8-K - SPH - Equibles

UNITED STATES

SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15 (d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)

October 22, 2025

Commission File Number: 1-14222

SUBURBAN PROPANE PARTNERS, L.P.

(Exact name of registrant as specified in its charter)

Delaware	22-3410353
(State or Other Jurisdiction	(IRS Employer
of Incorporation)	Identification No.)

240 Route 10 West

Whippany, New Jersey 07981

(973)

887-5300

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of exchange on which registered
Common Units	SPH	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

ITEM 7.01. REGULATION FD DISCLOSURE

ITEM 8.01. OTHER EVENTS

On October 22, 2025, Suburban Propane Partners, L.P. issued a press release (the "Press Release") announcing its Fiscal 2025 Full Year and Fourth Quarter Results Conference Call. A copy of the Press Release has been furnished as Exhibit 99.1 to this Current Report.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS

(d) Exhibits.

99.1	Press Release of Suburban Propane Partners, L.P. dated October 22, 2025, announcing the Fiscal 2025 Full Year and Fourth Quarter Results Conference Call.
104	Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

October 22, 2025	SUBURBAN PROPANE PARTNERS, L.P.
	By:	/s/ MICHAEL A. KUGLIN
	Name:	Michael A. Kuglin
	Title:	Chief Financial Officer

EX-99.1

Exhibit 99.1

News Release<br><br>Contact: Michael A. Kuglin<br><br>Chief Financial Officer<br><br>P.O. Box 206, Whippany, NJ 07981-0206<br><br>Phone: 973-503-9252

_____________________________________________________________________________________

FOR IMMEDIATE RELEASE

Suburban Propane Partners, L.P. to Hold

Fiscal 2025 Full Year and Fourth Quarter Results Conference Call

Whippany, New Jersey, October 22, 2025 -- Suburban Propane Partners, L.P. (NYSE:SPH), announced today that it has scheduled its Fiscal 2025 Full Year and Fourth Quarter Results Conference Call for Thursday, November 13, 2025 at 9:00 AM Eastern Time.

Analysts, investors and other interested parties are invited to listen to management’s discussion of Fiscal 2025 Full Year and Fourth Quarter results and business outlook by accessing the call via the internet at www.suburbanpropane.com, or by telephone as follows:

Phone #: (888) 880-3330

Ask for: Suburban Propane Partners Fiscal 2025 Full Year and Fourth Quarter Results Conference Call.

In addition, a replay of the conference call will be available from 12:00 PM Eastern Time, Thursday, November 13, 2025 until 11:55 PM Eastern Time, Thursday, November 20, 2025 and can be accessed by dialing (800) 770-2030, Access Code 4445275#. The replay will also be available via Suburban’s website until the replay for next quarter’s call is posted.

About Suburban Propane Partners, L.P.

Suburban Propane Partners, L.P. (“Suburban Propane”) is a publicly traded master limited partnership listed on the New York Stock Exchange. Headquartered in Whippany, New Jersey, Suburban Propane has been in the customer service business since 1928 and is a nationwide distributor of propane, renewable propane, renewable natural gas (“RNG”), fuel oil and related products and services, as well as a marketer of natural gas and electricity and producer of and investor in low carbon alternatives, servicing the energy needs of approximately 1 million residential, commercial, governmental, industrial and agricultural customers through approximately 700 locations across 42 states.

Suburban Propane is supported by three core pillars: (1) Suburban Commitment – showcasing Suburban Propane’s almost 100-year legacy, an ongoing commitment to the highest standards for dependability, flexibility, and reliability that underscores Suburban Propane’s commitment to

excellence in customer service; (2) SuburbanCares – highlighting continued dedication to giving back to local communities across Suburban Propane’s national footprint; and (3) Go Green with Suburban Propane – promoting the clean burning and versatile nature of propane and renewable propane as a bridge to a green energy future and investing in the next generation of innovative, renewable energy alternatives.

For additional information on Suburban Propane, please visit www.suburbanpropane.com.