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  1. Professionals

Jeffrey L. Steinfeld

Partner

Los Angeles

+1 213-615-1960

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  • Overview
  • Experience
  • Credentials
  • Insights & News

Recognized by Chambers and hailed by The Legal 500 as “a legal rock star,” Jeffrey is an accomplished trial lawyer practicing at the cutting edge of securities litigation, shareholder and derivative actions, and white collar and U.S. Securities and Exchange Commission (SEC) enforcement defense. According to The Legal 500, Jeff is “sought out by clients for his know-how in criminal insider trading and securities fraud” cases and “provides keen problem-solving advice in high pressure situations.” Jeff has successfully represented clients in civil and criminal actions at both the trial and appellate levels, including successfully litigating multiple months-long federal jury trials and arguing in the Delaware Court of Chancery. He has been recognized multiple times in AmLaw’s Litigator of the Week, quoted as a “securities expert,” and published or appeared in publications such as Law360, Bloomberg, and The National Law Journal. He has been honored by ALM’s California Legal Awards (“Lawyers on the Fast Track”) and numerous legal directories including The Legal 500 US (for securities litigation and corporate investigations / white-collar criminal defense), Chambers (securities litigation); Lawdragon (securities litigation), Benchmark Litigation (40 & Under List), Best Lawyers (commercial litigation), and Super Lawyers (securities litigation). 

Jeff is a seasoned trial lawyer whose practice focuses on securities litigation, white collar criminal defense and SEC enforcement actions, regulatory and internal investigations, fraud, fiduciary duties of corporate officers and directors, derivative and mergers and acquisitions (M&A) litigation, stockholder demands, and other class action defense. He has extensive experience defending criminal and civil insider trading and securities fraud actions, as well as shareholder class actions. Jeff also provides advice on business combinations including M&A, financing, de-SPAC transactions, and related litigation.

Jeff is a first-chair trial attorney with extensive experience in federal and state courts, including the Delaware Court of Chancery. He has led a federal trial to jury verdict and completed multiple other months-long securities fraud jury trials that resulted in dismissals against his client. He also litigates appellate issues in federal and state court. Jeff has represented clients in a wide variety of matters and industries including financial technology (fintech), cryptocurrency, blockchain and other digital assets, broker/dealers, medical devices, eye care, energy, aerospace, biotech, telecommunications, commercial and investment banking, private equity and other investment funds, cybersecurity, real estate, lending, and special purpose acquisition companies (SPACs).

Described as a “securities expert,” Jeff is a thought leader in the space. He has been published in leading legal news outlets such as Law360 and Bloomberg, featured across media outlets including The National Law Journal, Private Equity Law Report, and the International Financing Review, and was retained to speak on the SPAC Panel at the MedTech Innovation Forum alongside industry leaders such as the former Chairmen & CEOs of Allergan and Medtronic, amongst others. Jeff also emerged as a thought leader in digital asset litigation, serving on panels for the Association of Business Trial Lawyers (ABTL) and the Blockchain Law for Social Good Conference, as well as giving webinars on the rapidly evolving area of the law.

Jeff is an active member of the Central District of California’s Pro Bono Panel and has also acted as a moot court oral argument and brief judge for Berkeley Law’s McBaine Honors Moot Court Competition. The Legal 500 has recognized Jeff as a “Key Attorney” in Corporate Investigations and White-Collar Criminal Defense.  Jeff was recognized in the inaugural 2021 publication of Best Lawyers®: Ones to Watch in America, as well as the 2022 and 2023 editions. Super Lawyers has recognized Jeff as a litigation “Rising Star,” and Chambers USA has recognized him as an “Up and Coming Practitioner.”

 

Key Matters

Some of the experience represented below may have been handled at a previous firm.

Securities, M&A, and Corporate Governance Litigation and Advisory Work

  • Successfully represented the former CEO of Matterport, Inc. in obtaining a unanimous victory before the Delaware Supreme Court, affirming a near $80 million judgment awarded as a result of improper trading restrictions the company placed on his stock. Not only did the Delaware Supreme Court reject the company’s efforts to vacate the judgment, but it also granted the former CEO’s cross-appeal on post-judgment interest, finding that the Court of Chancery erred in using a lower interest rate in effect during the liability phase of the case, rather than the higher interest rate in effect when damages were awarded. 2025 WL 1166116. For the win, Jeff was featured in The American Lawyer’s Litigation Daily’s Litigator of the Week column on April 25, 2025.
  • Representing Caitlyn Jenner and her manager in a securities fraud class action filed in the Central District of California stemming for the $Jenner memecoins. The case alleges violations of the Securities Act (§12 & §15), the Exchange Act (§10(b) and Rule 10b-5), California statutory securities claims, common law fraud, and controller and aiding and abetting claims.
  • Defending a major cryptocurrency and digital asset exchange in a securities and consumer protection class action alleging violations of the Securities Act, the Exchange Act, state blue sky laws, and California’s unfair competition laws.
  • Defended Cantor Fitzgerald, L.P., Cantor Fitzgerald & Co., and various officers and directors in a securities class action filed in the Northern District of California alleging violations of Sections 11, 12, and 15 of the Securities Act, and Sections 10(b), 14(a), and 20 of the Exchange Act, related to the US$1.6B SPAC merger between a Cantor sponsored SPAC and View, Inc., arising from a financial restatement and audit committee investigation. Jeff led two rounds of motion to dismiss briefing and argument—including an over four hour long oral argument—after which the Court dismissed all claims with prejudice while addressing numerous securities issues regarding affirmative defenses, Section 12 statutory sellers, standing, and loss causation. See Mehedi v. View, Inc., 2023 WL 3592098 (N.D. Cal. May 22, 2023) and Mehedi v. View, Inc., 2024 WL 1560009 (N.D. Cal. Apr. 9, 2024). For the win, Jeff was featured in The American Lawyer's Litigation Daily’s Litigator of the Week column on April 12, 2024.
  • Defended Pendrell Corporation and various officers and directors in securities and stockholder class actions filed in the Northern District of California and Delaware Court of Chancery challenging a US$2.1B special purpose acquisition company (SPAC) merger between Holicity, Inc. and Astra Space, Inc., alleging federal securities violations and breach of fiduciary duty and disclosure claims, respectively. The matters were successfully resolved, including dismissal with prejudice of the securities action at the pleading stage. A follow-on derivative suit was also dismissed.
  • Defended the former executives of a de-SPAC public company in a Multiplan style stockholder class action filed in the Delaware Court of Chancery brought against executives of the target company alleging aiding and abetting breach of fiduciary duty and disclosure claims. Jeff successfully obtained dismissal of the lawsuit for the company’s former president; a rare pleading stage win in such cases.
  • Successfully defended Semiconductor Manufacturing International Corporation (SMIC) – China’s largest chipmaker – and Semiconductor Manufacturing South China Corporation (SMSC), in a federal action alleging fraud and breach of contract among other claims. The case against both entities was dismissed as a result of successful motions to dismiss.
  • Representing Fathom Digital Manufacturing Corporation in an action related to its US$1.5B go-public de-SPAC transaction against a private investment in public equity (PIPE) investor that failed to fund its investment pursuant to a subscription agreement
  • Defended the chief revenue officer and former interim CEO and director of Momentus, Inc. in a securities class action filed in the Central District of California, alleging violations of Sections 10(b) and 20 of the Exchange Act and Rule 10b-5 promulgated thereunder.
  • Represented the board of directors of a public company in investigating, evaluating, and responding to shareholder litigation demands related to alleged misstatements in connection with financial reporting and restatements thereof.
  • Defended Barclays Capital Inc., Merrill Lynch, J.P. Morgan, Citigroup, and UBS Securities, Wells Fargo and other financial institutions in a securities class action brought in state court alleging violation of Section 11 and Section 12 of the Securities Act.
  • Represented the Special Committee of the Board of Directors of Caesars Acquisition Company (CAC) in potential litigation regarding a US$2B asset purchase and subsequent US$3.2B merger between CAC and Caesars Entertainment Corporation.
  • Defended an executive vice president and general counsel of a large-format retail store chain and finance company in a breach of fiduciary duty action, successfully litigating multiple anti-SLAPP motions and a demurrer, resulting in the court dismissing the case with prejudice and awarding over US$200,000 in attorney’s fees.
  • Represented the audit committee of a publicly traded biotechnology company in an internal investigation related to anti-touting and anti-fraud provisions of the federal securities laws including Sections 17(a) and 17(b) of the Securities Act and Section 10(b) of the Exchange Act.
  • Advising public and private companies, including SPACs, and their officers and directors with respect to issues of fiduciary duties, securities laws, and business combinations and related litigation.
  • Advising companies, trade organizations, and individuals regarding digital assets, blockchain, and cryptocurrency-related issues including private securities actions and civil and criminal enforcement proceedings.

White Collar Defense and SEC Enforcement Actions

  • Defended the CEO of a publicly traded corporation in parallel criminal and U.S. Securities and Exchange Commission (SEC) enforcement actions alleging insider trading (Section 10(b) of the Exchange Act and Rule 10b-5 promulgated thereunder), tender offer fraud (Section 14(e) and Rule 14e-3), and securities fraud (18 U.S.C. § 1348). Jeff and team twice successfully tried the criminal action to jury verdict (10-week and 6-week trials) resulting in complete dismissal of all charges against the client, and the reversal of three convictions of a co-defendant.
  • Successfully obtained compassionate release under 18 U.S.C. § 3582(C)(1)(A) for Paul Paradis, an executive and former attorney that contracted with the Los Angeles Department of Water and Power and worked under the supervision of the City Attorney’s Office. After two months of hard-fought motion practice including strenuous objections by the government, the court granted the motion, resulting in Mr. Paradis immediate release from incarceration after serving only approximately 1/3 of his sentence.
  • Co-led representation of The Chamber of Digital Commerce as amicus curiae in Securities and Exchange Commission v. Wahi et al., Case No. 22-CV-01009-TL (W.D. Wash. 2022).
  • Defended an executive in an SEC enforcement action alleging securities and tender offer fraud including under Rules 10b-5 and 14e-3 of the Exchange Act. Jeff led the executive’s defense including filing a summary judgment motion that resulted in the most favorable settlement out of numerous defendants.
  • Currently leading the defense of the largest criminal prosecution ever brought by the Tulare County District Attorney’s Office, alleging misappropriation of government funds (PC § 424), grand theft (PC § 514), conspiracy (PC § 182), money laundering (PC § 186.10), criminal conflicts of interest (GC § 1090) and other purported violations of the California Government Code. The investigation was conducted in conjunction with the California Department of Justice, the Attorney General’s Office, and FBI. Jeff led a day long demurrer argument, which resulted in the District Attorney having to amend the operative complaint. Jeff also led additional substantive briefing and argument against the Attorney General of California.
  • Co-led representation of Valhil Capital, LLC as amicus curiae in Securities and Exchange Commission v. Ripple Labs Inc. et al., Case No. 1:20-CV-10832-AT-SN (S.D.N.Y. 2020), in support of defendants’ motion for summary judgment.
  • Represented the audit committee of a publicly traded biotechnology company in responding to an SEC investigation related to anti-touting and anti-fraud provisions of the federal securities laws including Sections 17(a) and 17(b) of the Securities Act and Section 10(b) of the Exchange Act.
  • Leading the representation of a former executive in the U.S. Department of Justice’s investigation into corruption, bribery, and fraud at the Los Angeles Department of Water and Power (DWP) and the Los Angeles City Attorney’s Office.
  • Representing a complainant and witness in an investigation conducted by the State Bar of California into numerous attorneys regarding potential violations of the California Business & Professions Code and the California Rules of Professional Conduct related to, among other things, the Los Angeles City Attorney’s Office and the DWP.
  • Represented a clothing company and its CEO in an investigation brought by the United States Attorney’s Office alleging importation and tax fraud, money laundering, and criminal forfeiture, including causes of action under 18 U.S.C. § § 541, 543, 545, 18 U.S.C. §§ 981, 982, and 18 U.S.C. § 1956.
  • Leading the defense of a relief defendant in an SEC enforcement action alleging a Ponzi scheme of at least US$33M.
  • Represented investment fund and its founder in government investigation related to pre-initial public offering (pre-IPO) funds and the marketing thereof.
  • Responding to subpoenas issued by various governmental agencies on the state and federal level including the Department of Justice and SEC on behalf of entities and individuals.
  • Conducting internal investigations and advising clients on potential exposure as a result government investigations and subpoenas.

Appellate Litigation

  • Successfully represented the former CEO of Matterport, Inc. in the Delaware Supreme Court, obtaining a unanimous affirmance of a near $80 million judgment awarded as a result of improper trading restrictions the company placed on his stock. The Court also granted our cross appeal with respect to the calculation of post-judgment interest.  See Matterport v. Brown, 2025 WL 1166116 (Del. Apr. 22, 2025).
  • Represented LaSalle Bank, N.A. (now Bank of America) in successfully affirming the dismissal of five related class actions that alleged the lender aided and abetted a fraudulent real estate investment scheme.
  • Leading interlocutory appeal in the Ninth Circuit regarding the interplay of Article III standing and loss causation under the Exchange Act. 
  • Representing former CEO of publicly traded company in a Delaware Supreme Court appeal with over $100M in controversy. 
  • Represented the CEO of a public company in a Ninth Circuit appeal of a successful motion in limine in a criminal insider trading and securities fraud matter.
  • Represented corporate executive and successfully argued appeal of order dismissing cause of actions against the executive alleging breach of fiduciary duty.
  • Represented attorney and law firm clients in a successful petition for writ of mandate in the California Court of Appeal, successfully protecting the clients’ attorney work product from disclosure.

Other Representations

  • Lead counsel to an indigent plaintiff in a federal Section 1983 jury trial alleging an illegal search and seizure, in which Jeff briefed and argued a successful pre-trial motion that allowed the admission of evidence regarding punitive damages and a jury instruction thereto.
  • Representing a partner of a major law firm in a malpractice action.
  • Represented a well-known Los Angeles private elementary school in a potential trademark and copyright infringement matter, successfully protecting the client’s mark.
Recent Experience
TradeStation Announces Business Combination with Quantum FinTech

  • The American Lawyer, Litigators of the Week, April 25, 2025
  • Chambers USA, “Up and Coming Practitioner,” Litigation: Securities, 2024
  • Lawdragon, “500 X, The Next Generation,” Securities Litigation, 2024
  • ALM’s California Legal Awards, “Lawyers on the Fast Track,” 2025
  • The American Lawyer, Litigators of the Week, April 12, 2024
  • Legal 500 US, “Key Lawyer,” for Corporate Investigations and White-Collar Criminal Defense, 2023, and for Dispute Resolution: Securities Litigation: Defense, 2024
  • Benchmark Litigation US, “40 & Under” List, Dispute Resolution, 2024–2025
  • Best Lawyers®: Ones to Watch in America,Commercial Litigation, 2021–2023
  • Super Lawyers, “Rising Star,” Securities Litigation, 2022

  • Central District Pro Bono Panel
  • American Bar Association
  • Los Angeles County Bar Association
  • Berkeley Law, McBaine Honors Moot Court Oral Argument and Brief Judge

Capabilities

Securities, M&A & Corporate Governance Litigation
Government Investigations, Enforcement & Compliance
Commercial Litigation & Disputes
Corporate Governance
Mergers & Acquisitions
Class Actions & Group Litigation
Financial Services
Cryptocurrencies, Digital Assets & Blockchain Technology
Technology, Media & Telecommunications
Professional Services
Medical Devices
Energy

Key Matters

Some of the experience represented below may have been handled at a previous firm.

Securities, M&A, and Corporate Governance Litigation and Advisory Work

  • Successfully represented the former CEO of Matterport, Inc. in obtaining a unanimous victory before the Delaware Supreme Court, affirming a near $80 million judgment awarded as a result of improper trading restrictions the company placed on his stock. Not only did the Delaware Supreme Court reject the company’s efforts to vacate the judgment, but it also granted the former CEO’s cross-appeal on post-judgment interest, finding that the Court of Chancery erred in using a lower interest rate in effect during the liability phase of the case, rather than the higher interest rate in effect when damages were awarded. 2025 WL 1166116. For the win, Jeff was featured in The American Lawyer’s Litigation Daily’s Litigator of the Week column on April 25, 2025.
  • Representing Caitlyn Jenner and her manager in a securities fraud class action filed in the Central District of California stemming for the $Jenner memecoins. The case alleges violations of the Securities Act (§12 & §15), the Exchange Act (§10(b) and Rule 10b-5), California statutory securities claims, common law fraud, and controller and aiding and abetting claims.
  • Defending a major cryptocurrency and digital asset exchange in a securities and consumer protection class action alleging violations of the Securities Act, the Exchange Act, state blue sky laws, and California’s unfair competition laws.
  • Defended Cantor Fitzgerald, L.P., Cantor Fitzgerald & Co., and various officers and directors in a securities class action filed in the Northern District of California alleging violations of Sections 11, 12, and 15 of the Securities Act, and Sections 10(b), 14(a), and 20 of the Exchange Act, related to the US$1.6B SPAC merger between a Cantor sponsored SPAC and View, Inc., arising from a financial restatement and audit committee investigation. Jeff led two rounds of motion to dismiss briefing and argument—including an over four hour long oral argument—after which the Court dismissed all claims with prejudice while addressing numerous securities issues regarding affirmative defenses, Section 12 statutory sellers, standing, and loss causation. See Mehedi v. View, Inc., 2023 WL 3592098 (N.D. Cal. May 22, 2023) and Mehedi v. View, Inc., 2024 WL 1560009 (N.D. Cal. Apr. 9, 2024). For the win, Jeff was featured in The American Lawyer's Litigation Daily’s Litigator of the Week column on April 12, 2024.
  • Defended Pendrell Corporation and various officers and directors in securities and stockholder class actions filed in the Northern District of California and Delaware Court of Chancery challenging a US$2.1B special purpose acquisition company (SPAC) merger between Holicity, Inc. and Astra Space, Inc., alleging federal securities violations and breach of fiduciary duty and disclosure claims, respectively. The matters were successfully resolved, including dismissal with prejudice of the securities action at the pleading stage. A follow-on derivative suit was also dismissed.
  • Defended the former executives of a de-SPAC public company in a Multiplan style stockholder class action filed in the Delaware Court of Chancery brought against executives of the target company alleging aiding and abetting breach of fiduciary duty and disclosure claims. Jeff successfully obtained dismissal of the lawsuit for the company’s former president; a rare pleading stage win in such cases.
  • Successfully defended Semiconductor Manufacturing International Corporation (SMIC) – China’s largest chipmaker – and Semiconductor Manufacturing South China Corporation (SMSC), in a federal action alleging fraud and breach of contract among other claims. The case against both entities was dismissed as a result of successful motions to dismiss.
  • Representing Fathom Digital Manufacturing Corporation in an action related to its US$1.5B go-public de-SPAC transaction against a private investment in public equity (PIPE) investor that failed to fund its investment pursuant to a subscription agreement
  • Defended the chief revenue officer and former interim CEO and director of Momentus, Inc. in a securities class action filed in the Central District of California, alleging violations of Sections 10(b) and 20 of the Exchange Act and Rule 10b-5 promulgated thereunder.
  • Represented the board of directors of a public company in investigating, evaluating, and responding to shareholder litigation demands related to alleged misstatements in connection with financial reporting and restatements thereof.
  • Defended Barclays Capital Inc., Merrill Lynch, J.P. Morgan, Citigroup, and UBS Securities, Wells Fargo and other financial institutions in a securities class action brought in state court alleging violation of Section 11 and Section 12 of the Securities Act.
  • Represented the Special Committee of the Board of Directors of Caesars Acquisition Company (CAC) in potential litigation regarding a US$2B asset purchase and subsequent US$3.2B merger between CAC and Caesars Entertainment Corporation.
  • Defended an executive vice president and general counsel of a large-format retail store chain and finance company in a breach of fiduciary duty action, successfully litigating multiple anti-SLAPP motions and a demurrer, resulting in the court dismissing the case with prejudice and awarding over US$200,000 in attorney’s fees.
  • Represented the audit committee of a publicly traded biotechnology company in an internal investigation related to anti-touting and anti-fraud provisions of the federal securities laws including Sections 17(a) and 17(b) of the Securities Act and Section 10(b) of the Exchange Act.
  • Advising public and private companies, including SPACs, and their officers and directors with respect to issues of fiduciary duties, securities laws, and business combinations and related litigation.
  • Advising companies, trade organizations, and individuals regarding digital assets, blockchain, and cryptocurrency-related issues including private securities actions and civil and criminal enforcement proceedings.

White Collar Defense and SEC Enforcement Actions

  • Defended the CEO of a publicly traded corporation in parallel criminal and U.S. Securities and Exchange Commission (SEC) enforcement actions alleging insider trading (Section 10(b) of the Exchange Act and Rule 10b-5 promulgated thereunder), tender offer fraud (Section 14(e) and Rule 14e-3), and securities fraud (18 U.S.C. § 1348). Jeff and team twice successfully tried the criminal action to jury verdict (10-week and 6-week trials) resulting in complete dismissal of all charges against the client, and the reversal of three convictions of a co-defendant.
  • Successfully obtained compassionate release under 18 U.S.C. § 3582(C)(1)(A) for Paul Paradis, an executive and former attorney that contracted with the Los Angeles Department of Water and Power and worked under the supervision of the City Attorney’s Office. After two months of hard-fought motion practice including strenuous objections by the government, the court granted the motion, resulting in Mr. Paradis immediate release from incarceration after serving only approximately 1/3 of his sentence.
  • Co-led representation of The Chamber of Digital Commerce as amicus curiae in Securities and Exchange Commission v. Wahi et al., Case No. 22-CV-01009-TL (W.D. Wash. 2022).
  • Defended an executive in an SEC enforcement action alleging securities and tender offer fraud including under Rules 10b-5 and 14e-3 of the Exchange Act. Jeff led the executive’s defense including filing a summary judgment motion that resulted in the most favorable settlement out of numerous defendants.
  • Currently leading the defense of the largest criminal prosecution ever brought by the Tulare County District Attorney’s Office, alleging misappropriation of government funds (PC § 424), grand theft (PC § 514), conspiracy (PC § 182), money laundering (PC § 186.10), criminal conflicts of interest (GC § 1090) and other purported violations of the California Government Code. The investigation was conducted in conjunction with the California Department of Justice, the Attorney General’s Office, and FBI. Jeff led a day long demurrer argument, which resulted in the District Attorney having to amend the operative complaint. Jeff also led additional substantive briefing and argument against the Attorney General of California.
  • Co-led representation of Valhil Capital, LLC as amicus curiae in Securities and Exchange Commission v. Ripple Labs Inc. et al., Case No. 1:20-CV-10832-AT-SN (S.D.N.Y. 2020), in support of defendants’ motion for summary judgment.
  • Represented the audit committee of a publicly traded biotechnology company in responding to an SEC investigation related to anti-touting and anti-fraud provisions of the federal securities laws including Sections 17(a) and 17(b) of the Securities Act and Section 10(b) of the Exchange Act.
  • Leading the representation of a former executive in the U.S. Department of Justice’s investigation into corruption, bribery, and fraud at the Los Angeles Department of Water and Power (DWP) and the Los Angeles City Attorney’s Office.
  • Representing a complainant and witness in an investigation conducted by the State Bar of California into numerous attorneys regarding potential violations of the California Business & Professions Code and the California Rules of Professional Conduct related to, among other things, the Los Angeles City Attorney’s Office and the DWP.
  • Represented a clothing company and its CEO in an investigation brought by the United States Attorney’s Office alleging importation and tax fraud, money laundering, and criminal forfeiture, including causes of action under 18 U.S.C. § § 541, 543, 545, 18 U.S.C. §§ 981, 982, and 18 U.S.C. § 1956.
  • Leading the defense of a relief defendant in an SEC enforcement action alleging a Ponzi scheme of at least US$33M.
  • Represented investment fund and its founder in government investigation related to pre-initial public offering (pre-IPO) funds and the marketing thereof.
  • Responding to subpoenas issued by various governmental agencies on the state and federal level including the Department of Justice and SEC on behalf of entities and individuals.
  • Conducting internal investigations and advising clients on potential exposure as a result government investigations and subpoenas.

Appellate Litigation

  • Successfully represented the former CEO of Matterport, Inc. in the Delaware Supreme Court, obtaining a unanimous affirmance of a near $80 million judgment awarded as a result of improper trading restrictions the company placed on his stock. The Court also granted our cross appeal with respect to the calculation of post-judgment interest.  See Matterport v. Brown, 2025 WL 1166116 (Del. Apr. 22, 2025).
  • Represented LaSalle Bank, N.A. (now Bank of America) in successfully affirming the dismissal of five related class actions that alleged the lender aided and abetted a fraudulent real estate investment scheme.
  • Leading interlocutory appeal in the Ninth Circuit regarding the interplay of Article III standing and loss causation under the Exchange Act. 
  • Representing former CEO of publicly traded company in a Delaware Supreme Court appeal with over $100M in controversy. 
  • Represented the CEO of a public company in a Ninth Circuit appeal of a successful motion in limine in a criminal insider trading and securities fraud matter.
  • Represented corporate executive and successfully argued appeal of order dismissing cause of actions against the executive alleging breach of fiduciary duty.
  • Represented attorney and law firm clients in a successful petition for writ of mandate in the California Court of Appeal, successfully protecting the clients’ attorney work product from disclosure.

Other Representations

  • Lead counsel to an indigent plaintiff in a federal Section 1983 jury trial alleging an illegal search and seizure, in which Jeff briefed and argued a successful pre-trial motion that allowed the admission of evidence regarding punitive damages and a jury instruction thereto.
  • Representing a partner of a major law firm in a malpractice action.
  • Represented a well-known Los Angeles private elementary school in a potential trademark and copyright infringement matter, successfully protecting the client’s mark.
Recent Experience
TradeStation Announces Business Combination with Quantum FinTech

Credentials

Education

Jeffrey received his J.D. from the University of California, Berkeley in 2013, was elected to the Order of the Coif, and won the 2013 McBaine Honors Moot Court Competition. He received his B.B.A. in finance, investments, and banking from the University of Wisconsin in 2008. 

    Admissions
    • California

    Related Insights & News

    Publications

    • Justices’ Labcorp Questions Explore Class Cert. Tensions, Law360, May 8, 2025, also available here
    • Recent Insider Trading Conviction Demonstrates The Government’s Focus On Rule 10b5-1 Trading Plans, Capital Markets & Securities Law Watch, Aug. 1, 2024
    • SEC’s New SPAC Rules Broaden Liability and Weaken Safe Harbors, Bloomberg Law, Author, July 16, 2024
    • SCOTUS Limits the SEC’s Ability To Use In-House Tribunals To Seek Civil Penalties For Securities Fraud, Stripping the Agency of One of Its Many Enforcement Tools, Capital Markets and Securities Law Watch, June 28, 2024
    • "Circuit Split Brews Over Who's A Securities Seller Under Act," Law360, Author,  April 29, 2024, also available here
    • “High Court’s Slack Decision Signals Section 11 Liability Limits,” Bloomberg Law, Author, July 12, 2023
    • “Lane Narrows for Wire and Honest Services Fraud Prosecutions,” Bloomberg Law, Author, May 19, 2023
    • “Justices’ Analysis of Securities Law Surprises in Slack v. Pirani,” Bloomberg Law, Author, April 20, 2023
    • “What The Justices Are Thinking About In FTC And SEC Cases,” Law360, Nov. 9, 2022
    • "The Eleventh Circuit Holds That the Class Definition in a Settlement Agreement Must Be Limited to Class Members With Article III Standing," Class Action Insider, Aug. 19, 2022
    • “SEC Proposes Sweeping New Regulations of SPAC Transactions,” Capital Markets & Securities Law Watch, Co-author, April 4, 2022
    • “Delaware Court of Chancery Applies Entire Fairness to De-SPAC Transaction in First Major Decision Involving SPAC Litigation,” Capital Markets & Securities Law Watch, Author, Feb. 4, 2022
    • “Recent Lawsuits Challenging SPACs Under the ICA Miss the Mark,” Capital Markets & Securities Law Watch, Author, Aug. 26, 2021
    • “How SPACs Should Respond To Increasing Scrutiny,” Law360, Author, June 22, 2021
    • “Supreme Court to Decide Whether the PSLRA’s Discovery Stay Applies to State Court Actions,” Capital Markets & Securities Law Watch, Author, July 7, 2021
    • “SEC Charges SPAC, Sponsor, Target, and CEOs for Alleged Misleading Disclosures in Connection with Proposed De-SPAC Transaction” Capital Markets and Securities Watch, Author, July 15, 2021
    • Contributing Author, Winston & Strawn Class Action Insider

    Media Commentary

    • Supreme Court: In Bifurcated Case, Interest Rate at Time of Second Decision Prevails, Delaware Business Court Insider (Law.com), April 25, 2025
    • Disbarred Attorney Granted Compassionate Release, Daily Journal, Jan.16, 2025, also available here
    • “Fact or Opinion? 2nd Circuit Raises Bar for Investor Fraud Suits,” The National Law Journal, Jan. 4, 2024
    • “Instagram Promoters Test Limits of 90-Year-Old Securities Law,” Bloomberg Law, Oct. 20, 2023
    • “Securities Experts React To The High Court's SEC Decision,” Law360, April 14, 2023, also available here
    • “Derivative Lawsuit Challenges SPAC Model and Causes Pershing Square to Pivot to New “SPARC” Vehicle,” Private Equity Law Report, Sept. 21, 2021
    • “ Law Firms Respond En Masse To SPAC Litigation,” International Financing Review, Aug. 27, 2021
    • “Blank-Check Companies Under Fire In US,” Het Financieele Dagblad (The Financial Daily Newspaper), Aug. 1, 2021 (Translated from Dutch)

    Speaking Engagements

    • Public Company Priorities Seminar, Panelist, Sept. 26, 2024 
    • “Chain Reaction: A Trial Lawyer’s Guide to Blockchain and Cryptocurrencies” Association of Business Trial Lawyers, Panelist, March 15, 2023
    • “Blockchain Litigation Update, Blockchain Law for Social Good Conference” Panelist, Oct. 20, 2022
    • “Digital Asset Exchanges and the Clash of Class Action Lawsuits, Webinar and CLE Presentation, Presenter, Aug. 17, 2022
    • “SPAC Panel, 2021 MedTech Innovation Forum,” Speaker, Oct. 28, 2021
    • “SPAC Litigation,” Webinar and Continuing Legal Education (CLE) Presentation, Presenter, July 21, 2021
    • “2019 Central District of California Pro Bono Panel,” Speaker, June 2019
    Recognitions
    Winston Team Led by Jeffrey Steinfeld Featured in Litigator of the Week

    May 16, 2025

    Article
    Justices' Labcorp Questions Explore Class Cert. Tensions

    May 8, 2025

    Recognitions
    Winston Team Featured in Litigator of the Week Column

    April 25, 2025

    Recognitions
    Winston Partners Honored During the 2025 California Legal Awards

    April 23, 2025

    In the Media

    Jeffrey Steinfeld Discusses Compassionate Release Win for Client Paul Paradis with the Daily Journal

    January 22, 2025

    Recognitions
    Winston & Strawn Wins Three 2024 Law360 Practice Group of the Year Awards

    January 20, 2025

    Recognitions

    Winston & Strawn Recognized in 2025 Benchmark Litigation

    October 3, 2024

    Seminar/CLE
    Public Company Priorities Breakfast or Lunch Program

    September 26, 2024

    Recognitions
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