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RELATED PARTY TRANSACTIONS: (Tables) | 9 Months Ended
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Sep. 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 September 30, | ​ | At December 31,
​ |  | 2025 |  | 2024
Related parties receivable current: | ​ | ​ | ​ | ​ | ​ | ​
Grupo Mexico and affiliates: | ​ | ​ | ​ | ​ | ​ | ​
Asarco LLC | ​ | $ | 6.4 | ​ | $ | 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") | ​ | ​ | 6.3 | ​ | ​ | 5.4
Mexico Compania Constructora S.A de C.V. | ​ | ​ | (*) | ​ | ​ | (*)
​ | ​ | ​ | ​ | ​ | ​ | ​
Related to the controlling group: | ​ | ​ | ​ | ​ | ​ | ​
Empresarios Industriales de Mexico, S.A. de C.V. | ​ | ​ | 1.4 | ​ | ​ | 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
​ | ​ | $ | 14.5 | ​ | $ | 13.5
​ | ​ | ​ | ​ | ​ | ​ | ​
Related parties payable: | ​ | ​ | ​ | ​ | ​ | ​
Grupo Mexico and affiliates: | ​ | ​ | ​ | ​ | ​ | ​
AMMINCO | ​ | $ | 10.3 | ​ | $ | 6.0
Asarco LLC | ​ | ​ | 50.7 | ​ | ​ | 6.0
Eolica El Retiro, S.A.P.I. de C.V. | ​ |  | 1.9 | ​ |  | 0.4
Ferrocarril Mexicano, S.A. de C.V. | ​ |  | 6.2 | ​ |  | 2.9
Grupo Mexico Servicios | ​ | ​ | 5.6 | ​ | ​ | 4.3
MGE | ​ | ​ | 37.4 | ​ | ​ | 15.9
Mexico Compania Constructora S.A de C.V. | ​ | ​ | 9.1 | ​ | ​ | 8.0
Parque Eolico de Fenicias, S. de R.L. de C.V. | ​ | ​ | 7.0 | ​ | ​ | 2.6
Grupo Mexico Servicios de Ingenieria, S.A. de C.V. | ​ | ​ | 2.5 | ​ | ​ | 2.1
Related to the controlling group: | ​ | ​ | ​ | ​ | ​ | ​
Boutique Bowling de Mexico, S.A. de C.V. | ​ |  | 0.4 | ​ |  | 0.5
Mextransport | ​ |  | 0.3 | ​ |  | 0.1
Operadora de Cinemas, S.A. de C.V. | ​ | ​ | 0.2 | ​ | ​ | 0.4
​ | ​ | $ | 131.6 | ​ | $ | 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 nine-month periods ended September 30, 2025 and 2024 (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024
Purchase activity | ​ | ​ | ​ | ​ | ​ | ​
Asarco LLC | ​ | $ | 49.9 | ​ | $ | 3.7
Eolica El Retiro, S.A.P.I. de C.V. | ​ |  | 2.6 | ​ |  | 4.4
Ferrocarril Mexicano, S.A. de C.V. | ​ |  | 35.6 | ​ |  | 37.2
Grupo Mexico Servicios | ​ | ​ | 15.1 | ​ | ​ | 15.1
AMMINCO | ​ | ​ | 7.5 | ​ | ​ | 7.5
MGE | ​ |  | 161.9 | ​ |  | 123.4
Mexico Compania Constructora S.A. de C.V. | ​ | ​ | 36.2 | ​ | ​ | 58.0
Parque Eolico de Fenicias, S. de R.L. de C.V. | ​ | ​ | 30.3 | ​ | ​ | 4.6
Grupo Mexico Servicios de Ingenieria S. A. de C.V. | ​ |  | 11.0 | ​ |  | 13.3
Total purchases | ​ | $ | 350.1 | ​ | $ | 267.2
Sales activity | ​ | ​ | ​ | ​ | ​ | ​
Asarco LLC | ​ | $ | 40.4 | ​ | $ | 27.0
AMMINCO | ​ | ​ | 0.1 | ​ | ​ | 0.1
Ferrocarril Mexicano, S.A. de C.V. | ​ |  | — | ​ |  | (*)
MGE | ​ | ​ | 42.6 | ​ | ​ | 24.0
Total sales | ​ | $ | 83.1 | ​ | $ | 51.1
(*) 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 nine-month periods ended September 30, 2025 and 2024 (in millions):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024
Purchase activity | ​ | ​ | ​ | ​ | ​ | ​
Boutique Bowling de Mexico S.A. de C.V. | ​ | $ | 0.5 | ​ | $ | 0.4
Mextransport | ​ | ​ | 1.8 | ​ | ​ | 2.1
Operadora de Cinemas S.A. de C.V. | ​ | ​ | 0.1 | ​ | ​ | 0.2
Total purchases | ​ | $ | 2.4 | ​ | $ | 2.7
​ | ​ | ​ | ​ | ​ | ​ | ​
Sales activity | ​ | ​ | ​ | ​ | ​ | ​
Boutique Bowling de Mexico S.A. de C.V. | ​ | $ | 0.1 | ​ | $ | 0.1
Empresarios Industriales de Mexico, S.A. de C.V. | ​ | ​ | 0.3 | ​ | ​ | 0.3
Mextransport | ​ | ​ | 1.7 | ​ | ​ | 1.8
Operadora de Cinemas S.A. de C.V. | ​ | ​ | 0.1 | ​ | ​ | 0.1
Total sales | ​ | $ | 2.2 | ​ | $ | 2.3

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