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RELATED PARTY TRANSACTIONS: (Tables)

6 Months Ended

Jun. 30, 2025

RELATED PARTY TRANSACTIONS:

Schedule of receivable and payable balances with related parties

​

Receivable and payable balances with related parties are shown below (in millions):

​

​	​	​	​	​	​	​
​	​	At June 30,		​	At December 31,
​		2025			2024
Related parties receivable current:	​	​	​	​	​	​
Grupo Mexico and affiliates:	​	​	​	​	​	​
Asarco LLC	​	$	8.1	​	$	7.1
AMMINCO Apoyo Administrativo, S.A. de C.V. (“AMMINCO”)	​	​	(*)	​	​	(*)
Ferrocarril Mexicano, S.A. de C.V.	​		(*)	​	​	(*)
Mexico Generadora de Energia S. de R.L. ("MGE")	​	​	5.1	​	​	5.4
Mexico Compania Constructora S.A de C.V.	​	​	(*)	​	​	(*)
​	​	​	​	​	​	​
Related to the controlling group:	​	​	​	​	​	​
Empresarios Industriales de Mexico, S.A. de C.V.	​	​	1.2	​	​	0.9
Mexico Transportes Aereos, S.A. de C.V. ("Mextransport")	​	​	0.2	​	​	—
Operadora de Cinemas, S.A. de C.V.	​	​	0.1	​	​	0.1
​	​	$	14.8	​	$	13.5
​	​	​	​	​	​	​
Related parties payable:	​	​	​	​	​	​
Grupo Mexico and affiliates:	​	​	​	​	​	​
AMMINCO	​	$	9.5	​	$	6.0
Asarco LLC	​	​	33.8	​	​	6.0
Eolica El Retiro, S.A.P.I. de C.V.	​		0.4	​		0.4
Ferrocarril Mexicano, S.A. de C.V.	​		4.4	​		2.9
Grupo Mexico Servicios	​	​	2.7	​	​	4.3
MGE	​	​	36.4	​	​	15.9
Mexico Compania Constructora S.A de C.V.	​	​	7.2	​	​	8.0
Parque Eolico de Fenicias, S. de R.L. de C.V.	​	​	6.2	​	​	2.6
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.	​	​	0.9	​	​	2.1
Related to the controlling group:	​	​	​	​	​	​
Boutique Bowling de Mexico, S.A. de C.V.	​		0.4	​		0.5
Mextransport	​		0.1	​		0.1
Operadora de Cinemas, S.A. de C.V.	​	​	0.2	​	​	0.4
​	​	$	102.3	​	$	49.2

(*) Less than $0.1 million.

Grupo Mexico and affiliates

RELATED PARTY TRANSACTIONS:

Schedule of purchase and sales activities with related parties

The following table summarizes the purchase and sale activities with Grupo Mexico and its affiliates in the six-month periods ended June 30, 2025 and 2024 (in millions):

​	​	​	​	​	​	​
​		2025			2024
Purchase activity	​	​	​	​	​	​
Asarco LLC	​	$	28.0	​	$	2.7
Eolica El Retiro, S.A.P.I. de C.V.	​		1.0	​		4.0
Ferrocarril Mexicano, S.A. de C.V.	​		21.3	​		24.0
Grupo Mexico Servicios	​	​	10.1	​	​	10.1
AMMINCO	​	​	5.0	​	​	5.0
MGE	​		109.8	​		92.3
Mexico Compania Constructora S.A. de C.V.	​	​	24.8	​	​	44.0
Parque Eolico de Fenicias, S. de R.L. de C.V.	​	​	20.3	​	​	—
Grupo Mexico Servicios de Ingenieria S. A. de C.V.	​		4.7	​		9.5
Total purchases	​	$	225.0	​	$	191.6
Sales activity	​	​	​	​	​	​
Asarco LLC	​	$	27.4	​	$	14.3
AMMINCO	​	​	(*)	​	​	(*)
Ferrocarril Mexicano, S.A. de C.V.	​		—	​		(*)
MGE	​	​	31.9	​	​	23.3
Total sales	​	$	59.3	​	$	37.6

(*) Less than $0.1 million.

Companies with relationship to the controlling group

RELATED PARTY TRANSACTIONS:

Schedule of purchase and sales activities with related parties

The following table summarizes the purchase and sales activities with other Larrea family companies in the six-month periods ended June 30, 2025 and 2024 (in millions):

​	​	​	​	​	​	​
​		2025			2024
Purchase activity	​	​	​	​	​	​
Boutique Bowling de Mexico S.A. de C.V.	​	$	0.3	​	$	0.3
Mextransport	​	​	1.2	​	​	1.2
Operadora de Cinemas S.A. de C.V.	​	​	0.2	​	​	0.2
Total purchases	​	$	1.7	​	$	1.7
​	​	​	​	​	​	​
Sales activity	​	​	​	​	​	​
Boutique Bowling de Mexico S.A. de C.V.	​	$	0.1	​	$	0.1
Empresarios Industriales de Mexico, S.A. de C.V.	​	​	0.2	​	​	0.1
Mextransport	​	​	1.1	​	​	1.2
Operadora de Cinemas S.A. de C.V.	​	​	0.1	​	​	0.1
Total sales	​	$	1.5	​	$	1.5

(*) amount is lower than $0.1 million

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