jon sebastiani: managing partner

Jon Sebastiani is a graduate of Santa Clara University with a Bachelor’s degree in Economics and holds a dual MBA from the Haas School of Business at UC Berkeley and Columbia University. His expertise in establishing and growing successful food brands has been cultivated through years of managing operations in previous positions, as managing partner of, President of the premier California winery destination Viansa Winery, and most recently leading the jerky renaissance as Founder of KRAVE Jerky. In 2016, following the acquisition of KRAVE Jerky by The Hershey Company, Sebastiani launched Sonoma Brands. Sonoma Brands is a one-of-a-kind consumer products incubator and venture fund, set to revitalize stagnant industry categories with innovation. Sonoma Brands has since invested in Dang Foods and has launched two brands under its incubator umbrella; ZÜPA NOMA and SmashMallow. For more information on Jon and Sonoma Brands, please visit


Theo runs business operations for the Stompers, including corporate partnerships, media/public relations, and front office management. He also mans personnel acquisition, development, and scouting. Theo negotiated the deal that made the Stompers the subject of the book “The Only Rule Is It Has To Work,” signed Jose Canseco to a two-day contract, and signed the first openly gay player in the history of professional baseball. Previously, he helped launch the San Rafael Pacifics, reported on the San Francisco Giants for the Bay Area News Group, and worked on ESPN events, including Sunday Night Baseball, the MLB All-Star Game, and Monday Night Football. He has won multiple awards for his work as a sports journalist.



Jen Ramos: Assistant General Manager

Jen Ramos is a native of Northern California's Central Valley, hailing from the Gateway to Yosemite and attending college at Oakland's Mills College, where she received a degree in English and Creative Writing with a minor in journalism. She had a short stint in Los Angeles, attending the University of Southern California for a master's in journalism, before returning to the better half of California upon completing the degree.

Prior to joining the Stompers, she held different positions at different places--she was an intern for the San Jose Sharks during the 2013-14 season and has written for numerous publications, including Beyond the Box Score, Purple Row, and The Hardball Times. One of these days, she'll finally finish that baseball novel she's been working on since she was 17.


KElsey minigan: Special assistant to the Managing Partner

As Consumer Relations Manager and Sonoma native, Kelsey truly defines & represents the Sonoma Stompers and Sonoma Brands as a community pillar. Excited to firmly establish her hometown as a hub of entrepreneurship, Kelsey manages every interaction as the first point of contact and plays a supporting, cross-functional role in the efforts of the Sonoma Brands team, and is the point person on all Stompers-related Managing Partner Jon Sebastiani.

Kelsey completed her BA in Environmental Studies at UCSB before heading back to the Bay to work for the San Francisco Giants in Luxury Sales & Client Relations. After the incredible 2014 season came to a close, Kelsey took a position with Yelp as an Account Executive in Sales. During her time there, she focused on helping over 3,000 small to medium sized businesses utilize Yelp as a tool to support growth – and will likewise support the Sonoma Brands portfolio.


Tim assists the general manager and coaching staff in player evaluation and scouting. He also broadcasts for the Stompers on and on the TuneIn Radio app, which is available on Apple and Android devices. He will also broadcast select games on SVTV 27 Comcast Cable. He was previously the voice of Sonoma Valley High School sports, University of San Francisco Baseball and the Dunedin Blue Jays. He has also worked as a producer and editor at KTVU-2 FOX in Oakland.




Trey Dunia is the voice the Sonoma Stompers at Peoples Home Equity Ballpark at Arnold Field. A member of the National Association of Sports Public Address Announcers, his voice is well known in the Sonoma County sports scene. In addition to announcing for the Stompers, he also currently announces for Santa Rosa Junior College, the North Bay Rattlers football team, Analy High School, the West County Tigers and numerous District 35 Little League teams.

LAURENCE J. ADAMS, DC, DACNB: 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.


Ben Lindbergh is a Special Assistant to the General Manager and a baseball writer at Ben Simmon’s The Ringer.  In the past, he has been a contributor at Bloomberg Sports, Grantland, and, in addition to serving as Editor-In-Chief at Baseball Prospectus, and was a staff writer with Nate Silver's FiveThirtyEight. He co-authored "Extra Innings: More Baseball Between The Numbers," won the SABR Greg Spira Award for his research on pitch framing, and wrote "The Only Rule Is It Has To Work" with Sam Miller about the 2015 Sonoma Stompers season. You can purchase the book here.


Sam Miller is a Special Assistant to the General Manager, and staff write for ESPN. Formerly the Editor-In-Chief of Baseball Prospectus, Miller has also written for ESPN The Magazine and the Orange County Register. He's the former co-hosts the “Effectively Wild” daily baseball podcast with Ben Lindbergh, who is also his co-author for “The Only Rule Is It Has To Work,” which is about Sam and Ben’s 2015 boots-on-the-ground experience in the Sonoma Stompers front office. It can be purchased here.