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William Pierce Sargeant IV

William Pierce Sargeant IV

also known as Pierce Sargeant IV

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About Me

After working with managing partner Dwane Cates for four years, I was named partner.   The firm consists of three attorneys with a practice focused on Criminal Defense and Civil Litigation.  Significant legal experience includes:

·         First chair in Arizona Court of Appeals case

·         Second chair in Arizona Supreme Court case

·         Litigation of felony and misdemeanor matters through trial

·         Litigation of civil business and contract matters through trial

·         Transactional business contract drafting and review

Member of the State Bar of Arizona and United States District Court, District of Arizona.


Practice Areas


  1. Litigation: 75%
  2. Contracts & Agreements: 15%
    5 years
  3. Business: 10%
    5 years

Attorney Endorsements

12 total 

  • Ryan McPhie

    Pierce Sargeant is a smart and dedicated attorney. He is the kind of attorney you want on your side if facing criminal charges.


    Ryan McPhie Criminal Defense Attorney
    Relationship: Fellow lawyer in community

  • Dwane M Cates

    Pierce Sargeant is a very good attorney. He worked at my office for five years and was recently made a partner at the firm. I trust this lawyer to handle any matter professionally. I highly recommend him.


    Dwane Cates Criminal Defense Attorney
    Relationship: Supervised lawyer

Contact Info

Arizona Attorney General's Office

1275 W. Washington St
Phoenix, AZ, 85007


AZActive 201002/23/2010

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Dean's ListLoyola Law School2008
Dean's ListLoyola Law School2007
Dean's ListArizona State University2006
Dean's ListArizona State University2005
Dean's ListArizona State University2004
University ScholarshipArizona State University2002
Work Experience
TitleCompany NameDuration
Assistant Attorney GeneralArizona Attorney General's Office2014 - Present
PartnerCates & Sargeant Law Group, PLLC2013 - 2014
AttorneyDwane Cates Law Group, P.L.L.C.2010 - 2013
AttorneyCates, Hanson, Sargeant & Schoenau PLC2010 - 2010
Association NamePosition NameDuration
National Association of Criminal Defense LawyersN/A2012 - 2014
Maricopa County Bar AssociationN/A2010 - Present
Business Law SocietyN/A2008 - 2009
Delta Sigma PhiN/A2002 - 2006
Legal Cases
Case NameOutcome
TheftDismissed with Prejudice
Probation ViolationReinstated on Probation, no jail
Urinating in PublicDismissed pursuant to Deferred Prosecution
See all Legal Cases 
School NameMajorDegreeGraduated
Loyola Law School, Loyola Marymount UniversityLawJD - Juris Doctor2009
Arizona State UniversityBusinessBS - Bachelor of Science2006