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Perrie M. Weiner

Partner at Baker McKenzie LLP

Perrie M. Weiner's profile photo
LocationLos AngelesUnited States
Current rolePartnerBaker & McKenzie LLP · since Sep 2025
Government service1yrU.S. District Court

About

Perrie is a prominent securities litigation attorney with over 30 years of experience, renowned for his unwavering commitment to providing top-tier service and delivering exceptional results. He currently serves as the Partner-in-Charge of Baker McKenzie's Los Angeles office, and holds the esteemed position of Chair for the Firm's North America Securities Litigation Group. Perrie's experience centers around securities class action and shareholder derivative litigation, as well as SEC enforcement matters. He is highly regarded as the "go-to advocate" for hedge funds navigating complex suits and CEOs facing off against the US Securities and Exchange Commission, earning accolades from prestigious legal publications such as Law 360.

Perrie's exceptional reputation is further supported by testimonials from clients and other influential sources such as the Legal 500 US and Chambers USA, where he is praised for his problem-solving prowess, exceptional leadership, and outstanding legal acumen. He has earned the trust and approval of major companies like American International Group, Inc. (AIG) and XL Group PLC, making him one of the select few lawyers in California to represent directors and officers in complex (class action) securities litigation matters.

As a key player in the growth and leadership of Baker McKenzie's North America Securities Litigation Group, Perrie has helped position the team among the top tier in the highly regarded US Legal 500 rankings for consecutive years. Recognized by US Legal 500 as a Leading Individual in Litigation: Securities in California, Perrie's influence extends beyond legal circles. He has been honored as a Leader of Influence: Litigators & Trial Lawyers by the LA Business Journal and has been named one of the Top 100 Lawyers and Top 500 most influential people in LA. His dedication to pro bono legal work has been acknowledged with prestigious awards, including the Albert Nelson Marquis Lifetime Achievement Award and the Wiley W. Manuel Award. He also received the prestigious Burton Award, revered as the Pulitzer Prize of the legal profession, for excellence in legal writing, where a work he co-authored was inducted into the Library of Congress.

Roles

Sep 2025–Present
Current role

Partner

Baker & McKenzie LLP

Los Angeles, California

Civil LitigationMergers and AcquisitionSecuritiesLaw Firm AdministratorSecurities LawWhite Collar CrimeAppellate Litigation

Perrie brings a holistic approach to advocacy, skillfully defending clients facing high-profile and intricate regulatory actions, as well as securities fraud class action cases across the United States. His diverse clientele includes private equity funds, hedge funds, broker-dealers, underwriters, placement agents, REITS and publicly held issuers (alongside their officers and directors).  Perrie also handles M & A securities litigation, where business combinations or sales are being challeged because of alleged deficient public disclosures.  Perrie's expertise extends to SEC and FINRA enforcement proceedings, as well as white-collar criminal proceedings.

Beyond his outstanding work in securities matters, Perrie's legal acumen shines in complex business litigation. He has successfully represented clients in California consumer privacy class actions involving alleged violations of the Right to Privacy, such as TCPA, CCPA, "call recording," data breach, cybersecurity, and more. Additionally, Perrie leads the Firm's global SPAC Rapid Response Team and is a prominent authority in Special Purpose Acquisition Company (SPAC) and de-SPAC M&A securities class action litigation, including related SEC enforcement.

His innovative approach and unwavering commitment to serving clients led to his establishment of the Firm's Lease Litigation and Restructuring Group (LLRG) during the global COVID-19 pandemic. Perrie, alongside a multi-disciplinary team of Baker McKenzie lawyers, provides crucial assistance to retailers, tech companies, physicians with surgery centers, law firms, and various tenants negatively impacted by pandemic-related disruptions. He skillfully navigates lease renegotiations, restructurings, and landlord-litigated disputes, supporting clients during challenging times.

Perrie's international practice adds another layer of distinction to his career, with numerous litigation victories and publications featured in renowned media outlets such as Time, Business Week, Forbes, The Wall Street Journal, and The Economist, among others. His expertise extends to representing domestic and international market participants, including Chinese issuers traded in the US, in a wide array of securities litigation and enforcement matters, accompanied by expert pre-litigation crisis management counseling.

He is also a recognized securities expert in the areas of short selling, naked short selling, "pump and dump" and "short and distort" litigation--where self proclaimed analysts short the stock of a thinly traded public company, put out an intentionally or recklessly false negative report about the company, draw in other short sellers causing the stock's price to fall precipitously, thereby reaping a windfall profit from their short selling activity.

Dec 1982–Present
Current role

Member

The Phi Beta Kappa Society

Los Angeles, California

Education, Curriculum and Teaching

Elected to UCLA's prestigious Phi Beta Kappa chapter, which honors outstanding liberal arts and sciences undergraduates from 290 top schools across the nation through a rigorous and highly selective, merit-based invitation process.

As America’s most prestigious academic honor society, Phi Beta Kappa has championed education in the arts and sciences, fostered freedom of thought, and recognized academic excellence.

Sep 2002–Jul 2019
Former role

Managing Partner, Los Angeles Region | Global Co-Chairman, Securities Litigation

DLA Piper LLP (US)

Los Angeles, California

Civil LitigationSecuritiesSecurities Law
Jan 1988–Jan 2002
Former role

Attorney

Brobeck, Phleger & Harrison

Legal Officers and Practitioners
Jan 1986–Jan 1987
Former role

Judicial Law Clerk

U.S. District Court

(appointed)California

Law ClerkResearchLegal Assistance

Served as judicial law clerk to the Honorable John R. Kronenberg, researching and drafting opinions, orders, and bench memoranda.

Jan 1985–May 1985
Former role

Judicial Extern

U.S. District Court

(appointed)California Central District

Law ClerkResearchLegal Assistance

Judicia extern to the Honorable Ralph J. Geffen.

Representative matters

Client Testimonials

September 2025

"Perrie is a great lawyer and a true expert in his field. He is also a pleasure to work with and provides very sound advice and guidance." - Chambers USA "Perrie is an exceptional lawyer." - Chambers USA "Perrie always makes you feel as if you are his only and most important client." - Chambers USA "Perrie provides a depth of knowledge and experience that results in strong support for his client's interests. Excellent communications, oral and written." - Chambers USA "Perrie is one of the brightest attorneys in the corporate and securities arena." - Chambers USA Perrie is a "go-to advocate for hedge funds facing complex suits and CEOs squaring off against the US Securities and Exchange Commission." – Law 360 "Perrie's personal, litigation, negotiation and strategy development skills are superior, as well as his in-depth experience with, and knowledge of, commercial and securities law." – Chambers USA "Perrie really has a great deal of experience and expertise in securities class action law. He's also very responsive." – Chambers USA "He's sharp, responsive and quick." – Chambers USA "Perrie Weiner is outstanding in terms of his knowledge and expertise, as well as being very commercial and pragmatic in his approach." – Legal 500, Securities Litigation "My knowledge of the firm’s strengths is primarily through Perrie Weiner. The firm’s international breadth is very useful when we have questions about the application of a particular country’s laws. Perrie has quickly put us in touch with the experts in the particular country, which has been invaluable." – Legal 500, Securities Litigation "I have worked with Perrie Weiner for over 20 years, when he was at several different firms. We have used him on a number of matters – we have followed him to represent us at each new firm. Perrie is currently working for us on a class action securities matter where he took over representation from another law firm – the initial law firm selection was made by a co-defendant, not us. Perrie is an excellent securities litigator. He recognizes the legal issues and business imperatives, and works hard to get through the matter to a cost-efficient resolution. I highly recommend him without reservation." – Legal 500, Securities Litigation

Securities Litigation

September 2025

-Substituted into a California securities litigation to defend a U.S. publicly held Biopharma Company, that was at risk of a default being entered, where there was a tax delinquency and a problem with the company's name registration. After quickly correcting all of these deficiencies, Perrie and his team brought a motion to dismiss. Based on the strength of the motion, plaintiff voluntarily dismissed the case. . -Represented a building products company in litigation arising from its merger with another building products company. The case included federal securities actions in the Eastern District of New York and alleged insufficient information in the company's merger recommendation to shareholders. Not only did Perrie and his team manage to push back and get the merger to close on time, but also quickly defeated and resolved the litigation. -Represented a London-based client in the dismissal of a jurisdictional challenge in the Central District of California, in an effort to attach the assets of a Geneva trust worth approx. USD 1 billion. Also successfully represented the client in subsequent related litigation, as well as others named as defendants in the case. -Represented a publicly held Biopharma company and three of its officers in a putative securities class action. The complaint alleged that the company made false and/or misleading statements and did not properly disclose the efficacy of their liver cancer treatment, ThermoDox. Perrie and his team won the motion to dismiss. -Represented an investor in a highly publicized alleged "pump and dump" scheme resulting in the dismissal of a putative class action (Takata v. Riot Blockchain). The operative complaint alleged that the investor and other Defendants, acting as members of an investor-control group, amassed a controlling interest in publicly-traded Riot Blockchain. Perrie and his team won the motion to dismiss, while it was denied as to the other co-defendants. -Represented a significant micro-cap investor with holdings of USD 240 million shares of a public company. deposited with a Canadian brokerage. Our engagement came after the public company attempted to cancel the client's entire holdings during a spike in share-price valuation, obstructing their ability to sell or transfer the shares, which Perrie and his team were able to fully reverse. -Represented an underwriter, where we won a motion to dismiss a securities class action complaint, and where a follow on motion to dismiss the amended complaint resulted in a quick settlement with plaintiffs and where co-defendant issuer fully indemnified the underwriter.

SPAC Securities Litigation

September 2025

-Represented the target defendant in a de-SPAC M & A transaction in the partial dismissal of a putative securities class action complaint alleging material misrepresentations and omissions related to stockholders who purchased its stock between October 7, 2020 and July 31, 2021. -Represented the target defendant in a Derivative Action alleging material misrepresentations and omissions related to stockholders who purchased the stock between October 7, 2020 and July 31, 2021. -Represented the target and certain of its officers and directors in an action by an investor in the Complex Commercial Litigation Division of New Castle County Superior Court, Delaware alleging fraudulent inducement and breach of contract around a "liquidity event" triggered when the Company completed the de-SPAC merger in August of 2021. -Represented a commercial space company against allegations made by its former cofounders who had signed a National Security Agreement and Stock Repurchase Agreement, agreeing to divest their interests in the company. Despite this, one of the cofounders filed a complaint in the Delaware Court of Chancery seeking indemnification and advancement, leading to a motion to dismiss by our client. The outcome, confirmed on appeal, holds significant precedential value in the evolving realm of SPAC litigation within Delaware. -Represented the target in numerous "books and records" demands filed under Section 220 of Title 8 of the Delaware Code seeking shareholder inspection of documents related to pre de-SPAC merger topics.

Securities: Naked Shorting Litigation

September 2025

Most recently, represented a large international financial institution and broker-dealer in a precedent setting motion to dismiss victory over alleged claims of abusive naked short selling, while the case proceeded as to other co-defendants.

SEC Investigations/Enforcement

September 2025

-Represented a hedge fund and two of its principals in a non-public SEC investigation (resulting in the issuance of a Wells Notice) into purported insider trading and tippertippee liability with regard to the stock of three public companies. Perrie and his team wrote several white papers in response to the Wells Notice, and had multiple calls at the highest levels of the SEC, where they turned the case around, and the SEC not only didn't file an enforcement action, but issued a letter terminating the investigation. -Represented an investment adviser in a two-year SEC insider trading investigation concerning the issuer and tipper/tippee liability. In this particularly complicated case (as the investment adviser was both on the board of the public company being investigated and an officer of the investment bank, which was the investment banker on the deal), a successful notice of termination of the investigation by the SEC was achieved along with indemnity from the issuer. -Represented a public company and two of its officers in the successful termination of an SEC investigation regarding suspected insider trading. -Represented a publicly held Biopharma company and two of its officers and directors in an SEC investigation connected with a purported broader "pump and dump" scheme that generated more than USD 165 million of illegal sales of stock in at least 50 microcap companies. This case resulted in no action taken by the SEC against our clients. -Achieved a significant victory by successfully defending a hedge fund client under SEC scrutiny for alleged market manipulation and securities fraud following a cannabis start-up IPO. Initially avoiding substantive defendant status, the SEC Staff agreed to only naming our client and his wife as mere relief defendants. Through strategic maneuvering, however, including a well-timed white paper submission, we successfully persuaded the SEC to exclude our clients entirely from the enforcement action, saving them from a potential $2.5 million liability plus pre-judgment interest.

Complex Litigation

September 2025

Secured a significant and high-profile victory for a fertility clinic in a case involving a widely publicized matter concerning "mixed up" embryos implanted in three women in Los Angeles, California, on the same day (including one woman domiciled in N.Y., although visiting Los Angeles for this procedure). This $25 million claim filed by the N.Y. resident mother originally was filed in New York, and had powerful jury appeal, as the two children born to the New York mother had to be rightfully returned to the biological mothers/families in LA. Leveraging the $250k medical malpractice cap in California, Perrie and his team won a motion to transfer the case from New York (which had no medical malpractice cap) to California, drastically reducing the client's exposure risk from $25 million to $250,000. The case settled shortly after it was transferred to Los Angeles, for a di minimis sum.

Securities: Hedge Fund Death Spiral/PIPEs (Private Investment in Public Equities) Litigation

September 2025

-First in Texas, and then in New York federal court, defense of an investment advisor and its principals in a purported death spiral securities fraud action against claims of unlawful market manipulation and fraudulent misrepresentations arising out of a securities purchase agreement for future priced securities. Based on the strength of the motion for judgment on the pleadings, and in order to avoid Rule 11 sanctions, plaintiffs voluntarily agreed to dismiss their complaint with prejudice and without any payment or consideration. -In Nevada federal court, defense of an investment advisor based in the United States, its principals and certain offshore investment funds, in a purported death spiral securities fraud action against claims of unlawful market manipulation and fraudulent misrepresentation arising out of a securities purchase agreement for future priced securities. Plaintiff voluntarily dismissed its action, and we obtained a judgment of USD 1 million for our client on its own claims against the plaintiff.

Securities: Broker-Dealer Naked Shorting Litigation

September 2025

-In Texas, defense of a number of national broker-dealers including market makers in a purported naked shorting state securities fraud action against such alleged claims as unlawful market manipulation, RICO and common law fraud. After removing the action from Texas state to Texas federal court based on a federal preemption argument, we successfully moved to dismiss the case. -In Nevada federal court, representation of multiple national broker-dealers including a market maker in a naked shorting securities fraud action against such claims as unlawful market manipulation, RICO and common law fraud. The court granted our motion to dismiss the case.

Securities: Other

September 2025

-Representation of the CEO of a major Fortune 500 public company in five shareholder derivative lawsuits, an SEC investigation in California, ERISA class actions, and a US Attorney investigation in the Eastern District of New York regarding allegations of "options back dating." The government investigations were terminated with no enforcement action against the client and the private civil litigation was resolved favorably for the client. -Representation of the officers and directors of a publicly-traded regional bank in a shareholder derivative lawsuit alleging that the defendants rigged an internal investigation to reach a predetermined result. Obtained a complete victory for the defendants on summary judgment. -Representation of a nationally recognized Broker-Dealer in Auction Rate Securities litigation pending across the United States, including securities class actions, SEC investigations, and FINRA investigations. All of these cases were successfully resolved with no action being taken by the government and with all cases being dismissed. -Representation of a nationally recognized Broker-Dealer in the "Reserve Fund" litigation.

Complex Commercial and Business Tort Litigation

September 2025

-In Los Angeles Superior Court, prosecution of an action for breach of a loan and option to purchase stock agreement against a privately held technology company. When the court indicated at oral argument that it would grant our motion for summary judgment, we entered into a settlement with the defendant hereby our client received a payment of approximately USD 1 million and five percent of he authorized stock of the defendant. -In Los Angeles Superior Court, prosecution of an action for breach of fiduciary duty and other tort claims on behalf of the largest US privately held computer software company. It was discovered that the then-vice chairman had usurped and diverted a USD 3 million stock investment opportunity (turning out to be worth more than USD 70 million), belonging to a client, to a single purpose venture that he had formed. The case settled on terms very favorable to our client, but which were made confidential by the terms of the settlement agreement.

Lease Litigation & Restructuring

September 2025

-Represented a makeup studio (with numerous stores in shopping centers around the U.S.) and leader in virtual makeup classes in multiple lease negotiations and litigation matters due to COVID-19. All of the matters were successfully resolved, for di minimis amounts. -Represented a publicly held American music retailer chain with over 250 locations in lease litigation matters throughout the United States. All matters were successfully resolved, for di minimis amounts. -Represented a high profile Beverly Hills plastic surgeon with a large surgery center in lease negotiations due to COVID-19. -Represented a web designer for K-12 schools using intuitive content management software in COVID-19 related lease litigation. The matter was successfully resolved for a diminimis sum. -Represented a fintech company in ongoing COVID- 19 related lease litigation and actions for declaratory relief, recently successfully resolved for a di-minimis sum.

Securities: China Reverse Mergers

September 2025

-Representation of a Hong Kong investment bank and a related California-based brokerdealer, in a private securities fraud lawsuit in the Central District of California, ultimately obtaining dismissal for our clients on summary judgment. -Representation of an AMEX-traded Chinese company and several of its officers and directors in a securities class action involving allegations that, among other things, the company's finances as reported in its SEC filings did not correspond with financial results the company reported to the SAIC, and that the company overpaid for several significant assets. The case was pending in the Central District of California, and, while the motion to dismiss was pending, was settled for a di minimis sum.

Recognition

Honors

Top 100 Lawyers

Los Angeles Business Journal's

January 2024

Named one of Los Angeles Business Journal's Top 100 Lawyers, 2023-2024

Top 500 Most Influential People in LA

Los Angeles Business Journal's

January 2024

Named one of Los Angeles Business Journal's Top 500 Most Influential People in LA, 2023-2024

Blue Ribbon Panelist

Super Lawyers and Rising Stars Nominations Lists

September 2025

Blue Ribbon Panelist for the 2023-2025 Southern California Super Lawyers and Rising Stars Nominations Lists

Leading Individual, Litigation: Securities in California

Chambers USA

January 2024

Leading Individual, Litigation: Securities in California, Chambers USA, 2021-2024

Leaders of Influence: Litigators & Trial Lawyers

Los Angeles Business Journal

January 2024

Leaders of Influence: Litigators & Trial Lawyers, Los Angeles Business Journal, 2019-2024

Publications & speeches

Takeaways From SEC's Aggressive Cybersecurity Moves

Law360

February 2024

Co-authored, (Top 10 Most Read Expert Analyses)

Link

My Advice to a Young Lawyer: Never Miss a Beat

Los Angeles Business Journal

May 2022

I’m a securities litigation lawyer by day and – if I say so myself – a “hidden gem” of a drummer by night, still waiting for my band’s big break. In between playing sets with my bands through the years, I’ve learned how to embrace the rhythm of the business of law and play to my strengths.

Link

Short Sale Verdict Shows Need For Better Portfolio Disclosure

Law360

December 2021

Link

Navigating SPAC Risks During Heightened SEC Scrutiny

Los Angeles Business Journal

November 2021

Over the last twelve months, the U.S. Securities and Exchange Commission (SEC) has bolstered oversight of special purpose acquisition companies (SPACs) in response to shareholder allegations of fraud, conflicts of interest, and inadequate disclosures relating to de-SPAC M & A transactions.

Link

SEC Rattles SPAC Market With Novel Enforcement Action

Bloomber Law

August 2021

The SEC for the first time announced aggressive enforcement actions against a SPAC, it’s sponsor and CEO, the target company, and the target company’s CEO—all before shareholders of the target company voted on the merger. Baker McKenzie attorneys look at the far-reaching impact of the SEC’s actions and offer thoughts on steps to avoid similar regulatory scrutiny.

Link

Office Snapshot: Baker McKenzie's Growing LA Outpost

Law 360

June 2022

Interviewed

Link

Activist investors are hunting targets in the SPAC market, but battles won’t be easy to win

CNBC.com

April 2022

The once red-hot SPAC market is becoming a fertile ground for activist investors who push for changes at problematic companies and profit from them. A record number of companies went public over the past two years by merging with special purpose acquisition companies, a fast-track IPO alternative vehicle. New to the public markets and often underperforming, industry experts believe these companies could increasingly become vulnerable to activist involvement.

Link

5 Things You Need To Become a Top Lawyer In Your Specific Field of Law

Authority Magazine

January 2022

Interviewed

Link

Mini-Roundtable US Securities Class Actions

Corporate Disputes Financier Worldwide, Ltd.

September 2019

Interviewed

SPACs with Perrie Weiner, Partner in Charge, Baker McKenzie's LA Office,

ValueWalk's ValueTalks

Guest speaker

Link

The Rock 'n Rollin' Lawyer who Runs Baker McKenzie's LA Office

Latte with a Lawyer

June 2021

Guest speaker