WASHINGTON — The Securities and Exchange Commission announced a major milestone today in its ongoing enforcement efforts against financial market misconduct, moving for the entry of a final judgment by consent against Stephen Kenneth Leech II. Leech, the former co-chief investment officer of registered investment adviser Western Asset Management Company LLC, was previously charged by the federal regulator with orchestrating a sophisticated, multi-year cherry-picking allocation scheme that manipulated futures market trades to favor certain portfolios at the direct expense of others.
Court approval of the proposed final judgment would mark a significant step forward in a broader regulatory and legal crackdown that, combined with a previous corporate settlement, will result in a total of $103 million being returned to harmed investors. The development underscores the federal government’s continued focus on protecting institutional and retail clients from fraudulent practices by high-ranking investment professionals.
The core of the SEC’s case against Leech stems from a comprehensive complaint originally filed in November 2024. According to the regulatory filings, Leech engaged in a fraudulent allocation strategy spanning at least from January 2021 through October 2023. During this multi-year period, Leech routinely executed futures market trades and deliberately delayed assigning those trades to specific client accounts until very close to, or even after, the futures markets established their daily settlement prices.
This calculated delay gave Leech a distinct and unlawful informational advantage. By observing how prices moved throughout the trading session before committing trades to specific portfolios, he was able to disproportionately allocate hundreds of millions of dollars in realized and unrealized first-day gains to favored portfolios. Conversely, the disfavored portfolios under his management were saddled with a virtually identical amount of realized and unrealized first-day losses. This discriminatory practice fundamentally violated the basic fiduciary duties of loyalty and fair treatment that investment advisers owe to all of their clients.
Faced with these severe civil allegations, Leech has chosen to resolve the matter through a consent agreement. Without formally admitting or denying the allegations set forth in the SEC’s complaint, Leech consented to the entry of a final judgment, which now awaits final approval from the federal court.
Under the terms of the proposed judgment, Leech would be ordered to pay a substantial $3 million civil monetary penalty. Additionally, the judgment would impose a strict officer-and-director bar, prohibiting him from serving in leadership roles for public companies, and permanently enjoin him from violating the core antifraud provisions of the federal securities laws. Beyond the civil penalties and injunctions, Leech has also agreed to a forthcoming administrative associational bar, which will formally prevent him from associating with any broker, dealer, investment adviser, municipal securities dealer, municipal advisor, transfer agent, or nationally recognized statistical rating organization.
The resolution involving Leech directly builds upon earlier enforcement actions taken by the Commission against his former employer. In June 2026, the Commission instituted settled public administrative proceedings against Western Asset Management Company LLC. In that administrative order, the firm was penalized with a $100 million civil fine. Furthermore, the SEC established a specialized Fair Fund specifically designed to collect and distribute money back to the affected investors whose portfolios were unfairly burdened with losses during the multi-year scheme.
Brent Wilner, Associate Director of the SEC’s Los Angeles Regional Office, emphasized the gravity of the misconduct and the significance of the financial recovery for the victims. "The conduct by Leech and Western Asset was an egregious breach of fiduciary obligations to their clients," Wilner said. "Together, the resolution with Leech, if approved by the court, and the SEC’s prior settlement with Western Asset will return $103 million and provide meaningful relief to harmed investors, and reinforce that advisers must put clients first, every time."
The civil enforcement actions by the SEC are only one facet of the legal reckoning facing the former investment executive. Also in June 2026, running parallel to the regulatory proceedings, Leech appeared in U.S. District Court in the Southern District of New York, where he pleaded guilty to criminal charges of obstruction of justice.
The criminal charge was brought against Leech after federal investigators discovered that he had provided false and misleading testimony directly to the SEC during the course of its investigative proceedings. Providing deceptive statements to federal regulators constitutes a serious federal crime that significantly compounds the civil infractions tied to the investment fraud. Legal representatives for the government and the defense have indicated that Leech’s formal sentencing hearing will take place in the coming weeks, where he faces potential prison time and additional criminal penalties.
The successful exposure and prosecution of the scheme required close coordination between multiple federal authorities. The SEC formally acknowledged and expressed appreciation for the substantial assistance and collaborative efforts provided by the U.S. Attorney’s Office for the Southern District of New York and the Federal Bureau of Investigation, highlighting a unified front among financial regulators and law enforcement agencies in combating white-collar crime and safeguarding the integrity of the nation’s financial markets.
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