secwatch.observer — SEC 8-K summary
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Issuer:     Interactive Brokers Group, Inc. (IBKR)
CIK:        0001381197
Form:       8-K
Filed at:   2026-07-31T17:02:54+00:00
Accession:  0001381197-26-000130
Event type: other_material
Sentiment:  neutral
Materiality: 0.40
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Interactive Brokers files prospectus supplement to sell 2,499,567 shares of common stock
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- Company filed a Prospectus Supplement under Rule 424(b)(5) to take down 2,499,567 shares off its shelf registration.
- Shares are offered under Registration Statement No. 333-297857 filed July 31, 2026.
- Legal opinion of Dechert LLP regarding share validity filed as Exhibit 5.2.
- No offering price or use of proceeds disclosed in the 8-K.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1381197/000138119726000130/0001381197-26-000130-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1381197/000138119726000130/ibkr-20260731.htm
  HTML page:      https://secwatch.observer/filing/0001381197-26-000130

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