From $1 Million to $16 Billion: How Thai Lee Built America’s Largest Woman-Owned????????????‍????????????????????????????

By Nigeria Magazine | Leading Women Series

There’s a version of the American success story that gets told over and over — the flashy IPO, the unicorn valuation, the founder on magazine covers. Thai Lee’s story isn’t that one. For decades she ran one of the biggest companies in the country almost entirely out of the spotlight. But the numbers speak for themselves, and they are staggering.

The $1 Million Bet

In 1989, Thai Lee and her then-husband, Leo Koguan, bought a small, struggling software reseller called Software House International for less than $1 million. It had just a handful of employees and about as many customers. On paper, it wasn’t an obvious bet.

Lee, a Thai-born, Korean-raised entrepreneur who had studied biology and economics at Amherst College before earning her MBA at Harvard, took the reins as President and CEO — a role she has now held for over 35 years, making her the only person to have ever led the company.

Building SHI International

Under Lee’s leadership, that small reseller became SHI International, a global IT solutions and services provider now trusted by more than 17,000 organizations, including Boeing, AT&T, and Johnson & Johnson. The company grew, year after year, without ever going public — Lee built SHI’s scale the hard way, through consistent growth and reinvestment rather than venture funding or a stock market debut.
Today, SHI generates $16 billion in annual revenue, employs thousands of people across more than 30 offices worldwide, and holds premier-tier status with nearly every major software publisher and hardware vendor on the planet.

Making History

That growth has made SHI the largest woman-owned and minority-owned business in the United States. Lee owns 60% of the company; Koguan, now the non-executive chairman, holds the remaining 40%. It has also made Lee one of the richest self-made women in the world, regularly appearing near the top of Forbes’ rankings — all while she has stayed famously private, avoiding the media attention that so often follows founders of her stature.

Why Her Story Matters

Thai Lee’s journey is a reminder that some of the biggest business success stories aren’t built on hype — they’re built on decades of discipline, reinvestment, and quiet, relentless execution. From a $1 million gamble to a $16 billion powerhouse, she has shown what’s possible when vision meets persistence.

“I knew the best chance of success for me was to start my own business,” Lee has said of the decision that changed everything.