Sergei Lemberg, Esq.

Managing Attorney Lemberg Law

Sergei Lemberg founded the firm to champion the rights of consumers and hold corporations accountable.


Sergei Lemberg, the firm’s founding attorney, has earned a reputation as a tough and tireless advocate with a passion for helping consumers fight for the compensation they deserve. He stands up to car makers, insurance companies, debt collection agencies, robocallers, and other players in Big Business. He has been recognized as the “most active consumer attorney” four of the last seven years.

Mr. Lemberg has been interviewed about consumer law issues by many media outlets, including the New York Times, AOL, the Wall Street Journal, FOX News, ABC News, MSN, the International Business Times, the Los Angeles Times, Newsweek, and Consumer Reports. He frequently speaks at industry events, including those held by PACE (Professional Association for Customer Engagement). He is also a sought-after presenter at events such as the National Conference on Consumer Finance (Class Actions and Litigation).

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From humble beginnings

Mr. Lemberg arrived to the United States as a refugee from the former Soviet Union in 1989 at the age of 15. He attended Brooks School in North Andover, Massachusetts, on scholarship, then continued on to college at Brandeis University, where he earned a B.A. in Economics with a minor in Business in 1997. He obtained his law degree from the University of Pennsylvania Law School in 2001. After several years working at large firms in Boston, New York, and Connecticut, Mr. Lemberg launched Lemberg Law.

He started the firm in a one-room office 14 years ago and has grown it into a leading national consumer law firm with more than 30 employees.

Notable cases

In early 2018, the firm garnered national attention for filing the first-in-the-nation lawsuit against the manufacturer of a self-driving car.

Mr. Lemberg has been lead counsel in a number of consumer class actions. Most recently, the firm was certified as class counsel in LaVigne v. First Community Bancshares, Inc., et al. , No. 1:2015 cv 00934 in the District of New Mexico, and has received preliminary approval of class settlement in Ward v. Flagship Credit Acceptance, Case 2:17-cv-02069-MMB in the Eastern District of Pennsylvania.

Mr. Lemberg served as co-lead counsel in the Telephone Consumer Protection Act (TCPA) multi-district litigation In Re: Convergent Telephone Consumer Protection Act Litigation, No. 13-md-02478 (D. Conn., November 10, 2016) (ECF No. 268), in U.S. District Court, District of Connecticut, which resulted in a $5.5 million class settlement. He has been certified as class counsel in both contested proceedings and in settlement, including Munday v. Navy Federal Credit Union, No. 15-cv-01629 (C.D. Cal., July 14, 2017) (ECF No. 60) (TCPA class settlement of $2.75 million); Duchene v. Westlake Services., LLC, No. 13-01577, 2016 WL 6916734 (W.D. Pa. July 14, 2016) (TCPA class settlement of a $10 million); Brown v. Rita’s Water Ice Franchise Co. LLC, No. 15-3509, 2017 WL 1021025 (E.D. Pa. Mar. 16, 2017) (TCPA class settlement of a $3 million); Vinas v. Credit Bureau of Napa County Inc., No. 14-cv-3270 (D. Md. February 22, 2017) (ECF No. 112) ($300,000 FDCPA settlement); Oberther v. Midland Credit Management, No. 14-cv-30014 (D. Mass. July 13, 2016) (ECF No. 90) (FDCPA class action); Seekamp v. It’s Huge, Inc., No. 09-00018, 2012 WL 860364 (N.D.N.Y. Mar. 13, 2012) (automobile fraud class action); Evon v. Law Offices of Sidney Mickell, 688 F.3d 1015 (9th Cir. 2012) (FDCPA class action); Butto v. Collecto, Inc., 290 F.R.D. 372 (E.D.N.Y. 2013) (FDCPA class action); and In re Chemtura, Bankr., S.D.N.Y. 09-11233 (representation of nearly 1,000 former Chemtura employees).

Mr. Lemberg is an experienced appellate advocate, having argued in the First, Second, Third, Fourth, Fifth, Seventh, and Ninth Circuit Courts of Appeal, as well as in the Massachusetts Supreme Court. His most recent appellate victories include Evon v. Law Offices of Sidney Mickell, 688 F.3d 1015 (9th Cir. 2012); Waite v. Clark Cty. Collection Serv., LLC, 606 F. App’x 864 (9th Cir. 2015); Scott v. Westlake Servs. LLC, 740 F.3d 1124 (7th Cir. 2014); Pollard v. Law Office of Mandy L. Spaulding, 766 F.3d 98 (1st Cir. 2014); Armata v. Target Corp., 480 Mass. 14, 99 N.E.3d 788 (2018); and Manuel v. NRA Grp. LLC, 722 F. App’x 141 (3d Cir. 2018).

Mr. Lemberg co-authored the definitive compilation of form complaints in Connecticut, Connecticut Civil Complaints for Business Litigation, contributing form complaints for the Lemon Law and Auto Fraud sections. He is a former Chair of the Consumer Law Section of the Connecticut Bar Association, holding that position from 2014 to 2015.

Personal interests

Outside of practicing law, Mr. Lemberg is the proud father of two boys. He loves the Red Sox, coaching soccer, gardening, and pickling vegetables.