NVRI

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Represents the target number of Performance Restricted Stock Units granted under the Issuer's 2026 Omnibus Incentive Plan, each of which represents the contingent right to receive a variable amount of shares of the Issuer's common stock based on the level of achievement of share-price performance targets over the period of June 1, 2026, through June 30, 2029 (the "Performance Period"). The Performance Restricted Stock Units vest between 0% and 250% of target, measured as of the earlier of the final financial quarter of the Performance Period or during a measurement period ending no fewer than three days prior to a Change in Control of the Issuer.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Includes 31,830 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Includes 43,517 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests in three equal increments on each subsequent anniversary of the grant date.

Represents the target number of Performance Restricted Stock Units granted under the Issuer's 2026 Omnibus Incentive Plan, each of which represents the contingent right to receive a variable amount of shares of the Issuer's common stock based on the level of achievement of share-price performance targets over the period of June 1, 2026, through June 30, 2029 (the "Performance Period"). The Performance Restricted Stock Units vest between 0% and 250% of target, measured as of the earlier of the final financial quarter of the Performance Period or during a measurement period ending no fewer than three days prior to a Change in Control of the Issuer.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests in three equal increments on each subsequent anniversary of the grant date.

Includes 4,030 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Includes 15,920 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests in three equal increments on each subsequent anniversary of the grant date.

Includes 18,443 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Deferred Stock Units represent deferred cash compensation awarded based on an election by the reporting person in connection with the reporting person's service as a non-employee director of the Issuer. Each Deferred Stock Unit, following vesting, represents the right to receive the value, in cash, of 1 share of the Issuer's common stock at the time of the reporting person's elected distribution date(s). The Deferred Stock Units generally vest in installments at the end of each fiscal quarter in 2026. The reporting person elected to receive settlement and distribution of the Deferred Stock Units in five equal annual installments beginning in 2027.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Includes 15,969 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests in three equal increments on each subsequent anniversary of the grant date.

Includes 22,499 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests in three equal increments on each subsequent anniversary of the grant date.

Represents the target number of Performance Restricted Stock Units granted under the Issuer's 2026 Omnibus Incentive Plan, each of which represents the contingent right to receive a variable amount of shares of the Issuer's common stock based on the level of achievement of share-price performance targets over the period of June 1, 2026, through June 30, 2029 (the "Performance Period"). The Performance Restricted Stock Units vest between 0% and 250% of target, measured as of the earlier of the final financial quarter of the Performance Period or during a measurement period ending no fewer than three days prior to a Change in Control of the Issuer.

Represents the target number of Performance Restricted Stock Units granted under the Issuer's 2026 Omnibus Incentive Plan, each of which represents the contingent right to receive a variable amount of shares of the Issuer's common stock based on the level of achievement of share-price performance targets over the period of June 1, 2026, through June 30, 2029 (the "Performance Period"). The Performance Restricted Stock Units vest between 0% and 250% of target, measured as of the earlier of the final financial quarter of the Performance Period or during a measurement period ending no fewer than three days prior to a Change in Control of the Issuer.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Includes 6,102 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Represents the target number of Performance Restricted Stock Units granted under the Issuer's 2026 Omnibus Incentive Plan, each of which represents the contingent right to receive a variable amount of shares of the Issuer's common stock based on the level of achievement of share-price performance targets over the period of June 1, 2026, through June 30, 2029 (the "Performance Period"). The Performance Restricted Stock Units vest between 0% and 250% of target, measured as of the earlier of the final financial quarter of the Performance Period or during a measurement period ending no fewer than three days prior to a Change in Control of the Issuer.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests in three equal increments on each subsequent anniversary of the grant date.

Includes 24,527 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date.

Includes 13,379 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Represents Stock Appreciation Rights ("SARs") granted under the Issuer's 2026 Omnibus Incentive Plan to replace similar stock appreciation rights held by the reporting period prior to, and canceled in connection with, a reorganization occurring immediately before the spin-off of the Issuer from its predecessor. The SARs are fully vested as of the date hereof.

Includes 8,101 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $18.82 to $19.48, inclusive. The reporting person undertakes to provide to Enviri Corporation, any security holder of Enviri Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (1) to this Form 4.

Includes 92,991 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $18.09 to $18.30, inclusive. The reporting person undertakes to provide to Enviri Corporation, any security holder of Enviri Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (1) to this Form 4.

Includes 33,975 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger).

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environnement S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger)

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger).

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger).

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger).

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environnement S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger).

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.

The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the "Merger Agreement"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri).

On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer

Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger).

In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share.

On June 1, 2026, all the outstanding shares of common stock of Enviri II Corporation were distributed, as a result of the following series of transactions made on that same date: (i) Enviri Corporation merged with and into Enviri LLC, with Enviri LLC surviving, and each outstanding share of common stock of Enviri Corporation exchanged for one share of common stock of CLEH, Inc., and (ii) CLEH, Inc. and its subsidiaries, including Enviri LLC and Enviri II Corporation, effected a reorganization, resulting in (x) Enviri II Corporation owning all of the equity interests of Enviri LLC, (y) Enviri LLC holding the Harsco Environmental and Rail segments of Enviri Corporation, and (z) CLEH, Inc. holding the Clean Earth segment of Enviri Corporation and owning all the outstanding shares of common stock of Enviri II Corporation, which CLEH, Inc. distributed to its stockholders (the former stockholders of Enviri Corporation) on a pro rata basis and for no consideration.

Represents the 1,000 shares initially reported on a Form 3 filed by Enviri Corporation on May 8, 2026, adjusted to reflect the stock split that occurred on May [29], 2026.

Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled.