On November 2, 2026, the board of directors of Westlake Chemical Partners GP LLC ("Westlake GP"), the Partnership's general partner, declared a quarterly cash distribution for the three months ended September 30, 2026 of $0.4714 per common unit. This distribution is payable on December 1, 2026 to unitholders of record as of November 13, 2026.


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Net income attributable to the Partnership	$	16,219	$	14,653	$	44,626	$	34,159
Less:
Limited partners' distribution declared on common units	16,618		16,615		49,848		49,838


Distribution in excess of net income	$	(399)	$	(1,962)	$	(5,222)	$	(15,679)

Net income per unit applicable to common limited partner units is computed by dividing the respective limited partners' interest in net income by the weighted-average number of common units outstanding for the period. Because the Partnership has more than one class of participating securities, it uses the two-class method when calculating the net income per unit applicable to limited partners. The classes of participating securities include common units and incentive distribution rights. Net income attributable to the Partnership is allocated to the unitholders in accordance with their respective ownership percentages in preparation of the consolidated statements of changes in equity. However, in the event distributions related to the incentive distribution rights are made, net income equal to the amount of those distributions would first be allocated to the general partner before the remaining net income would be allocated to the unitholders based on their respective ownership percentages. Basic and diluted net income per unit is the same because the Partnership does not have any potentially dilutive units outstanding for the periods presented.


	Three Months Ended September 30, 2026
	Limited Partners' Common Units		Incentive Distribution Rights		Total
Net income attributable to the Partnership:
Distribution	$	16,618	$	—	$	16,618
Distribution in excess of net income	(399)		—		(399)
Net income	$	16,219	$	—	$	16,219
Weighted average units outstanding:
Basic and diluted	35,250,449				35,250,449
Net income per limited partner unit:
Basic and diluted	$	0.46


	Three Months Ended September 30, 2025
	Limited Partners' Common Units		Incentive Distribution Rights		Total
Net income attributable to the Partnership:
Distribution	$	16,615	$	—	$	16,615
Distribution in excess of net income	(1,962)		—		(1,962)
Net income	$	14,653	$	—	$	14,653
Weighted average units outstanding:
Basic and diluted	35,242,934				35,242,934
Net income per limited partner unit:
Basic and diluted	$	0.42


	Nine Months Ended September 30, 2026
	Limited Partners' Common Units		Incentive Distribution Rights		Total
Net income attributable to the Partnership:
Distribution	$	49,848	$	—	$	49,848
Distribution in excess of net income	(5,222)		—		(5,222)
Net income	$	44,626	$	—	$	44,626
Weighted average units outstanding:
Basic and diluted	35,247,419				35,247,419
Net income per limited partner unit:
Basic and diluted	$	1.27


	Nine Months Ended September 30, 2025
	Limited Partners' Common Units		Incentive Distribution Rights		Total
Net income attributable to the Partnership:
Distribution	$	49,838	$	—	$	49,838
Distribution in excess of net income	(15,679)		—		(15,679)
Net income	$	34,159	$	—	$	34,159
Weighted average units outstanding:
Basic and diluted	35,240,031				35,240,031
Net income per limited partner unit:
Basic and diluted	$	0.97

The amended Partnership Agreement provides that the Partnership will distribute cash that is deemed to be an appropriate portion of the Partnership's total operating surplus. Incentive distribution rights represent the right to receive increasing percentages (15.0 %, 25.0 % and 50.0 %) of quarterly distributions from operating surplus after the target distribution levels have been achieved. If cash distributions to the Partnership's unitholders exceed $1.2938 per common unit in any quarter, the Partnership's unitholders and Westlake, as the holder of the Partnership's incentive distribution rights, will receive distributions according to the following percentage allocations:

If cash distributions to the Partnership's unitholders do not exceed $1.2938 per common unit in a quarter, then no distribution is made with respect to the Partnership's incentive distribution rights for such quarter. The Partnership's distribution for the three months ended September 30, 2026 was $0.4714 per common unit, which did not exceed the $1.2938 per unit threshold, and, as a result, no distribution was made with respect to the Partnership's incentive distribution rights to Westlake, as the holder of the Partnership's incentive distribution rights.