Author: Mary Ann Clerkin

Sheryl joined Threshold in April 2025. She earned her Bachelor’s degree in Accounting from Central CT State University in 2001 and went on to build a career spanning more than 20 years in regulated private water utilities. While Threshold operates in a very different industry, Sheryl brings extensive financial expertise and a strong foundation in regulatory environments. In her role, she is responsible for all accounting functions at Threshold, including the preparation of monthly financial statements, corporate reporting, cost analysis and the development of annual budgets. She also oversees the finance department, ensuring accuracy, efficiency, and strategic financial management across the organization.

Sheryl enjoys spending quality time with her sons and her dog, Ozzy. She has a passion for cooking and baking, and loves attending country music concerts whenever she gets the chance. In her free time, she’s happiest outdoors – whether that’s hiking scenic trails or relaxing by a cozy fire.

Stacy Keefer is a results-driven operations and production professional with over 25 years of experience improving workflows, managing production schedules, and supporting business growth. She is known for streamlining processes, coordinating with vendors, and delivering projects efficiently and on spec. Stacy brings a practical, hands-on approach to solving operational challenges and driving performance across teams.

When not working, she can be found fishing, hiking, or enjoying a round of disc golf.

Aris DiGiulio joined Threshold as Senior Product Manager in 2024, bringing more than a decade of diverse experience in brand management, new product development, consulting and entrepreneurship. In this role, Aris leads the Product team in all innovation efforts while supervising management of the existing product portfolio. He also directs the support and development team for eVisitor, Threshold’s successful proprietary visitor management software used by organizations to streamline access management.

With prior experience at large global organizations including Diageo, Schick and Kobrand Corporation, Aris is focused on driving innovation while maintaining a high level of product quality and customer support that defines the Threshold organization. This has resulted in multiple new products and software enhancements that have delivered solutions and improved experiences for businesses, visitors, contractors and employees.

Aris earned his bachelor’s degree from Stony Brook University and an MBA from Fordham University’s Gabelli School of Business. He resides in Fairfield, Connecticut and enjoys spending time with his wife and two daughters.

Noel Turner is a seasoned veteran in the visitor management marketplace. She is currently the Director of Sales and Marketing for Threshold Visitor Systems, an Avery Products Company. Her employment there spans twenty years, the last eight in her current position.

Her degree in communications and her industry experience have served her well in leadership roles with the ASIS and ISDA (Identification Security Dealers Association), leading national trade organizations in the security marketplace. She’s an industry expert in bringing together businesses, which collectively and efficiently solve the end user’s visitor security issues and problems with the appropriate level of sophistication, technology and cost.

In her free time, Noel loves to go camping and spend time with her dog.

Suzanne Corcoran joined Threshold in 2001 after a career in network radio sales and promotion. Starting in Sales, she quickly became part of a new Product Development team, using her marketing and project management skills to help create and launch the original Visitor Badge product line.

Over the years, she has added various management responsibilities from Production to Finance, leading to her current role as General Manager. Suzanne and the Threshold leadership team are dedicated to growth via new product development, enhanced web and digital marketing, high quality propriety products and superior service to customers and partners alike, all while fostering a collaborative and rewarding workplace culture.