Get To Know Us

John O’Keefe, CPA, CA
Partner at O'Keefe Accounting Group CPA PC.
John is a dedicated CPA based in Cobourg, driven by a passion for helping clients achieve success through innovative solutions. With an Honour’s Degree in Business and Computer Studies, he seamlessly blends business acumen with technology to modernize traditional accounting methods.
John has completed the CPA In-Depth Tax and HST courses, equipping him to navigate complex tax requirements for businesses and individuals. Under his leadership, O’Keefe Accounting Group has transitioned to a fully digital environment, offering clients efficient, paperless solutions.
John’s professional excellence is reflected in numerous accolades, including:
- Sage 50’s Accounting Partner of the Year (2020)
- Young Professional Award by the Port Hope & District Chamber of Commerce (2019)
- Emerging Leader by Wolters Kluwer CCH (2019)
Outside of work, John’s greatest achievement is his role as a father to three children, balancing family and professional life with care and dedication.
Phone: (905) 800-0909

Laurie Pelton, CPA, CA
Partner at O'Keefe Accounting Group CPA PC.
With over four decades of accounting experience, Laurie has developed deep expertise across a wide range of business scenarios. His strategic mindset helps clients recognize that business success depends on refining processes and empowering teams, beyond simply mastering their craft.
Laurie plays a vital role in mentoring the next generation of accountants at the firm, instilling in them the principles of exceptional service and stakeholder respect. His leadership has fostered a collaborative culture that consistently delivers high-quality results for clients, staff, and suppliers alike.
Phone: (905) 800-0909

Natasha Brittain, CPA
Staff Accountant
Natasha is a skilled CPA specializing in audits, reviews, and tax compliance. With over six years of experience, she combines technical expertise with a client-focused approach to help businesses achieve their goals.
A CPA since 2022, Natasha’s ability to identify and solve problems makes her an essential part of the firm’s success. When not working, she enjoys spending time with her family, bringing balance and care to every aspect of her life.
Phone: (905) 800-0909
Email: nbrittain@okeefecpa.ca

Luc Aubin, CPA
Accountant
Luc graduated from Ontario Tech University in 2020 with a Bachelor of Commerce degree in Accounting and Finance. As a dedicated CPA, he’s currently pursuing advanced tax education to further expand his ability to support clients in all areas of accounting.
Luc brings a positive attitude and strong work ethic to the team. Outside of the office, he enjoys time with his family, playing guitar, and exploring new interests like books and TV shows.
Phone: (905) 800-0909
Email: laubin@okeefecpa.ca

Anna Mirsch, CPA
Staff Accountant
Anna brings a diverse educational background to her role, holding a master’s degree in Business Administration from Gothenburg University and an Accounting Diploma from McMaster University. Her experience in small business environments gives her a unique perspective on client needs.
Anna is known for her energetic and optimistic approach, whether she’s tackling financial challenges or enjoying outdoor adventures with her family. Her dedication to lifelong learning is an inspiration to the team and clients alike.
Phone: (905) 800-0909
Email: amirsch@okeefecpa.ca

Jessica Foster
Accounting Administrator
Jessica has over a decade of administrative experience and holds a Bachelor of Arts in Psychology from Lakehead University. Joining the firm in 2019, she manages daily operations while supporting the accounting team.
Originally from Thunder Bay, Jessica values the work-life balance at O’Keefe Accounting Group, which allows her to spend time with her family and enjoy local community events.
Phone: (905) 800-0909
Email: jfoster@okeefecpa.ca

Sarah Johnston
Accounting Administration
With a background in Forensic Psychology, Sarah brings a unique analytical approach to her work at O’Keefe Accounting Group. Since joining in 2021, she has become a valued member of the administrative team, known for her problem-solving skills and attention to detail.
Sarah enjoys reading, fitness classes, and spending time with her pets. She is proud to be part of the Port Hope community, where she and her fiancé have made their home.
Email: sjohnston@okeefecpa.ca

Kim Freemantle
Accounting Administration
Originally from Northern Ireland, Kim has over 18 years of administrative experience and holds a BA in Psychology from the University of Waterloo. She joined the firm in 2022 and plays a key role in facilitating tax filings for both corporate and personal clients.
Kim appreciates the supportive and collaborative environment at O’Keefe Accounting Group. In her free time, she enjoys cooking for her family and exploring new travel destinations.
Email: kfreemantle@okeefecpa.ca

Olivia Caughey
Administrative Coordinator
As the first point of contact at O’Keefe Accounting Group, Olivia ensures every client interaction is welcoming and professional. With a Bachelor of Arts in Law and Legal Studies from Carleton University and a diploma in Corporate Governance, she is committed to exceptional service.
Outside of work, Olivia enjoys literature, writing, and spending time with her daughter. She is passionate about contributing to her local community and strives to make a positive impact through her role.
Phone: (905) 800-0909
Email: ocaughey@okeefecpa.ca

Hayden Howe
Junior Staff Accountant
Hayden is a University of Guelph student pursuing a Bachelor of Commerce in Accounting. He joined O’Keefe Accounting Group as a summer student in 2023 and continues to contribute as an intern.
Passionate about learning, Hayden brings enthusiasm and a fresh perspective to the firm. In his spare time, he enjoys sports, movies, and quality time with family and friends.
Address
O'Keefe Accounting Group
25 King Street East
Cobourg, Ontario
K9A 1K6
Phone: (905) 800-0909
Email: info@okeefecpa.ca