Samuel Rozenberg

IrregEx is an early-stage fund backed by 80+ engineering leaders at prominent tech companies. We invest at pre-seed and seed in founders building for engineering, data, and AI teams -- infrastructure software, developer tools, security, MLOps. Our investors in the aggregate represent the ideal customer for those products, and we are actively engaged with our portfolio in on-going discussions around product roadmap and go-to-market approach, leveraging the many collective decades of experience and scar tissue on our team both building and using such tools.

IrregEx is an early-stage fund backed by 80+ engineering leaders at prominent tech companies. We invest at pre-seed and seed in founders building for engineering, data, and AI teams -- infrastructure software, developer tools, security, MLOps. Our investors in the aggregate represent the ideal customer for those products, and we are actively engaged with our portfolio in on-going discussions around product roadmap and go-to-market approach, leveraging the many collective decades of experience and scar tissue on our team both building and using such tools.

Lehman Brothers Holdings Inc. (Pink Sheets: LEHMQ, former NYSE ticker symbol LEH) (pronounced /ˈliːmən/) was a global financial-services firm which, until declaring bankruptcy in 2008, participated in business in investment banking, equity and fixed-income sales, research and trading, investment management, private equity, and private banking. It was a primary dealer in the U.S. Treasury securities market. Its primary subsidiaries included Lehman Brothers Inc., Neuberger Berman Inc., Aurora Loan Services, Inc., SIB Mortgage Corporation, Lehman Brothers Bank, FSB, Eagle Energy Partners, and the Crossroads Group. The firms worldwide headquarters were in New York City, with regional headquarters in London and Tokyo, as well as offices located throughout the world.