UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Date: July 31, 2015 UBS Group AG Commission File Number: 1-36764 UBS AG Commission File Number: 1-15060 (Registrants’ Names) Bahnhofstrasse 45, Zurich, Switzerland (Address of principal executive office) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ⌧ Form 40-F Explanatory Note UBS produces regular quarterly reports, which are filed with the SEC under Form 6-K. These reports are prepared in accordance with International Financial Reporting Standards (IFRS). SEC regulations require certain additional disclosure to be included in registration statements relating to offerings of securities. Certain of this additional disclosure was included with UBS’s second quarter 2015 report submitted to the SEC on Form 6-K on 28 July 2015, and additional disclosure follows herein. This information should be read in conjunction with UBS’s annual report on Form 20-F for the year ended 31 December 2014, filed with the SEC on 13 March 2015, as well as UBS’s first quarter 2015 report and second quarter report 2015 submitted to the SEC on Forms 6-K on 5 May 2015 and 28 July 2015, respectively. Note 20 Supplemental guarantor information required under SEC regulations Supplemental guarantor information required under has fully and unconditionally guaranteed these securities. SEC regulations The non-consolidated issuing US domiciled entities are presented in a separate column in the supplemental Guarantee of PaineWebber securities guarantor information provided in the following tables. Prior to its acquisition by UBS in 2000, Paine Webber Amounts presented in this column are eliminated in the Group Inc. (PaineWebber) was an SEC registrant. Upon Elimination entries column, as these entities are not acquisition, PaineWebber was merged into UBS consolidated. UBS AG’s obligations under the guarantee Americas Inc., a wholly owned subsidiary of UBS AG. are subordinated to the prior payment in full of the Following the acquisition, UBS AG entered into a full and deposit liabilities of UBS AG and all other liabilities of unconditional guarantee of the senior notes (Debt UBS AG. As of 30 June 2015, the outstanding amount of Securities) issued by PaineWebber. Under the the preferred securities was USD 1.3 billion and the guarantee, if UBS Americas Inc. fails to make any timely amount of senior liabilities of UBS AG to which the payment under the Debt Securities agreements, the holders of these securities would be subordinated was holders of the Debt Securities or the Debt Securities approximately CHF 881 billion. trustee may demand payment from UBS AG without first proceeding against UBS Americas Inc. Joint liability of UBS Switzerland AG As of 30 June 2015, the amount of outstanding senior In June 2015, the Retail & Corporate and Wealth notes of UBS Americas Inc. was approximately CHF 145 Management businesses booked in Switzerland were million. These senior notes mature between 2017 and transferred from UBS AG to UBS Switzerland AG through 2018. an asset transfer in accordance with the Swiss Merger Act. Under the terms of the asset transfer agreement, Guarantee of other securities UBS Switzerland AG assumed joint liability for Certain US-domiciled entities that are 100% legally contractual obligations of UBS AG existing on the asset owned by UBS AG have outstanding trust preferred transfer date, including the existing guarantee of securities, which are registered under the US Securities abovementioned PaineWebber and other securities. To Act. These entities, UBS Preferred Funding Trust IV and reflect this joint liability, UBS Switzerland AG is, on a UBS Preferred Funding Trust V, are not consolidated by prospective basis, presented in a separate column as a UBS AG as UBS AG does not absorb any variability from subsidiary co-guarantor. the performance of these entities. However, UBS AG 1 Introduction Note 20 Supplemental guarantor information required under SEC regulations (continued) Supplemental guarantor consolidated income statement CHF million UBS UBS Preferred For the six months ended 30 June UBS AG Switzerland AG UBS Funding Trust Other Elimination UBS AG 2015 (standalone)112 (standalone) Americas Inc. IV & V subsidiaries 2 entries (consolidated) Operating income Interest income 5,056 1,121 824 31 745 (1,193) 6,583 Interest expense (3,311) (286) (320) 0 (674) 1,137 (3,454) Net interest income 1,745 835 504 31 71 (57) 3,129 Credit loss (expense)/recovery (26) (5) 4 0 3 (6) (29) Net interest income after credit loss expense 1,719 830 507 31 75 (62) 3,100 Net fee and commission income 2,094 873 3,721 0 2,193 (49) 8,832 Net trading income 4,064 233 142 0 152 (851) 3,741 Other income (624) 208 378 0 (601) 1,612 972 Total operating income 7,253 2,144 4,747 31 1,819 650 16,644 Operating expenses Personnel expenses 3,851 534 3,193 0 719 0 8,297 General and administrative expenses 491 769 1,435 0 774 0 3,470 Depreciation and impairment of property, equipment and software 313 4 75 0 38 0 429 Amortization and impairment of intangible assets 11 0 41 0 6 0 58 Total operating expenses 4,666 1,307 4,743 0 1,537 0 12,254 Operating profit/(loss) before tax 2,587 837 4 31 282 650 4,391 Tax expense/(benefit) 690 207 (1) 0 213 3 1,112 Net profit/(loss) 1,897 630 5 31 68 647 3,278 Net profit/(loss) attributable to preferred noteholders 76 0 0 31 0 (31) 76 Net profit/(loss) attributable to non-controlling interests 0 0 0 0 1 0 1 Net profit/(loss) attributable to shareholders 1,821 630 5 0 67 678 3,201 1 Amounts presented for UBS AG (standalone) and UBS Switzerland AG (standalone) represent IFRS-standalone information. Refer to the “Supplemental information (unaudited) for UBS AG (standalone)” section of this report for UBS AG (standalone) financial information prepared in accordance with Swiss GAAP. Refer to the “Financial information” section of the UBS Group second quarter 2015 report for UBS Switzerland AG (standalone) interim financial statements prepared in accordance with Swiss GAAP. 2 Amounts presented in these columns serve as a basis for preparing UBS AG (consolidated) financial statements in accordance with IFRS. 2 Note 20 Supplemental guarantor information required under SEC regulations (continued) Supplemental guarantor consolidated statement of comprehensive income CHF million UBS UBS Preferred For the six months ended UBS AG Switzerland AG UBS Funding Trust Other Elimination UBS AG 30 June 2015 (standalone)112 (standalone) Americas Inc. IV & V subsidiaries 2 entries (consolidated) Comprehensive income attributable to shareholders Net profit/(loss) 1,821 630 5 0 67 678 3,201 Other comprehensive income Other comprehensive income that may be reclassified to the income statement Foreign currency translation, net of tax (225) 0 (90) 0 (595) (666) (1,577) Financial investments available- for-sale, net of tax (60) 3 (8) 0 (5) 2 (67) Cash flow hedges, net of tax (402) (156) 0 0 0 29 (530) Total other comprehensive income that may be reclassified to the income statement, net of tax (687) (153) (98) 0 (600) (635) (2,173) Other comprehensive income that will not be reclassified to the income statement Defined benefit plans, net of tax 476 (348) 8 0 20 (18) 138 Property revaluation surplus, net of tax 0 0 0 0 0 0 0 Total other comprehensive income that will not be reclassified to the income statement, net of tax 476 (348) 8 0 20 (18) 138 Total other comprehensive income (211) (501) (89) 0 (580) (654) (2,035) Total comprehensive income attributable to shareholders 1,610 129 (84) 0 (513) 24 1,166 Total comprehensive income attributable to preferred noteholders (98) 0 0 (47) 0 47 (98) Total comprehensive income attributable to non-controlling interests 0 0 0 0 (2) 0 (2) Total comprehensive income 1,513 129 (84) (47) (515) 71 1,066 1 Amounts presented for UBS AG (standalone) and UBS Switzerland AG (standalone) represent IFRS-standalone information. Refer to the “Supplemental information (unaudited) for UBS AG (standalone)” section of this report for UBS AG (standalone) financial information prepared in accordance with Swiss GAAP. Refer to the “Financial information” section of the UBS Group second quarter 2015 report for UBS Switzerland AG (standalone) interim financial statements prepared in accordance with Swiss GAAP. 2 Amounts presented in these columns serve as a basis for preparing UBS AG (consolidated) financial statements in accordance with IFRS. 3 Introduction Note 20 Supplemental guarantor information required under SEC regulations (continued) Supplemental guarantor consolidated balance sheet UBS UBS Preferred CHF million UBS AG Switzerland AG UBS Funding Trust Other Elimination UBS AG As of 30 June 2015 (standalone)112 (standalone) Americas Inc. IV & V subsidiaries 2 entries (consolidated) Assets Cash and balances with central banks 47,542 31,195 1,947 0 3,961 0 84,646 Due from banks 45,717 16,748 12,226 0 37,409 (98,757) 13,343 Cash collateral on securities borrowed 29,373 7,852 38,632 0 6,320 (54,487) 27,689 Reverse repurchase agreements 66,015 21,853 22,523 0 12,271 (61,814) 60,848 Trading portfolio assets 88,929 3,409 6,895 1,223 33,950 (5,920) 128,486 of which: assets pledged as collateral which may be sold or repledged by counterparties 43,177 0 3,510 0 9,408 (5,552 ) 50,544 Positive replacement values 179,402 6,759 17,281 0 36,058 (65,819) 173,681 Cash collateral receivables on derivative