LAWYER PROFILE
Aidan O'Connor

Aidan O'Connor

USA 2026

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Ranked in 1 practice area

About

Provided by Pashman Stein Walder Hayden P.C.

Practice Areas

Appellate Advocacy

Criminal Defense

Investigations - Governmental & Internal

Health Care

Litigation including Commercial Litigation

Privacy and Information Governance

Attorney Ethics & Professional Misconduct

Crisis Management

Securities Regulatory Enforcement & Litigation

Career

Aidan P. O’Connor is the co-chair of the firm’s Criminal Defense and Investigations practice groups and a member of its Litigation Department. Ranked by Chambers and Partners, he concentrates his practice on criminal defense, internal investigations, and both commercial and complex civil litigation, including securities fraud matters.

Prior to entering private practice, Aidan was an Assistant United States Attorney in the District of New Jersey for 18 years, serving in the Criminal Division, the Organized Crime Strike Force, and as the chief of the Violent Crimes Unit, conducting and leading RICO, fraud and other investigations and prosecutions.

A seasoned trial lawyer, Aidan has extensive courtroom experience as well as negotiation skills that bring resolutions to difficult cases in both civil and criminal contexts. His clients appreciate his creative problem solving, direct approach, and history of many successful settlements and decisions. He appears frequently in federal and state courts in New Jersey and New York.

Aidan has conducted internal investigations for corporate and public entities involving fraud, misuse of private and public assets, embezzlement, and compliance issues, and has represented corporations, public entities, nonprofit businesses and individuals in federal and state governmental investigations. He has also managed subpoena compliance issues for numerous entities. In addition, he has represented clients on matters involving civil RICO, the False Claims Act, securities fraud, regulatory issues, real estate, contract disputes, civil forfeiture and insurance issues.

Aidan’s experience with criminal matters includes defending individuals against allegations of securities fraud, insurance fraud, health care fraud, tax evasion, financial institution and wire fraud, money laundering, public and union corruption, kickback and commercial bribery schemes, computer intrusions, hacking and other cybercrimes, embezzlement, trade secrets, antitrust matters, and federal grand jury investigations. He has also represented clients accused of assault, kidnapping, Ponzi schemes, extortion, murder, theft, sexual offenses, drug and controlled dangerous substance offenses, and state parole violations in both state and federal courts, as well as municipal court matters. He has also argued cases before the Second and Third Circuit Courts of Appeals, as well as the Supreme Court of New Jersey.

During his tenure with the U.S. Attorney’s Office, Aidan conducted hundreds of federal prosecutions involving long and short-term investigations, grand jury presentations, witness interviews, wiretapping, and search warrants for offenses including organized crime, RICO, tax fraud and evasion, money laundering, theft of trade secrets, union corruption, embezzlement, commercial and insurance fraud, large stolen property rings, health care fraud, computer crimes, extortion, murder, robbery, and kidnapping.

Aidan has tried more than 20 federal jury trials, argued hundreds of motions and conducted scores of hearings involving organized crime, tax fraud, money laundering, government program fraud, racketeering, kidnapping, alien smuggling, homicide, bank robbery, narcotics trafficking, civil rights violations and other offenses.

He was a recipient of the Director’s Award for Superior Performance as an Assistant U.S. Attorney for his successful prosecution of a RICO case involving hundreds of millions of dollars in excise tax fraud and organized crime through the use of numerous shell corporations and related entities and the fraudulent transfer of money and assets. Previously, he was a litigation associate with Thacher Proffitt & Wood in New York City, where he conducted or assisted in civil trials involving banking and international maritime insurance in state and federal courts.

Professional Memberships

Former President- Association of Criminal Defense Lawyers of New Jersey (ACDL-NJ);

Member, New Jersey State Legislature’s Criminal Sentencing and Disposition Commission;

Officer and Member of the Executive Committee of Rutgers Law School ‘s Inn of Court (the Willard Heckel Inn); member, Association of the Federal Bar of New Jersey

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Litigation: White-Collar Crime & Government Investigations - New Jersey

Band 2
Band 2

Individual Editorial
Aidan O'Connor frequently defends individuals accused of fraud and corruption. He handles trials and government investigations as well as conducting internal investigations.

Strengths

Provided by Chambers

  • Aidan is a great lawyer, problem-solver and a pleasure to work with.

    Litigation: White-Collar Crime & Government InvestigationsChambers Guide to the USA
  • Aidan is a very thorough, very experienced and knowledgeable lawyer. He is sharp, analytical and leaves no stone unturned.

    Litigation: White-Collar Crime & Government InvestigationsChambers Guide to the USA
  • Aidan is an outstanding and capable lawyer.

    Litigation: White-Collar Crime & Government InvestigationsChambers Guide to the USA

Ranked Individuals at Pashman Stein Walder Hayden P.C. (15)

Delaware

New Jersey

  • Profile image of Justin Walder
    Justin Walder

    Litigation: White-Collar Crime & Government Investigations

    View profile
  • Profile image of Joseph Hayden
    Joseph Hayden

    Head of Litigation: White-Collar Crime & Government Investigations

    View profile
  • Profile image of Aidan O'Connor
    Aidan O'Connor

    Head of Litigation: White-Collar Crime & Government Investigations

    View profile
  • Profile image of Remi L. Spencer
    Remi L. Spencer

    Litigation: White-Collar Crime & Government Investigations

    View profile

Pennsylvania: Philadelphia & Surrounds

Unknown

USA - Nationwide

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