MTZ

SEC source: 0000899243-23-001705 · doc4.xml · derivative · entry 1

MAS JOSE RAMON · CIK 0001079760 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 775,000

Underlying: Common Stock · 775,000 shares

Expires not disclosed

F1 · derivative.exercise_price: As previously reported, on November 19, 2019, the reporting person and the Jose Ramon Mas Irrevocable Family Trust, one of the trustees of which is the reporting person's spouse (the "JR Trust"), entered into prepaid variable forward sale contracts (the "2019 Forward Sale Contracts") with an unaffiliated third party buyer. The reporting person pledged an aggregate of 775,000 shares and the JR Trust pledged an aggregate of 212,500 shares (the " Initially Pledged Shares") of MasTec, Inc. common stock to secure their obligations under the contracts, and retained ownership and voting rights in their respective portions of the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contracts were amended, effectively eliminating any obligation of the JR Trust to deliver Initial Pledged Shares and reducing the reporting person's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (defined below)

F2 · derivative.exercise_price: On November 28, 2022, (i) the JR Trust and the buyer entered into an agreement to terminate the 2019 Forward Sale Contract to which it was a party with respect to all 212,500 shares covered thereby, with the JR Trust retaining ownership of all such shares, and (ii) the reporting person and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to which the reporting person is a party to reduce the number of shares covered thereby to 387,500 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at the reporting person's option, in cash or shares of MasTec, Inc. common stock.

F3 · derivative.exercise_price: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date) is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), the reporting person will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · derivative.exercise_price: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the " Tranche 1 Cap Price") in the case of a component in Tranche 1, or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, the reporting person will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · derivative.exercise_price: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, the reporting person will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F1 · kind: As previously reported, on November 19, 2019, the reporting person and the Jose Ramon Mas Irrevocable Family Trust, one of the trustees of which is the reporting person's spouse (the "JR Trust"), entered into prepaid variable forward sale contracts (the "2019 Forward Sale Contracts") with an unaffiliated third party buyer. The reporting person pledged an aggregate of 775,000 shares and the JR Trust pledged an aggregate of 212,500 shares (the " Initially Pledged Shares") of MasTec, Inc. common stock to secure their obligations under the contracts, and retained ownership and voting rights in their respective portions of the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contracts were amended, effectively eliminating any obligation of the JR Trust to deliver Initial Pledged Shares and reducing the reporting person's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (defined below)

F2 · kind: On November 28, 2022, (i) the JR Trust and the buyer entered into an agreement to terminate the 2019 Forward Sale Contract to which it was a party with respect to all 212,500 shares covered thereby, with the JR Trust retaining ownership of all such shares, and (ii) the reporting person and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to which the reporting person is a party to reduce the number of shares covered thereby to 387,500 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at the reporting person's option, in cash or shares of MasTec, Inc. common stock.

F3 · kind: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date) is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), the reporting person will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · kind: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the " Tranche 1 Cap Price") in the case of a component in Tranche 1, or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, the reporting person will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · kind: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, the reporting person will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F1 · price: As previously reported, on November 19, 2019, the reporting person and the Jose Ramon Mas Irrevocable Family Trust, one of the trustees of which is the reporting person's spouse (the "JR Trust"), entered into prepaid variable forward sale contracts (the "2019 Forward Sale Contracts") with an unaffiliated third party buyer. The reporting person pledged an aggregate of 775,000 shares and the JR Trust pledged an aggregate of 212,500 shares (the " Initially Pledged Shares") of MasTec, Inc. common stock to secure their obligations under the contracts, and retained ownership and voting rights in their respective portions of the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contracts were amended, effectively eliminating any obligation of the JR Trust to deliver Initial Pledged Shares and reducing the reporting person's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (defined below)

F2 · price: On November 28, 2022, (i) the JR Trust and the buyer entered into an agreement to terminate the 2019 Forward Sale Contract to which it was a party with respect to all 212,500 shares covered thereby, with the JR Trust retaining ownership of all such shares, and (ii) the reporting person and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to which the reporting person is a party to reduce the number of shares covered thereby to 387,500 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at the reporting person's option, in cash or shares of MasTec, Inc. common stock.

F3 · price: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date) is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), the reporting person will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · price: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the " Tranche 1 Cap Price") in the case of a component in Tranche 1, or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, the reporting person will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · price: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, the reporting person will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F6 · derivative.exercise_date: Each component is exercisable on the same date as it expires, which date for each component, occurs between August 19, 2024 and September 8, 2025.

F6 · derivative.expiration_date: Each component is exercisable on the same date as it expires, which date for each component, occurs between August 19, 2024 and September 8, 2025.

SEC source: 0000899243-23-001704 · doc4.xml · derivative · entry 2

MAS JORGE · CIK 0000920559 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,250,000

Underlying: Common Stock · 1,250,000 shares

Expires not disclosed

F1 · derivative.exercise_price: As previously reported, on November 19, 2019, Jorge Mas Holdings I, LLC, a Florida limited liability company ("JM Holdings I"), which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member, entered into a prepaid variable forward sale contract (the "2019 Forward Sale Contract") with an unaffiliated third party buyer. JM Holdings I pledged an aggregate of 2,500,000 shares (the "Initially Pledged Shares") of MasTec, Inc. common stock to secure its obligations under the contract, and retained ownership and voting rights in the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contract was amended, reducing JM Holdings I's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (as defined below).

F2 · derivative.exercise_price: On November 28, 2022, JM Holdings I and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to reduce the number of shares covered thereby to 1,250,000 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at JM Holdings I's option, in cash or shares of MasTec, Inc. common stock.

F3 · derivative.exercise_price: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date), is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), JM Holdings I will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · derivative.exercise_price: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the "Tranche 1 Cap Price") in the case of a component in Tranche 1 or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · derivative.exercise_price: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F1 · kind: As previously reported, on November 19, 2019, Jorge Mas Holdings I, LLC, a Florida limited liability company ("JM Holdings I"), which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member, entered into a prepaid variable forward sale contract (the "2019 Forward Sale Contract") with an unaffiliated third party buyer. JM Holdings I pledged an aggregate of 2,500,000 shares (the "Initially Pledged Shares") of MasTec, Inc. common stock to secure its obligations under the contract, and retained ownership and voting rights in the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contract was amended, reducing JM Holdings I's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (as defined below).

F2 · kind: On November 28, 2022, JM Holdings I and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to reduce the number of shares covered thereby to 1,250,000 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at JM Holdings I's option, in cash or shares of MasTec, Inc. common stock.

F3 · kind: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date), is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), JM Holdings I will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · kind: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the "Tranche 1 Cap Price") in the case of a component in Tranche 1 or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · kind: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F1 · price: As previously reported, on November 19, 2019, Jorge Mas Holdings I, LLC, a Florida limited liability company ("JM Holdings I"), which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member, entered into a prepaid variable forward sale contract (the "2019 Forward Sale Contract") with an unaffiliated third party buyer. JM Holdings I pledged an aggregate of 2,500,000 shares (the "Initially Pledged Shares") of MasTec, Inc. common stock to secure its obligations under the contract, and retained ownership and voting rights in the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contract was amended, reducing JM Holdings I's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (as defined below).

F2 · price: On November 28, 2022, JM Holdings I and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to reduce the number of shares covered thereby to 1,250,000 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at JM Holdings I's option, in cash or shares of MasTec, Inc. common stock.

F3 · price: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date), is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), JM Holdings I will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · price: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the "Tranche 1 Cap Price") in the case of a component in Tranche 1 or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · price: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F6 · derivative.exercise_date: Each component is exercisable on the same date as it expires, which date for each component, occurs between August 19, 2024 to September 8, 2025.

F6 · derivative.expiration_date: Each component is exercisable on the same date as it expires, which date for each component, occurs between August 19, 2024 to September 8, 2025.

F7 · ownership.nature: Shares owned of record by JM Holdings I.

SEC source: 0000899243-23-001704 · doc4.xml · derivative · entry 1

MAS JORGE · CIK 0000920559 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 2,500,000 shares

Expires not disclosed

F1 · derivative.exercise_price: As previously reported, on November 19, 2019, Jorge Mas Holdings I, LLC, a Florida limited liability company ("JM Holdings I"), which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member, entered into a prepaid variable forward sale contract (the "2019 Forward Sale Contract") with an unaffiliated third party buyer. JM Holdings I pledged an aggregate of 2,500,000 shares (the "Initially Pledged Shares") of MasTec, Inc. common stock to secure its obligations under the contract, and retained ownership and voting rights in the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contract was amended, reducing JM Holdings I's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (as defined below).

F2 · derivative.exercise_price: On November 28, 2022, JM Holdings I and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to reduce the number of shares covered thereby to 1,250,000 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at JM Holdings I's option, in cash or shares of MasTec, Inc. common stock.

F3 · derivative.exercise_price: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date), is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), JM Holdings I will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · derivative.exercise_price: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the "Tranche 1 Cap Price") in the case of a component in Tranche 1 or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · derivative.exercise_price: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F1 · kind: As previously reported, on November 19, 2019, Jorge Mas Holdings I, LLC, a Florida limited liability company ("JM Holdings I"), which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member, entered into a prepaid variable forward sale contract (the "2019 Forward Sale Contract") with an unaffiliated third party buyer. JM Holdings I pledged an aggregate of 2,500,000 shares (the "Initially Pledged Shares") of MasTec, Inc. common stock to secure its obligations under the contract, and retained ownership and voting rights in the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contract was amended, reducing JM Holdings I's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (as defined below).

F2 · kind: On November 28, 2022, JM Holdings I and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to reduce the number of shares covered thereby to 1,250,000 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at JM Holdings I's option, in cash or shares of MasTec, Inc. common stock.

F3 · kind: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date), is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), JM Holdings I will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · kind: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the "Tranche 1 Cap Price") in the case of a component in Tranche 1 or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · kind: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F1 · price: As previously reported, on November 19, 2019, Jorge Mas Holdings I, LLC, a Florida limited liability company ("JM Holdings I"), which is controlled by Jorge Mas Holdings, LLC, a Florida limited liability company, of which the reporting person is the sole member, entered into a prepaid variable forward sale contract (the "2019 Forward Sale Contract") with an unaffiliated third party buyer. JM Holdings I pledged an aggregate of 2,500,000 shares (the "Initially Pledged Shares") of MasTec, Inc. common stock to secure its obligations under the contract, and retained ownership and voting rights in the Initially Pledged Shares during the term of the pledge. As more fully described below, the 2019 Forward Sale Contract was amended, reducing JM Holdings I's obligation to deliver shares of MasTec common stock to the amount of the Current Pledged Shares (as defined below).

F2 · price: On November 28, 2022, JM Holdings I and the buyer entered into an amendment to the 2019 Forward Sale Contract (the "Amended Agreement") to reduce the number of shares covered thereby to 1,250,000 shares (the "Current Pledged Shares") of MasTec, Inc. common stock and to amend the Floor Price (as defined below) and the Cap Price (as defined below), which were determined based on the volume weighted average price of MasTec Inc.'s common stock for a specified period ended on January 10, 2023. The Amended Agreement provides for the settlement of the transaction, at JM Holdings I's option, in cash or shares of MasTec, Inc. common stock.

F3 · price: (Continued from Footnote 2) Current Pledged Shares are divided into thirty components split into two tranches (each, a "Tranche") of fifteen components each. The number of shares of MasTec, Inc. common stock to be potentially delivered to the buyer on the settlement date of each component in the first ("Tranche 1") or second ("Tranche 2") Tranche, as applicable (or on which to base the amount of cash to be delivered to the buyer on such settlement date), is to be determined as follows: (a) if the volume-weighted average price of MasTec, Inc. common stock on the designated valuation date for the applicable component (each, a "Settlement Price") is less than or equal to $78.5147 (the "Floor Price"), JM Holdings I will deliver to the buyer all of the Current Pledged Shares for the applicable component;

F4 · price: (Continued from Footnote 3) (b) if such Settlement Price is greater than the Floor Price but less than or equal to $124.7512 (the "Tranche 1 Cap Price") in the case of a component in Tranche 1 or $136.9646 (the "Tranche 2 Cap Price," and each of the Tranche 1 Cap Price and Tranche 2 Cap Price, a "Cap Price") in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of the Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is such Settlement Price; and

F5 · price: (Continued from Footnote 4) (c) if such Settlement Price is greater than the Tranche 1 Cap Price in the case of a component in Tranche 1 or greater than the Tranche 2 Cap Price in the case of a component in Tranche 2, JM Holdings I will deliver to the buyer the number of shares equal to one hundred percent (100%) of Current Pledged Shares for the applicable component multiplied by a fraction, the numerator of which is the Floor Price plus the excess of such Settlement Price over the applicable Cap Price, and the denominator of which is such Settlement Price.

F6 · derivative.exercise_date: Each component is exercisable on the same date as it expires, which date for each component, occurs between August 19, 2024 to September 8, 2025.

F6 · derivative.expiration_date: Each component is exercisable on the same date as it expires, which date for each component, occurs between August 19, 2024 to September 8, 2025.

F7 · ownership.nature: Shares owned of record by JM Holdings I.

SEC source: 0001209191-22-057582 · doc4.xml · nonDerivative · entry 2

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,083

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-057582 · doc4.xml · nonDerivative · entry 1

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,179

SEC source: 0001209191-22-057581 · doc4.xml · nonDerivative · entry 1

JOHNSON JULIA L · CIK 0001221442 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,494

SEC source: 0001209191-22-057579 · doc4.xml · nonDerivative · entry 2

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,547

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-057579 · doc4.xml · nonDerivative · entry 1

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,643

SEC source: 0001209191-22-057574 · doc4.xml · nonDerivative · entry 2

Parker Ava L · CIK 0001526207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,036

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-057574 · doc4.xml · nonDerivative · entry 1

Parker Ava L · CIK 0001526207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,132

SEC source: 0001209191-22-057569 · doc4.xml · nonDerivative · entry 1

Campbell C Robert · CIK 0001307261 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,339

SEC source: 0001209191-22-057565 · doc4.xml · nonDerivative · entry 2

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,855

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-057565 · doc4.xml · nonDerivative · entry 1

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,969

SEC source: 0001209191-22-046366 · doc4.xml · nonDerivative · entry 2

Parker Ava L · CIK 0001526207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 698

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-046366 · doc4.xml · nonDerivative · entry 1

Parker Ava L · CIK 0001526207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 805

SEC source: 0001209191-22-046354 · doc4.xml · nonDerivative · entry 1

Campbell C Robert · CIK 0001307261 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,833

SEC source: 0001209191-22-046329 · doc4.xml · nonDerivative · entry 2

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,209

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-046329 · doc4.xml · nonDerivative · entry 1

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,316

SEC source: 0001209191-22-046305 · doc4.xml · nonDerivative · entry 1

JOHNSON JULIA L · CIK 0001221442 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,060

SEC source: 0001209191-22-046298 · doc4.xml · nonDerivative · entry 2

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,745

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-046298 · doc4.xml · nonDerivative · entry 1

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,852

SEC source: 0001209191-22-046290 · doc4.xml · nonDerivative · entry 2

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,455

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-046290 · doc4.xml · nonDerivative · entry 1

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,582

SEC source: 0001209191-22-029815 · doc4.xml · nonDerivative · entry 2

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,006

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-029815 · doc4.xml · nonDerivative · entry 1

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,097

SEC source: 0001209191-22-029827 · doc4.xml · nonDerivative · entry 2

Parker Ava L · CIK 0001526207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 320

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-029827 · doc4.xml · nonDerivative · entry 1

Parker Ava L · CIK 0001526207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 411

SEC source: 0001209191-22-029824 · doc4.xml · nonDerivative · entry 2

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,831

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-029824 · doc4.xml · nonDerivative · entry 1

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,922

SEC source: 0001209191-22-029818 · doc4.xml · nonDerivative · entry 1

JOHNSON JULIA L · CIK 0001221442 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,575

SEC source: 0001209191-22-029817 · doc4.xml · nonDerivative · entry 2

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,367

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-029817 · doc4.xml · nonDerivative · entry 1

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,458

SEC source: 0001209191-22-029814 · doc4.xml · nonDerivative · entry 1

Campbell C Robert · CIK 0001307261 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,266

SEC source: 0001209191-22-021383 · doc4.xml · nonDerivative · entry 1

MAS JORGE · CIK 0000920559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,009,755

SEC source: 0001209191-22-021338 · doc4.xml · nonDerivative · entry 1

Apple Robert E · CIK 0001382697 · COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,082

F1 · balance_after: Includes 80,426 shares of MasTec common stock contributed by the reporting person to The Apple Family Trust of which the reporting person and his wife are trustees and beneficiaries.

SEC source: 0001209191-22-021351 · doc4.xml · nonDerivative · entry 1

MAS JOSE RAMON · CIK 0001079760 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,231,830

SEC source: 0001209191-22-021341 · doc4.xml · nonDerivative · entry 1

de Cardenas Alberto · CIK 0001250037 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,870

SEC source: 0001209191-22-021336 · doc4.xml · nonDerivative · entry 1

Pita George · CIK 0001293639 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,379

SEC source: 0001209191-22-019260 · doc4.xml · nonDerivative · entry 1

MAS JOSE RAMON · CIK 0001079760 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,168,553

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-019253 · doc4.xml · nonDerivative · entry 1

de Cardenas Alberto · CIK 0001250037 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,365

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-019234 · doc4.xml · nonDerivative · entry 1

Pita George · CIK 0001293639 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 127,219

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-019247 · doc4.xml · nonDerivative · entry 1

Apple Robert E · CIK 0001382697 · COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 171,320

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

F2 · balance_after: Includes 59,993 shares of MasTec common stock contributed by the reporting person to The Apple Family Trust of which the reporting person and his wife are trustees and beneficiaries.

SEC source: 0001209191-22-011019 · doc4.xml · nonDerivative · entry 2

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,574

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-011019 · doc4.xml · nonDerivative · entry 1

Palomarez Javier Alberto · CIK 0001662017 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,650

SEC source: 0001209191-22-010778 · doc4.xml · nonDerivative · entry 1

Campbell C Robert · CIK 0001307261 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,855

SEC source: 0001209191-22-010765 · doc4.xml · nonDerivative · entry 1

JOHNSON JULIA L · CIK 0001221442 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,140

SEC source: 0001209191-22-010751 · doc4.xml · nonDerivative · entry 2

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,047

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-010751 · doc4.xml · nonDerivative · entry 1

Dwyer Robert J · CIK 0001307141 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,123

SEC source: 0001209191-22-010738 · doc4.xml · nonDerivative · entry 2

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,686

F1 · shares: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

SEC source: 0001209191-22-010738 · doc4.xml · nonDerivative · entry 1

Csiszar Ernst N · CIK 0001341639 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,762