Gus MircosExecutive Director
Gus Mircos, a Longmont area native, brings over 15 years of nonprofit and business leadership experience to his role as Executive Director of the Longmont Humane Society. Previously, he served on the LHS Board of Directors, contributing to the Executive and Philanthropy committees. Gus spent a decade with the Boys & Girls Clubs of Weld County in various operations and development roles and served as Vice President of Operations at Art Cleaners in Boulder, Colorado for the past 7 years. Passionate about companion animals and community stewardship, he is honored to lead an organization with a vital mission and rich history in his hometown. In his free time, Gus enjoys the outdoors, and time at home with his wife, 6-year-old son, three dogs, barn cats, chickens, and whoever else decides to stroll in!
Carolyn Gross
Carolyn GrossDirector of Philanthropy
Carolyn was born and raised in the Midwest and moved to Colorado in 2023. Carolyn earned a BA in Journalism & Sociology from the University of Minnesota, and she has worked in fundraising for over 15 years. As a life-long animal lover, she is truly thrilled to hold her dream job as Director of Philanthropy at her local humane society. When Carolyn isn’t loving on all the big blockheads at LHS, she is spending time at home with her family or taking her pittie on adventures in the mountains.
Lynsey George
Lynsey GeorgeDirector of Operations
A native of Colorado, Lynsey grew-up with parents who never said no to taking in a stray or adding to the pack of dogs, cats, and small mammals that kept the house busy. After a career as a professional photographer, Lynsey worked in nonprofit development for over a decade. She is excited to work with the staff hands-on, fostering LHS as a great place to work and visit. Lynsey has a one-eyed dog and tries incredibly hard to not take home another dog every single day.
Crystal Reetz
Crystal ReetzDirector of Human Resources
Crystal has lived in Colorado for 30 years, having grown up in Tennessee and Kentucky. She got her bachelor’s degree in Organizational Leadership from the University of Louisville. Most of her HR experience has been in the automotive industry and she is thoroughly enjoying her time in animal welfare and making a difference in the lives of those who take care of our furry friends! Crystal has been with us since 2021.
Christina Tate
Christina TateLongmont Humane Veterinary Clinic Practice Manager
Christina resided in Chattanooga, Tennessee for over 39 years before moving to Colorado in 2023. She received her Veterinary Technician degree from Chattanooga State Community College in 2013 and has worked in animal health since. Prior to becoming the LHVC Practice Manager, she worked at a local animal shelter in Chattanooga for 7 years. She currently resides in Loveland with her fiancé and their two dogs, Rootbeer (pictured) and Georgie Pickles.
Kelly Renner
Kelly RennerAnimal Advocacy Manager
Kelly has been on the Animal Welfare team at LHS since October 2017. In May of 2019 she was promoted to Team Supervisor, and in 2023 advanced to the Shelter Manager role. Kelly received her Bachelor of Arts degree in Sociology from Colorado State University.
Sarah Miller
Sarah MillerTraining and Behavior Manager
Sarah’s journey with Longmont Humane Society began in July 2018, when she joined the organization as a member of the Animal Care team. Her dedication and compassion for animals quickly stood out, leading to her promotion to the Senior Animal Care team. In pursuit of a deeper understanding of veterinary medicine, Sarah stepped away for a year to explore that field. However, her time away only reaffirmed where her heart truly belonged — in the shelter, making a difference every day for animals in need. She returned to LHS in July 2023 as an Animal Care Team Supervisor and continued to grow both professionally and as a leader. As of 2025, Sarah now serves as the Shelter Operations Manager, where she oversees daily care operations and helps ensure both animals and the people who care for them receive the highest level of support and compassion. Sarah brings a unique blend of hands-on experience, leadership, and unwavering passion for animal welfare — qualities that make her an invaluable part of the LHS team.
Nicole Herzog
Nicole HerzogPublic Training Manager
After living in several states and two European countries, Nicole has returned to Colorado. She earned her bachelor’s degree from Colorado State University and her master’s degree from the University of Wisconsin–Madison. With a career rooted in education for both people and dogs, Nicole has dedicated her work to teaching art, canine manners, and ultimately specializing in canine behavior cases. Nicole serves the community by overseeing Public Training Department, including private and group classes, as the Public Training Manager. She also developed LHS’s comprehensive BRIDGE program that is used across the Training & Behavior Department and shelter-wide. 

Board of Directors

Jeff Sandri, Board Chair
Principle, CEO, JWS Advisory
Joined Board 2025, current term ends January 2027

Lisa Quillici, Treasurer
Senior Vice President, Concentric Energy Advisors, Inc.
Joined Board 2025, current term ends June 2027

Joe Przyuski, Secretary
Attorney
Joined Board 2026, current term ends January 2028

Suzan Fleck
Circle of Health Collaborative
Joined Board 2023, current term ends January 2027

Rachel Shannon
CEO, Dee-O-Gee Longmont
Joined Board 2025, current term ends January 2027

Denise Linn
Retired Military
Joined Board 2023, current term ends January 2027

Cari Schweitzer
Operations Director
Joined Board 2026, current term ends January 2028

Jon Gustafson
Veterinarian, Retired
Joined Board 2026, current term ends January 2028

Matt Alexander
Founder & Creative Director, Standard Practice
Joined Board 2026, current term ends January 2028

Sara Aerne
Community Enhancement and Compliance Manager, City of Longmont
Joined Board 2026, current term ends January 2028

Michaela Hayes
VP, Small Business Banking, KeyBank
Joined Board 2026, current term ends January 2028

Aamyie Chownyk
Branch Manager, KeyBank
Joined Board 2026, current term ends January 2028