Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, par value $0.01 per share^{F2,F1,F4,F11,F12}	Jul 1, 2014	J	541,306	$51.975	D	2,031,717	I	Held through Hercules Holding II, LLC and KKR PEI Investments, L.P.
Common Stock, par value $0.01 per share^{F3,F1,F5,F11,F12,F13}	May 10, 2016	S	3,730,122	$80.12	D	2,337,018	I	Held through Hercules Holding II, LLC and KKR Millennium Fund L.P.
Common Stock, par value $0.01 per share^{F3,F1,F6,F11,F12,F13}	May 10, 2016	S	3,461,161	$80.12	D	2,168,506	I	Held through Hercules Holding II, LLC and KKR 2006 Fund L.P.
Common Stock, par value $0.01 per share^{F3,F1,F4,F11,F12,F13}	May 10, 2016	S	1,249,115	$80.12	D	782,602	I	Held through Hercules Holding II, LLC and KKR PEI Investments, L.P.
Common Stock, par value $0.01 per share^{F3,F1,F7,F12,F13}	May 10, 2016	S	127,923	$80.12	D	80,148	I	Held through Hercules Holding II, LLC and KKR Partners III, L.P.
Common Stock, par value $0.01 per share^{F3,F1,F8,F11,F12,F13}	May 10, 2016	S	78,529	$80.12	D	49,200	I	Held through Hercules Holding II, LLC and OPERF Co-Investment LLC
Common Stock, par value $0.01 per share^{F3,F1,F9,F11,F12,F13}	May 10, 2016	S	381,309	$80.12	D	238,899	I	Held through Hercules Holding II, LLC and 8 North America Investor L.P.
Common Stock, par value $0.01 per share^{F3,F1,F10,F11,F12,F13}	May 10, 2016	S	332,799	$80.12	D	208,507	I	Held through Hercules Holding II, LLC and ASF Walter Co-Invest L.P.

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1Hercules Holding II, LLC ("Hercules") directly holds shares of common stock, par value $0.01 per share (the "Common Stock"), of HCA Holdings, Inc. (the "Company"), including all of the shares of Common Stock reported herein, except as set forth below. The membership interests of Hercules are held by a private investor group, including certain affiliates of Kohlberg Kravis Roberts & Co. L.P. and Company founder Dr. Thomas F. Frist, Jr. Each of such persons disclaims membership in any such group and each of such persons other than Hercules disclaims beneficial ownership of these securities, except to the extent of its pecuniary interest therein.
F10ASF Walter Co-Invest L.P. may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The general partner of ASF Walter Co-Invest L.P. is ASF Walter Co-Invest GP Limited. The sole shareholder of ASF Walter Co-Invest GP Limited is KKR Fund Holdings L.P.
F11The general partners of KKR Fund Holdings L.P. are KKR Fund Holdings GP Limited and KKR Group Holdings L.P. The sole shareholder of KKR Fund Holdings GP Limited is KKR Group Holdings L.P. The sole general partner of KKR Group Holdings L.P. is KKR Group Limited. The sole shareholder of KKR Group Limited is KKR & Co. L.P. The sole general partner of KKR & Co. L.P. is KKR Management LLC. The designated members of KKR Management LLC are Henry R. Kravis and George R. Roberts.
F12Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.
F13Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, KKR PEI Investments, L.P., KKR PEI Associates, L.P., KKR PEI GP Limited, 8 North America Investor L.P., KKR Associates 8 NA L.P., KKR 8 NA Limited, KKR Fund Holdings GP Limited, ASF Walter Co-Invest L.P., ASF Walter Co-Invest GP Limited, KKR Group Holdings L.P., KKR Group Limited, KKR & Co. L.P., KKR Management LLC and Messrs. Henry R. Kravis and George R. Roberts have made a separate Form 4 filing.
F2Reflects a transfer of interests in Hercules by KKR PEI Investments, L.P. to ASF Walter Co-Invest L.P.
F3Represents shares of Common Stock distributed by Hercules to certain of its members which shares of Common Stock are indirectly beneficially owned by such entities through their direct ownership in Hercules and which shares are subsequently being repurchased by the Company for $80.12 per share.
F4KKR PEI Investments, L.P. may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The sole general partner of KKR PEI Investments, L.P. is KKR PEI Associates, L.P., and the sole general partner of KKR PEI Associates, L.P. is KKR PEI GP Limited. The sole shareholder of KKR PEI GP Limited is KKR Fund Holdings L.P.
F5KKR Millennium Fund may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The sole general partner of the KKR Millennium Fund is KKR Associates Millennium L.P., and KKR Millennium GP LLC is the sole general partner of KKR Associates Millennium L.P. The designated member of KKR Millennium GP LLC is KKR Fund Holdings L.P.
F6KKR 2006 Fund L.P. may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The sole general partner of the KKR 2006 Fund L.P. is KKR Associates 2006 L.P., and the sole general partner of KKR Associates 2006 L.P. is KKR 2006 GP LLC. The designated member of KKR 2006 GP LLC is KKR Fund Holdings L.P.
F7KKR Partners III, L.P. may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The sole general partner of KKR Partners III, L.P. is KKR III GP LLC. The managers of KKR III GP LLC are Messrs. Henry R. Kravis and George R. Roberts.
F8OPERF Co-Investment may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The sole general manager of OPERF Co-Investment is KKR Associates 2006 L.P, and the sole general partner of KKR Associates 2006 L.P. is KKR 2006 GP LLC. The designated member of KKR 2006 GP LLC is KKR Fund Holdings L.P.
F98 North America Investor L.P. may be deemed to beneficially own these shares of Common Stock by virtue of the membership interests it holds in Hercules. The sole general partner of 8 North America Investor L.P. is KKR Associates 8 NA L.P., and the sole general partner of KKR Associates 8 NA L.P. is KKR 8 NA Limited. The sole shareholder of KKR 8 NA Limited is KKR Fund Holdings L.P.

Remarks

(14) Mr. Gallagher is signing in his capacity as attorney-in-fact for William J. Janetschek, a member of KKR Millennium GP LLC, the general partner of KKR Associates Millennium L.P., the general partner of KKR Millennium Fund L.P. (15) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a member of KKR Millennium GP LLC, the general partner of KKR Associates Millennium L.P. (16) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a member of KKR Millennium GP LLC. (17) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a member of KKR 2006 GP LLC, the general partner of KKR Associates 2006 L.P., the general partner of KKR 2006 Fund L.P. (18) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a member of KKR 2006 GP LLC, the general partner of KKR Associates 2006 L.P. (19) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a member of KKR 2006 GP LLC. (20) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a member of KKR 2006 GP LLC, the general partner of KKR Associates 2006 L.P., the manager of OPERF Co-Investment LLC. (21) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, an authorized person of KKR III GP LLC, the general partner of KKR Partners III, L.P. (22) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, an authorized person of KKR III GP LLC. (23) Mr. Gallagher is signing in his capacity as attorney-in-fact for Mr. Janetschek, a director of KKR Fund Holdings GP Limited, the general partner of KKR Fund Holdings L.P.