Leadbay, a San Francisco, CA-based AI-powered B2B sales prospecting platform, has raised $4.3 million in Seed funding.
Investors
The round included backing from Y Combinator, Rebel Ventures, Roosh Ventures, Inovexus Ventures, TS Ventures, Alumni Ventures, Bright Ventures, Transpose Platform, Deel Ventures, and founders and executives from Deel, Gusto, and Pennylane.
Leadbay Use of Funds
The company will use the funding to expand its U.S. go-to-market team in San Francisco, strengthen its AI inference model through a research partnership with Sorbonne University, and grow its engineering team.
About Leadbay
Leadbay is a company that develops an AI-powered B2B sales intelligence and lead generation platform, helping small and mid-sized businesses identify and qualify prospects. The platform uses proprietary AI inference models to uncover hard-to-find SMB leads in industries such as construction, manufacturing, hospitality, retail, and B2B services. Leadbay also provides predictive lead scoring, automated qualification using AI agents, and pre-CRM pipeline management tools designed to improve prospecting efficiency and sales conversion rates.
Funding Details
Company: Leadbay
Raised: $4.3M
Round: Seed
Funding Date: May 2026
Investors: Y Combinator, Rebel Ventures, Roosh Ventures, Inovexus Ventures, TS Ventures, Alumni Ventures, Bright Ventures, Transpose Platform, Deel Ventures, and founders and executives from Deel, Gusto, and Pennylane
Company Website: https://leadbay.ai/
Software Category: AI Sales Intelligence / Lead Generation
Source: https://www.finsmes.com/2026/05/leadbay-raises-4-3m-in-seed-funding.html