Insider Trading — Federal Securities Fraud Law

Insider trading — buying or selling securities while in possession of material, nonpublic information (MNPI) in violation of a duty of trust or confidence — is one of the most aggressively prosecuted forms of securities fraud under federal securities regulation. Though there is no single federal statute that specifically defines and prohibits "insider trading" by name, the prohibition is enforced through Section 10(b) of the Securities Exchange Act (15 U.S.C. § 78j) and SEC Rule 10b-5, which prohibit fraud and deception in connection with the purchase or sale of securities. The SEC, DOJ, and federal courts have built the insider trading prohibition through decades of case law — from the "classical theory" (corporate insiders trading on their company's secrets) to the "misappropriation theory" (outsiders who steal or misuse confidential information) to the "tipper-tippee" doctrine (insiders who pass tips to others who trade). Penalties are severe: civil disgorgement of profits plus penalties up to three times the profit gained (or loss avoided), and criminal penalties of up to $5 million and 20 years imprisonment for individuals.

Current Law (2026)

Legal Authority

• 15 U.S.C. § 78j(b) — Manipulative and deceptive devices (unlawful to use any manipulative or deceptive device in connection with the purchase or sale of any security; basis for SEC Rule 10b-5)
• SEC Rule 10b-5 (17 CFR 240.10b-5) — prohibits fraud, material misstatements, and deceptive acts in connection with securities transactions; the primary vehicle for insider trading enforcement
• 15 U.S.C. § 78u-1 — Civil penalties for insider trading (SEC may seek a civil penalty up to 3× the profit gained or loss avoided; liability extends to controlling persons who failed to prevent insider trading)
• 15 U.S.C. § 78ff — Criminal penalties (willful violation: individuals up to $5M fine and 20 years; non-natural persons up to $25M)

How It Works

Insider trading is prohibited under Section 10(b) of the Exchange Act and SEC Rule 10b-5 when someone buys or sells securities while possessing material, nonpublic information (MNPI) obtained through a relationship of trust or confidence, where trading constitutes a breach of that duty. "Material" means a reasonable investor would consider the information important — earnings surprises, merger plans, FDA drug approvals, major contract wins or losses. "Nonpublic" means it hasn't been disclosed through SEC filings, press releases, or other public channels. Under the classical theory, corporate insiders (officers, directors, employees) who trade their own company's securities based on confidential information breach their fiduciary duty to shareholders — a CEO buying shares before announcing better-than-expected earnings is the textbook example. Under the misappropriation theory, even non-insiders violate the law if they misappropriate confidential information from someone who trusted them and trade on it — as in United States v. O'Hagan (1997), where a law firm partner traded in a client's merger target; the duty breached is to the source of the information, not the company whose stock is traded.

The tipper-tippee doctrine established in Dirks v. SEC (1983) and refined in Salman v. United States (2016) extends liability to insiders who pass MNPI to others who trade — the tipper is liable if they received a personal benefit (money, friendship, reputational gain) from the tip, and the tippee is liable if they knew or should have known the tipper breached a duty. To allow legitimate insider trading, the SEC permits Rule 10b5-1 pre-arranged trading plans — written plans adopted when the insider does not possess MNPI, specifying in advance the amount, price, and timing of trades, providing an affirmative defense; the SEC significantly tightened these requirements in 2023, adding a mandatory 90–120 day cooling-off period before the first trade, prohibiting overlapping plans, and requiring good-faith certification. Separately, Section 16(b) of the Exchange Act imposes a strict-liability short-swing profit rule on officers, directors, and 10%+ shareholders: any profit from purchases and sales (or sales and purchases) of the company's stock within any 6-month period must be disgorged to the company — intent is irrelevant, and the company or a shareholder suing derivatively can recover it.

How It Affects You

If you're a corporate officer, director, or employee with access to material nonpublic information: Trading your company's stock while in possession of MNPI is illegal under SEC Rule 10b-5 — period, regardless of whether you think the information is "really" material or whether you intended to harm anyone. The classic prohibited scenario: selling shares before a quarterly earnings miss that you know about but the market doesn't. Penalties are severe: criminal fines up to $5 million and 20 years imprisonment per violation; civil disgorgement of profits plus treble penalties. Your primary protection: establish a Rule 10b5-1 trading plan during a window when you are not in possession of MNPI, specifying in advance the amount, timing, and price of future trades. The plan executes automatically even if you later come into possession of MNPI — but the 2023 SEC amendments to 10b5-1 added a mandatory cooling-off period (120 days for officers/directors, 30 days for other insiders) between adoption and first trade to prevent abuse. Follow your company's trading window policies even for trades under a plan — the trading window typically opens after earnings are released and closes well before the next quiet period begins.

If you're a Wall Street professional, lawyer, investment banker, or consultant with access to client MNPI: You face insider trading liability under the misappropriation theory — trading on information you obtained through a professional relationship in breach of a duty of confidentiality. The landmark case: United States v. O'Hagan (1997), where an attorney traded options in a target company while representing the acquirer in a merger. The confidentiality obligation you have to your clients — attorney-client, banker-client, advisor-client — extends to a prohibition on trading securities of companies about which you have confidential information. Tipping liability is equally serious: if you share MNPI with a friend or family member who then trades, you're the "tipper" and they're the "tippee" — both face liability under Dirks v. SEC (1983) if the tippee knew the information was improperly disclosed. Compliance imperative: maintain your firm's restricted list (securities you cannot trade in), document your basis for any trades in companies near client engagements, and never discuss client matters in contexts where others might overhear and trade.

If you're a retail investor monitoring potential insider trading: SEC Rule 10b-5 enforcement actually protects your interests as a market participant — but you're not a direct enforcement mechanism. Unusual trading patterns before corporate announcements (options activity, stock purchases by insiders before a favorable announcement) can be reported to the SEC's online tips portal (sec.gov/whistleblower) under the SEC Whistleblower Program, which pays 10–30% of sanctions over $1 million to whistleblowers who provide original information leading to successful enforcement. For your own trading: you're not subject to insider trading law simply because you trade ahead of good news you noticed through careful public research (mosaic theory) — analyzing publicly available information, even intensely and successfully, is lawful. The line is receiving or overhearing MNPI from someone with a duty of confidentiality. If you're ever in a situation where you receive a tip from someone with apparent access to corporate information, don't trade and consider consulting an attorney.

If you're a compliance officer or general counsel responsible for insider trading programs: SEC Rule 10b5-1's 2023 amendments substantially tightened the requirements for valid plans — review your company's existing plans and policies for compliance. Required updates: (1) cooling-off periods for officers and directors (120 days or next quarter-end earnings date, whichever is later); (2) representations at plan adoption that the person is not aware of MNPI and adopts the plan in good faith; (3) only one single-trade plan allowed per 12-month period; (4) only one "active" plan at a time. For your trading window policy: ensure windows open after earnings release and close well before the quiet period; consider extending blackout periods to cover all M&A activity, not just routine earnings. The SEC's increased scrutiny of 10b5-1 plans, documented in enforcement actions from 2021-2023, makes contemporaneous documentation of plan adoption circumstances essential — paper a file showing the plan was adopted when clean.

State Variations

Insider trading is primarily federal law, but:

• State securities laws ("blue sky laws") may provide additional insider trading prohibitions and remedies
• State common law fraud claims may supplement federal securities fraud
• Some states have enacted specific insider trading statutes
• State criminal prosecutors may bring parallel state fraud charges

Implementing Regulations

• 17 CFR 240.10b-5 — SEC Rule 10b-5 — Employment of manipulative and deceptive devices (the primary antifraud rule under which insider trading is prosecuted)

• 17 CFR 240.10b5-1 — SEC trading plans (affirmative defense for trades conducted pursuant to pre-established written plans — plan adoption, cooling-off periods, good faith requirements)

• 17 CFR 240.10b5-2 — SEC duties of trust or confidence (defines relationships creating a duty of trust or confidence for misappropriation theory insider trading)

• 17 CFR 240.16a-1 through 240.16b-7 — SEC Section 16 reporting and short-swing profits (insider reporting obligations, Forms 3/4/5, profit disgorgement)

• 17 CFR 229.408 — Insider trading arrangements and policies (Item 408 — requires disclosure of insider trading policies and whether directors/officers have adopted 10b5-1 plans)

• 17 CFR Part 245 — Regulation BTR (Blackout Trading Restriction): implements Section 306(a) of the Sarbanes-Oxley Act (15 U.S.C. § 7244(a)), which prohibits company directors and executive officers from trading in company equity securities acquired in connection with their service during pension plan blackout periods — when ordinary plan participants are also locked out of trading. Regulation BTR addresses the insider information advantage executives hold during blackouts that ordinary employees do not. Key provisions:

  • § 245.100 — Definitions: "blackout period" means any period of more than 3 consecutive business days during which the ability of at least 50% of U.S.-based plan participants and beneficiaries to purchase, sell, or otherwise acquire or transfer equity securities of the company is temporarily suspended under an individual account plan (401(k), ESOP); the 50% threshold ensures routine single-participant blackouts don't trigger the restriction — only company-wide or near-company-wide trading suspensions count; shares "acquired in connection with service" as a director or executive officer means equity received as compensation (RSUs, stock options, director fees in stock) — not shares purchased in the open market with personal funds
  • § 245.101 — Prohibition: during a blackout period, it is unlawful for any director or executive officer to directly or indirectly purchase, sell, or otherwise acquire or transfer any equity security of the issuer if acquired in connection with their service; the prohibition applies even if the director or executive officer has no knowledge of the blackout — knowledge of the blackout is not required for liability; exemptions include purchases under employer-sponsored benefit plans pursuant to standing elections, required sales to meet tax withholding on vesting restricted stock, and bona fide gifts
  • § 245.102 — Exceptions to blackout period definition: a blackout period does not include regularly scheduled periods (announced in advance in the plan documents) during which participants routinely cannot trade; temporary suspensions lasting 3 or fewer business days; blackouts affecting fewer than 50% of participants; changes in investment options (as opposed to suspensions of trading in existing options)
  • § 245.103 — Recovery of profits: any profit from a prohibited trade is recoverable — by the issuer (who may bring suit to recover) or by any equity security owner (who may bring a derivative suit if the issuer fails to act within 60 days of a written demand); the profit recovery right has a 2-year statute of limitations; this is a strict-liability disgorgement right — proof of actual harm or scienter is not required
  • § 245.104 — Notice requirements: issuers must timely notify directors and executive officers of any blackout period; the notice must be given as soon as reasonably practicable before the blackout, must state the reasons for the blackout, the anticipated beginning and ending dates, and the restrictions on trading; issuers must also file a Form 8-K if the blackout lasts more than 3 days and affects participant investment options; directors and officers who do not receive timely notice have an affirmative defense to liability

  Regulation BTR was enacted in response to the Enron scandal — where executives sold company stock while employees' 401(k) plan investments were frozen during an administrative blackout period, trapping employees while executives cashed out. The statute and regulation create a symmetry rule: executives cannot trade when employees cannot. In practice, blackout periods occur during 401(k) record-keeper transitions, plan mergers, or investment option changes — typically lasting 2-4 weeks. The threshold of 50% of participants creating a covered blackout means companies must track plan participation rates to know when Regulation BTR applies. The profit-recovery right in § 245.103 (with no scienter requirement) creates strict liability exposure for any executive who trades during a qualifying blackout period.

Pending Legislation

No standalone insider trading reform bills have been introduced in the 119th Congress. Securities enforcement provisions appear in broader financial regulation — see Securities Regulation and Dodd-Frank.

Recent Developments

The SEC's 2023 amendments to Rule 10b5-1 significantly tightened the requirements for pre-arranged trading plans — the most important reform in insider trading regulation since the Dodd-Frank Act. The Volcker Rule separately restricts bank proprietary trading that could create insider trading risks. DOJ and SEC continue to bring high-profile insider trading cases, including cases involving cryptocurrency markets (applying traditional securities fraud theories to digital assets). The application of insider trading law to Congressional trading has been a persistent issue — the STOCK Act (2012) confirmed that members of Congress are subject to insider trading prohibitions. Insider trading is often charged alongside wire fraud counts. The growth of information-sharing on social media and online forums (Reddit, Discord) has created new enforcement challenges around tipping and the boundaries of public information.

• Trump memecoin and presidential insider trading concerns (2025): President Trump's launch of the "TRUMP" memecoin two days before his January 2025 inauguration — which rose 10,000%+ before falling sharply — raised unprecedented insider trading questions. The President is exempt from many ethics statutes, including STOCK Act financial disclosure requirements. The SEC under Trump appointee Paul Atkins declined to investigate. Legal scholars debated whether promoting a speculative asset (that the President and family retained) while possessing knowledge of upcoming government crypto policy announcements constituted securities fraud — though most analysts concluded the sparse legal framework for memecoins and presidential activity made prosecution implausible.
• SEC enforcement shift under Atkins (2025): SEC Chair Paul Atkins, a crypto-friendly Republican, shifted SEC enforcement priorities away from crypto securities cases (which had been a Biden-era priority) and toward more traditional securities fraud: financial statement fraud, insider trading, and Ponzi schemes. High-profile Biden-era crypto enforcement actions against exchanges (Coinbase, Binance) were resolved or reduced. Traditional insider trading enforcement — particularly 10b5-1 plan abuse — continued at similar volume. The SEC brought approximately 30-40 insider trading cases annually.
• AI and insider trading: the "mosaic theory" challenge: AI systems can aggregate publicly available information into predictive trading signals that may reflect material non-public information through pattern recognition rather than direct disclosure. The SEC has examined whether trading based on AI-aggregated signals — where no individual piece of information is itself material non-public, but the combination produces insider-like advantage — constitutes actionable insider trading. The "mosaic theory" has historically permitted traders to aggregate public information; the question is whether AI's ability to find patterns humans can't see creates a new category of problematic trading.
• Congress stock trading bills (2025): Multiple bills to ban congressional stock trading — including the ETHICS Act and TRUST in Congress Act — were introduced in the 119th Congress. The STOCK Act prohibits trading on material non-public information but allows trading on public information. New bills would ban members of Congress and their immediate families from owning individual stocks entirely, requiring broad index funds or blind trusts. The bills have bipartisan sponsorship but face resistance from members who benefit from investment flexibility. No stock trading ban has passed either chamber as of 2026.