who’s who

Executive Director/Producer

Lauren Cosio Kotkowski

Lauren has been hard at work turning her dream into a reality! After moving back to San Antonio in 2019 from New York City, Lauren noticed there was an opportunity to add to the professional theatre scene her hometown. With help from her connections in the Broadway world, she intends to bring the New York City professional musical theatre experience to the larger San Antonio community!

Lauren Cosio was born and raised in San Antonio, TX and is a graduate of Clark High School. She attended The Boston Conservatory where she received her Bachelor of Music in Vocal Performance with a specialization in Opera and New York University where she graduated with a Master of Music in Musical Theatre.

During her time as a university student, Lauren traveled the world and performed in various operas, including: The Marriage of Figaro where she played the role of Susanna (Florence Performing Arts Festival, Italy) and The Magic Flute where she played the role of Second Spirit (International Performing Arts Festival, Germany). She also made her Carnegie Hall debut in the role of Zerlina in Mozart’s opera, Don Giovanni.

Upon graduation, Lauren had the privilege of working professionally at a number of reputable regional theaters including: The Barrington Stage Company in Pittsfield, MA; the North Shore Music Theatre in Beverly, MA; the John W. Engeman Theater in Northport, NY; the Westchester Broadway Theater in Elmsford, NY; and many others. Her favorite role to play was Maria in West Side Story.

When not on stage, Lauren taught students ranging in age, from kindergarten to high school, at the Performers Theatre Workshop in New Jersey, one of the most reputable performing arts schools in the New York City and New Jersey area, for more than four years. Some of Lauren’s personal students have ended up performing on Broadway as child roles in Frozen, School of Rock, and several national tours.

She is incredibly proud to spearhead this new venture as founder & producing artistic director of San Antonio Broadway Theatre!


Eithan kotkowski

Dr. Eithan Kotkowski is a medical doctor specializing in neurology with a Ph.D. in neuroimaging. He is also the husband of Lauren Cosio Kotkowski. As the co-producer of San Antonio Broadway Theatre, Dr. Kotkowski brings a unique blend of out-of-the-box expertise and a passion for the arts and the San Antonio community. Growing up immersed in the world of opera and Broadway musicals, his early exposure ignited a profound admiration for the art form. Before pursuing his medical career, he made significant contributions to education as a dual-language elementary school teacher in South Austin. Eithan holds a bachelor’s degree in Psychology from UT Austin and proudly hails from El Paso, TX.

While not a singer or performer himself, Dr. Kotkowski’s remarkable skill as a public speaker, honed through delivering numerous lectures in his medical and teaching career, enriches his involvement with SABT. His diverse background and unwavering dedication play a pivotal role in grounding SABT to its intended audiences, helping make pragmatic decisions, and effectively managing its administration.

Operations Manager

Jillian sainz

Jillian Sainz is a San Antonio local actress and creative who contributes to the operations at SABT. She is deeply passionate about our mission statement, particularly the importance of contributing to the growth and support of community theatre in San Antonio. She has starred in many local theatre productions, most recently as Mimi Marquez in SABT’s production of RENT..