Bob Sinclair
General Manager for 11 years and counting, Bob holds an engineering degree from the University of Iowa and a MBA from the University of Dayton. Bob and his wife, Susan, live outside Williamsburg with their four children: Emma, George, Clara, and Eleanor. When not working or spending time with his family, you can find Bob playing rugby, running and reading.

Jason Becker

Our Controller is Jason Becker.  He has 9 years of experience as a CPA and resides in Williamsburg with his wife, Amy, and two young children; daughter, Channing, and son, Griffin.  When Jason is away from work he enjoys golf, outdoor activities, Hawkeye sports and spending time with his family.

Cathy Masterson
For 11 years, Cathy has been STI Office Manager and has attended two John Deere Accounting Schools, Machine Inventory Management School and a Time and Goals Management Class. Cathy lives in What Cheer and enjoys dancing, walking, reading, camping and spending time with her daughter, Kyndra, when she's home from college.

Staci Jasper
Staci wears multiple hats at STI as our Sales Coordinator, Receptionist and the office support staff for our Technology Department.  Staci brings five years of banking and 10 years of retail sales experience to STI. She and her husband, David, live in rural Hedrick with their two boys, Caleb and Joshua. In her spare time, Staci enjoys flower gardening, cooking, baking and doing crafts.

Darian Graff
Darian, our webmaster, newsletter designer, party planner and advertising person, holds a broadcasting degree from Northwest Missouri State University. Prior to accepting a part-time position at STI, she was a stay-at-home mother, but has previous experience in the accounting and newspaper fields.  Darian and her husband, Jeff, have three children:  Lainey, Justin and Jessica.  Darian also has a son, Clint.  She enjoys stamping, camping, NASCAR and being with her family.

Sarena Ryals

Sarena is an Office Assistant/Receptionist at STI. She has 12 years of experience in office operations from places like B & L Welding in Keswick and Steinke Farms in Gibson. She was also the manager at Ultimate Illusion Hair Salon in Oskaloosa.  Sarena resides in What Cheer with her husband, Ray, and son, Levi, age 14. In her spare time she enjoys photos, art and anything outside on a sunny day. When asked if there was anything else she wanted to say, she commented that she is "Just following in my father's footsteps." Sarena is the daughter of the late Kevin Shaull who you'll remember as the Sales Manager at STI before he lost his courageous battle with cancer in 2005.

Vicki Damerval

Vicki is a Receptionist/Bookkeeper for STI.  She has 30+ years of experience in Customer Service including being the first manager of the Casey's Store in Sigourney.  She has also worked as an optometric assistant/office manager, a bookkeeper and most recently as a cashier at the Sigourney BP station.  Vicki is married to Jerome Damerval and resides in Sigourney.  She has two children; Dana and Justin and two stepchildren; Craig and Janet along with three grandchildren; Hayley, Jasmine, Joselyn and four step-grandchildren; Christian, Braxton, Kaitlyn and Brittany.  In her spare time, Vicki enjoys reading and doing cross stitch.  She also enjoys weekend jaunts with her husband, touring new wineries, taking care of her grandkids, helping son, Justin, with auctions and going to Figure 8 races.

Ruth Manchester

Ruth is a part-time Receptionist with STI.  She resides in Sigourney with her husband, Phillip, and two daughters, Amanda & Alyssa.  When Ruth is not at STI, you might find her at the Keokuk County Highway Department where she holds down several positions including:  workman's comp coordinator, bridge inspector, and administrative assistant.  She also has a part-time position at the Sigourney Pizza Ranch.  When Ruth is not at one of her 3 jobs, you'll find her at one of her daughters' sporting events or at one of her many volunteer positions with the City, Sigourney Pride, her church, the American Cancer Society or the  Sigourney Community School Board.  In her free time, she enjoys walking, camping and aerobics.

Holly Albert

Holly has come back to work at STI during her summer break from college.  She is the daughter of STI Salesman Jeff (& Mary) Albert.  Holly attends Buenva Vista University and is working toward a degree in Human Services.  In her spare time, Holly enjoys scrapbooking, golfing and hanging out with family & friends.