X0202 SCHEDULE 13D/A 0001104659-08-046688 0001052192 XXXXXXXX LIVE 28 Common Stock, par value $0.01 per share 08/18/2026 false 0001060391 760759100 Republic Services, Inc.

5353 East City North Drive Phoenix AZ 85054

Jeff Shim, Esq. (425) 889-7900 2365 Carillon Point Kirkland WA 98033 0001052192 N Cascade Investment, L.L.C. WC N WA 112403625.00 0.00 112403625.00 0.00 112403625.00 N 36.7 OO All shares of the common stock, $0.01 par value per share (the "Common Stock") of Republic Services, Inc. (the "Issuer") held by Cascade Investment, L.L.C. ("Cascade") may be deemed to be beneficially owned by William H. Gates III as the sole member of Cascade. Item 13 is based on 306,212,978 shares of Common Stock outstanding as of July 30, 2026, as reported on the Issuer's Form 10-Q filed on August 7, 2026. 0000902012 N William H. Gates III WC N X1 112403625.00 0.00 112403625.00 0.00 112403625.00 N 36.7 IN All shares of the Common Stock of the Issuer held by Cascade may be deemed to be beneficially owned by William H. Gates III as the sole member of Cascade. Item 13 is based on 306,212,978 shares of Common Stock outstanding as of July 30, 2026, as reported on the Issuer's Form 10-Q filed on August 7, 2026. Common Stock, par value $0.01 per share Republic Services, Inc. 5353 East City North Drive Phoenix AZ 85054 This Amendment No. 28 to Schedule 13D ("Amendment") amends and supplements the Schedule 13D previously filed by Cascade Investment, L.L.C. ("Cascade") and William H. Gates III ("Mr. Gates," and together with Cascade, the "Reporting Persons") with the Securities and Exchange Commission on July 21, 2008, as amended, relating to the common stock, par value $0.01 per share (the "Common Stock"), of Republic Services, Inc. (the "Issuer"). Information in the Schedule 13D remains in effect except to the extent that it is amended or superseded by subsequently filed information, including information in this Amendment. Cascade purchased the Common Stock with working capital. See items 11 and 13 of the cover pages to this Amendment for the aggregate number of shares of Common Stock and percentage of Common Stock beneficially owned by each of the Reporting Persons. See items 7 through 10 of the cover pages to this Amendment for the number of shares of Common Stock beneficially owned by each of the Reporting Persons as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote, and sole or shared power to dispose or to direct the disposition. Cascade purchased 1,599,643 shares of Common Stock during the 60-day period ended August 19, 2026 in open-market transactions at the weighted-average price per share set forth in Exhibit 1, attached hereto and incorporated by reference herein. None. Not applicable. Exhibit 1 - Transactions effected during the 60-day period ended August 19, 2026 Cascade Investment, L.L.C. /s/ Alan Heuberger 08/20/2026 William H. Gates III /s/ Alan Heuberger 08/20/2026 This Amendment is being filed jointly by the Reporting Persons pursuant to the Joint Filing Agreement, dated July 21, 2008, and included with the signature page to the Reporting Persons' Schedule 13D filed on July 21, 2008, SEC File No. 005-54333, and incorporated by reference herein. Duly authorized under Special Limited Power of Attorney appointing Alan Heuberger attorney-in-fact, dated October 11, 2013, by and on behalf of Michael Larson, filed as Exhibit 99.1 to Amendment No. 9 to Cascade's Schedule 13D with respect to Western Asset/Claymore Inflation-Linked Opportunities & Income Fund on December 11, 2013, SEC File No. 005-81261, and incorporated by reference herein. Duly authorized under Special Limited Power of Attorney appointing Alan Heuberger attorney-in-fact, dated August 12, 2008, by and on behalf of William H. Gates III, filed as Exhibit 99.2 to Amendment No. 1 to Cascade's Schedule 13D with respect to Otter Tail Corporation on April 15, 2009, SEC File No. 005-06638, and incorporated by reference herein.