Lori Conkling (IBKR) adds 25 Class A shares at $79.64 in open-market buy

Rhea-AI Filing Summary

Interactive Brokers Group, Inc. director Lori A. Conkling made an open-market purchase of 25 shares of Class A common stock at $79.64 per share. Following this transaction, she holds a total of 2,459 shares, including vested and unvested restricted stock units awarded under the company’s 2007 Stock Incentive Plan.

Insider Trade Summary 10b5-1

Net Buyer: 25 shares ($1,991)

Net Buy 1 txn

Insider Conkling Lori A

Role null

Bought 25 shs ($2K)

Type	Security	Shares	Price	Value
Purchase	Class A common stock	25	$79.64	$2K

Holdings After Transaction: Class A common stock — 2,459 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares purchased: 25 shares Purchase price: $79.64 per share Shares owned after: 2,459 shares +1 more

4 metrics

Shares purchased 25 shares Open-market buy of Class A common stock

Purchase price $79.64 per share Price paid for Class A common stock

Shares owned after 2,459 shares Total holdings after purchase

Net shares bought 25 shares Net buy direction in this filing

Key Terms

Class A common stock, open-market purchase, restricted stock units, 2007 Stock Incentive Plan

4 terms

Class A common stock financial

"security_title: "Class A common stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

open-market purchase financial

"transaction_action: "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

restricted stock units financial

"Class A common stock attributable to vested restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2007 Stock Incentive Plan financial

"awarded under the 2007 Stock Incentive Plan as amended"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Conkling Lori A

(Last) (First) (Middle)

ONE PICKWICK PLAZA

(Street)

GREENWICH CONNECTICUT 06830

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Interactive Brokers Group, Inc. [ IBKR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A common stock	05/01/2026		P		25	A	$79.64	2,459(1)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This amount includes (a) securities acquired by the Reporting Person; (b) Class A common stock attributable to vested restricted stock units that were awarded under the 2007 Stock Incentive Plan as amended ("Plan"); and (c) unvested restricted stock units that were awarded under the Plan.

	/s/ Matthew Kelly as authorized signatory for Lori A Conkling	05/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did IBKR director Lori A. Conkling report?

Lori A. Conkling reported an open-market purchase of 25 shares of Interactive Brokers Group Class A common stock. The transaction was recorded as a purchase at $79.64 per share, increasing her directly held and incentive-related share position.

At what price did Lori A. Conkling buy IBKR Class A common stock?

She bought the Class A common stock at $79.64 per share in an open-market purchase. This specific per-share price is disclosed in the Form 4 transaction data for the May 1, 2026 trade.

How many IBKR shares does Lori A. Conkling hold after this transaction?

After the transaction, Lori A. Conkling holds 2,459 shares of Interactive Brokers Group Class A common stock. This amount includes directly acquired shares as well as vested and unvested restricted stock units awarded under the 2007 Stock Incentive Plan.

What type of security did Lori A. Conkling purchase in this IBKR Form 4?

She purchased Interactive Brokers Group Class A common stock. The filing specifies this as a non-derivative security, reflecting a straightforward equity position rather than options or other derivative instruments linked to the company’s stock.

How does the Form 4 describe Lori A. Conkling’s IBKR transaction?

The Form 4 describes the transaction as an open-market purchase coded as a “P” transaction. It is categorized as a non-derivative acquisition of 25 shares of Class A common stock, with ownership reported as direct following completion.