
Karlee Hegi – Aubrey, Texas Facility
Frozen Semen Storage and Logistics Technician
Karlee received her Bachelor of Science Degree in Agricultural Economics with a minor in Animal Science, focusing on Equine Reproduction. She grew up on her family's ranch and previously worked for a horse trainer in Florida before joining the SBS team. Karlee works at our Aubrey, TX facility preparing frozen semen for domestic and international distribution as well as managing inventory and incoming shipments. Karlee enjoys showing quarter horses in all around events, breeding and raising foals as well as helping her family with their cattle. Spartacus, her Chihuahua-Jack Russell mix, is never far from her side whether she's showing horses or hanging out on the farm.

Julianna Thawley
Frozen Semen Storage and Logistics Technician
Julianna Thawley, who prefers to go by Jules, earned her Bachelor of Science in Business Administration from Southern New Hampshire University. She began her career in 2017 as a barn hand at the age of 15 and has since transitioned into an administrative role, currently supporting storage and distribution operations. In addition to her work at SBS, Jules owns and operates a photography business, specializing in capturing images of newborn foals for clients each season. Outside of her professional endeavors, she enjoys riding and racing dirt bikes. Jules is enthusiastic about continuing to grow with SBS and looks forward to the opportunities ahead.

Charlotte MacDonald
Frozen Semen Storage and Logistics Technician
Charlotte joined the SBS team in August 2023. As the Frozen Semen Storage and Logistics Technician she assists the Storage and Distribution Manager in shipping, receiving and the monitoring of frozen specimens. Outside of work she enjoys spending time at the beach with her husband and pit-mix Daisy as well as being a part of a local dirt track racing team's pit crew.

Caitlin Kerns
Storage and Distribution Manager
Caitlin received her Bachelor of Science in Animal Science and Equine Science from Penn State University. As our Storage and Distribution Manager, she is in charge of preparing frozen semen shipments for domestic and international distribution, receiving and transferring incoming shipments and maintaining our inventory records as well as maintaining proper liquid nitrogen levels in our many frozen semen tanks. She also assists our clients with their shipping and inventory questions. When not in the lab, she enjoys painting and competing with her terriers in field trials.