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Peter Constantine Sullivan

Peter Constantine Sullivan

Practice areas:

Business, Civil Litigation, Corporate & Incorporation, Securities & Investment Fraud, Mergers & Acquisitions

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Review Peter Sullivan

Practice Areas

Licensed since 2011

  1. Business: 40%
  2. Corporate & Incorporation: 20%
  3. Civil Litigation: 20%
  4. Mergers & Acquisitions: 10%
  5. Securities & Investment Fraud: 10%


Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

3 total 

  • Peter Andrew Roth

    Peter is an excellent attorney. His work with small business is amazing. He is smart, efficient, honest and trustworthy--everything a business owner should look for in a counselor. He will help you get your business started, take it to the next level, or even transition to a buyer or family member. His advice will protect you from unnecessary court costs and expenses. But if you need a litigator, his skills are superior in that area as well. I highly recommend you contact Peter with your business legal issues.


    Peter Roth Estate Planning Attorney
    Relationship: Fellow lawyer in community

  • Christopher James Finney

    I endorse this lawyer. Peter is a hard-working and dedicated attorney who consistently delivers his clients' the best advice.


    Christopher Finney Personal Injury Attorney
    Relationship: Worked together on matter

Contact Info

Sullivan Halenkamp LLP

7751 Carondelet Avenue
2nd Floor
Clayton, MO, 63105-3340


MOGood Standing, Active201101/08/2013

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Rising Star - Business LitigationSuper Lawyers2015
Rising Star - Business LitigationSuperLawyers2014
BAMSL YLD Merit AwardBar Association of Metropolitan St. Louis, Young Lawyers Division2012

Association NamePosition NameDuration
Bar Association of Metropolitan St. LouisSecretary2014 - 2015
Bar Association of Metropolitan St. LouisYLD - Member-at-Large2012 - 2014
American Bar AssociationMember2011 - Present
Missouri BarMember2011 - Present

Legal Cases
Case NameOutcome
Memoryten, Inc. v. Silicon Mountain Holdings, et al. (14-cv-635-KPF)Dismissed pursuant to FRCP 12(b)(6)

See all Legal Cases 

School NameMajorDegreeGraduated
State University of New York at BuffaloPsychologyBachelor of Arts (BA)N/A
Western Michigan University Cooley Law SchoolLawJuris DoctorateN/A