X0306 4 2012-08-08 0 0001060749 KNIGHT CAPITAL GROUP, INC. KCG 0001453624 GETCO Holding Co. 350 N. ORLEANS STREET, 3RD FL SOUTH CHICAGO IL 60654 0 0 1 0 0001544652 GETCO Strategic Investments, LLC 350 N. ORLEANS STREET CHICAGO IL 60654 0 0 1 0 Class A Common Stock 2012-08-08 4 P 0 53448 3.16 A 53511 I Held by Subsidiary Class A Common Stock 2012-08-08 4 S 0 52444 3.18 D 1067 I Held by Subsidiary The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $3.10 to $3.19, inclusive. The reporting person undertakes to provide to Knight Capital Group, Inc., any security holder of Knight Capital Group, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased and sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.12 to $3.20, inclusive. The Reporting Persons disclaim beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein and this report shall not be deemed an admission that any such Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. /s/ Alex Sadowski, Authorized Signatory 2012-08-10 /s/ Alex Sadowski, Authorized Signatory 2012-08-10