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Brian J. Bagley

also known as Brian J. Bagley, Brian J. Bagley, J.D., M.B.A.

About me

Brian J. Bagley, J.D., M.B.A. is the founder and chief counsel of The Bagley Law Firm. In addition to representing local businesses, families, and individuals, Brian has represented many high profile clients, including Fortune 500 companies, small businesses, entrepreneurs, investment bankers, physicians, politicians, actors, lawyers, filmmakers, and their families.


Along with his work in the private sector, Brian is a Senior Lecturer at the Leeds School of Business at the University of Colorado at Boulder, and a professor for the university's prestigious Presidents Leadership Class, teaching classes on Business and Management. Brian himself is a CU alumnus, having earned a Juris Doctor from CU's School of Law and a Master of Business Administration from the Leeds School of Business.


Brian began his career as a senior analyst and key member of the team that researched and wrote the New York Times Bestseller, Good to Great: Why Some Companies Make the Leap… and Others Don’t. The best-selling hardback business book of all time, Good to Great has sold well over 3 million copies and has grossed more than $100 million in book sales alone. As the only research analyst throughout the five-year project for its entirety, Brian performed the in-depth investigations, interviews, and analysis on market-leading companies to understand how they came to dominate their industries. The research has been featured in The Wall Street Journal, Fortune, Business Week, Harvard Business Review, and Fast Company.


Brian is a member of the Phi Alpha Delta Law Fraternity, and has been licensed to practice law in the state of Colorado since 1999. His personal accomplishments include earning the rank of Eagle Scout from the Boy Scouts of America, speaking and writing fluent Spanish, writing and directing a full-length feature film distributed by Universal Vivendi, and volunteering – along with his wife – as a foster-adopt parent for Boulder County's Department of Housing and Human Services. His foremost passion is his wife, Ivone, and their four young children: Danielle, Jordan, Augie, and Mikey.



Languages spoken: Spanish, English

Photos and videos

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Practice areas


  1. Divorce: 45%
    17 years
  2. Criminal Defense: 35%
    17 years
  3. Personal Injury: 10%
    17 years
  4. Car Accident: 10%
    17 years



Hourly ($50-250/hour), contingent (10-20%), Fixed (sometimes), Retainer (sometimes), Free consultation (60 minutes), Pro bono (10%)

Payment types:

Cash, Check, Credit card

Attorney endorsements

12 total 

Are you an attorney? Endorse this lawyer

  • Ellen M. Ross

    I endorse this lawyer. I have found Brian to be a reasonable attorney who represents his client zealously but does not prolong matters unnecessarily.


    Ellen Ross Divorce and separation Attorney
    Relationship: Opposing Counsel on matter

  • Andrew J. Price

    Brian is a skilled, knowledgeable, and dedicated attorney who consistently prioritizes the interests of his clients, while maintaining the utmost degree of professionalism and integrity. I endorse this lawyer.


    Andrew Price Family Attorney
    Relationship: Opposing Counsel on matter

Contact info

Bagley Law Firm, LLC

630 15th Ave.
Suite 300
Longmont, CO, 80501

Bagley Law Firm, LLC

215 S. Wadsworth Blvd.
Suite 410
Lakewood, CO, CO, 80226



We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Selected Top 1%The National Association of Distinguished Counsel2015
Nominated for Super LawyersSuper Lawyers2015
Elected Mayor Pro Temp of Longmont, COLongmont City Council2013
Appointment to Colorado Oil & Gas Task ForceGovernor John Hickenlooper2013
Elected to Longmont City CouncilCity of Longmont2011
Senior Lecturer for the President's Leadership InstituteUniversity of Colorado at Boulder2009
Senior Lecturer for the Leeds School of BusinessUniversity of Colorado at Boulder2009
New York Times Bestseller list for Jim Collins' "Good to Great"New York Times2001
Eagle ScoutBoy Scouts of America1989
Work experience
TitleCompany nameDuration
Senior LecturerUniversity of Colorado, Boulder2009 - Present
Chief Executive/Senior Legal CounselThe Bagley Law Firm1999 - Present
Senior Analyst & Fortune 500 ConsultantJim Collins1996 - 2006
Association namePosition nameDuration
Longmont Chamber of CommerceMember2009 - Present
Colorado Bar AssociationMember1999 - Present
Boulder County Bar AssociationMember1999 - Present
Longmont Area Economic CouncilBoard Member2011 - 2013
Longmont Museum Advisory BoardBoard Member2011 - 2013
Longmont Library BoardBoard Member2011 - 2013
Housing & Human Services Advisory BoardBoard Member2011 - 2013
Legal cases
Case nameOutcome
See all legal cases 
School nameMajorDegreeGraduated
University of Colorado School of LawLawJD - Juris Doctor1999
University of ColoradoMarketing, Finance, & AccountingMaster of Business Administration1999
Brigham Young UniversityEnglish/PhilosophyBA - Bachelor of Arts1995
Greeley West High SchoolGeneral EducationHigh School Diploma1990
Speaking engagements
Conference nameTitleDate
University of Colorado at BoulderBusiness and Law2011
National Association of Insurance and Financial AdvisorsEstate Planning2010
KPMG Client EventManagement and Leadership Development2010
State FarmExecutive Leadership Seminar/ Organizational Development2008
St. Jude Children's HospitalExecutive Leadership Seminar/ Organizational Development2008
Latina ChamberExecutive Leadership Seminar/ Organizational Development2008
Chalhoub GroupExecutive Leadership Seminar/ Organizational Development2008
KPMG, LLPExecutive Leadership Seminar/ Organizational Development2007
Carolina's HealthCare SystemExecutive Leadership Seminar/ Organizational Development2007
Independent Insurance Agents and Brokers of AmericaExecutive Leadership Seminar/ Organizational Development2006
Euronet WorldwideExecutive Leadership Seminar/ Organizational Development2006
U.S. Department of Energy's National Conference on EnergyBuilding Great Organizations2005
Reser's Fine Foods, Inc.Executive Leadership Seminar/ Organizational Development2005
Personal Lines InsuranceExecutive Leadership Seminar/ Organizational Development2005
ParsonsExecutive Leadership Seminar/ Organizational Development2005
KeyBanc Capital MarketsExecutive Leadership Seminar/ Organizational Development2005
YMCA (metro cities group)Executive Leadership Seminar/ Organizational Development2004
The Church of Jesus Christ of Latter-day SaintsExecutive Leadership Seminar/ Organizational Development2004
SpectraLinkExecutive Leadership Seminar/ Organizational Development2004
San Diego SHRMExecutive Leadership Seminar/ Organizational Development2004
Old Colony YMCAExecutive Leadership Seminar/ Organizational Development2004
First Data CorporationExecutive Leadership Seminar/ Organizational Development2004
Executive Learning PartnershipExecutive Leadership Seminar/ Organizational Development2004
Ernst & Young, LLPExecutive Leadership Seminar/ Organizational Development2004
Crown Castle International CorporationExecutive Leadership Seminar/ Organizational Development2004
City National BankExecutive Leadership Seminar/ Organizational Development2004
Biogen Idec, Inc.Executive Leadership Seminar/ Organizational Development2004
Astra ZenecaExecutive Leadership Seminar/ Organizational Development2004
Philips ElectronicsExecutive Leadership Seminar/ Organizational Development2003
Old Republic National Title Insurance CompanyExecutive Leadership Seminar/ Organizational Development2003
Northwestern Memorial HospitalExecutive Leadership Seminar/ Organizational Development2003
National Starch & ChemicalExecutive Leadership Seminar/ Organizational Development2003
General Reinsurance CorporationExecutive Leadership Seminar/ Organizational Development2003
Eli Lilly and CompanyExecutive Leadership Seminar/ Organizational Development2003
Community Foundation for Southwest WashingtonExecutive Leadership Seminar/ Organizational Development2003
Centro de Productividad de MonterreyExecutive Leadership Seminar/ Organizational Development2003
Centennial VenturesExecutive Leadership Seminar/ Organizational Development2003
Canadian Imperial Banking CorporationExecutive Leadership Seminar/ Organizational Development2003
Belmont UniversityExecutive Leadership Seminar/ Organizational Development2003
Adventist Health Care RetreatExtra Ordinary Service2003
NyproExecutive Leadership Seminar/ Organizational Development2002
Duke Energy North AmericaExecutive Leadership Seminar/ Organizational Development2002
Association of California School AdministrationExecutive Leadership Seminar/ Organizational Development2002
American Medical ResponseExecutive Leadership Seminar/ Organizational Development2002
America First Credit Union ManagementExecutive Leadership Seminar/ Organizational Development2002