push into traditional retail stores. RXBAR secured distribution deals with regional grocery chains, fitness centres, and national retailers such as Target, Trader Joe's, and Whole Foods. Between 2014 and 2017, the company's annual revenue grew rapidly, rising from less than $2 million to more than $100 million.
Acquiring a clean-label leader
By 2017, RXBAR's rapid growth had caught the attention of major international food companies. These businesses wanted to benefit from growing consumer demand for healthier, less processed foods. On 6 October 2017, Kellogg Company announced a final agreement to buy Chicago Bar Company LLC for $600 million. According to official regulatory documents filed with the U.S. Securities and Exchange Commission (SEC) in its Form 10-Q report for the third quarter ending 30 September 2017, Kellogg paid for the purchase using a mix of short-term commercial paper and cash reserves.
The SEC filing stated that RXBAR would continue to operate as an independent business unit from its Chicago headquarters. This arrangement allowed the brand to keep its company culture and flexible supply chain while gaining access to Kellogg's global distribution network. Speaking to financial analysts after the acquisition announcement, then-Kellogg CEO John Bryant described RXBAR as a unique asset that strengthened the company's position in the fast-growing market for wholesome snacks.
At the time of the sale, RXBAR employed 85 full-time workers in Chicago. Its products had also expanded beyond classic protein bars to include snacks for children and plant-based protein products.
Lessons from a high-speed exit
The acquisition remains one of the fastest major buyouts in the modern packaged food industry. The company went from a basement operation to a $600 million sale in just 54 months. After the acquisition, Rahal stayed on as chief executive officer for two years.
He helped guide the brand as it became part of Kellogg's corporate structure before stepping down in 2019. Smith served as chief operating officer during the company's key growth years.
He managed supply chain expansion and daily operations as demand increased. RXBAR's success showed how direct customer feedback and simple ingredient lists could challenge established food brands. By keeping full financial ownership and avoiding early venture capital funding, Rahal and Smith retained control of their company's shares. This allowed them to receive almost the entire financial return when Kellogg completed the buyout.