Douglas P. Baumstein
Member / Co-chair, Securities Litigation Practice
+1.212.692.6734
"Douglas is an amazing litigator. He knows his stuff and presents well. He is very dedicated to the client, responsive and he cares. He listens, gives you the time you need to explain the issues, details and concerns, and he acts on it."
— Chambers USA
Doug is a first-chair litigator with significant experience representing clients in securities, corporate governance, complex commercial, and bankruptcy-related litigation. Described in Chambers USA as being “a clear, creative and strategic thinker and a strong, persuasive writer,” Doug has a strong track record of achieving favorable outcomes for clients before federal and state courts across the United States, including New York, Delaware, Maryland, Nevada, Texas, New Jersey, and Massachusetts.
Doug has successfully represented numerous high-profile clients in securities law cases. He obtained dismissal in full and appellate affirmation of securities law claims against ReWalk Robotics, a medical device company. He has also obtained dismissals for global clinical stage biopharmaceutical company DBV Technologies; Argentinian cement manufacturer Loma Negra; and Aixtron SE, the German technology company. He argued successfully in the Southern District of New York, and on appeal before the Second Circuit Court of Appeals, for a dismissal of all securities law claims against Dynegy officers and directors arising out of actions they took to restructure that energy company. Doug also led the representation of Aracruz (now Fibria Celulose) in its successful resolution of claims arising out of losses it suffered in connection with its purchases of foreign exchange derivatives. Continuing his work in the life sciences industry, Doug has considerable experience representing clients in both the branded and nonbranded space.
He has represented such companies as Advance Auto Parts, Teligent, Royal Ahold, Presstek, Pitney Bowes, Talbots, Ormat Technologies, and Cnova in securities class actions, in addition to defending clients in ERISA class actions and class actions alleging breach of contract and RICO violations. Doug is recognized by Chambers and Partners for Securities Litigation. The Legal 500 describes him as a “top-notch partner” and notes that he has extensive trial experience before US federal and state courts. He is also recognized as a “Future Star” by Benchmark Litigation.
In addition to his securities work, Doug has extensive experience defending officers and directors in breach of fiduciary duty, control disputes, and other corporate governance matters, including securing dismissals of derivative claims and prevailing in high-stakes litigation before the Delaware Court of Chancery, the Delaware Supreme Court, and federal bankruptcy courts.
Doug’s practice also focuses on complex commercial disputes. Both US-based and international clients benefit from his deep US litigation experience. For example, he represented US Foods in a long-running class action challenging pricing practices within the foodservice industry. He has litigated bankruptcy-related cases on behalf of creditors, debtors and equity holders, including with respect to the restructuring of the following companies: Delphi, Delta, Adelphia, Lehman Brothers, General Maritime, Primorsk International Shipping, SunEdison, Pacific Drilling, Houston Regional Sports Network, and M&G Chemicals.
Prior to joining Mintz, Doug was a partner at a New York–based international law firm.
"Douglas is an amazing litigator. He knows his stuff and presents well. He is very dedicated to the client, responsive and he cares. He listens, gives you the time you need to explain the issues, details and concerns, and he acts on it."
— Chambers USA
Experience
Representative Securities Litigation Matters
- One of the lead attorneys for Royal Ahold and certain affiliates in Royal Ahold Securities and ERISA litigations in one of the largest multidistrict litigation class action securities fraud/ERISA cases ever filed in the state of Maryland, involving billions of dollars.
- Represented medical device company, ReWalk Robotics in parallel putative class actions in state and federal court in Massachusetts asserting violations of the federal securities laws. Doug obtained dismissal of all claims in both courts and successfully argued for affirmance of the federal court dismissal before the First Circuit Court of Appeals.
- Secured a motion to dismiss with prejudice on behalf of DBV Technologies in a securities class action filed in the US District court for New Jersey, alleging the company made false or misleading statements and failed to disclose sufficient manufacturing data on their key therapeutic treatment.
- Represented Ormat Technologies, a leading geothermal company, in a securities class action and associated derivative actions in the District of Nevada. The case was settled favorably for the client.
- Represented Advance Auto Parts in a securities class action in the District of Delaware and successfully obtained dismissal of a related derivative action against its board of directors and certain senior executives.
- Represented Teligent Inc. in a securities class action in the Southern District of New York and related stockholder derivative litigation in multiple courts.
- Represented Aixtron SE, a German-based technology company, in a putative securities class action filed in the US District Court for the Southern District of New York. The complaint alleged that the company made misrepresentations and material omissions in press releases and SEC filings regarding the status of a large order of one of its products by a large Chinese customer that was eventually reduced substantially, resulting in a decline in the company's stock price. Doug obtained a dismissal of all claims against Aixtron.
- Represented certain Dynegy officers and directors in a securities litigation concerning statements made in connection with Dynegy’s restructuring efforts. Obtained a complete dismissal of all claims.
- Represented Talbots and certain of its officers and directors in obtaining a complete dismissal of all claims alleged in a putative class action securities litigation.
- Represented US Foods in In re USF Pricing Litigation, a multidistrict class action in federal court in Connecticut involving challenges to industry-wide pricing practices and alleged RICO violations.
- Represented Fibria Celulose in a putative class action litigation alleging securities violations arising out of losses Fibria incurred with respect to its foreign exchange derivative portfolio.
Representative Complex Commercial Litigation Matters
- Advised Stop & Shop Supermarket Company in a long-running dispute with Vornado Realty Trust that involved multiple hearings and a two-week bench trial.
- Secured summary judgment in Delaware Chancery Court reinstating the founder and CEO of a leading health care finance company as manager in a high-stakes governance dispute; obtained affirmance of the Chancery Court ruling by the Delaware Supreme Court within 24 hours of argument.
Representative Bankruptcy & Restructuring Matters
- After a multiday trial, successfully obtained an order of foreclosure on behalf of senior secured lenders with respect to oil tankers in the Winland Ocean Shipping bankruptcy.
- Represented a former Lehman Brothers Inc. employee in a multiday trial and on appeal in connection with a dispute as to unpaid bonus payment.
- Successfully represented Dynegy Holdings in Delaware Chancery Court concerning a challenged corporate reorganization.
- Advised JPMorgan Chase in a litigation concerning the allocation of tax benefits resulting from the plan of reorganization of an insolvent California insurer.
- Conducted a two-week trial on behalf of the junior secured noteholders of Residential Capital concerning issues as to the value of the noteholders’ security interests.
- Represented major shareholders in Delphi’s bankruptcy and was successful in obtaining an order for the formation of an equity committee over the objections of the debtors, the creditors committee, the lenders, and the US Trustee. Also represented the defendants in a highly publicized, cutting-edge action seeking to compel specific performance of a $2.5 billion equity investment in Delphi and asserting numerous other tort, contract, and statutory claims.
- Prevailed at trial in imposing an involuntary bankruptcy on a major real estate developer to sell the Flatotel in New York City, resulting in a leading published decision.
- Conducted a weeklong trial in connection with the motion of the senior secured lenders of an international shipping company to convert a Chapter 11 case to Chapter 7.
viewpoints
Minimizing Stockholder Litigation Risks
February 18, 2022 | Blog
In 2021, approximately on quarter of all federal securities fraud class action lawsuits filed nationwide were against life sciences companies and their officers and directors. These considerations are for directors and officers of life sciences companies looking to manage disclosures and mitigate risk before a suit ever gets filed.
Environmental Disclosures: Considerations for Board Members
September 17, 2021 | Blog | By Jacob Hupart, Megan Gates, Jonathan L. Kravetz , Doug Baumstein
News & Press
Mintz Earns Firm Rankings and 23 Individual Recognitions in 2027 Benchmark Litigation Guide
October 28, 2026
Benchmark Litigation has recognized 23 Mintz attorneys in its 2026 guide to the leading litigation firms and lawyers in the United States. Mintz was also named Highly Recommended in Massachusetts and earned rankings in the Commercial, Insurance, and White Collar Crime categories.
Getty Images to Merge with Shutterstock
January 16, 2025|
How Project 2025 Could Upend Federal ESG Policies
October 17, 2024|
Emerging Trends In ESG-Focused Securities Litigation
June 18, 2024|
Mintz Appoints Doug Baumstein as Securities Litigation Co-chair
November 14, 2023|
OpEd: Navigating Fiduciary Duties Amid The Rise Of Anti-ESG Rulemaking
February 14, 2023|
High Court Ruling On Direct Listing Appeal Could Be Pivotal
December 22, 2022|
'Caremark' Liability Following The SEC's New ESG Reporting Requirements
December 15, 2022|
Benchmark Litigation Recognizes 13 Mintz Attorneys As 2023 Litigation Stars
September 29, 2022|
Mintz Welcomes 21 Lateral Members in 2020
December 29, 2020|
Mintz Continues Litigation Expansion with Addition of Douglas Baumstein
October 26, 2020|
podcasts
SPAC Chat Ep. 4: Litigation Update: Preparing for the Next Wave of Suits Against SPACs
April 27, 2021 | Podcast | By Jeffrey Schultz, Sahir Surmeli
Events & Speaking
Navigating Fiduciary Duties amidst the Rise of Anti-ESG Rulemaking
Navigating Fiduciary Duties amidst the Rise of Anti-ESG Rulemaking
Webinar
Growth Through M&A: The New Rules of Engagement for the Board
ACCD Directors Forum 2023
Ponte Vedra Inn & Club, FL
The Rise of Special Purpose Acquisition Companies (SPACs): How to Minimize Securities Litigation Risks
Knowledge Webcasts
Webinar
Publications
- Co-author, Greenwashing Trends and Risks, LexisNexis Practical Guidance, (February 2025)
"Douglas is an amazing litigator. He knows his stuff and presents well. He is very dedicated to the client, responsive and he cares. He listens, gives you the time you need to explain the issues, details and concerns, and he acts on it."
— Chambers USA
Recognition & Awards
Chambers USA: New York: Litigation: Securities (2025 – 2026)
Legal 500 United States: Top-Notch Partner (2018)
Legal 500: Recommended for Securities Litigation (2017, 2025)
Benchmark Litigation: Future Star (2017 – 2020, 2023 – 2027)
Legal 500: Recommended Lawyer – Securities Litigation: Defense (2026)
"Douglas is an amazing litigator. He knows his stuff and presents well. He is very dedicated to the client, responsive and he cares. He listens, gives you the time you need to explain the issues, details and concerns, and he acts on it."
— Chambers USA
Involvement
- Committee Member, New York City Bar Association's Bankruptcy and Corporate Reorganization Committee
