This book is the official, syllabus-aligned NISM workbook (March 2026, Taxmann) for the NISM-Series-III-A certification, written for compliance officers and staff at SEBI-registered non-fund intermediaries. Across two parts and 23 chapters, it moves from India's financial structure to the full body of SEBI law—the SEBI Act, SCRA/SCRR, PMLA, Insider Trading and FUTP rules, and intermediary-specific frameworks for stock brokers, depository participants, merchant bankers, debenture trustees, credit rating agencies and more. Its practitioner focus ties each rule to its statutory sections, Code of Conduct, compliance-officer duties and penalties, illustrated with real SEBI enforcement case studies. Updated for the latest 2025 regulations and contemporary themes (ODR, cyber resilience, AI & ML, ESG ratings), every chapter opens with learning objectives and closes with practice MCQs. The result works as both an exam-prep text and an on-the-job desk reference.