Seth Boro built his fortune through a finance and technology investing career, becoming a managing partner at Thoma Bravo and leading major infrastructure software and cybersecurity investments. [1][2][3]
He entered private equity through a professional career
Boro grew up in Canada, earned a commerce degree from Queen's University and later an MBA from Stanford. He began in securities and investment banking before moving to Summit Partners, where he focused on technology and business-services private equity. [1]
He joined the firm that became Thoma Bravo in 2005 and became a managing partner in 2013. Forbes classifies his private equity fortune as self-made and does not identify an inherited company or family capital platform behind his wealth. [2][1]
Like Spaht and Crabill, Boro joined an existing investment organization rather than creating the original firm. His billionaire outcome came from earning a senior economic stake and helping expand the software strategy over many years. [1][3]
Cybersecurity investing became a major source of value
Boro leads Thoma Bravo's infrastructure software and cybersecurity strategy. The firm says he has held more than 30 board seats, led more than 15 exits and helped build a cybersecurity portfolio representing tens of billions of dollars in enterprise value. [1]
Forbes counted Boro among the Thoma Bravo managing partners who became new billionaires in 2024. The evidence supports a highly self-created fortune based on professional investment performance and partnership ownership, with a modest deduction because he scaled within a preexisting firm. [3][2]
Sources for background
Sources reviewed Oct 15, 2026.
- Seth Boro · Thoma Bravo
- Seth Boro · Forbes · Jul 15, 2026
- New Billionaires 2024: Taylor Swift, Magic Johnson And 263 Others Join The Ranks This Year · Forbes · Apr 2, 2024
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