Certifications & Professional Affiliations
- Member, National Notary Association
Logan Sisco
- Administrative Assistant
- lsisco@athertoncpas.com
Logan Sisco serves as an Administrative Assistant at Atherton & Associates, supporting the firm’s tax professionals, leadership team, and daily operations through organized workflow coordination and client-focused administrative support. Acting as a key connection point between clients and the tax team, Logan helps manage the administrative side of tax planning and preparation so associates and advisors can remain focused on delivering timely, accurate service.
His responsibilities include office operations, scheduling, workflow optimization, document management, and client-facing coordination across multiple areas of the firm. Logan works closely with the tax team and firm leadership to support internal processes, maintain communication flow, and help ensure deadlines and deliverables stay on track during busy compliance and planning periods.
Known for his approachable and welcoming style, Logan values creating a positive experience for both clients and team members. He serves as an important first line of support for day-to-day troubleshooting and operational coordination, helping maintain efficiency across firmwide operations while supporting Atherton’s commitment to responsive, relationship-driven service.
With experience supporting administrative operations in a professional services environment, Logan continues building his knowledge of public accounting processes and client service while contributing to the firm’s collaborative and service-oriented culture. Outside of work, he enjoys spending time with his wife and daughter and being involved at Holy Family Catholic Church in Modesto.
His responsibilities include office operations, scheduling, workflow optimization, document management, and client-facing coordination across multiple areas of the firm. Logan works closely with the tax team and firm leadership to support internal processes, maintain communication flow, and help ensure deadlines and deliverables stay on track during busy compliance and planning periods.
Known for his approachable and welcoming style, Logan values creating a positive experience for both clients and team members. He serves as an important first line of support for day-to-day troubleshooting and operational coordination, helping maintain efficiency across firmwide operations while supporting Atherton’s commitment to responsive, relationship-driven service.
With experience supporting administrative operations in a professional services environment, Logan continues building his knowledge of public accounting processes and client service while contributing to the firm’s collaborative and service-oriented culture. Outside of work, he enjoys spending time with his wife and daughter and being involved at Holy Family Catholic Church in Modesto.
