secwatch.observer — SEC 8-K summary
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Issuer:     Interactive Brokers Group, Inc. (IBKR)
CIK:        0001381197
Form:       8-K
Filed at:   2026-07-31T17:14:26+00:00
Accession:  0001381197-26-000135
Event type: other_material
Sentiment:  neutral
Materiality: 0.50
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Interactive Brokers registers 920,000 shares for potential sale via shelf
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- Filed prospectus supplement to register up to 920,000 shares of common stock under existing shelf registration.
- Shares registered under Rule 424(b)(5); legal opinion from Dechert LLP included as exhibit.
- No details on whether shares are for company or selling shareholders; offering terms not disclosed.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1381197/000138119726000135/0001381197-26-000135-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1381197/000138119726000135/ibkr-20260731.htm
  HTML page:      https://secwatch.observer/filing/0001381197-26-000135

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