X0508 4 2023-12-19 0 0001638833 Surgery Partners, Inc. SGRY 0001040508 BAIN CAPITAL INVESTORS LLC 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001712857 BCPE Seminole GP LLC 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001712856 BCPE Seminole Holdings LP 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001958242 BCPE Seminole GP II LLC 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001958422 BCPE Seminole Holdings II Intermediate LP 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001958305 BCPE Seminole Holdings III, L.P. 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001964244 BCPE Seminole GP III LLC 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0001958120 BCPE Seminole Holdings IV, L.P. 200 CLARENDON STREET BOSTON MA 02116 1 0 1 0 0 Common Stock 2023-12-19 4 S 0 7826870 33.44 D 50421379 I See footnotes Common Stock 2023-12-19 4 J 0 474407 0.00 D 49946972 I See footnotes Bain Capital Investors, LLC ("BCI") is the sole member of BCPE Seminole GP LLC ("BCPE Seminole GP"), which is the general partner of BCPE Seminole Holdings LP ("BCPE Seminole") and BCPE Seminole Holdings IV, L.P. ("BCPE Seminole IV"). As a result, each of BCI and BCPE Seminole GP may be deemed to share voting and dispositive power with respect to the shares of Common Stock held by BCPE Seminole and BCPE Seminole IV. Each of BCI and BCPE Seminole GP disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein. BCI is the sole member of BCPE Seminole GP II LLC ("BCPE Seminole GP II"), which is the general partner of BCPE Seminole Holdings II Intermediate LP ("BCPE Seminole II"). As a result, each of BCI and BCPE Seminole GP II may be deemed to share voting and dispositive power with respect to the shares of Common Stock held by BCPE Seminole II. Each of BCI and BCPE Seminole GP II disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein. BCI is the sole member of BCPE Seminole GP III LLC ("BCPE Seminole GP III"), which is the general partner of BCPE Seminole Holdings III, L.P. ("BCPE Seminole III"). As a result, each of BCI and BCPE Seminole GP III may be deemed to share voting and dispositive power with respect to the shares of Common Stock held by BCPE Seminole III. Each of BCI and BCPE Seminole GP III disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein. BCI is the general partner of Bain Capital Partners XI, L.P., which is the general partner of Bain Capital Fund XI, L.P. ("Bain Capital Fund XI"). The shares of Common Stock held by BCPE Seminole II, BCPE Seminole III and BCPE Seminole IV were previously acquired from BCPE Seminole and Bain Capital Fund XI in transactions exempt from Section 16 pursuant to Rule 16a-13. On December 19, 2023, BCPE Seminole and BCPE Seminole II sold 1,706,257 and 6,120,613 shares of Common Stock, respectively, in an underwritten public offering (the "December 2023 Secondary Offering"). On December 19, 2023, BCPE Seminole distributed 474,407 shares of Common Stock to one or more members or partners in connection with certain charitable gifts made on December 19, 2023 (the "December 2023 Distribution"). Following the December 2023 Secondary Offering and December 2023 Distribution, BCPE Seminole held 10,708,102 shares of Common Stock, BCPE Seminole II held 30,055,197 shares of Common Stock, BCPE Seminole III held 4,232,353 shares of Common Stock and BCPE Seminole IV held 4,951,320 shares of Common Stock. Bain Capital Investors, LLC, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole GP LLC, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole Holdings LP, By: BCPE Seminole GP LLC, its general partner, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole GP II LLC, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole Holdings II Intermediate LP, By: BCPE Seminole GP II LLC, its general partner, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole Holdings III, L.P., By: BCPE Seminole GP III LLC, its general partner, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole GP III LLC, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21 BCPE Seminole Holdings IV, L.P., By: BCPE Seminole GP LLC, its general partner, By: Bain Capital Investors, LLC, its sole member, By: /s/ Andrew Kaplan, Title: Partner 2023-12-21