HUDSON TECHNOLOGIES

• SQUIRE PATTON BOGGS $430,000 Outside firm · 8 filings
• INVARIANT LLC $420,000 Outside firm · 7 filings
• ALCALDE & FAY $0 Outside firm · 6 filings

Spend per registrant: fees an outside firm reported, or the costs the client reported for lobbying in-house. The rows add up to the total above.

• 2026 $340,000 8 filings
• 2025 $510,000 13 filings

• Environment/Superfund 13
• Budget/Appropriations 5
• Defense 2
• Trade (domestic/foreign) 1

The count is how many filings named that issue area. A filing reports one lump figure covering every issue on it, so the money above cannot be split between them.

• HOUSE OF REPRESENTATIVES 13
• SENATE 10
• Environmental Protection Agency (EPA) 7
• White House Office 4
• General Services Administration (GSA) 3
• Defense, Dept of (DOD) 2
• Executive Office of the President (EOP) 2
• Office of Management & Budget (OMB) 2
• Small Business Administration (SBA) 2
• State, Dept of (DOS) 1