Cathy Guirguis serves as the chief executive officer and a partner at OKT. Her practice is focused on litigation representing Indigenous groups. Guirguis has appeared in different levels of court in Ontario and Manitoba, as well as in federal court and at the Supreme Court of Canada, with respect to various matters related to the protection and assertion of Aboriginal and treaty rights and land claims. She has also represented Indigenous clients in proceedings and tribunals regarding election, labour and employment, and environmental assessment. Guirguis provides negotiation advice regarding Aboriginal and treaty rights, lands claims, and consultation, and she also advises clients on day-to-day employment matters and governance administration. She received her LLB from Osgoode Hall Law School, and she also has a masters in Environmental Studies.