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OpenX Expands Leadership Team to Simplify Programmatic & Make Media Work Better for Buyers & Publishers

OpenX Technologies, Inc., one of the world’s leading omnichannel supply-side platforms, today (23rd October, 2025) announced a strategic expansion of its leadership team, appointing five senior executives across product, marketing, communications, and operations. 

This expansion reflects OpenX’s commitment to three core foundations: delivering transparent, high-quality inventory; driving innovation in data; and ensuring superior performance that directs more budget into working media. Together, these executives will help scale OpenXSelect™, the company’s next-generation curation and supply-side targeting platform, simplifying the complexity of programmatic and making media work better for buyers and publishers alike.

Joining OpenX are:

  • Sethu Balasubramanian, vice president of product
  • Nick Van Amburg, vice president of product marketing
  • Tiffany Tai, vice president of communications
  • Nate Fishler, vice president of global solutions & technical operations
  • Emily Kramer, head of agency curation & commerce media

"Programmatic, and even curation, have remained overly complicated for the people buying and selling media," said John Gentry, CEO of OpenX. "AI is giving us the chance to simplify what has been too complex and make our customers’ and partners’ jobs easier. However, technology alone isn’t enough. It requires people with deep product expertise, customer focus, clear communication, and the ability to innovate and maximise value to build intelligent ad tech and champion our high standards for quality, performance, and responsibility. With these new leaders, OpenX is doubling down on our mission to make media work better for buyers and publishers."

Sethu Balasubramanian, vice president of product

A seasoned product leader with over three decades of experience across TiVo, Undertone (Perion), Cadent, and Xandr (Microsoft), Balasubramanian will lead product development for OpenXSelect and its self-serve infrastructure. In this new role, Balasubramanian will drive global platform strategy with a focus on automation, usability, and international scale across CTV, display, native, mobile, app, and video.

Nick Van Amburg, vice president of product marketing

Van Amburg will lead global product marketing for the company’s entire product offering, including OpenXSelect. A seasoned marketing leader from Condé Nast, The New York Times, and Dotdash Meredith, Van Amburg has a strong track record of launching innovative ad products for some of the biggest publishers in the world. He brings over twenty years of experience to the company and a sharp focus on how product capabilities align with buyer needs — particularly in cross-regional markets including the U.S., Europe, LATAM, and APAC.

Tiffany Tai, vice president of communications

Tai will oversee all internal and external communications, including corporate communications, media relations, analyst engagement, and employee communications. She brings over a decade of experience in corporate and product communications, brand storytelling, crisis management, and executive communications from leadership roles at Hulu, Activision Blizzard, and Integral Ad Science.

Emily Kramer
Nate Fishler
Nick Van Ambur
Sethu Balasubramanian
Tiffany Tai

OpenX

OpenX is an independent omni-channel supply-side platform and a global leader in supply-side targeting, transparency, and sustainability. Through its 100% cloud-based tech stack, OpenX powers advertising across CTV, app, mobile web, and desktop...
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