Senior Leadership Team

Eric Tucker

President & CEO


Since 1998, Eric has served in senior leadership capacities at YMCAs across the country, including in Massachusetts, New Hampshire, Idaho, Connecticut and Missouri.  Eric has a Master’s Degree in Organizational Management & Leadership from Springfield College (Massachusetts) and a Bachelor’s Degree in History Education from Southern Illinois University at Carbondale.  He is an Air Force veteran and member of Rotary International, Shriners and Lions Club.  Eric is also a YMCA of the USA faculty member and trainer in Leading and Coaching Others.  Eric is an avid outdoorsman who enjoys international travel, hiking, biking and skiing with his wife Erin and their two daughters.  

Mark Sherman

Finance Director


Mark Sherman joined our team after spending three years working in public accounting as an audit associate for Eide Bailly in Aberdeen, SD. Mark obtained a Bachelor’s Degree in Professional Accounting from Northern State University in 2013. Mark grew up in Goodwin, SD and enjoys all sports especially baseball, football and wrestling. In his spare time he enjoys traveling with his wife Katie and watching his favorite teams the New York Yankees and Indianapolis Colts. 

Ashley Wolf

Operations Director


Ashley joins us after spending eight years at the Aberdeen Family YMCA in Aberdeen, SD. Leaving her position as the Senior Director of Youth Development in the fall of 2017, she previously led the departments of Membership, Marketing, Youth Development, and Aquatics. Ashley is a Multi-Team Leader through the YMCA of the USA. She obtained a Bachelor's Degree in Sports Management through Southwest Minnesota State University in 2009.

In her spare time, Ashley enjoys spending time with her husband Brad and their two children. 

YMCA Camp Leif Ericson Leadership

Mike Murphy

Executive Director


Mike has been involved with camp since 1997 and has served as Director since 2013.  Mike was born and raised in Sioux Falls and attended South Dakota State University where he earned a Bachelor of Science Degree in Biology and a Bachelor of Science Degree in Civil Engineering.   He is also a registered EMT-B and ACCT Level II Challenge Course Facilitator.  As a former camper, Mike loves to share the YMCA Camp experience with others.  When he is not at camp, Mike enjoys spending time with his wife and son, running, and volunteering in the community.  

Childcare Leadership

Sarah Skarski

Child Development Center Director


Sarah has several years of YMCA experience working directly with children of all ages, particularly six weeks through five years old. Working with and teaching children is truly her passion.  Sarah holds two Bachelor's Degrees, one in Early Childhood and the other in Elementary Education, each from the University of Northern Iowa.  Sarah and her husband, Jeff, reside in Sioux Falls with their three children. 

Youth Development Leadership

Sarah Wittrock

Senior Program Director


Sarah has been with the Sioux Falls Family YMCA since July 2013, previously serving with the YMCA of Greater Kansas City.  After receiving her degree in elementary education, Sarah served several churches as a Director of Christian Education overseeing and developing children's, youth, and adult programming in Iowa, Kansas and Michigan. She has a passion for youth and helping them to grow mentally, physically and spiritually.  In her spare time, Sarah enjoys spending time outdoors camping, hiking and biking with her husband, Chris, and four-legged baby, Grace Rose.

Bobbi Tellinghuisen

Youth Development Coordinator - Y-CLUB Afterschool Programs


Bobbi is a North Dakota State University graduate with a Bachelor of Science in Human Development and Family Science, where she spent 5 years at the YMCA of Cass and Clay Counties. She spent two years as a staff at a child care site, two as a site supervisor and one as a site director. She and her husband Justin were in Spencer Iowa for just over a year, where they added their Husky puppy Mya to the family. She enjoys reading, being on the water, taking Mya on runs, and anything else she and Justin can do outdoors together. She is very happy to be with a YMCA family!

Association Support Team

Janell Slaight

Controller & HR Support


Janell initially joined the Sioux Falls YMCA as a member.  In October of 1984, she began working full-time in the accounting office as the assistant to the Business Manager.   In 1999, Janell was promoted to the Business Manager where she and her hard-working staff ensure that the financial integrity of the YMCA is maintained.  Her favorite part about working at the Y is being able to witness the positive impact that the programs have on the adults and children being served.  In her spare time Janell enjoys camping and spending time with friends and family.

Ellen Stewart

Operations Support Specialist


Ellen provides operational and registration support to YMCA programs including camp, youth sports and membership. Ellen attended the University of Sioux Falls and has a degree in Social Work. She has now settled in Sioux Falls with her husband, Gordon, and their two children, Ember and Moses. Outside of work, Ellen is involved in youth and women’s ministry and advocates for different areas of tribal policy.