Interactive Brokers Group, Inc. — Director's Dealing 2026

Jan 7, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Interactive Brokers Group, Inc. (IBKR)
CIK: 0001381197
Period of Report: 2025-12-31

Reporting Person: Frank Thomas AJ (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-31	Class A common stock	A	13944	—	Acquired	283248	Direct

Footnotes

F1: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2026 and 20% on each of the first four anniversaries of 5/9/2026.

F2: On June 17, 2025, the issuer effected a four-for-one split of its common stock, resulting in the Reporting Person's indirect ownership of 201,978 additional shares of common stock.

F3: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan.