X0306 4 2018-02-13 1 0001534701 Phillips 66 PSX 0001067983 BERKSHIRE HATHAWAY INC 3555 FARNAM STREET OMAHA NE 68131 0 0 1 0 0000315090 BUFFETT WARREN E 3555 FARNAM STREET OMAHA NE 68131 0 0 1 0 0000314943 NATIONAL INDEMNITY CO 1314 DOUGLAS STREET OMAHA NE 68102 0 0 1 0 Common Stock 2018-02-13 4 D 0 35000000 93.725 D 45689892 I See footnotes 39,587,892 of the total reported securities are owned by the following subsidiaries of Berkshire Hathaway Inc. ("Berkshire"): National Indemnity Co. (28,291,892), National Fire & Marine Insurance Co. (1,163,000), National Liability & Fire Insurance Co. (1,266,000), Berkshire Hathaway Assurance Corp. (1,558,000), Berkshire Hathaway Homestate Insurance Co. (782,000), Berkshire Hathaway Specialty Insurance Co. (1,314,000) and Columbia Insurance Company (5,213,000). As Berkshire is in the chain of ownership of each of these subsidiaries, it may be deemed presently to both beneficially own and have a pecuniary interest in all shares of Common Stock presently owned by these each of these subsidiaries. Warren E. Buffett, as the controlling stockholder of Berkshire, may be deemed presently to beneficially own, but only to the extent he has a pecuniary interest in, the shares of Common Stock presently owned by each such subsidiary. Continuation of Footnote 1: Mr. Buffett disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein. Footnote 2: 6,102,000 of the total reported securities are owned by the following pension plans of Berkshire's subsidiaries: Berkshire Hathaway Consolidated Pension Plan Master Trust (3,602,300) and GEICO Corporation Pension Plan Trust (2,499,700). Each of Berkshire, Mr. Buffett and these pension plans disclaim beneficial ownership in such shares. /s/ Warren E. Buffett (on behalf of himself and each other reporting person hereunder) 2018-02-15