About stone five
Who we are
stone five LLC is a US-based digital advertising and lead generation company, incorporated in Delaware and focused exclusively on the North American market. We act as an intermediary between advertisers and consumers, connecting businesses with high-intent prospects through performance-based campaigns.
We are part of a wider group of companies with over seven years of experience in performance marketing across Europe, Asia, and North America. Our US operations draw on that global expertise while maintaining a dedicated focus on the standards, compliance requirements, and consumer expectations of the American market.
In certain campaigns and partnerships, stone five operates under the upyield brand — a licensed performance marketing brand with an established track record in lead generation and mobile app installs across multiple markets.
What we deliver
Our core activity is lead generation. We source consumer leads primarily in home improvement verticals — including roofing, windows, bathroom renovation, and HVAC — and distribute qualified leads to advertisers on a cost-per-lead basis. Revenue is earned when a qualified lead is delivered to and accepted by an advertiser.
Beyond lead generation, we provide performance campaign management and mobile app install (CPI) services, delivering measurable outcomes across the full consumer acquisition funnel.
How we work
Compliance first
We operate with strict adherence to US consumer protection and data privacy regulations. Every campaign is built with compliance as a baseline, not an afterthought.
Transparent reporting
Advertisers receive clear, real-time reporting on lead volume, quality metrics, and campaign performance. No black boxes. Full visibility at every stage.
Quality over volume
We validate leads before delivery and apply ongoing fraud monitoring across all traffic sources. Our focus is on qualified, high-intent prospects that convert — not raw numbers.
stone five LLC is managed by TK and operates from its registered office in Dover, Delaware, as well as from the satellite office on Broadway in New York City. For business enquiries, please use the contact page.