The People
Behind the Results

The People
Behind the Results

The people who built your strategy are the ones running it. Our leadership team brings decades of holding company and performance media experience to every client engagement – accountable to your growth, not billable hours.

Kate O'Brien

Kate O’Brien

Founder and Chief Executive Officer

Kate founded Powers of Reasoning because the media industry's economics were broken – agencies profited from spend, not from results. She built a model where client savings are guaranteed, performance is measured against real business outcomes, and every dollar is accounted for.

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Jenna Borucki (Colgrove)

Jenna Borucki (Colgrove)

Chief Financial Officer

Jenna shapes the financial architecture behind Powers' model – the pricing strategies, client economics, and transparent reporting that make guaranteed savings possible at scale.

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Brian Sypniewski

Brian Sypniewski

Managing Director, Performance Strategy

Brian leads client strategy at Powers, ensuring every media plan is built to deliver results that show up in the P&L – not just in a media report. His expertise spans data analytics, omnichannel performance, investment strategies, and attribution measurement.

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Millie Diaz

Millie Diaz

Managing Director

Millie Diaz leads integrated communications, media strategy, and planning at Powers, ensuring every engagement is built on a foundation of research, analytics, and a clear path to growth. She brings a cross-category fluency shaped by two decades across pharma, consumer healthcare, CPG, and business-to-business.

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Andrea De Marco

Andrea De Marco

Associate Director, Strategy

Andrea brings a rare perspective to media strategy: she's worked both sides of the table. After years on the agency side planning and buying media, she spent time on the client side, which means she knows what it's like to be the person receiving the recommendation, not just the one making it.

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Industry Affiliations

Ad Age
Ad Age
4A's
Indie Agency
Indie Agency
Our Third Place
Our Third Place