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FiveStones draws inspiration from the biblical tale of David overcoming Goliath with five stones, emphasizing strategic thinking over size.

Mirroring this, our company thrives on agility, intellect, and challenging norms. Comprising a diverse team, we swiftly adapt, enhance our expertise, and craft innovative solutions for exceptional client outcomes.

FiveStones proudly embraces multiculturalism, fostering a diverse environment. We have 8 strategically located offices across Asia Pacific, housing teams working with customers of various nationalities and backgrounds. While our core interest is Ad Technology, at heart, we are a company of individuals with a strong sense of humor.


Fulfilling promises with professional action plans at FiveStones.


Diverse skills unite for extraordinary outcomes.


We value people over profits, respecting all stakeholders in society.

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Alex Yeung, Managing Director

Meet Alex, the founder of FiveStones, a seasoned expert in ad tech and information technology. Starting as a technical manager at DoubleClick, Google APAC, in the early 2000s, he led a team of 20+ across the APAC region, providing consultation and support for DoubleClick products. Today, Alex leads FiveStones, an ad tech consultancy aligned with Google’s solutions, attracting prestigious clients in the consumer, media, entertainment, and financial industries. His hands-on expertise showcases FiveStones’s prowess in the dynamic world of advertising technology.

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Sandra Lu, Head of Customer Solutions

Sandra is a prominent figure at FiveStones, leading the Customer Success & Solutions team. With over a decade of expertise in data analytics solutions, programmatic, search and creative, Sandra has successfully steered teams through managing advanced digital transformation projects. Her impressive portfolio includes collaborations with esteemed clients such as Blue Insurance, PrimeCredit, Customedia, Pearson, TransUnion, and China Construction Bank (Asia).

FiveStones comprises specialised teams in Customer Solutions & Business Strategy, led by seasoned experts. Our team leaders excel in platform utilisation, creative solutions, and data analytics. Collectively, our core leaders featured below bring over 15 years of technical and agency expertise, serving major brands and agencies worldwide.

FiveStones is one of the four business pillars of the Numiracle Group. We empower organisations with technology and creativity and help them move beyond their constraints to achieve their marketing objectives.