Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 57

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 57
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 is computed using the closing stock price as of December 31, 2024, the last trading day of 2024, of $230.14.

(2) Represents an annual grant of time-vesting shares that vest 60% on the third anniversary of the grant date and 20% on each of the fourth and fifth anniversaries of the grant date.

(3) Represents shares earned under performance-based awards that vest ratably on July 1, 2025 and July 1, 2026.

(4) Represents shares earned under performance-based awards that vest ratably on March 15, 2025, March 15, 2026, and March 15, 2027.

(5) Represents an annual grant of time-vesting shares that vest 20% per year on each anniversary of the grant date starting with the first anniversary.

(6) Represent shares earned under performance-based awards that vest ratably on March 15, 2025, March 15, 2026, March 15, 2027, and March 15, 2028.

(7) Represent shares earned under performance-based awards that vest ratably on March 15, 2025, March 15, 2026, March 15, 2027, March 15, 2028, and March 15, 2029.

(8) Represents 2024 performance-based awards for which the performance criteria have not been achieved at the threshold level of achievement.

(9) Represents an annual grant of time-vesting shares that vests ratably on the anniversary of the grant date over three years.

(10) Represents a grant of time-vesting shares vesting ratably on the anniversary of the grant date over three years.

#### Option Exercises and Stock Vested
The Company has not granted any stock options to its NEOs for more than ten years. The following table shows for each NEO the aggregate number of restricted shares that vested during 2024, including time-based shares and performance-based shares, and the value of those shares upon vesting based on the closing price of the Company's common stock on the vesting date. The low and high closing prices of the Company's common stock in 2024 were $162.06 and $263.39, respectively. The closing price on December 31, 2024, the last trading day of 2024, was $230.14.

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