# EDGAR Filing Document

**Accession Number:** 0001381197
**File Stem:** 0001140361-23-010699
**Filing Date:** 2023-3
**Character Count:** 2021
**Document Hash:** cbd0de5586bccc6f97306761ce72c99e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-23-010699.hdr.sgml**: 20230308

**ACCESSION NUMBER**: 0001140361-23-010699

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230308

**DATE AS OF CHANGE**: 20230308

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Interactive Brokers Group, Inc.
- **CENTRAL INDEX KEY:** 0001381197
- **STANDARD INDUSTRIAL CLASSIFICATION:** SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
- **IRS NUMBER:** 300390693
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-33440
- **FILM NUMBER:** 23716644

**BUSINESS ADDRESS:**
- **STREET 1:** ONE PICKWICK PLAZA
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830
- **BUSINESS PHONE:** 203-618-5800

**MAIL ADDRESS:**
- **STREET 1:** ONE PICKWICK PLAZA
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830

#### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, DC 20549

#### <br>

### SCHEDULE 14A

#### <br>
Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

(Amendment No.)

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

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| |
|:---|
| **INTERACTIVE BROKERS GROUP, INC.** |
| (Name of Registrant as Specified in Its Charter) |
| (Name of Person(s) Filing Proxy Statement, if other than the Registrant) |

---

Payment of Filing Fee (Check the appropriate box):

☒ No fee required. <br> ☐ Fee paid previously with preliminary materials. <br> ☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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