jon sebastiani: managing partner
Jon Sebastiani founded Sonoma Brands Capital, a specialist growth equity firm, in late 2015 and as Managing Partner currently oversees all aspects of the Firm’s investment strategy and portfolio management. Prior to Sonoma Brands, Jon was Founder & CEO of KRAVE Pure Foods. The KRAVE journey culminated in the acquisition by The Hershey Company in 2015. Prior to KRAVE, Jon was the President of Viansa Winery, a destination winery in Sonoma’s Carneros region.
Jon received his B.S. in Economics from Santa Clara University and his dual M.B.A from the Haas School of Business, University of California Berkeley and Columbia Business School. Jon currently lives in Sonoma with his wife, Carol, and daughter, Alexandra.
Chase Anderson: General Manager
Chase Anderson is entering his fourth season with the Sonoma Stompers and his first as General Manager. Anderson began his journey with the Stompers as an intern in 2022 before being promoted to Operations Manager in 2023. Now, as General Manager, he leads Sonoma County’s favorite club, overseeing both business and baseball operations.
Over the past three seasons, Anderson has played a key role in the day-to-day stadium operations, including game execution, sponsorships, season ticket holders, group sales, visiting clubs, and vendor relations. In his new role, he is responsible for the organization’s business strategy, operational success, and on-field excellence as he continues to drive the Stompers forward.
Charlie Hale: Special Assistant to General Manager
Charlie, frequently called "Chaz", is continuing his fourth season in the front office as Special Assistant to the GM. As Special Assistant Charlie has worked on projects to enhance the fan experience and player development for the organization. Charlie has led the development of the Sonoma Stompers Wine Pouring experience, which focuses on partnering with Sonoma County's premier vintners, showcasing them in a tasting room style atmosphere with a Stompers twist. All proceeds for the partnership go back to supporting the Stompers Player Meal Fund, which supports feeding Stompers players with post game meals throughout the summer. Prior to joining the Stompers Charlie worked with the SF Giants, Woodlands Market, and Bread & Roses. Feel free to flag Chaz down at "The Arnold" as he is always excited to talk Stompers Baseball!
Miranda Ronan: Marketing & Media Manager
Miranda Ronan is entering her third season with the Sonoma Stompers, bringing her expertise in media marketing, graphic design, and content creation. A soon-to-be graduate of Sonoma State University, she is earning her degree in media marketing while also pursuing her passion for music. As the driving force behind the Stompers’ social media presence, Ronan develops and implements marketing strategies to engage fans and grow the team’s brand. In addition to her role with the Stompers, she also serves as a Marketing and Production Assistant for Girl, How’d You Get That Gig? with Amy Gutierrez.
Trey dunia: Director of Entertainment & EmCEE
A beloved figure in Sonoma County sports, Trey Dunia has been entertaining Stompers fans since 2015 with his infectious energy and unmistakable voice. As the On-Field Emcee for the Stompers and the stadium voice for SRJC Bear Cubs' basketball, football, softball, and volleyball, as well as Sonoma State basketball, he’s a familiar and cherished presence in local sports. His experience even includes time as the PA announcer for the SF Giants' AAA affiliate, the Sacramento River Cats. When he's not behind the mic, you can find him training for the CrossFit Open, bringing the same passion and dedication to fitness as he does to the game. A true fan favorite, “Hey Trey” is sure to keep the excitement alive at the ballpark!
Kiran Costa: DIRECTOR OF BROADCASTING & Media Relations
Costa is entering his second full season as the Director of Broadcasting and the play-by-play voice of the Sonoma Stompers. A Bay Area native, Costa graduated from Los Altos High School in 2022 and is currently pursuing a degree in Broadcast & Digital Journalism at the S.I. Newhouse School of Public Communications at Syracuse University. At SU, he is actively involved with multiple campus radio and TV stations, honing his skills in sports broadcasting. Costa brings his passion and expertise to the Stompers as he continues to lead the team’s streaming and broadcast coverage for the upcoming season.
Mike & Amber Brown : Host Family Coordinators
Lifelong residents of Sonoma County, Mike and Amber Brown have been dedicated to Sonoma youth baseball for over a decade. Mike served as Sonoma Little League President for 3 years and has coached various teams in Sonoma Little League. Amber has worked among the community supporting youth sports and is an advocate for special needs youth in the area. They both share a passion for growing the game of baseball in Sonoma.
Caitlyn McDuffee : Controller
Caitlyn is entering her first season in the Front Office with the Sonoma Stompers and currently serves as the team’s Controller. Caitlyn graduated from Saint Mary’s College of California with a B.S. in Business Administration with a concentration in Finance and a minor in English. Beyond working with the Stompers, Caitlyn is also the Controller at Sonoma Brands Capital. A fun fact about Caitlyn – before starting work in accounting, her first job was as a youth softball umpire!
Dr. larry adams: team chiropractor
Adams has been the Stompers' team chiropractor since 2015, giving treatment to players both at the field and at his office in downtown Sonoma. Born and raised in Sonoma, Adams got his Doctorate in Chiropractic from Life Chiropractic West in 1996, graduating Summa Cum Laude. He did his graduate work at Brigham Young University, earning a degree in Health Sciences. His son, Dax, is regularly a bat boy with the Stompers.
Dr. Avinash Ramchandani: team Doctor
Dr. Avinash Ramchandani is a Physical Medicine and Rehabilitation physician who has always had an interest in sports, especially baseball since he was a kid. He is a passionate San Francisco Giants fan and has seen and treated several professional athletes over his 10 years since he finished his fellowship. He grew up in the East Bay and went to UC Berkeley prior to completing medical school at Rosalind Franklin University - The Chicago Medical School in Illinois, did a residency in Physical Medicine and Rehabilitation at Stanford Hospital and then completed his fellowship in Pain management at Oregon Health & Sciences University in Portland, OR. He worked in Texas for 7 years prior to moving to the Santa Rosa area, where he now resides with his wife and two children and practices at the Providence Medical Group. During his time in Texas, he also completed an Executive MBA at the Johnson School of Business at Cornell University. He is the host of “The Painless Health Podcast,” enjoys running and coaching in the Cal Ripken Youth Baseball League!
ADVISORY BOARD
EDDIE MORA-LOERA: Senior ADVISOR
A Bay Area native, Eddie Mora-Loera was raised in Oakland and is an alumnus of Bishop O’Dowd High School. Mora-Loera has built a notable career with the Sonoma Stompers, beginning as a Stompers independent league player. Over four seasons, he played 158 games, ranking fifth in franchise history, and helped lead the team to a championship before transitioning to the front office in 2018.
As General Manager, Mora-Loera spearheaded the transformation of the Stompers from a professional independent baseball team to a premier summer wood bat collegiate club. Under his leadership, the Stompers have become a top destination for the nation’s best collegiate athletes while delivering an immersive, family-friendly minor league experience for fans.
Mora-Loera is currently completing his MBA at the University of California, Berkeley, Haas School of Business.