The legal community is mourning the loss of Joshua (Josh) DuClos, a highly respected partner at Sidley Austin LLP in Los Angeles, who passed away recently. His death has left a profound void in the firm and among colleagues, clients, students, and friends who admired his brilliance, professionalism, and compassion.
Josh was a partner in Sidley’s Mergers and Acquisitions and Private Equity practice group in the firm’s Century City office, where he built a reputation as one of the most skilled and dedicated lawyers in his field. Known for his sharp intellect and deep understanding of complex transactions, Josh was equally celebrated for his mentorship, generosity, and unwavering integrity — qualities that defined both his personal and professional life.
In a statement, Sidley Austin LLP expressed deep sorrow at his passing, writing:
“We are deeply saddened to inform you of the death of our partner, colleague, and good friend, Joshua (Josh) DuClos. Josh was an exceptional lawyer, a loyal colleague, and a true professional who was passionate about sharing his knowledge with others.”
Josh’s career achievements were remarkable and widely recognized. In 2020, he was named to the Daily Journal’s “Top 40 Under 40” list, honoring the most accomplished young attorneys across California. The previous year, The Deal featured him as one of the 21 most promising new M&A and Private Equity partners nationwide, recognizing his skill, dedication, and impact within the field.
Beyond his professional accomplishments, Josh was deeply committed to education and mentorship. He served as an Adjunct Professor at Pepperdine Caruso School of Law, where he taught Mergers and Acquisitions, sharing his expertise and inspiring the next generation of legal professionals. His students and colleagues remember him as a teacher who not only conveyed knowledge but also instilled confidence, curiosity, and ethical leadership.
Josh was also a Humanity in Action Senior Fellow since 2003, reflecting his lifelong commitment to justice, inclusion, and the responsible use of law in service of society. Those who knew him best describe him as a man of deep empathy and humility — someone who approached every challenge with thoughtfulness and care.
While details regarding the cause of his passing have not been made public, tributes continue to pour in from across the legal community. Friends and colleagues have shared stories highlighting his kindness, mentorship, and unshakable professionalism. Many have noted that Josh’s leadership and compassion extended beyond his office — he was the kind of person who made time for others, listened with empathy, and believed deeply in collaboration and excellence.
Sidley Austin’s message concluded with a heartfelt remembrance:
“Please join us in remembering Josh as a kind friend, a loyal advocate, and an insightful mentor. His presence enriched our firm, and his legacy will continue to inspire everyone who had the privilege of knowing and working with him.”
The passing of Joshua DuClos represents not only a personal loss to those who loved him but also a significant moment of reflection within the broader legal community. His career serves as a testament to the power of intellect paired with humanity — a reminder that the best lawyers are those who lead with both mind and heart.
Josh is survived by his family, friends, and countless colleagues who will carry forward his memory through the values he exemplified: integrity, excellence, mentorship, and compassion.
As Sidley Austin and the Los Angeles legal community come together to honor his legacy, Joshua (Josh) DuClos will be remembered as a lawyer of rare talent, a teacher of great influence, and a friend whose kindness will never be forgotten.