A partner in the Litigation Department, Walter Rieman focuses his practice on civil litigation arising from securities-related disputes, other commercial disputes, and disputes concerning governmental regulation. His practice has recently included a range of matters related to disclosure and fraud-related issues, fiduciary duties, mergers, corporate governance, commercial contracts, and federal and state regulatory issues. He has argued appeals before the Second, Seventh, and Ninth Circuits, before New York’s Appellate Division, and before the New York Court of Appeals.
Walter has litigated many individual, derivative, and class
actions raising securities-related claims under federal and state
law. He has also litigated many other commercial disputes,
including contract-based claims, product liability claims, and
other tort claims. He has frequently participated in litigating
challenges to class certification, including constitutionally based
challenges, and other challenges by defendants to various forms of
consolidated or mass actions. In addition to his work on private
litigations, Walter's experience as a business litigator has
included the representation of defendants in actions brought by
regulators before federal and state courts and administrative
agencies, including the United States Securities and Exchange
Commission. Walter has represented both private clients and
governmental entities in a number of matters concerning statutory
or constitutional constraints on governmental regulation. Walter
also has extensive experience involving distressed sovereign
Walter recently briefed and argued appeals in Janes
v. Triborough Bridge & Tunnel Authority, No.
13‑4377, 2014 WL 7331578 (2d Cir. Dec. 24, 2014)
(affirming summary judgment dismissing claims against our client
the Metropolitan Transportation Authority alleging that certain
tolls violated the Commerce Clause and other provisions of the U.S.
Constitution), aff'g 977 F. Supp. 2d 320 (S.D.N.Y. 2013)
(decision granting summary judgment, which Walter also briefed and
argued); St. Stephen's School v.
PricewaterhouseCoopers Accountants N.V., 570 F. App'x
37 (2d Cir. 2014) (vacating and remanding class certification order
in securities-related action against our clients The Citco Group
Limited and affiliates); NML Capital, Ltd. v.
Republic of Argentina, 952 N.E.2d 482 (N.Y. 2011)
(awarding substantial additional interest to our clients on their
holdings of defaulted sovereign debt); Assured Guar. (U.K.)
Ltd. v. J.P. Morgan Inv. Mgmt,. 962 N.E.2d 765 (N.Y.
2012); Kagan v. HMC-N.Y., Inc., 100 A.D.3d 468
(1st Dep't 2012); and Kagan v. HMC-N.Y.,
Inc., 94 A.D.3d 67 (1st Dep't), appeal dismissed, 973 N.E.2d
182 (N.Y. 2012). He briefed and argued the appeal in AHW
Investment Partnership v. Citigroup Inc.,
No. 13‑4488 (2d Cir.); we are awaiting the Second Circuit's
decision. In that securities-related action, he obtained a judgment
from the district court dismissing so-called "holder" claims
against our client. See 980 F. Supp. 2d 510 (S.D.N.Y.
2013). He is a principal author of other recent appellate briefs,
including briefs filed in the Supreme Court of the United