Nationwide FINRA Arbitration Attorney & Securities Litigation Lawyer

For nearly four decades, Jeffrey R. Sonn has represented investors harmed by stockbroker misconduct, unsuitable investment recommendations, securities fraud, Ponzi schemes, and other forms of financial wrongdoing. As the founder and CEO of Sonn Law Group, he has built a premier national practice focused on holding brokerage firms, financial professionals, and investment promoters accountable for investor losses.

Jeff founded Sonn Law Group in 1995 after developing a strong foundation in securities litigation and bankruptcy law. Since then, he has devoted his career to serving as a dedicated FINRA arbitration lawyer, helping individuals, retirees, business owners, and institutional investors navigate complex financial disputes. His practice encompasses FINRA arbitration, securities litigation, class actions, receivership and bankruptcy-related proceedings, and cases involving sophisticated investment products and large-scale financial fraud.

Jeff brings an uncommon combination of trial-tested litigation experience, deep financial-industry knowledge, and practical judgment to each matter. He understands how investment fraud threatens retirement plans, family security, and a lifetime of savings. His approach is direct, personal, and relentless: understand what happened, identify who is responsible, and develop a focused strategy for pursuing maximum financial recovery.

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Devoted to Investor Protection

Jeff began his legal career working in securities defense and bankruptcy law. That early experience gave him invaluable, behind-the-scenes insight into how financial institutions defend claims and how assets can be traced and recovered when fraud leads to insolvency, bankruptcy, or receivership.

After founding Sonn Law Group, Jeff put that experience to work exclusively on behalf of investors. Over his nearly 40-year career, he has handled more than 1,000 securities matters involving a wide range of investment disputes. His core practice areas include:

• FINRA Arbitration & Dispute Resolution
• Unsuitable investment recommendations
• Unauthorized trading and account churning
• Overconcentration and failure to diversify
• Broker selling away
• Broker and investment adviser negligence
• Breach of fiduciary duty and failure to supervise
• Material misrepresentations and omissions
• Private placements and alternative investments
• Real estate investment programs and REITs
• Structured and complex financial products
• Ponzi schemes and investment fraud
• Elder financial exploitation
• Investor class actions
• Receivership and bankruptcy-related recoveries

As an experienced FINRA arbitration attorney, Jeff represents clients in FINRA dispute resolution as well as state and federal court litigation. He frequently works alongside receivers, bankruptcy trustees, and court-appointed fiduciaries to maximize recoveries in matters involving failed investment programs.

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Significant Recoveries in FINRA Arbitration & Securities Litigation

Jeff has served as lead counsel, trial counsel, class counsel, steering committee counsel, and co-counsel in cases resulting in substantial awards, judgments, and settlements for defrauded investors.

Among his most notable matters, Jeff served as class counsel in Katz v. MRT Holdings, LLC, in which a federal court entered a $50 million final judgment for the investor class.

He also served as co-counsel in complex contract and securities litigation involving Hollywood Associates, First Union, and the Federal Deposit Insurance Corporation, which resulted in a $16 million verdict following proceedings before the United States Court of Appeals for the Eleventh Circuit.

Additional representative case results include:

• An approximately $11.1 million result in a matter involving Citigroup and Smith Barney
• A $4 million FINRA arbitration award against J.P. Morgan in a case involving alleged unauthorized and unsuitable trading
• An approximately $2.2 million arbitration award in Regas v. PaineWebber
• An approximately $1.7 million award in Tartell v. Krieger Financial
• Service on the plaintiffs’ steering committee in major litigation arising from the Medical Capital and Provident Shale Royalties investment programs, securing multi-million dollar settlements for affected investors.

Jeff has also held counsel and leadership roles in large investor recovery matters involving Woodbridge Group, EquiAlt, 1 Global Capital, Yieldstreet, MJ Capital, Medical Capital, Provident Shale Royalties, and MRT Holdings. (Note: Past results do not guarantee a similar outcome. Every case is evaluated on its unique facts.)

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Why You Need an Experienced FINRA Arbitration Attorney

Most disputes between investors and brokerage firms are required to be resolved through FINRA arbitration rather than a traditional courtroom. FINRA proceedings involve unique procedural rules, specific evidentiary considerations, and strategic challenges that require highly specialized legal knowledge.

Jeff has spent decades representing investors within this specialized forum. His extensive FINRA arbitration experience includes investigating account activity, analyzing complex financial records, working with industry and damages experts, cross-examining brokers and supervisors, and trying cases before FINRA arbitration panels.

When an investment scheme involves multiple companies, hidden assets, or overlapping regulatory actions, Jeff’s broader background in federal securities class actions, bankruptcy proceedings, and receiverships provides his clients with a distinct advantage.

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Leadership in the Investor Rights Community (PIABA)

Jeff has been an active, longtime leader within the Public Investors Advocate Bar Association (PIABA), an international legal organization dedicated to protecting investors and promoting fairness in securities arbitration.

He has held prominent leadership positions within PIABA, including serving as a member of its Board of Directors and as the organization’s Secretary. He has heavily participated in committees addressing securities arbitration, investor advocacy, and professional education.

Jeff routinely takes his investor advocacy to the regulatory arena. He regularly submits formal comments to the Securities and Exchange Commission (SEC) and FINRA to fight for rules and policies that protect the public, including:

• Improving FINRA arbitration procedures
• Opposing unfair motions to dismiss investor claims
• Expanding the availability of broker disciplinary history through FINRA BrokerCheck
• Ensuring the neutrality of public arbitrators
• Mandating insurance and coverage disclosures in arbitration proceedings

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Author, Lecturer, and National Securities Law Commentator

Jeff has written and lectured extensively on stockbroker fraud, Ponzi schemes, FINRA arbitration strategy, and elder financial exploitation. His publications and presentations include:

• Ponzi Schemes: Picking Up the Pieces from a Fallen House of Cards
• Group Arbitration Techniques
• How CPAs Can Detect Stockbroker Fraud
• The Broker Went Bankrupt: Now What?
• Vacating Arbitration Awards: Still a Tough Prospect
• Presentations concerning elder financial abuse, broker theft, and ethics in securities arbitration.

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Media Appearances & Legal Commentary

As a highly sought-after FINRA arbitration lawyer and securities fraud authority, Jeff is frequently called upon by national and international media to explain complex financial schemes to the public. His media appearances include:

• CNBC & CNBC's American Greed (Featured regarding the Scott Rothstein Ponzi scheme)
• CBS Sunday Morning
• ABC & MSNBC
• BBC Radio
• CNBC’s documentary Scam of the Century: Bernie Madoff and the $50 Billion Heist

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Professional Recognition & Legal Awards

Jeff’s peers consistently recognize his legal excellence in the fields of securities litigation, investor arbitration, and complex business disputes.

• Florida Super Lawyers: Selected in Securities Litigation for 10 consecutive years (2017–2026).
• AV Preeminent® Rated: The highest peer-review rating for professional excellence awarded by Martindale-Hubbell.

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Education and Bar Admissions

Jeff earned his Bachelor of Arts from the University of Florida in 1984 and his Juris Doctor from the University of Miami School of Law in 1988, where he served as an associate editor of the University of Miami Inter-American Law Review.

He was admitted to The Florida Bar in 1988 and is admitted to practice before:

• All federal courts in Florida
• The United States Court of Appeals for the Eleventh Circuit
• The United States Bankruptcy Courts for the Southern and Middle Districts of Florida

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Representing Investors Nationwide

While Sonn Law Group is headquartered in Florida, Jeff serves as a nationwide FINRA arbitration attorney, representing defrauded investors across the United States.

Jeff’s career is defined by a deep commitment to investor advocacy, meticulous preparation, and the willingness to take on powerful Wall Street institutions. Whether a case involves a single retiree’s drained account or a massive Ponzi scheme affecting thousands of victims, his objective remains the same: uncover the truth, identify the responsible parties, and pursue every viable path to financial recovery.

If you have suffered investment losses due to broker misconduct or financial fraud, contact FINRA arbitration lawyer Jeffrey R. Sonn today for a free, confidential case evaluation.