Client Reported $ Filings Share
MERCK & CO INC $8.35M 3

4 of 7 lobbyists (57%) listed a prior covered government position on a lobbying filing.

CHARLES CLAPTON
Chief Health Counsel, House Energy & Commerce Cmte; Chief Health Counsel, House Ways & Means Cmte; Policy Advisor, Rep. Hastert; Health Policy Dir., Senate H...
STEPHANIE MCBATH
Sr. Legis. Asst., Rep. Newhouse; Legis. Asst., Aug., Rep. Newhouse; Legis. Asst./Press Asst., Rep. Stefanik; Intern, Rep. Stefanik.
BRADLEY ROSSIN
Field Representative, Rep. Brian Bilbray; Senior Health Representative, Rep. Brian Bilbray
ELIZABETH SCHWARTZ
Legislative Assistant to Sen. Ron H. Johnson 07/2011-06/2014; Senate HELP Committee 06/2014-04/2018

7 reports on file for 2025 (latest version of each); 5 reported no contributions.

Itemized by year

Largest recipients, 2025

Posted Period Client Type Income Expenses Activities Lobbyists
2026-07-20 2026 Q2 MERCK & CO INC 2nd Quarter - Report — $2.27M 4 6
2026-04-20 2026 Q1 MERCK & CO INC 1st Quarter - Report — $4.15M 4 6
2026-01-20 2025 Q4 MERCK & CO INC 4th Quarter - Report — $1.93M 4 5
2025-10-20 2025 Q2 MERCK & CO INC 2nd Quarter - Amendment — $4.99M 4 6
2025-10-20 2025 Q3 MERCK & CO INC 3rd Quarter - Report — $1.52M 4 5
2025-07-21 2025 Q2 MERCK & CO INC 2nd Quarter - Report — $4.98M 4 6
2025-04-21 2024 Q4 MERCK & CO INC 4th Quarter - Amendment — $1.8M 3 5
2025-04-21 2025 Q1 MERCK & CO INC 1st Quarter - Report — $2.6M 4 6
2025-01-21 2024 Q4 MERCK & CO INC 4th Quarter - Report — $1.73M 3 5
2024-10-21 2024 Q3 MERCK & CO INC 3rd Quarter - Report — $2.19M 3 5
  • CHARLES CLAPTON · prior govt
  • ERIN DARLING
  • STEPHANIE MCBATH · prior govt
  • THOMAS RADDER
  • BRADLEY ROSSIN · prior govt
  • ELIZABETH SCHWARTZ · prior govt
  • BRADFORD TALLAMY

Source: LDA.gov, data retrieved November 10, 2026. FilingExplorer is not affiliated with LDA.gov; the Senate Office of Public Records cannot vouch for data or analyses derived from these records after retrieval.