Insider Trading Explained

A biopharmaceutical director tips off two family members and two friends before a merger announcement. The trades net just over $500,000. Within months, the SEC has charged all five. That case, from fiscal year 2025, was not an outlier: nearly a third of all SEC enforcement actions that year involved offering fraud or insider trading, up from about a quarter the year before. If your organization handles material nonpublic information, insider trading isn’t an abstract legal concept. It’s a live enforcement priority, and regulators are getting faster at catching it.

This guide breaks down what insider trading actually is, where the legal line sits, how investigators build these cases, and what your organization can do right now to stay on the right side of it.

What Is Insider Trading, Exactly?

Insider trading means buying or selling a security while in possession of material, nonpublic information (MNPI) about that security, in breach of a duty of trust or confidentiality. Two elements matter most:

  • Materiality — the information would likely influence a reasonable investor’s decision (an unannounced acquisition, an unreleased earnings miss, an FDA rejection).
  • Nonpublic status — the information hasn’t been disseminated to the market yet.

Not all insider trading is illegal. Corporate officers and directors trade their own company’s stock constantly, legally, as long as they disclose it and don’t trade on MNPI. The crime is trading (or tipping someone else to trade) on information the public doesn’t have.

Legal Trading vs. Illegal Insider Trading: Where the Line Is

This is the distinction that trips up even sophisticated executives and employees.

  • Legal: Trading based on public information, industry research, or a pre-established 10b5-1 trading plan set up before you had access to sensitive information.
  • Illegal: Trading (or tipping a friend, relative, or broker) based on confidential deal terms, unreleased financials, clinical trial results, or regulatory decisions.
  • Illegal, even indirectly: “Shadow trading,” a newer theory regulators have pursued, where an insider uses confidential information from their own company to trade shares of an economically linked competitor or partner instead.

Regulators have made clear that ignorance of the rule isn’t a defense, and neither is trading through a family member’s account or a friend’s brokerage. Tippee liability applies to anyone who receives a tip and trades on it, knowing or having reason to know the information was leaked improperly.

How Regulators Catch Insider Trading

Insider trading cases rarely start with a hunch. They start with data.

  • Trading pattern surveillance. FINRA and exchange-level systems flag unusual volume or timing spikes ahead of material announcements, then trace the accounts back to relationships with insiders.
  • Whistleblower tips. The SEC received roughly 27,000 whistleblower tips in fiscal 2025, and manipulation and disclosure-related allegations made up a large share of them.
  • Communications and metadata analysis. Texts, calls, and even burner-phone patterns between insiders and traders are increasingly reconstructed through forensic data analytics.
  • Cross-referencing relationships. Investigators map family ties, social connections, and shared addresses or devices between insiders and the people who profited.
  • Parallel criminal proceedings. A meaningful share of recent SEC insider trading actions run alongside DOJ criminal cases, particularly in the life sciences sector, meaning subjects can face both civil penalties and prison time from the same conduct.

The pattern is consistent with what we’ve seen in other white-collar cases: the fraud triangle of pressure, opportunity, and rationalization often explains why an otherwise trusted employee crosses the line in the first place (our earlier piece on the fraud triangle breaks this down in more detail).

Real Cases That Show How It Unravels

Recent enforcement actions illustrate how quickly these schemes fall apart once regulators start pulling threads:

  • A former head of equity trading at a Denver investment firm used confidential information to trade at least 10 public companies’ securities, generating roughly $217,000 in profits before being caught and charged.
  • Three brothers allegedly ran a $41 million insider trading scheme tied to manipulating two pharmaceutical stocks, working with three friends to spread the trades across multiple accounts.
  • An international insider trading ring involving a German and a Singaporean national generated more than $17.5 million in illegal profits before U.S. regulators unwound the network.

Every one of these cases started the same way ours do when a client calls us: a suspicious pattern, a tip, or an anomaly that looked small until someone dug into it. What happens in the hours and days after discovery often determines whether evidence holds up later. Our field guide to the first 48 hours after discovering fraud walks through exactly what to preserve and who to notify immediately.

The Cost of Getting It Wrong: Penalties and Consequences

Civil and criminal exposure both apply, often simultaneously:

  • Disgorgement of all ill-gotten gains, plus prejudgment interest.
  • Civil penalties of up to three times the profit gained or loss avoided.
  • Officer and director bars, ending careers even without a criminal conviction.
  • Criminal prosecution, including restitution and prison time, when the DOJ pursues willful, intentional violations.

Regulators have signaled that biotech and life sciences will remain a particular focus in the year ahead, given how dramatically clinical trial results and FDA decisions move share prices. Companies in that space should treat blackout periods and pre-clearance policies as non-negotiable.

Building an Insider Trading Compliance Program That Actually Works

Organizations don’t need to wait for a subpoena to get this right. A few practical steps:

  1. Formalize MNPI handling. Define what counts as material nonpublic information in writing, and restrict access on a need-to-know basis.
  2. Enforce blackout periods and pre-clearance. Especially around earnings, M&A activity, and regulatory milestones.
  3. Monitor trading activity. Even small companies can flag employee and related-party trades against known blackout windows.
  4. Train beyond the executive suite. Assistants, IT staff, and outside vendors often have incidental access to MNPI and are rarely trained on the rules.
  5. Document everything. If an investigation ever happens, the difference between admissible, defensible evidence and evidence that gets thrown out often comes down to how it was collected and preserved (we cover this in detail in our piece on evidence that holds up in court).

The Bottom Line

Insider trading enforcement isn’t slowing down, it’s getting more sophisticated, more data-driven, and more likely to end in parallel civil and criminal exposure. The organizations that stay out of headlines are the ones that build real MNPI controls before regulators come looking, not after. If your organization needs a confidential review of its trading controls, an internal investigation, or forensic support tracing a suspected leak, our team has spent decades on exactly this kind of work. Reach out to start a conversation.

Frequently Asked Questions

Is it illegal for company executives to trade their own stock?

No, executives can legally trade their own company’s stock, but only when they don’t possess material nonpublic information at the time and they follow disclosure and pre-clearance rules, often through a properly structured 10b5-1 plan.

What is “tipping,” and can I get in trouble for a tip I never acted on?

Tipping is passing along material nonpublic information to someone who then trades on it. The tipper can face liability even without trading personally, if they knew or should have known the information would be misused.

How long do insider trading investigations typically take?

It varies widely, from months to several years, depending on the complexity of the trading network, whether international parties are involved, and whether parallel criminal proceedings are running alongside the civil case.

Can a company be liable if an employee commits insider trading without the company’s knowledge?

Companies can face liability for failing to maintain adequate supervision and controls, even if leadership had no direct knowledge of the misconduct, which is why documented compliance programs matter.

What should we do if we suspect an employee is trading on inside information?

Preserve relevant records immediately, restrict further access to sensitive information, and consult counsel before confronting the employee directly, since early missteps can compromise evidence.

Does the SEC still rely on whistleblowers to catch insider trading?

Yes. The SEC received roughly 27,000 whistleblower tips in fiscal 2025 alone, and tips remain one of the most reliable ways these schemes come to light, alongside automated trading surveillance.

Reference

  1. U.S. Securities and Exchange Commission. (2026). SEC Announces Enforcement Results for Fiscal Year 2025. https://www.sec.gov/newsroom/press-releases/2026-34
  2. U.S. Securities and Exchange Commission. (2026). FY2025 Annual Report to Congress on the Dodd-Frank Whistleblower Program. https://www.sec.gov/files/fy25-annual-whistleblower-report.pdf
  3. White & Case LLP. (2026). SEC FY 2025 Review: A Transformative Year in SEC Enforcement. https://www.whitecase.com/insight-alert/sec-fy-2025-review-transformative-year-sec-enforcement
  4. King & Spalding. (2026). SEC Enforcement Under the Current Administration: Takeaways from FY 2025 and the First Six Months of FY 2026. https://www.kslaw.com/insights/articles/sec-enforcement-under-the-current-administration-takeaways-from-the-fy-2025-results-and-the-first-six-months-of-fy-2026
  5. Harvard Law School Forum on Corporate Governance / Paul, Weiss. (2026). SEC Enforcement: 2025 Year in Review. https://corpgov.law.harvard.edu/2026/01/21/sec-enforcement-2025-year-in-review/
  6. Outten & Golden LLP. (2026). The SEC’s Enforcement Agenda, Defined: Insider Trading. https://www.outtengolden.com/newsroom/the-secs-enforcement-agenda-defined-insider-trading
  7. Cooley LLP, Investigations and Enforcement Watch. (2025). SEC Public Companies Enforcement: FY 2025 Review and What to Expect in 2026. https://investigations.cooley.com/2025/12/23/sec-public-companies-enforcement-fy-2025-review-and-what-to-expect-in-2026/
  8. Phillips & Cohen LLP. (2026). SEC Office of the Whistleblower Awards Over $60 Million to Whistleblowers in FY25. https://www.phillipsandcohen.com/?p=76452
  9. Fridman Fels & Soto. (2025). SEC Insider Trading Enforcement in 2025. https://ffslawfirm.com/insights/sec-insider-trading-enforcement-2025
  10. U.S. Department of Justice, Federal Bureau of Investigation. White-Collar Crime. https://www.fbi.gov/investigate/white-collar-crime

Disclaimer: This article is provided for informational and educational purposes only. It does not constitute legal, financial, or professional advice, and reading it does not create a client relationship with Fraud & Order. Every situation is different; consult a qualified attorney or compliance professional before acting on anything discussed here. For questions about FraudOrder services, visit https://fraudorder.co/