How to Tell a Demanding Founder They’re Wrong

On this special episode of Run the Numbers, CJ Gustafson revisits standout moments from past conversations with Alex Immerman, Curt Sigfstead, Daniel Kang, Adam Ante, and David Laptor. Together, their advice reveals how great CFOs earn trust, challenge founders, speak up when the data says something is wrong, and become true strategic partners without relying on the power of the purse strings.—SPONSORS:Anrok is the sales tax platform that watches your exposure everywhere, automates compliance, and flags risk before it turns into a surprise back-tax letter from a state you've never set foot in. Companies like Anthropic, Notion, and Vanta already trust Anrok to stay ahead of rules that move faster than any spreadsheet can. Talk to a sales tax expert for a personalized exposure estimate at https://www.anrok.com/rtnRightRev is an automated revenue recognition platform that lets your product team ship new pricing without asking finance for permission, and your sales team close deals without creating downstream chaos. Check out their free tool at calculator.rightrev.com It scores your rev rec process, shows what's exposing you to risk, and tells you exactly where to focus before it bites you in the rear end. Check it out at https://calculator.rightrev.comPulley is an equity management platform that lets you issue options, model dilution, and complete 409As without your cap table turning into a spreadsheet disaster. Founders raising, hiring, and scaling use Pulley to keep equity clean and stay focused on building. Learn more or request a demo at https://pulley.com/mostlymetricsRillet 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/cjMaximor is an autonomous finance platform that runs order-to-cash, procure-to-pay, the close, cash management, and reporting on self-learning agents instead of a dozen disconnected tools. One PE-backed customer cut their close in half, took audit findings from seven to zero, and cut back-office costs by 70% in six months. You pay for outcomes, not seats. See it at https://www.maximor.ai/Brex is an intelligent finance platform with AI-powered agents that capture expenses automatically, enforce policy before the spend happens, and close your books in minutes instead of weeks. 35,000+ companies like OpenAI, Coinbase, Anthropic, and DoorDash already run on Brex. It's time to get Brex AF. Learn more at https://www.brex.com/metrics—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 Intro3:27 Alex Immerman's favorite CFO interview question4:54 What a weak answer looks like5:26 When the hard calls actually matter6:37 Walt and Roy Disney7:36 Liked even when making unpopular calls8:43 Sponsors — Anrok | RightRev | Pulley11:35 Curt from Clio: ego in the bottom drawer13:52 CFO as supporting cast15:10 Backbone vs. ego: when to use each16:23 Daniel Kang: don't use the purse strings as power17:36 Earn the seat, don't demand it18:52 Money is one arrow, not the whole quiver20:39 Sponsors — Rillet | Maximor | Brex23:54 Adam Ante: finance people pigeonhole themselves26:46 The CFO can sit in any meeting27:30 First 90 days: listen before suggesting28:46 David Laptor: listen, observe, think, speak30:50 Build a culture where speaking up is welcomed31:51 Curt from Clio: don't come in as a know-it-all33:08 Earn trust through curiosity33:46 Beware of all-green dashboards35:28 What would CJ say to Ballmer?37:14 Parting thoughts from Ben38:00 Credits