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| Jul. 25, 2018 | Albert Kim, VP and Associate General Counsel, Chicago Stock Exchange, Inc. |
| Mar. 29, 2018 | James G. Ongena, Executive Vice President and General Counsel, Chicago Stock Exchange, Inc. |
| Feb. 27, 2018 | Recommendation of the Investor Advocate, U.S. Securities and Exchange Commission |
| Jan. 24, 2018 | James G. Ongena, Executive Vice President and General Counsel, Chicago Stock Exchange, Inc. |
| Dec. 8, 2017 | Stephen Berger, Managing Director, Government and Regulatory Polic, Citadel Securities |
| Dec. 8, 2017 | James G. Ongena, Executive Vice President and General Counsel, Chicago Stock Exchange, Inc. |
| Dec. 8, 2017 | Public Directors of the Chicago Stock Exchange Inc. |
| Dec. 7, 2017 | Joanna Mallers, FIA Principal Traders Group |
| Oct. 18, 2017 | Albert J. Kim, Vice President and Associate General Counsel, Chicago Stock Exchange, Inc. |
| Oct. 7, 2017 | R.T. Leuchtkafer |
| Sep. 19, 2017 | Albert J. Kim, Vice President and Associate General Counsel, Chicago Stock Exchange, Inc. |
| Jul. 10, 2017 | R.T. Leuchtkafer |
| Jul. 7, 2017 | R.T. Leuchtkafer |
| Jun. 30, 2017 | James G. Ongena, Executive Vice President, General Counsel, Chicago Stock Exchange, Inc. |
| Jun. 16, 2017 | Joanna Mallers, Secretary, FIA Principal Traders Group |
| Jun. 16, 2017 | Stephen Berger, Managing Director, Government and Regulatory Policy, Citadel Securities |
| Jun. 15, 2017 | R. T. Leuchtkafer |
| May 17, 2017 | Theodore R. Lazo, Managing Director and Associate General Counsel, SIFMA |
| Apr. 4, 2017 | Steve Crutchfield, Head of Market Structure, CTC Trading Group, LLC |
| Mar. 24, 2017 | James G. Ongena, Executive Vice President, General Counsel, Chicago Stock Exchange, Inc. |
| Mar. 20, 2017 | Elizabeth K. King, General Counsel and Corporate Secretary, New York Stock Exchange |
| Mar. 17, 2017 | Tyler Gellasch, Executive Director, Healthy Markets Association |
| Mar. 14, 2017 | Stephen John Berger,
Managing Director, Government & Regulatory Policy, Citadel Securities |
| Mar. 14, 2017 | R. T. Leuchtkafer |
| Mar. 13, 2017 | Adam Nunes, Head of Business Development, Hudson River Trading LLC |
| Mar. 13, 2017 | Joanna Mallers, Secretary, FIA Principal Traders Group |
| Feb. 27, 2017 | Douglas A. Cifu, Chief Executive Officer, Virtu Financial |
| Feb. 24, 2017 | Ryan Hitch, Head of Equities Trading, XR Securities LLC |
