Amal SHETIWY, and other similarly situated, Louis C. Yeostros, and other similarly situated, John Murphy, and other similarly situated, Plamen Pankoft, and other similarly situated, Patricia R. Diffley, Spiros Argyros, Johanna Arbelaez, Nicholas Doudalis, Nicole Gagnon, and other similarly situated, Safet Koljenovic, Magdi Abdalla, Ahmed Hassan, Ekatereine Skotedis, and other similarly situated, Vielka Vargas, and other similarly situated, Rose Villaneuva, and other similarly situated, Plaintiffs-Appellants, v. MIDLAND CREDIT MANAGEMENT, AKA Midland Funding LLC, Cavalry Portfolio Services LLC, DebtOne, LLC, CACH, LLC, LVNV Funding, LLC, Asset Acceptance LLC, FIA Card Services, N.A., Chase Bank USA N.A., American Express Company, Bank of America, N.A., Capital One Financial Advisors LLC, ARS National Services Inc., CitiGroup Inc., Citibank, N.A., GE Capital Consumer Lending, Inc., Equable Assent Financial, LLC, Capital One Financial Corporation, Cavalry SPV I, LLC, Portfolio Recovery Associates, LLC, AKA Portfolio Recovery, Defendants-Appellees, NCO Financial Systems, Incorporated, Capital Management Services, Defendants, 706 F. App'x 30

SUMMARY ORDER Plaintiff-Appellants (“Plaintiffs”) appeal the District Court’s order of dismissal with prejudice pursuant to Federal Rules of Civil Procedure 16(

f) and 41(b). In this case, Plaintiffs make no arguments concerning the District Court’s final order in their principal brief. An appellant is deemed to have waived arguable claims on an issue that is not argued in his or her principal brief. See, e.g., Gross v. Rell, 585 F.3d 72, 95 (2d Cir. 2009). Accordingly, the District Court’s order of July 25, 2016 is affirmed. CONCLUSION We AFFIRM the District Court’s order of July 25,2016.