secwatch.observer — SEC 8-K summary ====================================== Issuer: Interactive Brokers Group, Inc. (IBKR) CIK: 0001381197 Form: 8-K Filed at: 2025-07-30T23:59:59+00:00 Accession: 0001381197-25-000086 Event type: other_material Sentiment: neutral Materiality: 0.55 Item codes: 8.01 LLM model: deepseek-v4-flash:cloud@v2 Interactive Brokers takes down 3.8M common shares from shelf registration ------------------------------------------------------------------------- - 3,836,000 shares of common stock taken down under July 2023 shelf registration statement (333-273451). - Prospectus supplement filed July 30, 2025, under Rule 424(b)(5). - Dechert LLP legal opinion on share validity filed as Exhibit 5.5. - Use of proceeds not disclosed in the 8-K. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1381197/000138119725000086/0001381197-25-000086-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1381197/000138119725000086/ibkr-20250730x8k.htm HTML page: https://secwatch.observer/filing/0001381197-25-000086 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer