Chatham Professor, Alumni Among Pittsburgh Magazine’s 2025 “40 Under 40” Honorees
Chatham University professor Keratiloe Mogotsi, Ph.D., and alumni Rachel Wein Antin ’13, Diarra Imani Clarke ’18, Ryan Rydzewski, MFACW ’15, Andrea Jacobs Stevens, MSBio ’12, and Debra Titus, MAT ’09, were named among Pittsburgh Magazine’s 2025 40 Under 40 Honorees.
Dr. Keratiloe Mogotsi, an assistant professor of management and the associate dean of Chatham’s School of Business & Enterprise, joined the University in 2023. Her academic interests include philanthropy, entrepreneurship, and nonprofit management. She draws on her experience working in government, business, and nonprofits.
Her past projects include serving as program director for executive education at the Centre on African Philanthropy and Social Investment at the Wits Business School in South Africa; a 2023 female academic leaders fellow at the University of the Witwatersrand; president of the Women in Nielsen's CSI initiative; the African heritage program lead for the Mandela Institute for Development Studies; and working with the Nielsen Cares program in Africa.
Rachel Antin, an alumna of Chatham’s bachelor of science in nursing program, is the founder and executive director of One Day to Remember, a nonprofit which aims to give cancer patients and their families meaningful experiences. Founded in 2016, the organization has served over 500 recipients, and these outings come at no cost to the participating families.
Diarra Imani Clarke is the founder and CEO of The Mosaic Institute, where she creates programs at the intersection of science and soul, and teaching cultural communications to young adults. A poet, writer and musician, Clarke “motivates artists who want to reimagine the creative learning experience,” Pittsburgh Magazine says. She had the opportunity to study and teach women’s entrepreneurship in Ghana and Taiwan after designing her major of women’s entrepreneurship and institutional culture at Chatham.
Ryan Rydzewski is the communications officer at The Grable Foundation, a philanthropic organization that supports kids and learning in western Pennsylvania. He also co-wrote “When You Wonder, You’re Learning: Mister Rogers’ Enduring Lessons for Raising Creative, Curious, Caring Kids” with Gregg Behr.
Andrea Jacobs Stevens is the co-founder of Penn State Greater Allegheny’s Undergraduate Clinical Research Training program, which provides workforce opportunities in clinical research to students at the McKeesport campus and other Penn State locations. She also works does career readiness for elementary and high school students in biomedical sciences.
Debra Titus is the associate principal and co-founder of Dominus High School, a charter school billed as Pittsburgh’s first entrepreneurial high school. Her experience includes 10 years of teaching at Pittsburgh Public Schools, co-owning the cosmetics company D&K Whip Appeal, and founding the SHINE Society of Excellence, a mentoring and tutoring organization she began in 2006 while she was a student at Chatham.
Nominees for Pittsburgh Magazine’s 2025 40 Under 40 list must be 39 years old or younger as of November 1, 2025, and live and work in the greater Pittsburgh area. Honorees are selected by a judging panel comprised of community leaders, 40 Under 40 alumni, and Pittsburgh Magazine staff. Learn more at pittsburghmagazine.com.
This announcement was updated on Dec. 15, 2025