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John Thomas Sullivan
John Thomas Sullivan is a lawyer in Dallas, TX who works for King & Spalding. Licensed in Texas since 2015. Graduated from University of Pennsylvania in 2015.
Claim profileContact attorney
Law school
Bar admission
Office
Disciplinary
JS
John Thomas Sullivan
King & SpaldingDallas, TX·10 years licensed
Claim profileContact attorney
John Thomas Sullivan is a lawyer in Dallas, TX who works for King & Spalding. Licensed in Texas since 2015. Graduated from University of Pennsylvania in 2015.
Law school
University of Pennsylvania
Class of 2015
Bar admission
2015
State Bar of TX · No. 24098485
Office
2601 Olive St Ste 2300
Dallas, TX 75201
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Winston & StrawnAS OF MAY 2023Private Law Practice · Dallas, TX
- King & SpaldingAPR 2026 — PRESENTPrivate Law Practice · Dallas, TX
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Last refreshed Jun 2026