SEAN V. GREEN
Founder
Born and raised in Calgary, Sean brings a unique blend of compassion, professionalism, and practical insight to his legal practice. His professional journey began in 2004 after earning a Bachelor of Nursing from the University of Calgary. As a registered nurse, Sean worked with Alberta Health Services’ Mobile Response Team (MRT), providing frontline crisis intervention and mental health support. In that role, he collaborated closely with the Calgary Police Service, hospital emergency departments, family physicians, and community organizations to ensure clients received timely and coordinated care. He also contributed to the development of CPS training programs for officers dealing with emotionally distressed individuals.
Driven by a desire to broaden his impact, Sean pursued a Juris Doctor at the University of Calgary and completed his articles at Bennett Jones LLP. There, he gained experience across a range of legal disciplines, with a focus on commercial real estate, wills and estates, employment, and tax law. Ultimately, Sean chose to shift away from big law. In 2015, he founded Summit Legal Group, a boutique firm built on the principles of integrity, service, and accessibility. Since then, the firm has grown significantly while staying true to its mission of delivering high-quality legal services with a client-first mindset.
Outside the office, Sean enjoys spending time in nature with his family, often exploring Canada’s trails, lakes, and mountains.
PRACTICE AREAS: REAL ESTATE | WILLS & ESTATE | BUSINESS LAW | DOMESTIC CONTRACTS | NOTARY
JONATHAN A. LANG
Having spent his early childhood in southern Alberta, Jonathan has been a long-time resident of Calgary and considers it his hometown. He takes pleasure in being part of a closely-knit community and carries forward this legacy by actively engaging in volunteering and community building activities.
Jonathan commenced his post-secondary education at the University of Calgary, where he played football with the University of Calgary Dinos. Concurrent to his sports and educational pursuits Jonathan worked as a project manager for a prominent Calgary developer overseeing the construction of more than 700 homes. Jonathan pursued further education in Hawaii, where he graduated Summa Cum Laude with honours, earning a Bachelor of Arts degree. Subsequently, Jonathan traveled to London and New York to complete his Juris Doctor. Upon his return to Calgary, he completed his articles at one of Canada’s most prestigious Alberta-grown firms, Bennett Jones LLP. Following his articles, Jonathan worked at several large national firms, where he gained valuable experience and expertise handling high-profile cases.
During his leisure time, Jonathan enjoys indulging in activities such as traveling, sports, exploring the outdoors, and spending quality time with his family.
PRACTICE AREAS: REAL ESTATE | WILLS & ESTATE | BUSINESS LAW | DOMESTIC CONTRACTS | NOTARY
NATASHA A. NICHOLLS
Natasha resided in Canmore, before moving to Calgary to pursue her education at the University of Calgary. Natasha obtained a Bachelor of Commerce from the Haskayne School of Business and went on to work in finance and accounting in downtown Calgary for several years, before realizing her passion for the legal field.
In 2015 Natasha returned to the University of Calgary to attend the Faculty of Law, obtaining her Juris Doctor in 2018. During her time in law school, Natasha dedicated her time to volunteering with organizations such as Pro Bono Students Canada and Student Legal Assistance. She also served as Treasurer of the Calgary Women Studying Law Association.
After completing her articles with a boutique law firm in downtown Calgary, Natasha was admitted to the Alberta bar in 2019. Following articles, Natasha worked as an Associate Lawyer, where she focused her practice on corporate matters, wills and estates, and estate administration.
In her free time, Natasha loves spending quality time with her husband and daughter, delving into a good book, and venturing into the great outdoors.
PRACTICE AREAS: REAL ESTATE | WILLS & ESTATE | BUSINESS LAW | DOMESTIC CONTRACTS | NOTARY
WARREN W. C. WOO
Warren, a native of Vancouver, received his Bachelor of Arts degree in political science from the University of British Columbia. After completing his undergraduate studies, he obtained a law degree from the University of Alberta, where he was involved as an executive council member of Access Justice Canada, and as a volunteer with Student Legal Services of Edmonton and the Law Students Legal Advice Program of UBC. Warren then went on to article at a law firm in downtown Calgary and was admitted to the Alberta bar in 2008.
Early in his career, Warren practiced in a variety of areas including commercial litigation, construction, family law, personal injury, energy, employment, and real estate litigation. During his time with Summit Legal Group, Warren has specialized in Wills, Estate Planning, and Estate Administration matters. He has also gained extensive experience in real estate, uncontested family law, small business matters, and corporate and commercial law.
When not providing clients with exceptional legal services, Warren enjoys spending time with his wife and young son.
PRACTICE AREAS: WILLS & ESTATE | BUSINESS LAW | DOMESTIC CONTRACTS | NOTARY
MARK K. KIGGUNDU
Mark obtained his law degree from the University of Southampton in England where he was involved as a Student Ambassador for the Student Union and a member of various councils and groups such as Lawyers Without Borders. He subsequently received his Master of Laws (LL.M) in International Business Law from Osgoode Hall Law School where he had his thesis on the Microfinance industry published by Thomson Reuters and worked at various courts in Toronto as a volunteer with Pro Bono Students Canada. After completing his LL.M Mark moved to Edmonton and articled at a full-service law firm in downtown Edmonton and was admitted to the Alberta Bar in 2022.
After being admitted to the Bar, Mark moved to Calgary and worked as an Associate Lawyer in the International Tax and Transaction Services group at one of the Big Four accounting firms. Today, Mark’s practice focuses on real estate, corporate and commercial matters.
During his free time, Mark enjoys playing numerous sports, experiencing life to its fullest, and spending time with his family.
PRACTICE AREAS: BUSINESS LAW | REAL ESTATE LAW | NOTARY
MANKIRAN K. DULKU
Mankiran was born and raised in Montreal before moving to Mississauga, Ontario, where she spent most of her life. Fluent in English, French, and Punjabi (because why limit yourself to one language when you can argue in three?), she completed her undergraduate studies at the University of Ottawa with a major in Political Science and a minor in Sociology. Mankirian later pursued her legal education abroad, earning a Juris Doctor from Bond University in Australia—where she mastered both the law and the art of surviving spider encounters.
She brings a diverse professional background, having worked for both the federal and provincial governments in Ontario, as well as at law firms specializing in Corporate Commercial, Real Estate, Wills and Estates, and Immigration Law. Passionate about community involvement, Mankiran has also volunteered with various charitable organizations, including a women’s shelter in Brampton, Ontario, where she delivered weekly care packages to women and children in need.
In April 2025, Mankiran relocated to Alberta to further her legal career. She is currently completing her articles with Summit Legal Group, where she continues to develop her legal skills—with a sharp mind and a sense of humour to match.
Outside of work, Mankiran enjoys cooking, designing clothes, and spending time with her family, friends, and ever-reliable laughter.
PRACTICE AREAS: WILLS & ESTATE | REAL ESTATE | NOTARY
CRAIG A. GORHAM
Craig graduated from the Haskayne School of Business at the University of Calgary with a Bachelor of Commerce (Finance) degree. Commencing his career as an Investment Banker after finishing his studies, he specialized in raising capital for Junior E&P companies, before joining a Mergers and Acquisitions team where he was responsible for calculating the Net Present Values (NPV) and internal rates of return (IRR) for more than a billion dollars of acquisitions. Craig’s commitment to continuous learning prompted him to obtain several certifications, including Financial Modeling & Valuation Analyst (FMVA), Advanced Financial Modeler (AFM), and Chartered Financial Analyst (CFA) designations.
After a successful career in finance, Craig had the opportunity to switch to a more customer-centric profession that would still allow him to leverage his expertise and experience. He joined SUMMIT LEGAL GROUP’s Corporate Commercial and Estate team, where he offers corporate structure, financial modeling and forecasting solutions to our small business clients and leads our estate team adeptly assisting executors through the probate and estate administration process. Recently, Craig obtained his designation as a Certified Executor Advisor (CEA) one of the few in the City of Calgary who have independently demonstrated their knowledge in this area.
In his leisure time, Craig relishes spending time with his family and pursuing diverse hobbies, such as gardening, studying history, hiking, thrifting (you might want to inquire about his shoe collection), and tending to his small hobby farm west of the city.
PRACTICE AREAS: ESTATE PLANNING | SMALL BUSINESS | CERTIFIED EXECUTOR ADVISOR
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TALIA
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