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Hannah D. Sibiski

Hannah D. Sibiski

Senior Attorney

Hannah Sibiski represents businesses and individuals in their legal disputes in Texas state and federal courts. Her practice focuses on energy companies, manufacturing companies, pharmaceutical companies, healthcare providers, and financial services companies.

Ms. Sibiski also provides pro bono representation to Afghans seeking asylum in the United States and practices pro bono civil rights law.


  • Floating production, storage, and offloading (FPSO) manufacturer in trade secret litigation in Texas state court.
  • International project management, engineering, and construction company in high-profile trade-secret litigation brought by key competitor.
  • E&P company in case of first impression related to interpretation of the joint operating agreements and Arkansas state law in federal court in Houston; won an important legal question that resulted in a favorable settlement.
  • Pipeline company in a contamination case involving commercial property; developed an alternative strategy for closure that was approved by the Texas Railroad Commission that led to settlement.
  • Manufacturing company in a multimillion dollar breach of contract and breach of warranty lawsuit; led litigation to settlement, successfully managing significant risk from the extensive damages sought for the alleged defective welding of heavy-weight pressure vessels that were processing natural gas production from an offshore platform.


HBA Harris County Bench Bar Pro Bono Award
Awarded by the Houston Bar Association and the Harris County judiciary (2017)
Texas Super Lawyers
"Rising Star" (2009, 2011, 2013)



  • J.D., Harvard Law School, 2003
  • B.A., Rice University, 1994


  • Texas
  • U.S. Court of Appeals for the Fifth Circuit
  • U.S. District Court, Southern District of Texas