Summit Materials, LLC Contracts & Agreements

Merger Agreement, dated November 24, 2024, among Summit Materials, Inc., Quikrete Holdings, Inc. and Soar Subsidiary, Inc (Filed With SEC on November 25, 2024)

Mining Lease Agreement, dated April 1, 1986, by and between Florida Rock Industries, Inc. and Florida Rock Properties, Inc., as amended (Filed With SEC on May 2, 2024)

Description of Securities of Summit Materials, Inc (Filed With SEC on February 15, 2024)

Restrictive Covenant Agreement, dated as of January 12, 2024, by and among Grupo Argos S.A., Cementos Argos S.A. and Summit Materials, Inc (Filed With SEC on February 12, 2024)

Transition Services Agreement, dated as of January 12, 2024, by and between Cementos Argos S.A. and Summit Materials, Inc (Filed With SEC on February 12, 2024)

Support Services Agreement, dated as of January 12, 2024, by and between Summa Servicios Corporativos Integrales S.A.S. and Summit Materials, Inc (Filed With SEC on February 12, 2024)

Cement Supply Agreement, dated as of January 12, 2024, by and between Zona Franca Argos S.A.S. and Argos USA LLC (Filed With SEC on February 12, 2024)

Intellectual Property License Agreement, dated as of January 12, 2024, by and among Cementos Argos S.A., Summit Materials, Inc. and Argos North America Corp (Filed With SEC on February 12, 2024)

Logistics Service Agreement (Cartagena), dated as of January 12, 2024, by and between Transatlantic Cement Carriers Inc. and Argos USA LLC (Filed With SEC on February 12, 2024)

International Logistics Service Agreement, dated as of January 12, 2024, by and between Transatlantic Cement Carriers Inc. and Argos USA LLC (Filed With SEC on February 12, 2024)

Master Purchase Agreement, dated as of January 12, 2024, by and between Argos USA LLC and CI Del Mar Caribe (BVI) Inc (Filed With SEC on February 12, 2024)

Registration Rights Agreement, dated as of January 12, 2024, by and among Summit Materials, Inc., Cementos Argos S.A., Argos SEM, LLC and Valle Cement Investments, Inc (Filed With SEC on January 12, 2024)

Stockholder Agreement, dated as of January 12, 2024, by and among Summit Materials, Inc., Cementos Argos S.A., Argos SEM, LLC and Valle Cement Investments, Inc. and, solely for... (Filed With SEC on January 12, 2024)

Assignment Agreement, dated as of August 18, 2023, by and among Summit Materials, Inc. and each of the other persons party thereto (Filed With SEC on November 2, 2023)

Amendment, dated as of September 28, 2023, to the Transition and Consulting Agreement, dated as of September 8, 2022, by and among Summit Materials, Inc. and Brian J. Harris (Filed With SEC on November 2, 2023)

Form of Stockholder Agreement, among Summit Materials, Inc., Cementos Argos S.A., Argos SEM, LLC, Valle Cement Investments, Inc., and Grupo Argos S.A. (for the limited purposes... (Filed With SEC on September 13, 2023)

Transaction Agreement, dated September 7, 2023, among Summit Materials, Inc., Argos North America, Corp., Cementos Argos S.A., Argos SEM LLC, Valle Cement Investments, Inc (Filed With SEC on September 8, 2023)

Amendment No. 1 to Tax Receivable Agreement, dated as of May 10, 2023, by and among Summit Materials, Inc. and each of the other persons party thereto (Filed With SEC on August 3, 2023)

Participation Notice and Agreement under Summit Materials, Inc. Executive Severance Plan by and between Summit Materials, Inc. and Scott Anderson (Filed With SEC on May 4, 2023)

Amendment to Participation Notice and Agreement under Summit Materials, Inc. Executive Severance Plan, dated as of March 1, 2023, by and between Summit Materials, Inc. and Anne P.... (Filed With SEC on May 4, 2023)

Description of Registrant's Securities (Filed With SEC on February 16, 2023)

Offer Letter between Summit Materials, Inc. and Kekin Ghelani (Filed With SEC on February 16, 2023)

Description of Registrant's Securities (Filed With SEC on February 24, 2022)

Omnibus Amendment to Participation Notice and Agreements Under the Summit Materials, Inc. Executive Severance Plan (Filed With SEC on August 5, 2021)

Summit Materials, Inc. Executive Severance Plan Form Participation Notice and Agreement (Filed With SEC on August 5, 2021)

Form of Performance Unit Award Notice and Agreement for Executives (Filed With SEC on May 11, 2021)

Form of Restricted Stock Unit Award Notice and Agreement for Executive Officers (Filed With SEC on May 11, 2021)

Form of Restricted Stock Unit Award Notice and Agreement for Directors (Filed With SEC on May 11, 2021)

Form of Restricted Stock Unit Award Notice and Agreement (Filed With SEC on October 28, 2020)

Form of Performance Unit Award Notice and Agreement (Filed With SEC on October 28, 2020)

Thirteenth Supplemental Indenture, dated as of May 3, 2018, among Laredo Paving, Inc., Metro Ready Mix, L.L.C., Price Construction, Ltd. and Mid-Missouri Limestone, LLC and... (Filed With SEC on August 2, 2018)

Ninth Supplemental Indenture, dated as of May 3, 2018, among Laredo Paving, Inc., Metro Ready Mix, L.L.C., Price Construction, Ltd. and Mid-Missouri Limestone, LLC and Wilmington... (Filed With SEC on August 2, 2018)

Fifth Supplemental Indenture, dated as of May 3, 2018, among Laredo Paving, Inc., Metro Ready Mix, L.L.C., Price Construction, Ltd. and Mid-Missouri Limestone, LLC and Wilmington... (Filed With SEC on August 2, 2018)

Amendment No. 3, dated as of May 22, 2018, to the Amended and Restated Credit Agreement, dated as of July 17, 2015 (as amended by Amendment No. 1, dated as of January 19, 2017 and... (Filed With SEC on May 22, 2018)

Tenth Supplemental Indenture, dated as of September 6, 2017, among Ready Mix Concrete of Somerset, LLC and Alan Ritchey Materials Company, L.C. and Wilmington Trust, National... (Filed With SEC on February 14, 2018)

Eleventh Supplemental Indenture, dated as of November 10, 2017, among Columbia Silica Sand, LLC, Columbia Aggregates, LLC, Northwest Aggregates, Inc. and Northwest Ready Mix, Inc.... (Filed With SEC on February 14, 2018)

Twelfth Supplemental Indenture, dated as of January 26, 2018, among Georgia Stone Products, LLC, Broad River Crushed Stone, LLC, Stockman Quarry, L.L.C., Stockman Properties,... (Filed With SEC on February 14, 2018)

Sixth Supplemental Indenture, dated as of September 6, 2017, among Ready Mix Concrete of Somerset, LLC and Alan Ritchey Materials Company, L.C. and Wilmington Trust, National... (Filed With SEC on February 14, 2018)

Seventh Supplemental Indenture, dated as of November 10, 2017, among Columbia Silica Sand, LLC, Columbia Aggregates, LLC, Northwest Aggregates, Inc. and Northwest Ready Mix, Inc.... (Filed With SEC on February 14, 2018)

Eighth Supplemental Indenture, dated as of January 26, 2018, among Georgia Stone Products, LLC, Broad River Crushed Stone, LLC, Stockman Quarry, L.L.C., Stockman Properties,... (Filed With SEC on February 14, 2018)

Second Supplemental Indenture, dated as of September 6, 2017, among Ready Mix Concrete of Somerset, LLC and Alan Ritchey Materials Company, L.C. and Wilmington Trust, National... (Filed With SEC on February 14, 2018)

Third Supplemental Indenture, dated as of November 10, 2017, among Columbia Silica Sand, LLC, Columbia Aggregates, LLC, Northwest Aggregates, Inc. and Northwest Ready Mix, Inc.... (Filed With SEC on February 14, 2018)

Fourth Supplemental Indenture, dated as of January 26, 2018, among Georgia Stone Products, LLC, Broad River Crushed Stone, LLC, Stockman Quarry, L.L.C., Stockman Properties,... (Filed With SEC on February 14, 2018)

Agreement and Release, dated as of January 17, 2018, between Damian J. Murphy, Summit Materials Holdings L.P., and solely for certain purposes specified therein, Summit Materials,... (Filed With SEC on February 14, 2018)

FIRST SUPPLEMENTAL INDENTURE (Filed With SEC on August 4, 2017)

FIFTH SUPPLEMENTAL INDENTURE (Filed With SEC on August 4, 2017)

NINTH Supplemental Indenture (Filed With SEC on August 4, 2017)

FOURTH SUPPLEMENTAL INDENTURE (Filed With SEC on May 3, 2017)

EIGHTH Supplemental Indenture (Filed With SEC on May 3, 2017)

THIRD SUPPLEMENTAL INDENTURE (Filed With SEC on November 3, 2016)

SEVENTH Supplemental Indenture (Filed With SEC on November 3, 2016)

SECOND SUPPLEMENTAL INDENTURE (Filed With SEC on August 10, 2016)

SIXTH Supplemental Indenture (Filed With SEC on August 10, 2016)

FIRST SUPPLEMENTAL INDENTURE (Filed With SEC on May 4, 2016)

FIFTH Supplemental Indenture (Filed With SEC on May 4, 2016)

RESTRICTED STOCK UNIT AWARD NOTICE UNDER THE SUMMIT MATERIALS, INC. 2015 OMNIBUS INCENTIVE PLAN (Filed With SEC on May 4, 2016)

NONQUALIFIED STOCK OPTION AWARD NOTICE UNDER THE SUMMIT MATERIALS, INC. 2015 OMNIBUS INCENTIVE PLAN (Filed With SEC on May 4, 2016)

PERFORMANCE UNIT AWARD NOTICE UNDER THE SUMMIT MATERIALS, INC. 2015 OMNIBUS INCENTIVE PLAN (Filed With SEC on May 4, 2016)

INDENTURE Dated as ofMarch 8, 2016 Among SUMMIT MATERIALS, LLC, as the Issuer, SUMMIT MATERIALS FINANCE CORP., as the Co-Issuer, the Guarantors named herein and WILMINGTON TRUST,... (Filed With SEC on March 8, 2016)

SUMMIT MATERIALS, LLC SUMMIT MATERIALS FINANCE CORP. $250,000,000 8.500% Senior Notes due 2022 REGISTRATION RIGHTS AGREEMENT dated March 8, 2016 TABLE OF CONTENTS (Filed With SEC on March 8, 2016)

FOURTH SUPPLEMENTAL INDENTURE (Filed With SEC on February 22, 2016)

Summit Materials, LLC 2900 K Street, NW #150 Harbourside Building, North Tower Washington, DC 20007 P: 202 ###-###-#### F: 202 ###-###-#### (Filed With SEC on February 22, 2016)

THIRD SUPPLEMENTAL INDENTURE (Filed With SEC on November 19, 2015)

SUMMIT MATERIALS, LLC SUMMIT MATERIALS FINANCE CORP. $300,000,000 6.125% Senior Notes due 2023 REGISTRATION RIGHTS AGREEMENT dated November 19, 2015 TABLE OF CONTENTS (Filed With SEC on November 19, 2015)

AMENDMENT NO. 1 TO EXCHANGE AGREEMENT (Filed With SEC on November 3, 2015)

AMENDMENT NO. 1 TO STOCKHOLDERS AGREEMENT (Filed With SEC on November 3, 2015)

INDENTURE Dated as ofJuly 8, 2015 Among SUMMIT MATERIALS, LLC, as the Issuer, SUMMIT MATERIALS FINANCE CORP., as the Co-Issuer, the Guarantors named herein and WILMINGTON TRUST,... (Filed With SEC on July 8, 2015)

SUMMIT MATERIALS, LLC SUMMIT MATERIALS FINANCE CORP. $350,000,000 6.125% Senior Notes due 2023 REGISTRATION RIGHTS AGREEMENT dated July 8, 2015 TABLE OF CONTENTS (Filed With SEC on July 8, 2015)

ASSET PURCHASE AGREEMENT dated as of April 16, 2015 among CONTINENTAL CEMENTCOMPANY, L.L.C., as the Purchaser, LAFARGE NORTH AMERICA INC., asthe Seller and SUMMITMATERIALS, LLC,... (Filed With SEC on April 17, 2015)

ASSET PURCHASE AGREEMENT dated as of April 16, 2015 among LAFARGE NORTH AMERICAINC., as the Purchaser, and CONTINENTAL CEMENT COMPANY, L.L.C. as the Seller and SUMMIT MATERIALS,... (Filed With SEC on April 17, 2015)

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FIFTHSUPPLEMENTAL INDENTURE (Filed With SEC on September 9, 2014)

SUMMIT MATERIALS, LLC SUMMIT MATERIALS FINANCE CORP. $115,000,000 10 1D2% Senior Notes due 2020 REGISTRATION RIGHTS AGREEMENT dated September 8, 2014 TABLE OF CONTENTS (Filed With SEC on September 9, 2014)

FOURTHSUPPLEMENTAL INDENTURE (Filed With SEC on August 6, 2014)

THIRD SUPPLEMENTAL INDENTURE (Filed With SEC on March 7, 2014)

ACQUISITION AGREEMENT Among ALLEYTON RESOURCE CORPORATION, COLORADO GULF, LP, TEXAS CGC, LLC, BARTEN SHEPARD INVESTMENTS, LP, TBGSI CORP., THE INDIVIDUALS SIGNATORY HERETO and... (Filed With SEC on March 7, 2014)

AMENDMENT TO ACQUISITION AGREEMENT (Filed With SEC on March 7, 2014)

MANAGEMENT INTEREST SUBSCRIPTION AGREEMENT (Profits Interest Grant) (Filed With SEC on March 7, 2014)

EMPLOYMENT AGREEMENT KEVIN GILL (Filed With SEC on March 7, 2014)

SUMMIT MATERIALS, LLC SUMMIT MATERIALS FINANCE CORP. $260,000,000 10.5% Senior Notes due 2020 REGISTRATION RIGHTS AGREEMENT dated January 17, 2014 TABLE OF CONTENTS (Filed With SEC on January 23, 2014)

EMPLOYMENT AGREEMENT BRIAN HARRIS (Filed With SEC on December 4, 2013)

AGREEMENT AND RELEASE (Filed With SEC on November 6, 2013)

Compensation Arrangement between Summit Materials Holdings L.P. and John Murphy, Interim Chief Financial Officer (Filed With SEC on November 6, 2013)

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Summit Materials, LLC Contracts & Agreements