Company: SPH
Filing Date: 2025-02-12
Form Type: S-3
Source: 0001193125-25-024546
Chunk: 53

Company: SUBURBAN PROPANE PARTNERS LP
Filing Date: 2025-02-12
Form: S-3
Chunk 53
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 the Securities and Exchange Commission such indemnification is against public policy as expressed in
the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person
of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel
the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the
final adjudication of such issue.

II-4

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrants certifies that it has reasonable grounds to believe that it meets all the requirements for filing on Form S-3and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Whippany, New Jersey, on the 11th day of February, 2025.

| SUBURBAN PROPANE PARTNERS, L.P. |     |                                                   |
| By:                             |     | /s/ Michael A. Stivala                            |
| Name:                           |     | Michael A. Stivala                                |
| Title:                          |     | President, Chief Executive Officer and Supervisor |

POWER OF ATTORNEY We, the undersigned supervisors and officers, do hereby constitute and appoint Michael A. Stivala, Michael A. Kuglin and Bryon Keopke, and each of them severally, our true and lawful attorneys-in-fact andagents with full power of substitution and re-substitution forus and in our name, place, and stead, to do any and all acts and things in our name and on our behalf in our capacities as supervisors and officers and to execute any and all instruments for us and in our names in the capacities indicated below, which said attorneys-in-fact andagents may deem necessary or advisable to enable Suburban Propane Partners, L.P. to comply with the Securities Act of 1933, as amended (the “Securities Act”), and any rules, regulations and requirements of the Securities and Exchange Commission, in connection with this registration statement on Form S-3, includingspecifically, but