Simpson Thacher represented Cisco Systems, Inc. (the “Company”) in connection with its offering of (i) $1,000,000,000 in aggregate principal amount of 4.900% Senior Notes due 2026, (ii) $2,000,000,000 in aggregate principal amount of 4.800% Senior Notes due 2027, (iii) $2,500,000,000 in aggregate principal amount of 4.850% Senior Notes due 2029, (iv) $2,500,000,000 in aggregate principal amount of 4.950% Senior Notes due 2031, (v) $2,500,000,000 in aggregate principal amount of 5.050% Senior Notes due 2034, (vi) $2,000,000,000 in aggregate principal amount of 5.300% Senior Notes due 2054 and (vii) $1,000,000,000 in aggregate principal amount of 5.350% Senior Notes due 2064. The net proceeds of the offering will be used for general corporate purposes, including to partially finance the proposed acquisition of Splunk Inc. by the Company, as contemplated by that certain Agreement and Plan of Merger, dated as of September 20, 2023, by and among the Company, Splunk Inc. and Spirit Merger Corp., as the same may be amended, supplemented or otherwise modified.~~Cisco Systems, Inc. (NASDAQ: CSCO) designs and sells a broad range of technologies that power the Internet, and integrates its product portfolios across networking, security, collaboration, applications and the clouds to create highly secure, intelligent platforms for its customers’ digital businesses.~~The Simpson Thacher team included William Brentani, Daniel Webb, Barry Lau and Dina Stumpf (Capital Markets); and Jonathan Cantor (Tax).