Claudine Cassar

Claudine Cassar is a corporate anthropologist, author, and former Deloitte equity partner. She writes about the culture, incentives, governance, and accountability of Deloitte, PwC, EY, and KPMG.

Before entering the Big Four, Claudine founded and grew a technology business while also writing a weekly national newspaper column on politics and current affairs. In 2016, she sold the business to Deloitte and joined the firm as leader of Deloitte Malta’s Consulting practice. She later became an equity partner, giving her first-hand experience of the structures, incentives, culture, and decision-making processes inside one of the world’s largest professional services networks.

Claudine is the founder and editor of Big4News, an independent publication covering Deloitte, PwC, EY, and KPMG. She has no ongoing affiliation with any of the Big Four firms.

Her work draws on anthropology, journalism, entrepreneurship, and insider experience to examine audit quality, regulatory scrutiny, litigation, artificial intelligence, partnership economics, governance, reputation management, and organisational culture across the Big Four.

Cited & Featured In

Claudine’s reporting and analysis of the Big Four has been cited and quoted by business, financial and professional publications internationally.

Cited or quoted by

  • City AM — UK business newspaper

  • Banking Day — Australian banking and financial-services publication

  • CFO Brew — US finance and CFO publication

  • Balans — Swedish professional publication published by FAR, Sweden’s organisation for auditors and advisers

Interviews and appearances

  • Breakfast Business — live interview with Newstalk Business Editor and former BBC senior business correspondent Joe Lynam

  • Deep Dive — RoxomTV

She is also the author of The Battle for Sicily’s Soul, a narrative history of the Sicilian Mafia and those who opposed it, which received a Kirkus Reviews “Get It” verdict.

She is currently writing a book about the Big Four firms, represented by Don Fehr at Trident Media Group. The book combines reporting, documentary research, insider material, and an anthropological examination of how the Big Four operate and how their organisational systems shape behaviour.

Claudine posts regularly on LinkedIn, X, and Instagram, and writes more about her work on her author website.

Have a tip, correction, document, court filing, regulatory development, or insider perspective to share? You can contact Claudine by replying to any Big4News email or by emailing big4news@claudinecassar.com.

Subscribe to Big4News: https://www.big4news.com/subscribe


For more about the publication’s mission, see About Big4News. For more about the publication’s standards, sourcing and use of AI, see Editorial Approach.