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Briefcase Appoints Michael Hasten as Head of Growth

PRIVATEAug 20, 2026

Position

Head of Growth

Company

Briefcase

Michael Hasten
LondonSoftwareArtificial IntelligenceSaaSFintechMachine LearningLegal TechAccounting

Description

Briefcase has named Michael Hasten as its new head of growth to expand its direct indexing technology. Hasten brings over 15 years of experience in institutional banking and capital markets.

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Company Information

Company

Briefcase

Location

London, England, United Kingdom

About

Briefcase is a UK startup focused on disrupting the accounting industry with AI-powered automation. The company is developing the first AI-native accounting automation platform aimed at streamlining traditionally manual processes like bookkeeping. Founded by Reuben Steenkamp and Jan Stehlik, Briefcase seeks to improve efficiency and reduce the burden of repetitive tasks in accounting firms. The company is currently in its pre-launch phase and collaborating with various UK accounting firms.

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Briefcase changed its leadership. Fundz had it the day it was filed, with the decision-maker at the company attached.

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Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals, including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications, based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 281,000+ organizations. Developers and data teams can access these signals programmatically via the Fundz Funding Data API, with transparent published pricing.