Interactive Brokers Group announced on July 25, 2024, that it has filed a Prospectus Supplement under Rule 424(b)(5) to issue 333,000 shares of common stock from its existing shelf Registration Statement (No. 333-273451), which was originally filed with the SEC on July 26, 2023.The company has obtained a legal opinion letter from Dechert LLP validating the shares' legitimacy. This legal opinion has been filed as Exhibit 5.4 to the Current Report on Form 8-K and has been incorporated into the Registration Statement as well.

Interactive Brokers Group announced on July 25, 2024, that it has filed a Prospectus Supplement under Rule 424(b)(5) to issue 333,000 shares of common stock from its existing shelf Registration Statement (No. 333-273451), which was originally filed with the SEC on July 26, 2023.The company has obtained a legal opinion letter from Dechert LLP validating the shares' legitimacy. This legal opinion has been filed as Exhibit 5.4 to the Current Report on Form 8-K and has been incorporated into the Registration Statement as well.