All lobbying filings

Rivendell Group LLP

Rivendell Group LLP filed a registration for Mayer Brown LLP on Behalf of 21ST Century Privacy Colalition on April 24, 2026.

Lobbying for Mayer Brown LLP on Behalf of 21ST Century Privacy Colalition · Federal Advocacy

As filed: RIVENDELL GROUP LLP for MAYER BROWN LLP ON BEHALF OF 21ST CENTURY PRIVACY COLALITION.

All filings by Rivendell Group LLP · Everything Mayer Brown LLP on Behalf of 21ST Century Privacy Colalition has reported

Filing · LD-1 registration Registration

Reporting period

1st Quarter 2026

Jan 1 - Mar 31 · Posted Apr 24, 2026

Money reported

None

Registrations and no-activity reports carry no figure.

Client based in

District of Columbia

Official filing document

Lobbyists on this filing 2

NICK KOLOVOS New on this filing

Previously held: LA and Counsel, Rep. Anna Eshoo
MATTHEW LAWRENCE BERZOK New on this filing

Previously held: LD and Chief Counsel, Rep. Bart Stupak, Rep. Peter Deutsch

A "covered position" is a government job the lobbyist held in the 20 years before registering, which the law requires them to name. See the revolving door for former members of Congress across all filings.

Lobbying activity 1

Consumer Issues/Safety/Products

Issues and legislation relating to privacy, kids/teen privacy, and data security.

Source: federal Lobbying Disclosure Act filing, reproduced as filed. Bills are parsed from the activity descriptions.