There's a specific kind of company we like: a small, founder-owned business with real revenue, real customers, and a real growth opportunity — and an owner who's stuck.
Stuck because the bank won't lend against the cash flow they have. Stuck because the back office lives in spreadsheets the owner builds at night. Stuck because scaling means hiring people they've never managed, signing contracts they've never written, and trusting capital partners who've never run a job.
Onyx Capital is built for that operator. We bring the capital, the back-office infrastructure, and the operating playbook — and we let the operator keep being the operator.
Carlos Garza built and ran Inter National Bank for 16 years, scaling it to roughly $1.5B in assets before its sale to Banorte. He founded Cornell Group, a wireline-focused oilfield services company, and exited it to publicly traded KLX Energy in a $125M acquisition in 2017. In 2019 he founded West Texas Cementers — now one of the most competitive cementing operators in the basin, taking market share from Halliburton and SLB.
Onyx Capital is the platform that turns that pattern — partnering with the operator, putting in capital and process, keeping the founder in the chair — into something repeatable. Across many companies. With capital pre-committed. With a back office already built.
CPA and former CEO of Inter National Bank, where he led the institution to ~$1.5B in assets before its sale to Banorte Financial Group. Founded Cornell Group, a wireline-focused oilfield services company, exited via $125M acquisition by publicly traded KLX Energy in 2017. Founded West Texas Cementers in 2019 — now one of the most competitive cementing operators in the basin, taking share from Halliburton and SLB. B.S. Accounting, University of Texas at Austin.
20 years of industrial leadership across oilfield services, manufacturing, and steel distribution. Progressive P&L roles at National Oilwell Varco and Voestalpine, managing businesses $20M–$200M across four continents. Led commercial transformations, post-acquisition integrations, and built emerging units from launch to category leadership. B.S. Finance, University of Colorado. MBA, McCombs School of Business at UT Austin.
Career rooted in finance and accounting at a publicly-traded oilfield services company. CFO of Strata Wireline and West Texas Cementers — Onyx Capital's anchor portfolio platforms — and President of Rosewood Development. Brings rigor to diligence, capital deployment, and post-close financial integration. B.S. Accounting, McCombs School of Business at UT Austin.
A controlling stake gives us the ability to deploy capital and centralize back office. Leaving meaningful equity with the operator gives them a reason to keep building. That's the alignment most PE shops break. We keep it.