CJ Gustafson founded Mostly Media, home to the Mostly Metrics newsletter and the Run the Numbers podcast, after writing his way out of one career and into the next. His interest in company filings started at PwC, cataloging risk factors across roughly 150 S-1s and 10-Ks, work that later shaped how he reads a filing today. He went on to build the investor-relations function at a fast-growing company he helped take through a sale process, and now spends his time dissecting fresh IPO filings, interviewing CFOs from Series B startups to mega-cap public companies, and pushing finance leaders to put a point of view in writing instead of hedging.