SEC Form 4 · accession 0001567619-18-003030

Interactive Brokers Group, Inc. · IBKR

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Milan Galik

Officer — President · Director

Period of report

Sep 20, 2017

Accepted (ET)

Sep 21, 2018 · 4:29 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001381197

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Class A common stock^F1,F3,F2	Sep 20, 2017	P	578	$43.32	A	850,329	D
Class A common stock^F1,F4,F2	Dec 15, 2017	P	415	$60.40	A	850,744	D
Class A common stock^F1,F5,F2	Mar 15, 2018	P	348	$72.29	A	926,466	D
Class A common stock^F1,F6,F2,F8	Jun 15, 2018	P	360	$69.96	A	860,566	D
Class A common stock^F1,F7,F2	Sep 17, 2018	P	427	$59.01	A	860,993	D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1These shares were purchased on behalf of the reporting person through a dividend reinvestment program, in which the reporting person is a participant. These shares were inadvertently excluded from Form 4 reporting.
F2This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) the cumulative shares purchased through the dividend investment program.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.22 to $43.50, inclusive. The reporting person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (3) - (7) to this Form 4.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.26 to $60.50, inclusive.
F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $72.02 to $72.44, inclusive.
F6The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.73 to $70.13, inclusive.
F7The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.00 to $59.05, inclusive.
F8The decrease in securities beneficially owned gives effect to the shares that were withheld for tax purposes related to the May 9, 2018 vesting of restricted stock units awarded under the Plan. This withholding transaction was reported on Form 4, filed with the Securities Exchange Commission on May 22, 2018.

Remarks

This Form 4 is filed to report shares purchased through a dividend reinvestment program, in which the reporting person is a participant, on September 20, 2017, December 15, 2017, March 15, 2018, June 15, 2018 and September 17, 2018, that were inadvertently excluded from Form 4 reporting. Subsequently filed Form 4s through May 22, 2018 are hereby amended to reflect the number of shares beneficially owned at the end of the period reported on such form (which are shown in column 5) by the shares shown to be purchased in this report on September 20, 2017, December 15, 2017, March 15, 2018, June 15, 2018 and September 17, 2018.