About Walt Cubberly

Walt Cubberly is a partner at Williams Hart & Boundas who focuses on representing individuals and families harmed by large corporations, with a particular emphasis on mass tort litigation involving Monsanto Roundup, and rideshare sexual assault cases. California courts appointed him as co-lead in both the Uber and Lyft sexual assault MDL proceedings. He graduated from the University of Texas at Austin in 2004 and from the University of Houston Law Center magna cum laude in 2009, finishing tenth in his class, admitted to the Order of the Coif and the Order of the Barons, and receiving the Lex Award for Constitutional Law. After law school he clerked for a federal judge before joining the firm.

Proven verdicts and settlements

$3.5 millionVerdict

A Philadelphia jury returned a $3.5 million verdict for Kelly Martel in December 2023, finding Monsanto's Roundup weed killer caused her non-Hodgkin lymphoma after more than fifteen years of exposure. The Pennsylvania Superior Court affirmed the judgment in full in 2025.

Philadelphia Court of Common Pleas (Mass Tort Program) · 2023Product LiabilityRead the full story →

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.

Practice areas

Education

University of Houston Law Center
J.D., 2009
University of Texas at Austin
Undergraduate, 2004

Bar admissions & credentials

State Bar of Texas

Other attorneys at Williams Hart & Boundas

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Proven verdicts and settlements from other Houston firms

The Lanier Law Firm
The Lanier Law Firm
$4.85 Billion Vioxx MDL Settlement for Heart-Attack and Stroke Victims
The Buzbee Law Firm
The Buzbee Law Firm
$1.1 Billion Verdict for Child Left Brain-Damaged by Oil-Fortune Heir
Arnold & Itkin
Arnold & Itkin
$2.07 billion · Cobb County Jury Awards John Barnes $2.065 Billion in Roundup Cancer Trial
The Ammons Law Firm LLP
The Ammons Law Firm LLP
$812 Million Verdict for Family of Worker Killed in Pecos Chemical Plant Explosion, Part of $1.6 Billion
Abraham Watkins
Abraham Watkins
$28.59 million · Jury Finds ExxonMobil 100% Liable for Baytown Plant Explosion, Awards Five Workers $28.59 Million

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.