STAR GROUP, L.P.

B USINESS Structure Star Group, L.P. ( Star the Company, we, us, or our ) is a home heating oil and propane distributor and services provider with one reportable operating segment that principally provides heating related services to residential and commercial customers. Our unitholders voted in favor of proposals to have the Company elect to be treated as a corporation, instead of a partnership, for federal income tax purposes (commonly referred to as a check-the-box election ), along with amendments to our partnership agreement to effect such changes in income tax classification, in each case effective November 1, 2017. In addition, the Company changed its name, effective October 25, 2017, from Star Gas Partners, L.P. to Star Group, L.P. to more closely align our name with the scope of our product and service offerings. Unitholders will receive a Form 1099-DIV and will not receive a Schedule K-1 as in tax years prior to December 31, 2017. Our legal structure has remained a Delaware limited partnership and the distribution provisions under our limited partnership agreement, including the incentive distribution structure has remained unchanged. As of November 30, 2025, we had outstanding 33.0 million common partner units (NYSE: SGU ) representing a 99.0% limited partner interest in Star, and 0.3 million general partner units, representing a 1.0% general partner interest in Star. 3 The following chart depicts the ownership of Star as of November 30, 2025: Star Group, L.P.