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Between September 1 and December 18, 2025, the European Parliament recorded 22,158 lobbyist entries, with private interests accounting for 59% of these visits. The report highlights a disproportionate presence of US-based lobbyists and fossil fuel interests, who were present 87.5% of the time during the studied period. This influence was particularly concentrated around the negotiation of the Omnibus I law, which modified the Corporate Sustainability Due Diligence Directive (CSDDD) and the Corporate Sustainability Reporting Directive (CSRD). The analysis reveals that fossil fuel lobbyists often entered the Parliament without declared appointments to engage in informal interactions. A case study of ExxonMobil demonstrates a complex lobbying chain involving direct visits, professional consultancies, and trade associations, totaling over 650 entries in four months to push for the removal of climate transition plans.