Company: SPH
Filing Date: 2025-02-21
Form Type: 424B5
Source: 0001193125-25-030891
Chunk: 38

Company: SUBURBAN PROPANE PARTNERS LP
Filing Date: 2025-02-21
Form: 424B5
Chunk 38
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(b) a non-U.S. government, an international organization, or any wholly owned agency or
instrumentality of either of the foregoing; or

(c) a tax-exempt entity;

(iii) the amount and description of units held, acquired, or transferred for the beneficial owner; and

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(iv) specific information including the dates of acquisitions and transfers, means of acquisitions, and acquisition cost for purchases, as well as the amount of net proceeds from transfers. Brokers and financial institutions are required to furnish additional information, including whether they are United States persons and specific information on units they acquire, hold, or transfer for their own account. Reportable Transactions If we were to engage in a “reportable transaction,” we (and possibly a unitholder and others) would be required to make a detailed disclosure of the transaction to the IRS. A transaction may be a reportable transaction based upon any of several factors, including the fact that it is a type of tax avoidance transaction publicly identified by the IRS as a “listed transaction” or that it produces certain kinds of losses in excess of $2 million in any single year, or $4 million in any combination of six successive tax years. Our participation in a reportable transaction could increase the likelihood that our U.S. federal income tax information return (and possibly a unitholder’s tax return) would be audited by the IRS. Please read “— Information Returns and Audit Procedures.” Moreover, if we were to participate in a reportable transaction with a significant purpose to avoid or evade tax, or in any listed transaction, a unitholder may be subject to the following:

| • |     | accuracy-related penalties with a broader scope, significantly narrower                             
 exceptions, and potentially greater amounts than described below at “— Accuracy-Related Penalties”; |

| • |     | for those unitholders otherwise entitled to deduct interest on U.S. federal tax deficiencies, nondeductibility of 
 interest on any resulting tax liability if the transaction is not properly disclosed; and                         |

| • |     | in the case of a listed transaction that is not properly disclosed, an extended statute of limitations. |

We do not expect to engage in any “reportable transactions.” Accuracy-RelatedPenalties Certain penalties may be imposed on taxpayers as a result of an underpayment of tax that is attributable to one or more specified causes, including: (i) negligence or disregard of rules or regulations, (ii) substantial understatements of income tax, (iii) substantial valuation misstatements and (