KWR · Quaker Chemical Corp · Insider Trading

QH Hungary Holdings Limited ("QH Hungary") is a wholly owned subsidiary of the Reporting Person. On August 20, 2026, 5,017 shares of Common Stock of the Issuer ("Shares") beneficially owned by the Reporting Person but held in the name of Citibank N.A., pursuant to an escrow agreement in order to secure the Reporting Person's indemnification obligations related to the Issuer's acquisition of Global Houghton Ltd., were released from escrow to the Issuer in order to satisfy such indemnification obligations and 3,905 Shares were released from escrow to the Reporting Person as such Shares were no longer needed to secure indemnification obligations.

Following such escrow release, the Reporting Person continues to (i) directly beneficially own 3,905 Shares and (ii) indirectly beneficially own 3,635,112 Shares, which are owned by QH Hungary, for a total direct and indirect beneficial ownership of 3,639,017 Shares by the Reporting Person.

Certain shares beneficially owned by reporting person were escrowed to secure sellers' indemnification obligations related to the Issuer's acquisition of Global Houghton Ltd. The shares reported were forfeited in connection with the resolution of remaining indemnification claims and release of the escrow.

Reported price is the volume-weighted average price used in calculations made under the escrow agreement.

Dividend equivalent rights (DERs) accrued on reporting person's RSUs granted on June 15, 2024. The rights accrued when and as dividends were paid on KWR common stock. This Form 4 reports the settlement of DERs in connection with the vesting of RSUs on June 15, 2026. Each DER was the economic equivalent of one share of KWR common stock.

Shares surrendered by reporting person to satisfy withholding tax obligation upon vesting of restricted stock units previously granted under the Company's Long-Term Performance Incentive Plan.

Restricted stock units (RSUs) convert into common stock on a one-for-one basis.

On June 15, 2024, the reporting person was granted 2,352 time-based RSUs, vesting 100% on June 15, 2026.

Dividend equivalent rights (DERs) accrued on reporting person's RSUs granted on June 15, 2024. The rights accrued when and as dividends were paid on KWR common stock. This Form 4 reports the settlement of DERs in connection with the vesting of RSUs on June 15, 2026. Each DER was the economic equivalent of one share of KWR common stock.

Restricted stock units (RSUs) convert into common stock on a one-for-one basis.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid to KWR's common stock.

Grant of stock by the Company to provide full payment of the annual chairperson retainer (having a value of $110,000) for the 2026-2027 Board year. Award is fully vested as of the date of grant.

Reflects 75% of the Director's annual retainer paid in shares pursuant to the 2023 Director Stock Ownership Plan.

Reflects 75% of the Director's annual retainer paid in shares pursuant to the 2023 Director Stock Ownership Plan.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Reflects 75% of the Director's annual retainer paid in shares pursuant to the 2023 Director Stock Ownership Plan.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.

Shares surrendered by reporting person to satisfy statutory withholding tax obligation in connection with shares issued on June 1, 2026 under the Director Stock Ownership Plan.

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid to KWR's common stock.

Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Restricted stock units convert into common stock on a one-for-one basis.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Shares surrendered by reporting person to satisfy statutory withholding tax obligation upon vesting of restricted stock units previously granted on June 1, 2025 under the Company's Long-Term Performance Incentive Plan.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Restricted stock units convert into common stock on a one-for-one basis.

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Restricted stock units convert into common stock on a one-for-one basis.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units convert into common stock on a one-for-one basis.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Restricted stock units convert into common stock on a one-for-one basis.

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.