What Is Rule 10b-5?

What Is Rule 10b-5?

In 1934, the U.S. Securities and Exchange Commission (SEC) introduced Rule 10b-5 as a measure to prevent securities fraud. Later, in 2000, two rules, Rule 10b5-1 and Rule10b5-2, were established to provide updated legal viewpoints on securities fraud. Rule 10b-5 pertains to insider trading, wherein confidential information is utilized to manipulate the market in one's own favor. Effective February 27, 2023, Rule 10b5-1 has been updated to provide insiders with proactive measures to prevent the appearance of insider trading.


The Securities Exchange Act of 1934 introduced a pivotal regulation known as Rule 10b-5, designed to combat securities fraud. This regulation strictly prohibits any individual from employing deceptive tactics, disseminating false information, omitting pertinent details, or engaging in any fraudulent activities during stock and securities transactions.

Formally titled the "Employment of Manipulative and Deceptive Devices," Rule 10b-5 serves as a crucial safeguard in maintaining the integrity of the financial markets. Its implementation aims to ensure fair and transparent dealings while protecting investors from deceitful practices.

How Does Rule 10b-5 Work?

Rule 10b-5 serves as the primary foundation for the U.S. Securities and Exchange Commission in its pursuit of investigating potential cases of security fraud. Various violations fall under this rule, encompassing scenarios where executives disseminate false information to inflate share prices, companies resort to creative accounting practices to conceal significant losses or low revenue, and actions are taken to ensure higher returns for existing shareholders through undetected deception. These fraudulent schemes often rely on sustained misleading statements to achieve their objectives.

Moreover, Rule 10b-5 extends its reach to instances where executives deliberately issue false statements to artificially depress a company's stock value, intending to acquire more shares at discounted rates. These manipulative activities, along with the misuse of confidential information, constitute insider trading.

In addition to illicit gains or the attraction of new investors, these schemes may also be employed to strategically gain control over a company by altering the shareholder balance. Such practices pose serious threats to the integrity of the financial markets and necessitate rigorous investigation and enforcement by the SEC to maintain investor confidence and safeguard the fairness of transactions.

Rule 10b5-1 and Rule 10b5-2: Enhancing Insider Trading Regulations

In 2000, the SEC made notable progress in tackling securities fraud by implementing Rule 10b5-1 and Rule 10b5-2. These regulations brought insider trading into a contemporary, legally defined framework.

Rule 10b5-1 specifically addresses trading activities based on material nonpublic information (MNPI). If an individual is found to be aware of such information while engaging in securities transactions, it falls under the purview of this rule.

However, certain exceptions and conditions within Rule 10b5-1 allow individuals to proceed with trading even if they possess MNPI. These exceptions apply to trades pre-established through contracts or processes unaffected by the knowledge of confidential information.

In parallel, Rule 10b5-2 highlights that securities fraud can occur even under non-business circumstances. This rule illuminates the application of the misappropriation theory, which posits that individuals using insider information for securities trading commit fraud against the information source, even if they are not insiders themselves.

Moreover, Rule 10b5-2 establishes an obligation of trust for individuals who obtain confidential information. This heightened duty underscores the importance of maintaining confidentiality and preventing the misuse of such privileged data. The combined effect of these regulations bolsters the SEC's efforts in curbing illicit insider trading and upholds the integrity of financial markets.

Affirmative Defense under Rule 10b5-1(c): Ensuring Transparency in Securities Transactions

Rule 10b5-1(c) employs an affirmative defense, a legal concept that involves taking precautionary measures before an event occurs. Similar to placing orange hazard cones on a broken sidewalk slab to warn pedestrians of potential danger, the affirmative defense in the securities industry is applied to transactions that could be perceived as insider trading or involving material nonpublic information.

To achieve this, companies or insider executives establish 10b5-1 trading plans, detailing the time period, quantity, and prices of securities involved in the transactions. By adhering to these predetermined plans, executives can avert any suspicion of insider trading and publicly disclose their trading intentions, promoting market transparency and benefiting everyday investors.

On February 27, 2023, insiders made certain adjustments to the use of the affirmative defense doctrine. Under these rules, insider trading pertains to planned securities sales by officers, directors, and individuals with access to MNPI. Through the implementation of affirmative defense mechanisms like the 10b5-1 plan, the securities markets become akin to the "orange safety cones," signaling transparency and safeguarding against potential abuses.

2023 Amendments to Insider Trading Rules

In early February 2023, significant changes were introduced to enhance and clarify regulations pertaining to insider trading activities.

Mandatory Cooling-Off Period (Rule 10b5-1(c)(1)) 

Directors and Section 16 officers seeking to trade their company's stock is now required to adhere to a cooling-off period. This period begins either 90 days before activating the 10b5-1 plan or two business days after disclosing the issuer's financial results for the relevant quarter in which the program was adopted. The purpose of this cooling-off period is to prevent the appearance of insider trading by establishing transaction plans well in advance.

Restriction on Multiple Overlapping Plans (Rule 10b5-1(c)(2)) 

Individuals with existing 10b5-1 plans are prohibited from creating additional programs that overlap with the same time period defined under 10b5-1(c)(1). This measure aims to prevent the hedging of existing plans, ensuring fairness for the general investing public.

Restriction on Single-Trade Arrangements (Rule 10b5-1(c)(3)) 

The new regulation allows the affirmative defense to be applied to single-trade plans for individuals, excluding issuers, during any 12-month period. However, this is subject to the condition that no other 10b5-1 plan for single transactions was enacted within the last 12 months or meets Rule 10b5-1(c) requirements. Qualified sell-to-cover transactions made for tax purposes are an exception to this restriction.

Officer and Director Certifications (Rule 10b5-1(c)(4)) 

Directors and Section 16 officers are now required to declare in their 10b5-1 plans that they possess no material nonpublic information and that their participation is in good faith, with no intent to evade Rule 10b-5 prohibitions.

Good-Faith Condition (Rule 10b5-1(c)(5)) 

All 10b5-1 plans must include a certification that the plan owner (insider) is acting in good faith throughout the plan's duration. This regulation aims to prevent insiders from influencing others to favorably impact their 10b5-1 plans. Violation of the good-faith rule removes the affirmative defense option and exposes the plan owner to penalties for insider trading violations. These amendments signify a critical step in fostering transparency and fairness in securities markets.

How Can Senior Officers or Directors Comply With Insider Trading Regulations While Trading Securities?

Senior company officers or directors can employ an affirmative defense strategy to avoid any suspicion of insider trading. By establishing a pre-arranged plan in advance, insiders (90 days) or outsiders (30 days) can transact (sell or buy) securities of their company without violating insider trading rules.


Rule 10b-5 enforces stringent regulations against insider trading, defining material nonpublic information (MNPI) and outlining the potential violations that can lead to penalties and fines for insiders. To address these concerns, Rule 10b5-1 allows senior company officials to engage in company stock transactions while evading insider trading restrictions. By devising pre-planned trading strategies, insiders can adopt an affirmative defense, safeguarding their actions in advance.

Rule 10b-5
Insider Trading
Material Nonpublic Information (MNPI)
Follow us
Hexn operates under HEXN (CZ) s.r.o. and HEXN Markets LLC. HEXN (CZ) s.r.o. is incorporated in the Czech Republic with the company number 19300662, registered office at Cimburkova 916/8, Žižkov, Praha. HEXN (CZ) s.r.o. is registered as a virtual assets service provider (VASP). HEXN Markets LLC is incorporated in St. Vincent and Grenadines with the company number 2212 LLC 2022, registered office at Beachmont Business Centre, 379, Kingstown, Saint Vincent and the Grenadines