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Sean Gregory Whittmore

Sean Gregory Whittmore

Practice areas:

Criminal Defense

About Me

    Sean G. Whittmore graduated with a B.A. in History from Texas A&M University in 2005. Following his graduation from Texas A&M, he followed in his family footsteps as a fourth-generation graduate of Washburn University Schoold Of Law in Topeka, KS.

     While in law school, Sean began his career in criminal law clerking for the District Court Judges of the Eight Judicial District of Kansas.  He then began practicing criminal law as an intern with the Washburn Law Clinic, where he represented indigent clients in the courts of Shawnee County, KS.  Sean then interned with the Kansas Appellate Defender Office through the Washburn Law Clinic drafting appeals for indigent defendants.Following his early defense work, Sean began working as an intern prosecutor with the Shawnee County District Attorney's Office where he prosecuted misdemeanor offenses. 

     After passing the Texas bar, Sean worked as an Assistant District Attorney in the Montgomery County District Attorney's office for two and a half years.  There he prosecuted felony and misdemeanor cases and gained valuable insight into how prosecutors evalaute and prepare their cases for trial. 

     Following leaving the DA's office, Sean worked for Stephen Jackson at the Law Offices of Stephen D. Jackson & Associates before forming his own practice, the Whittmore Law Firm.


Languages Spoken: German, English

Practice Areas

Licensed since 2009

  1. Criminal Defense: 100%



Fixed (Always)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

3 total 

  • F. Brice Hersom

    I endorse this lawyer. Mr. Whittmore is a skilled attorney and advocate for his clients.


    F. Hersom Divorce & Separation Attorney
    Relationship: Fellow lawyer in community

  • Joshua Zientek

    I endorse this lawyer. Sean and I frequently work together on cases and discuss legal theory. When I need a second opinion on a matter, Sean is one of the lawyers to whom I go for assistance. Sean is respected by prosecutors and judges. Give him a call if you need legal assistance. Highly recommended.


    Joshua Zientek Criminal Defense Attorney
    Relationship: Friend

Contact Info

The Whittmore Law Firm, PLLC

300 West Davis St.
Suite. 450
Conroe, TX, 77301



TXEligible To Practice In Texas 200908/25/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
Top Paper - Advanced EvidenceCALI2009

Work Experience

TitleCompany NameDuration
Founding PartnerThe Whittmore Law Firm, PLLC2013 - Present
Contract AttorneyLaw Office of Stephen D. Jackson & Associates2012 - 2013
Assistant District AttorneyMontgomery County District Attorney's Office2010 - 2012
Intern ProsecutorShawnee County District Attorney's Office2008 - 2009
Legal InternWashburn University School Of Law - Law Clinic2008 - 2009


Association NamePosition NameDuration
Texas Criminal Defense Lawyers AssociationMember2013 - Present
Montgomery County Criminal Lawyers AssociationMember2013 - Present
Montgomery County Bar AssociationMember2010 - Present
Texas District and County Attorneys AssociationMember2010 - 2012
Phi Alpha DeltaMember2006 - Present

Legal Cases

Case NameOutcome
State of Texas v. H.P.Dismissed

See all Legal Cases 


School NameMajorDegreeGraduated
Washburn UniversityLawJD - Juris Doctor2009