Mercedes LeDonna and Shawn Kellogg have been teaching and performing together for many years. They organized festivals, summer camps, and workshops together and created and performed in several independent full-length shows as well as with their own acts for a variety of events. 

They founded Pop-Up Movement in 2019 and are thrilled to embark on this movement mission! 

Learn More About Their Story Here!

Mercedes (Sadie) LeDonna, CPT

Sadie LeDonna has performed as an aerialist, clown and acrobat around the Pacific Northwest since age 15, debuting on the aerial hoop in a New Old Time Chautauqua show. She has created independent shows, toured with the New Old Time Chautauqua and worked as a part of smaller companies.

She has received training in aerial arts, acrobatics, dance, and clowning in San Francisco CA, Seattle WA, Brattleboro VT, and Quebec City.  She also studied social circus with Cirque De Soleils’ social circus training company, Cirque du Monde. She aims to bring a joy of movement and skills contributing to physical well-being to as many people as possible. She also teaches and performs for the UMO School of Physical Theater on Vashon Island.

Sadie is a certified ACE Personal Trainer and focuses on finding happiness through health and fitness in her 1 on 1 and group sessions.  

Shawn Kellogg 

Shawn has been studying movement and performing circus arts since 2010. He trained intensively at the San Francisco Circus Center and Ecole De Cirque de Québec. He also studied social circus with Cirque De Soleil’s social circus training company Cirque du Monde. He specializes in hand balancing, ground acrobatics, and juggling. Shawn has created independent shows, toured with the New Old Time Chautauqua and worked in smaller companies.

Shawn is also a school certified structural integration practitioner and has studied kinesiology at The Pacific Center for Awareness and Bodywork as well as with Anatomy Trains Structural Integration. He has also studied osteopathically derived manual therapy techniques, functional movement training and developmental movement patterns. He loves reading contemporary research on the neuroscience of pain and how to optimize physical performance. 

He has worked with youth, teens and adults to better their movement, posture, and physical connection since 2012. He also works as a coach and performer at the UMO School of Physical Arts on Vashon Island.


Sadie and Shawn recently visited our local elementary school to lead our students through a Circus Arts Workshop. The day was filled with movement, play, and laughter – leaving each and every one of our students feeling excited about their time in class and eager to learn more. The way in which Sadie and Shawn engaged ALL of our students was really a testament to their ability to make circus arts accessible to a wide range of ages and abilities. Our school would be lucky to have them back and we would highly recommend their workshop for students and adults alike!

-Alex Craighead, Chautuaqua Elementary School PE Teacher

Shawn and Sadie have been working with both of my children for years. Having worked with many coaches, I can hands down say that Sadie and Shawn are some of the best my we have worked with. Their commitment to the craft mingles with their playful and loving personalities to generate an environment that inspires both of my kids every week.

-Nekole Shapiro, Parent

Unexpectedly Shawn and Sadie go beyond the standard coaches! Yes, they have strong skills that they translate well to kids, I expect this, but Shawn is also a caring and deeply observant person.  Making sure my daughter has fun and also watching how her body subtly moves to prevent injury, accommodating just enough when she is tired or overwhelmed, working with her to move beyond her perceived limitations.

-Michelle Mickle, Parent