STERLING, VA (August 23, 2021)—With an average annual growth rate of 99% over the past four years, Marathon TS has secured its reputation as a leader in IT solutions by earning a place on the prestigious Inc. 5000 list of fastest-growing American companies. The Inc. 5000 list is based on a complicated set of quantitative metrics, and many companies, including Intuit, Zappos, Under Armour, Microsoft, and Patagonia, gained their first national exposure as honorees on the Inc. 5000. Marathon TS has met the criterion to be on the list every year since 2014. In 2021’s rankings, Marathon TS was the 3,770th fastest-growing company in the country.

Founded in 2009 as a woman-owned small business, Marathon TS is a relationship-driven IT professional services firm identifying winning IT solutions for government, government contractors, and commercial clients by leveraging the power of people and technology. The professional team at Marathon TS successfully provides services to leading systems integrators and to the federal government, including the departments of State, Energy, and Homeland Security.

Marathon’s core offerings include these mission-critical services:

  • Custom Application Development
  • Mobile App Development
  • IT Security
  • Network and Systems Engineering
  • Intelligence Analysis

“We are very grateful to our team members for all their hard work, which has led to Marathon TS securing this honor for the past 8 years,” says CEO Pamela Siek. “Marathon TS, its leadership, and our employees are very invested in our clients’ success, and that has driven our growth over the years.”

To learn more about Marathon TS, visit

Not only have the companies on the 2021 Inc. 5000 been very competitive within their markets, but this year’s list also proved especially resilient and flexible given 2020’s unprecedented challenges. Among the 5,000, the average median 3-year growth rate soared to 543 percent, and median revenue reached $11.1 million. Together, those companies added more than 610,000 jobs throughout the past three years.

To view the Inc. 5000 list in its entirety, including company profiles and an interactive database that can be sorted by industry, region, and other criteria, visit