Corporate environmental claims frequently appear in news articles, providing an external view of sustainability-related communications. However, extracting such claims remains challenging as they are often implicit, distributed across multiple sentences, and embedded within narrative contexts. In this work, we propose an end-to-end system for automated environmental claim extraction enriched with contextual metadata. Our pipeline combines multi-label topic classification, topic-conditioned candidate claim-evidence extraction using large language models (LLMs), and candidate filtering with ASE-BERT, a lightweight aspect- and sentiment-aware classifier for claim detection. To support evaluation, we construct a curated dataset of corporate environmental news, annotated with claims, supporting evidence, and contextual attributes. Experimental results demonstrate that for claim classification, ASE-BERT attains the highest F1 (0.87) across the four combined environmental claim datasets, exceeding the best baseline without task-specific fine-tuning by 4 points. For end-to-end extraction, topic conditioning alone improves LLM F1 by an average of 15 points, and our full pipeline adds a further 5 points over the best topic-conditioned setting. These findings demonstrate that incorporating topic awareness and claim filtering substantially improves environmental claim extraction from corporate news, supporting downstream sustainability intelligence and decision-making tasks.

Corporate sustainability reports communicate environmental disclosures through text, tables, charts, and infographics, making assessment against sustainability reporting standards challenging. Existing disclosure extraction systems focus on information extraction but do not determine whether disclosed evidence satisfies reporting requirements. We study requirement-level multimodal environmental disclosure alignment, a task that evaluates whether sustainability report evidence satisfies GRI 305 and ESRS E1-4 and E1-6 requirements. To support this task, we curate an expert-annotated benchmark comprising 731 disclosure-alignment instances from 43 sustainability reports. Using this benchmark, we evaluate three Vision Language Models (VLMs): GPT-5.5, Gemini, and LLaMA Maverick under three conditioning strategies: open-ended, framework-specific, and knowledge-augmented. Results show that although frontier VLMs possess substantial implicit knowledge of sustainability reporting standards, they frequently produce over generalized and optimistic alignment judgments. Requirement level grounding improves alignment accuracy by 12% and yields more accurate disclosure gap identification. Our findings demonstrate the value of knowledge grounded multimodal reasoning for scalable, interpretable, and auditable sustainability disclosure assessment.