Mason Staff Senate

Group: Awards and Engagement Committee

Katherine Trejo

Kat Trejo, Staff Senator and ADVANCE Success Coach, Student Success Coaching

Title: ADVANCE Success Coach

Department: Student Success Coaching

Phone: 703-993-6540

Groups: Awards and Engagement Committee, Fairfax Campus

Joined Mason in 2023

Joined Staff Senate in 2025

I love working at Mason because I love being able to support students at my alma mater as they build their student journey here especially as a marginalized identity

I joined the Staff Senate to help better support staff so they can better support their offices and audiences especially with topics not commonly discussed. I also wanted to learn more about the gaps we are seeing across the university and how we, as Staff Senate, can help mitigate them.

Jill Manuel

Title: Exploratory Academic Advisor

Department: Undergraduate Education

Groups: Awards and Engagement Committee, Fairfax Campus

Sarah Alharshan

Sarah Alharshan. Photo by: Creative Services/ George Mason University

Title: Administrative Specialist

Department: College of Engineering and Computing

Phone: 703-993-4871

Groups: Awards and Engagement Committee, SciTech Campus

Joined Mason in 2022

I joined Staff Senate in 2025

I love Mason because of its diverse and inclusive community. I don’t feel different here—I feel welcomed and appreciated. Working with both students and colleagues from many backgrounds enriches my day-to-day experience and fosters a sense of collaboration, learning, and mutual respect. The supportive environment and teamwork within the department truly reflect the spirit of Mason.

I joined the Staff Senate because I want to support Mason staff at a broader level. I believe in advocating for our needs, sharing our voices, and contributing to a more connected campus. I want to help address concerns, learn from others, and offer my own experience as part of a meaningful and supportive community. I also enjoy the opportunity to be involved in initiatives that positively impact the university.

Donna Tressler

Title: Associate Director of Administration

Department: SciTech Campus Executive Office

Phone: 703-993-8355

Groups: Awards and Engagement Committee, SciTech Campus

Position Title: Associate Director of Administration

Current Department: SciTech Campus Executive Office 

Joined Mason in 2014

I joined Staff Senate in 2024

I love Mason because the University provides vast opportunities for personal and professional growth, continued education, and to work with a diverse group of people while maintaining work-life balance.

I joined the Staff Senate because it is an opportunity to represent and advocate for my Science and Technology Campus colleagues.

Stephanie Atkins

Title: Program Office Manager

Department: Mason LIFE Program, College of Education and Human Development

Phone: 703-993-3905

Groups: Executive Committee, Awards and Engagement Committee, Fairfax Campus

Position Title: Mason LIFE Program Office Manager

Current Department: Mason LIFE Program, Division of Special Education and disAbility Research, CEHD

Joined Mason in 2015

I joined Staff Senate in 2015 and served until 2022. I was reelected in 2024.

I love Mason because I love the diversity of the students, faculty, and staff.  There really does seem to be something for everyone here and it truly is a strength of this university.  We are definitely all together different.   

I joined because now that I have completed my graduate degree, one of the many benefits of being on the staff here at Mason, I’m ready to continue to help engage constituents, educate the Mason community, and advocate for the needs of staff.  Working with this robust group of staff allows me the opportunity to connect with the university community, working to enhance the lives of fellow staff, as we strive to make Mason the best possible place to learn, work, and achieve success.

Profile of a Senator: Stephanie Atkins (February 2025)

Jeremiah Garcia

Title: Assistant Director

Department: Mason Card Office

Phone: 703-993-2477

Groups: Awards and Engagement Committee, Executive Committee, Fairfax Campus

Position Title: Assistant Director, Mason Card Office

Current Department: Auxiliary Services and Operations

Previous Departments worked for: Civil, Environmental, and Infrastructure Engineering, and Undergraduate Education, Office of the Provost

Joined Mason in 2022.

I love Mason because Mason has an amazing culture, staffed by amazing and kind people, who share a vision of institutional excellence!

I joined Staff Senate in 2023.

I joined because I want to be an agent of positive change: helping to improve Mason operations and policies, advocating for the needs of the staff, and fighting to ensure staff members’ title and pay align with the work they are being asked to perform.

Tabatha Hargrove

Headshot of Tabatha Hargrove
Tabatha Hargrove. Photo by: Creative Services/George Mason University
Headshot of Tabatha Hargrove

Title: Student Support Coordinator

Department: Honors College

Phone: 703-993-6919

Groups: Awards and Engagement Committee, Fairfax Campus

Position Title: Student Support Coordinator

Current Department: Honors College

Joined Mason in September 2022.

I love Mason because the university is innovative and forward thinking.

I joined Staff Senate in 2023.

I joined to be able to advocate and serve the amazing staff here at Mason.

Profile of a Senator: Tabatha Hargrove (February 2024)

Diana St.Amand-Campos

Title: Business Developer Specialist

Department: Continuing and Professional Education

Phone: 703-993-2113

Groups: Awards and Engagement Committee, Mason Square

Position Title: Business Developer Specialist

Current Department: Continuing and Professional Education (CPE)

Joined Mason in October 2022

I love Mason because the growth and the move forward with changing times with advocacy for students.

I joined Staff Senate in 2023

I joined Staff Senate because of the opportunity to be a part of the goals and changes that are currently taking place at Mason and across universities in the U.S.

April Lopez

April Lopez, Staff Senator.

Title: Administrative Assistant to the Director

Department: Division of Special Education and disAbility Research

Phone: 703-993-4172

Groups: Fairfax Campus, Awards and Engagement Committee

Position: Administrative Assistant to the Director

Current Department: Division of Special Education and disAbility Research, College of Education and Human Development

Joined Mason in: 2019

I love working at Mason because of the diversity of voices all working in their own way towards a common goal of continually advancing the university. At Mason, the whole is definitely greater than the sum of the parts!

I joined the Staff Senate because I wanted to broaden my knowledge of the workings of the institution, to advocate for my colleagues throughout the university, and to collaborate with other senators and others across the campuses to work for the benefit of the whole of Mason.

Profile of a Senator: April Lopez (April 2023)