Our Team

A People First Story

At Grey Horse, we utilize our experience in editorial, design, social media, and project management to develop a strategic plan to reach your ideal audience. We come from industries like journalism, copywriting, event management, content production, and the performing arts – which give us a unique, both-sides vision to executing and explaining a client’s story.

Our firm’s namesake, Copenhagen (aka Two Rivers Nick, his more formal name) is the 32-year-old quarter horse that has been in our founder Kate Gardiner’s life since she was seventeen years old. An experienced equestrian, Copenhagen retired sometime around 2017 and lives on a 200-acre sheep farm in Lake Geneva, Wisconsin. There, he hangs out with his best friends (a donkey named George and a pony named Dave), occasionally appearing in weddings, photo shoots, sheepdog competitions, and other events you may find at Midwestern farms.

Who We Are

Kate Gardiner

Founder & CEO

A former journalist, Kate has used her expertise in crisis situations and storytelling to amplify voices that must be heard through her work with Grey Horse. She has earned awards from Forbes 30 under 30 and the Emmys committee, among others. She is an experienced equestrian, and she has ridden horses all over the world–a significant part of her ever-curious travels.

Annmarie Pisano

Director of Operations & Executive Producer

As an executive producer, Annmarie has created events that matter: conversations, conferences, dinners, press events, launches, and even booth activations that go well beyond their allotted fifteen minutes. Previous to Grey Horse, she worked in documentary and commercial film production, making features that have gone onto theatrical and major festival runs, broadcast commercials, PSAs, and more.

Nick Slater

Head of Strategy

Nick is a strategist and editor with nearly 15 years of experience. He previously served as managing editor of Current Affairs, executive editor of cMD, and online editor of Word Vietnam. He is a former professional scuba diver.

Paula Dixon

Social Media Director

With nearly a decade of experience in social media strategy, public relations, website management and content development, and graphic design, Paula guides our clients through the shifting demands of the internet. Her communications background also includes time spent in roles at august institutions like the Boston Public Library and the Boston Center for the Arts.

Sarah Manning

Account Manager

Sarah specializes in ghostwriting services and unique creative content, able to make the most complex topic into an arresting, compelling story. In addition to creating magic with her pen, she's a two-time MacDowell Fellow in Composition and a professional noisemaker on saxophone.

Tam Sackman


Tam provides support, however it’s needed, with keys, calendars, event coordination, and/or cat wrangling. (She has two of her own, they’re on Instagram, and they’re perfect.) With a background assisting A-list Hollywood stars, Tam is also a writer, artist manager, and producer.