Daniel Mirarchi is the Managing Partner of Lydecker’s Doylestown Pennsylvania office. Mr. Mirarchi represents businesses, insurance carriers, and professionals in sophisticated civil litigation, including transportation, premises liability, employment, commercial disputes, and data privacy matters. With more than twenty-five years of experience in handling complex disputes on both sides of the courtroom, he brings a distinct perspective to his defense practice.

Prior to joining Lydecker, Mr. Mirarchi represented companies across industries in putative class actions arising from data privacy and cybersecurity incidents. He worked alongside business partners, incident response counsel, cyber insurance claim professionals, forensic investigators, and law enforcement to address pending litigation and state and federal regulatory inquiries. His defense practice also encompasses transportation and premises liability matters for a Fortune 50 company, employment disputes, and claims involving the misappropriation of trade secrets. Mr. Mirarchi has significant experience in handling vicarious liability claims and contractual and common law indemnity issues in auto and premises cases in Pennsylvania courts.

Earlier in his career, Mr. Mirarchi represented domestic and foreign shareholders in several securities fraud class actions and derivative lawsuits. Among them, he managed opt out claims arising from the Deepwater Horizon explosion on behalf of several institutional investors who purchased BP plc securities on non-U.S. exchanges. Mr. Mirarchi also served as one of the lead counsel in In re Parmalat Securities Litigation (SDNY), often referred to as the “Enron of Europe” due to the scale of the fraud, resulting in a substantial recovery for shareholders. He led a shareholder derivative action alleging the illegal off-label marketing of a blockbuster drug, leading to a settlement with first-of-its-kind corporate governance reforms.

Mr. Mirarchi focuses on identifying issues that drive a case, assessing potential exposure early, developing tailored fact and expert discovery, and pursuing a strategy that meets his client’s needs. He works closely with claim professionals, in-house counsel, risk managers, and business leaders before a case is filed and through every phase of a lawsuit, providing guidance and clear communication so his clients can make informed decisions about litigation strategy, potential resolution, and, when necessary, trial.

Mr. Mirarchi earned his Juris Doctor from the St. John’s University School of law and his undergraduate degree from Temple University. He is admitted to practice in the Commonwealth of Pennsylvania as well as the United States District Courts for the Eastern District and Middle District of Pennsylvania.