Category: Insider Trading Controls
Material Nonpublic Information
Also known as: MNPI, Material Non-Public Information, Material, Nonpublic Information, Inside Information
Simply put
Material nonpublic information (MNPI) is important information about a company or a security that has not been shared with the general public and that a reasonable investor would likely consider significant in deciding whether to buy or sell that security. Because it is not yet available to the marketplace, someone who holds it may have an unfair advantage over ordinary investors. Trading on MNPI can raise legal risk, though whether such trading is unlawful depends on additional factors and the specific circumstances.
Formal definition
MNPI is information that is both material and nonpublic. Information is generally regarded as material where there is a substantial likelihood that a reasonable investor would consider it important to an investment decision, or where it could significantly affect a security's price; it is nonpublic until it has been broadly disseminated to the marketplace (for example, through a press release or analyst report). MNPI is not limited to information originating within the issuer and may include information about takeover or tender offer activity, market-moving governmental actions, or other third-party matters relevant to a security. Under U.S. federal securities law, possession of MNPI does not by itself make trading unlawful; illegal insider-trading liability generally turns on trading (or tipping) in breach of a fiduciary duty or similar relationship of trust and confidence, and the precise contours of what constitutes 'material, nonpublic' remain the subject of ongoing legal debate. This entry is educational and not legal advice; application to specific facts requires qualified legal counsel and may vary by jurisdiction.
Why it matters
MNPI sits at the center of insider-trading compliance, one of the most heavily scrutinized areas of securities regulation. The core concern is fairness: someone holding information that a reasonable investor would consider important, before that information reaches the marketplace, may hold an advantage over ordinary investors. For compliance programs, MNPI is significant not because possessing it is inherently wrongful, but because trading or tipping on it under the wrong circumstances can create serious legal exposure. It is important to be precise here: under U.S. federal securities law, mere possession of MNPI does not by itself make trading unlawful. Illegal insider-trading liability generally turns on trading or tipping in breach of a fiduciary duty or a similar relationship of trust and confidence. This distinction is frequently misstated, and getting it wrong can lead a program to either overpromise legal protection or misdirect its controls.
Who it's relevant to
Compliance officers and securities compliance teams
These teams design and maintain controls intended to prevent improper trading or tipping, such as restricted lists, trading windows, and pre-clearance procedures. Understanding that liability turns on trading or tipping in breach of a duty, not on possession alone, helps them build controls that are accurate rather than overbroad, and to avoid implying that any control guarantees legal protection. Application to specific facts should involve qualified legal counsel.
Ethics program managers and training designers
MNPI is a common training topic because employees may encounter sensitive information through their roles without recognizing it as material or nonpublic. Training is intended to help employees identify potential MNPI and follow escalation and pre-clearance procedures, but a training module is only one component of a broader program and does not by itself establish or ensure a defensible compliance posture.
Legal and audit teams
Because there is no clear-cut definition of material, nonpublic information and because insider-trading liability depends on the fiduciary-duty or trust-and-confidence element and the specific circumstances, legal counsel is central to assessing particular situations. Audit teams may test whether controls such as restricted lists and pre-clearance are functioning, while recognizing that the legal determination of what constitutes MNPI is fact-specific and may vary by jurisdiction.
Employees with access to sensitive information
Personnel in finance, legal, corporate development, executive functions, and others who may handle nonpublic information relevant to a security are directly affected. This includes not only information originating within the company but also matters such as pending takeover activity or market-moving governmental actions. Such individuals are generally expected to follow their organization's policies and to seek guidance before trading when uncertain.
Inside MNPI
Materiality
Information is material if there is a substantial likelihood that a reasonable investor would consider it important in making an investment decision, or that it would significantly alter the total mix of information available. Materiality is a facts-and-circumstances judgment rather than a fixed threshold; borderline cases should be assessed with qualified legal counsel.
Nonpublic Status
Information is nonpublic until it has been broadly disseminated to the marketplace and the market has had time to absorb it. Limited or selective disclosure does not make information public. Determining when information becomes public can be fact-specific and may require legal input.
Sources and Subject Matter
MNPI is not limited to a person's own company. It can relate to third parties (such as a counterparty, supplier, or acquisition target), to pending take-over bids or tender offers, or to market-moving government actions, provided the information is material and nonpublic in relation to a security.
Duty or Relationship Element
In the U.S., insider-trading liability generally arises when a person trades on MNPI in breach of a fiduciary duty or a similar relationship of trust and confidence, or misappropriates the information. Possession of MNPI alone is not automatically unlawful; the breach of duty is a central element.
Relevant U.S. Authorities
Commonly referenced authorities include Rule 10b-5 under the Securities Exchange Act (fraud in connection with securities trading), Rule 14e-3 (addressing trading around tender offers), and Regulation FD (governing selective disclosure by issuers). These are U.S.-specific; other jurisdictions have their own regimes. Specific application should be confirmed with primary sources and legal counsel.
Tipping
Liability can extend beyond the person who trades to those who improperly pass MNPI to others (tippers) and to recipients who trade on it (tippees), depending on the circumstances and the applicable legal standard. Exact standards vary and should be verified against primary sources.
Common questions
Answers to the questions practitioners most commonly ask about MNPI.
If someone simply possesses MNPI, is it automatically illegal for them to trade?
No. Possession of MNPI alone does not automatically create insider-trading liability in the United States. Illegal insider trading generally requires trading on MNPI in breach of a fiduciary duty or a similar relationship of trust and confidence, or through misappropriation of that information. The breach-of-duty element is central to liability under the securities laws and is often analyzed under Rule 10b-5. Because these determinations are fact-specific and depend on the relationship through which the information was obtained, questions about potential liability should be directed to qualified legal counsel. This entry is educational and not a substitute for legal advice.
Does MNPI only refer to information about one's own company?
No. While MNPI frequently involves information about the trading company itself, it is not limited to that. Material nonpublic information can also relate to other entities, to pending take-over or tender offer activity, to market-moving government actions, or to other third-party information relevant to the price of a security. Different authorities may apply depending on the context; for example, Rule 14e-3 addresses information relating to tender offers. Compliance programs should account for MNPI arising from sources beyond the employee's own employer, and specific situations should be reviewed with legal counsel.
How should a compliance training module help employees recognize what qualifies as MNPI?
A training module can help employees apply the two-part concept: information is material if a reasonable investor would likely consider it important to an investment decision, and nonpublic if it has not been broadly disseminated to the market. Training is intended to build recognition skills using realistic scenarios rather than to make employees legal decision-makers. It should direct employees to escalate uncertain situations to compliance or legal rather than self-assessing. Training is one component of a broader program and does not by itself satisfy an organization's insider-trading controls; effectiveness depends on how it is designed, reinforced, and integrated with policies and monitoring.
What controls commonly accompany MNPI training within a broader compliance program?
MNPI training typically operates alongside distinct program elements such as an insider-trading policy, trading windows and blackout periods, pre-clearance procedures, restricted or watch lists, information barriers between functions, and monitoring of employee trading. Regulation FD is a separate U.S. requirement addressing selective disclosure of MNPI by issuers to certain market participants and is generally handled through disclosure controls rather than employee trading policies. These controls are complementary; no single element guarantees prevention of misconduct, and their design should be confirmed against applicable law and primary sources.
How can employees handle a situation where they are unsure whether information is material or nonpublic?
The generally recommended practice is to refrain from trading and to escalate the question to compliance or legal before acting, rather than making an independent judgment. Programs often provide a designated contact or pre-clearance process for exactly these situations. Because materiality and public availability are fact-specific determinations that can vary with circumstances and jurisdiction, employees should not rely solely on their own assessment. This approach is intended to reduce risk but does not itself provide legal protection; specific matters require qualified legal counsel.
How should training address MNPI obtained from third parties or outside an employee's own company?
Training can present scenarios in which employees receive information about counterparties, clients, acquisition targets, suppliers, or pending government actions, and clarify that such information may qualify as MNPI even though it does not concern the employer directly. The intent is to reinforce that the source of the information and any related duties of confidentiality matter, and that misappropriation of another party's confidential information can raise liability concerns. Because the analysis depends on the relationship and applicable law, uncertain cases should be escalated to legal counsel. This entry is educational and not a substitute for professional advice.
Common misconceptions
Simply possessing MNPI makes any subsequent trade illegal.
Under U.S. federal securities law, illegal insider trading generally requires trading on MNPI in breach of a fiduciary duty or similar relationship of trust and confidence, or through misappropriation. Mere possession alone is not automatically unlawful, though firms often impose stricter internal trading restrictions than the law requires.
MNPI only refers to information about one's own employer.
MNPI can involve third-party information, such as details about a counterparty, an acquisition target, a pending take-over bid, or anticipated market-moving government action, when that information is material and nonpublic in relation to a security.
MNPI is purely a compliance (legal-adherence) topic with no ethics dimension.
Handling MNPI involves both a compliance obligation, given binding securities laws and defined consequences, and values-based judgment about fairness and trust. Well-designed programs address both, but a training module on MNPI is only one component of a broader program and does not by itself satisfy legal requirements.
Best practices
Establish clear, written policies defining MNPI, restricted and blackout periods, and pre-clearance procedures, and confirm the specifics with qualified legal counsel given jurisdictional variation.
Train relevant personnel that the risk turns on the duty or relationship element and improper use, not on possession alone, while noting that firm policies may be stricter than the legal minimum.
Address the full scope of MNPI in training, including third-party information, take-over bids, and market-moving government actions, not only information about the employer.
Implement information barriers and access controls to limit who receives MNPI and to document when and how information becomes public.
Reference the applicable authorities accurately for the relevant jurisdiction (for U.S. programs, for example, Rule 10b-5, Rule 14e-3, and Regulation FD) and direct novel or borderline questions to legal counsel.
Reinforce that this guidance is educational, that outcomes depend on implementation and context, and that specific transactions require review by qualified professionals rather than reliance on a glossary entry.