
insider trading




Shadow Trading, Corporate Investments, and Macroeconomic Risk
Corporate insiders engage in “shadow trading” when they use private information about their own firm to trade in the shares of economically connected companies such as suppliers, customers, or competitors. While legal scholars have long recognized that shadow trading can …




Using ETFs to Conceal Insider Trading
On August 17, 2021, the Securities and Exchange Commission (SEC) filed the first lawsuit charging insider trading in an economically related stock. A former employee of Medivation (MDVN, a mid-sized biopharmaceutical company) was charged for trading on confidential information about …

How to Reform Our Abysmal Insider Trading Framework
The U.S. insider trading framework is a mess. Principles apply that are inconsistent with one another and that treat similarly situated persons in a disparate manner. In my 2021 book and a forthcoming book chapter, I argue that, rather than …
Skadden Discusses Digital Asset Insider Trading Case
On February 7, 2023, Ishan Wahi (Ishan), a former Coinbase product manager, pled guilty to wire fraud charges in an indictment in the U.S. District Court for the Southern District of New York (SDNY).
Ishan admitted that he had used …



Profiting from Rival Firms’ Cyberattacks
In a recent case, the Securities and Exchange Commission (SEC) pursued an unconventional form of insider trading involving Medivation Inc., an oncology-focused biopharmaceutical firm and one of its former, senior executives. According to the SEC, the executive profited from trading …
Skadden Discusses What New SEC Insider Trading Rules Mean for Directors
In December 2022, the U.S. Securities and Exchange Commission (SEC) modified the rules governing preset stock trading programs for corporate insiders, known as 10b5-1 plans, which begin taking effect this year. The new rules will require directors, executives and other …

John C. Coffee, Jr.: The Blaszczak Bombshell and What It Will Mean
United States v. Blaszczak[1] has long been a one-off case that did not fit the mold of the traditional insider trading prosecution, but now — following a 2-1 decision of the Second Circuit in December, reversing most of the …

Market Practices and the Awareness/Use Problem in Insider Trading Law
In a new article, I respond to an article by Professor Andrew Verstein concerning the awareness/use problem in insider-trading law. As many readers know, this problem arises because, although Rule 10b-5 prohibits persons bound by a duty of confidentiality from …
Simpson Thacher Discusses Second Circuit Decision Curtailing Title 18 Insider Trading Liability
On December 29, 2022, the Second Circuit issued its highly anticipated opinion on remand in United States v. Blaszczak (“Blaszczak II”), reconsidering the case following the Supreme Court’s January 2021 vacatur of the Second Circuit’s original decision upholding …



How Social Connections and Information Leaks Affect the Stock Prices of Takeover Targets
The stock prices of takeover targets typically increase substantially prior to merger announcements[1] This increase attracts considerable public attention because it is usually perceived to be associated with the leaking of inside information. Hence, the numerous Securities and Exchange …
SEC Chair Gensler on Final Amendments to Insider Trading Requirements
Today [December 14], the Commission will consider whether to adopt amendments to Rule 10b5-1, as well as new required corporate disclosures related to executive officers’ and directors’ trading. I am pleased to support these new requirements because, if adopted, they …

Fraud on the Crypto Market
Investors now routinely turn to crypto asset trading for portfolio appreciation and diversification, but significant investor protection concerns loom. Between 2017 and 2019, thousands of crypto assets were offered to the public and others through initial coin offerings. Many of …


Insider Trading and Clinical Drug Trials
For at least a quarter century, the Securities and Exchange Commission (SEC) has pursued claims of unlawful insider trading where the information at issue was material to the stock price of the sponsor of a clinical trial. In recent years, …


How Common is Insider Trading? Evidence from the Options Market
The U.S. Securities and Exchange Commission (SEC) brought 51, 30, and 33 insider trading cases in 2018, 2019, and 2020, respectively. Whether those numbers mean that insider trading is relatively uncommon or that the cases regulators and prosecutors have pursued …



Insider Traders Have Found Their Way to Cryptocurrency Markets
On July 21, 2022, the U.S. Securities and Exchange Commission (SEC) commenced the first ever lawsuit charging insider trading in cryptocurrency markets. A former employee of Coinbase – a major cryptocurrency exchange – together with his brother and a friend, …
Skadden Discusses Ramifications of Cryptocurrency Insider Trading Case
On July 21, 2022, the Department of Justice (DOJ) and the Securities and Exchange Commission (SEC) each brought insider trading charges against a former Coinbase product manager, his brother and a close friend for using material non-public information (MNPI) to …
What Are NFTs and Why Are They So Controversial?
Nonfungible token (NFT or Token) was the word of the year in 2021, as NFT sales exceeded $4 billion in monthly trading volume in January 2022 after generating more than $23 billion in sales in 2021. Celebrities including musicians Eminem…
Skadden on Revisiting Share Repurchases in Volatile Times
In light of the recent increased volatility in the global financial markets,1 a number of companies have raised questions regarding the desirability of repurchasing shares at reduced market prices. This alert addresses questions surrounding share repurchases that companies should …

Should All Trading While in Possession of Inside Information Be Illegal?
In a new article, I answer in the affirmative the question posed in the title of this post. In the United States, we should replace our current regime of muddled and confused insider trading law with a sweeping prohibition …