Inside Mostly Media: The Team Behind Run the Numbers

CJ turns the mic on the people behind Mostly Media for a special behind-the-scenes episode of Run the Numbers. Michelle, Callie, Sarah, Matthew, Ben, and Steve share what it’s like building the company, scaling media, talent, sales, production, and operations, and dealing with CJ’s scooter lore, calendar quirks, and chaos along the way.—SPONSORS:Rillet is an AI-native ERP built for modern finance teams that want to replace NetSuite and close faster. With revenue recognition, close management, multi-entity support, and native Stripe and Salesforce integrations, Rillet helps scaling companies run their finance stack in one place. Hundreds of teams, including Windsurf and Mercor, use Rillet to make the zero-day close real. Book a demo at https://www.rillet.com/cjEY works with high-growth tech companies to navigate the messy realities of scaling—from regulatory requirements to IPO readiness. By helping teams get it right early and often, EY lets founders stay focused on building while reducing risk as they grow. Learn more at https://www.ey.com/techstartupsSpendHound is a SaaS spend management platform built for finance and procurement teams that want visibility and leverage in every deal. By tracking all your software, benchmarking pricing across thousands of vendors, and surfacing contracts and renewals, SpendHound helps you stop overpaying and negotiate with confidence. Trusted by teams at ZoomInfo and Hootsuite. Get started at https://www.spendhound.com/cjBrex is an intelligent finance platform that combines corporate cards, built-in expense management, and AI agents to eliminate manual finance work. By automating expense reviews and reconciliations, Brex gives CFOs more time for the high-impact work that drives growth. Join 35,000+ companies like Anthropic, Coinbase, and DoorDash at https://www.brex.com/metricsAleph is a modern FP&A platform built for teams that want more than another planning tool. By connecting your ERP, CRM, and other systems into one trusted data layer with AI workflows, Aleph helps you move faster with real-time insights. Get a personalized demo at https://www.getaleph.com/runRightRev is an automated revenue recognition platform built for teams that have outgrown spreadsheets and billing tool workarounds. It handles high-volume subscriptions, usage-based contracts, and mid-cycle upgrades, so you can scale without scrambling at month-end. For RevRec that keeps your books clean, visit https://www.rightrev.com/CJ—LINKS: Mostly Talent: https://mostlymetrics.typeform.com/to/cLTxtAsNCJ: https://www.linkedin.com/in/cj-gustafson-13140948/Mostly metrics: https://www.mostlymetrics.com—TIMESTAMPS:0:00 Preview and intro2:44 Show intro: meet the Mostly Media team3:37 Michelle Finn: accounting and ops4:28 Parts Tech days: CJ's first CFO role7:21 How the newsletter convinced Michelle to join9:02 Sponsors — Rillet | EY | SpendHound12:11 Callie Spillane: talent director13:17 Callie's background: HubSpot, Sneak, Superhuman13:40 Why Callie was hard to hire15:37 Snyk hypergrowth: 150 to 1,500 people16:59 Zero to one vs. one to ten18:20 9 of 20 roles filled: how it's going23:24 Sponsors — Brex | Aleph | RightRev26:58 Sarah Bousquet: media op27:45 Stay at home mom to ops lead33:48 CJ's schedule: American Psycho34:43 Matthew Mozzocchi: sales and partnerships35:41 Going full time with a newborn36:20 Product market fit signal38:07 Fewer, bigger bets on creators41:00 Podcast is the air game, newsletter is the ground game43:56 Ben Hillman and Steve Cerasoli: production47:46 Media in service of a product vs. the product itself48:37 Run the Numbers vs. Mostly Growth51:25 Where are we in three years?52:40 Credits#RunTheNumbersPodcast #CreatorEconomy #MediaBusiness #Entrepreneurship #ContentBusiness