The Substack Mafia
7 people came through Substack and went on to found or lead other companies.
Justin Waldronseed investorFounded Playco enterprise-saas +1Michael Fertikmichaelfertik.substack.comFounded ModelcodeGabriel BirnbaumProduct DesignerFounded Y/nAlex CornellDesignerFounded CocoonLinda BlackFounder and Writer: Stem Cells and PetsFounded Gallant PetAnthem Hayek BlanchardPublisherFounded Anthem HoldingsTomasz PalaczBeyond Pale Blue (Newsletter)Founded Liftero
Frequently asked questions
- What is the Substack mafia?
- The Substack mafia is the network of 7 people who came through Substack and went on to found or lead other companies, including Playco enterprise-saas, Modelcode, Y/n, Cocoon, Gallant Pet.
- Who is in the Substack mafia?
- Notable members include Justin Waldron (Playco enterprise-saas), Michael Fertik (Modelcode), Gabriel Birnbaum (Y/n), Alex Cornell (Cocoon), Linda Black (Gallant Pet), Anthem Hayek Blanchard (Anthem Holdings), Tomasz Palacz (Liftero).
- What companies did Substack alumni found?
- Companies founded by Substack alumni include Playco enterprise-saas, Modelcode, Y/n, Cocoon, Gallant Pet, Anthem Holdings, Liftero.






