David Harry Stewart
Founder & CEO

David is the founder and the face of AGEIST. He is a passionate champion of the modern 50+ lifestyle, and a leading authority on the mindset and aspirations that drive this influential demographic. As the go-to reference on people in our age group, he frequently shares his expertise and insights, with major media publications including WSJ, The Times of London, CNN, South China Morning Post, Forbes and Fortune. He also consults for a wide range of Fortune 500 brands and businesses. An entertaining and lively speaker, he delivered the keynote at The Global Wellness Summit in Singapore, Monocle Quality of Life, HIMMS Las Vegas and many other large scale venues. Before he launched AGEIST, Stewart is an award-winning photographer, whose work includes multiple magazine covers and global advertising campaigns.

Paul Hynek


Paul Hynek has decades of successful experience in finance, technology and entertainment. Paul is a Wharton MBA, an Adjunct Professor of Finance and Accounting at Pepperdine University, and the creator of startup financial projections software that has raised over $1 billion for thousands... and startups. Clearly, he is magic with money. He has significant executive, software, and high tech experience in the US, Europe, and Asia. Paul is a sought-after speaker, having emceed, keynoted, moderated, and spoken at South x Southwest, Wharton / Penn, Harvard, Mensa, BIL, Brink, and numerous technology and startup conferences and events. He’s a grant reviewer for the National Science Foundation. As the son of Dr Alan Hynek, he is probably the world’s foremost authority on aliens.

Ashley Feltner

Director of Brand Partnerships

Ashley is a writer, an artist, and an ideator who has placed storytelling into her process for bringing sales and marketing ideas to life for over 20 years. Her background includes recruiting, training, and content development that provide her a unique perspective and an ability to... authentically connect with individuals from all walks of life. With the desire to place a little humanity into the digital experience, Ashley believes that words do matter, a little empathy goes a long way, and knowing your purpose in life is imperative. Ashley and her husband live in Nashville, TN with two very active teenage daughters and two very lazy field spaniels.

Jonathan Cheung

Head of Creative

A graduate of the renowned School of Fashion at Kingston University in London, Jonathan got his start working for legendary labels Moschino and Armani in Milan. In 2009, he moved to Levi’s and served as Head of Global Design for Men’s & Women’s Levi’s from 2013 through... 2020. He has led creative teams in 6 countries and in 3 languages (English, Cantonese and Italian) and currently resides in Mill Valley, on the quieter side of the Golden Gate Bridge. He joined AGEIST’s board in February 2017 and is now our head of creative. He is rife with Yoda-isms, a committed cultural anthropologist, a denim Jedi and the most terrifyingly voracious reader we’ve ever met.

Taylor Marks

Director of Partnerships

Taylor was born and raised in Pasadena, CA and is a trained chef and holistic health coach. She is AGEIST’s social coordinator, partnerships director, and health science writer.

Isabel von Fluegge

Editorial Writer

Isabel is a writer and brand voice specialist who has overseen the language for companies such as Tiffany & Co., La Mer and Bergdorf Goodman. She’s a strategic storyteller, with an expertise for translating brand strategy into authentic, effective language that people respond to on an... intellectual and emotional level. She especially loves her more anonymous work as a ghostwriter, crafting speeches, book forewords and press quotes for well-known executives, creatives and designers. After a recent move from Brooklyn to Oakland, she’s doing her best to discover California despite pandemic shenanigans. She speaks four languages, has two daughters, one tattoo and knows both the common and Latin names for more plants than she cares to admit.

Gaia Lutz

Head Writer, Content Producer

Gaia Lutz is originally from Brazil and, while working as a journalist in London for five years, actively attempted to acclimate to the weather in England, with limited success. She has worked for Monocle Magazine and Radio in London, where she wrote regularly, produced... a weekly podcast interview series and curated conferences and summits. She is a whiz in multiple languages, with wild wordsmithing skills, riveting storytelling abilities and a warm, personal touch which she brings to all her work. We’re nuts about her at AGEIST. She is now based in Lisbon, where the sun actually does shine, and continues to write and produce content for print, digital, broadcast and live platforms.

Zachary Slobig

Director of Research

Zach is a born questioner (Yes, he was that kid who constantly asked “But WHY?” And nothing much has changed.). He is a journalist, specializing in crafting authentic stories for social impact. He has an odd but impressive ability to utilize data-based research to craft a powerfully relatable... story. The staffs of NPR, WIRED, GOOD Magazine, and Agence-France Presse have been blessed by his presence. As a narrative consultant, he has collaborated with major brands, start-ups, and foundations. He's a sucker for stories of ordinary people doing extraordinary things.

Patricia Garcia-Gomez

Travel Editor

Patricia Garcia-Gomez is a writer, photographer and artist. She has contributed to the Travel Channel and the Discovery Channel and her work is part of the archives of the Tate Modern, the Museum of Arts & Design in New York, the Buhl Collection, and The Harwood ...Museum in New Mexico. When she’s not traveling, she enjoys the somewhat singular activity of open ocean cold water swimming.

Balint Bognar

Merchandise Curator & Content Marketer

Balint Bognar is the ultimate denim dude, with massive menswear design experience at fashion hotspots like Levi Strauss & Co., John Varvatos and Armani Exchange, among others. Currently, we are usng his impressive talent for tapping into the cultural zetigeist to connect us through... our various social channels, run our comprehensive content strategy and build out our ecommerce capabilities. And when we get into the business of selling really amazing merch that everyone will want a piece of, he’ll be our guy.

Sheri Radel Rosenberg

Style Editor

Sheri Radel Rosenberg is a Philly-born, Brooklyn-based writer who explores style, beauty, culture, and midlife with wit, warmth, and wisdom. Her story includes successful forays in the worlds of trend forecasting, ad agency photo production, ...ghostwriting, and strategic messaging development for fashion and beauty brands - all while amassing a slip dress collection that would make any Gen Xer proud. At the dawn of social media, Sheri launched her personal blog–which combines her passion for writing with her style obsession–and she hasn’t looked back. As Style Editor for the AGEIST, she’s inspired by the styles of the 70s and the 90s, along with all the beautiful people she sees daily in NYC.

Science Board of Advisors

Dr. Michael Breus

Diplomate of the American Board of Sleep Medicine

Michael J. Breus, Ph.D., is a Clinical Psychologist and both a Diplomate of the American Board of Sleep Medicine and a Fellow of The American Academy of Sleep Medicine. He is one of only 168 psychologists in the world to have passed the Sleep ...Medical Speciality board without going to Medical School. Dr. Michael Breus was recently named the Top Sleep Specialist in California by Reader's Digest, and one of the 10 most influential people in sleep. Dr. Breus is on the clinical advisory board of The Dr. Oz Show and on the show.

Dr. Ruth Zimmer

Board Certified Anesthesiologist

Dr. Ruth Zimmer, MD is a board certified anesthesiologist with over 30 years of experience in the medical field. Additional to anesthesiology, she has studied integrative medicine with a food first approach, at Andrew Weil Center for Integrative Medicine, and has deep experience ... with the management, processes and procedures of large hospital corporations.

Board of Advisors

Leslie Blodgett

Founder & Former CEO of bareMinerals

Alex von Bidder

Rob Angel

Founder of Pictionary, Author

John Stanton

Co-Founder at Chosen & Momentum Ventures

Andrea Cullen

Managing Director of Bright Link Ventures

Matt Hirst

West SF & Co-Founder of AGEIST