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Quaker Chemical Corp director Mark Douglas reported equity awards and vesting-related exercises. On June 1, 2026, he received a grant of 766 shares of common stock as full payment of the annual chairperson retainer valued at $110,000, which was fully vested at grant. He was also granted 975 restricted stock units as part of 2026 compensation for non-management directors, each representing a contingent right to one common share that vests 100% on May 31, 2027. On May 31, 2026, previously granted time-based RSUs from a 2025 award and associated dividend equivalent rights vested and were exercised, converting 1,198 RSUs and 18 dividend equivalent rights into 1,216 shares of common stock. Following these transactions, Douglas directly holds 6,278 shares of common stock and 975 restricted stock units.
Quaker Chemical director Fay West reported routine equity compensation activity. On June 1, 2026, West received a grant of 975 time-based restricted stock units as part of 2026 compensation, each representing one future share of KWR common stock, vesting 100% on May 31, 2027.
West also exercised previously granted restricted stock units and related dividend equivalent rights that vested on May 31, 2026, converting a total of 1,216 rights into common shares at no cash exercise price. In addition, 2,492 common shares are reported as held indirectly through The Douglas West Revocable Trust.
Quaker Chemical Corp director Russell Shaller reported equity compensation activity and vesting of prior awards. On June 1, 2026, he received a grant of 413 shares of common stock at $145.24 per share, reflecting 75% of his annual director retainer paid in stock. He was also granted 975 restricted stock units (RSUs) as part of his 2026 compensation, each representing a contingent right to one share of common stock and scheduled to vest 100% on May 31, 2027.
On May 31, 2026, time-based RSUs granted on June 1, 2025 vested in full, and related dividend equivalent rights were settled, resulting in a total of 1,216 common shares issued through derivative exercises. Following these transactions, Shaller directly owns 4,045 shares of common stock and holds 975 RSUs outstanding.
Quaker Chemical Corp director William H. Osborne reported routine equity compensation and vesting activity. On June 1, 2026, he received 975 restricted stock units, granted under the company’s Long-Term Performance Incentive Plan as part of 2026 compensation. Each unit represents a contingent right to one share of KWR common stock and is scheduled to vest 100% on May 31, 2027, with dividend equivalent rights accruing as dividends are paid.
Separately, time-based restricted stock units granted on June 1, 2025 vested 100% on May 31, 2026, converting into 1,198 common shares plus 18 shares from dividend equivalent rights, all at a stated price of $0.00 per share. Following these transactions, Osborne holds 1,216 common shares directly and 6,285 common shares indirectly through a revocable trust. The filing shows no open‑market buys or sales, only grants and derivative exercises.
QUAKER CHEMICAL CORP director Sanjay Hinduja reported compensation-related equity awards and vesting activity. On June 1, 2026, he received 975 restricted stock units (RSUs) as part of 2026 compensation under the Long-Term Performance Incentive Plan. These RSUs convert into common stock on a one-for-one basis and vest 100% on May 31, 2027, with dividend equivalent rights accruing as dividends are paid.
Previously granted time-based RSUs from June 1, 2025 vested in full on May 31, 2026, leading to the exercise of 1,198 RSUs and 18 dividend equivalent rights into the same number of common shares at no cash cost. Following these transactions, Hinduja directly holds 5,193 shares of common stock and 975 unvested RSUs. All reported transactions are acquisitions or conversions rather than market purchases or sales.
Quaker Chemical Corp director Charlotte C. Henry reported equity-based compensation and related exercises. On June 1, 2026 she received 975 restricted stock units under Quaker Houghton's Long-Term Performance Incentive Plan as part of her 2026 compensation. These units vest 100% on May 31, 2027 and accrue dividend equivalent rights when dividends are paid.
On May 31, 2026 she exercised 1,198 time-based restricted stock units that had vested and 18 dividend equivalent rights, converting a total of 1,216 units into common shares at no cash exercise price. Following these transactions she holds 4,487 shares of common stock directly and 975 unvested restricted stock units.
Quaker Chemical Corp director Jeffry D. Frisby reported routine equity compensation and award vesting activity. On June 1, 2026, he received a grant of 975 restricted stock units, each representing a contingent right to one share of KWR common stock, as part of 2026 compensation for non-management directors under the Long-Term Performance Incentive Plan.
On May 31, 2026, previously granted time-based restricted stock units from June 1, 2025 vested 100%. In connection with this vesting, he exercised restricted stock units and related dividend equivalent rights, converting derivative awards into a total of 1,216 shares of common stock. The dividend equivalent rights had accrued over time as cash dividends were paid on KWR common stock, with each right economically equivalent to one share.
BAKHSHI NANDITA reported acquisition or exercise transactions in this Form 4 filing.
Quaker Chemical Corp director Nandita Bakhshi received equity compensation in the form of common shares and restricted stock units. On June 1, 2026, she was granted 413 shares of common stock at $145.24 per share, representing 75% of her annual director retainer paid in stock.
She was also granted 975 restricted stock units (RSUs) as part of 2026 compensation, each representing one future share of common stock and accruing dividend equivalent rights, vesting 100% on May 31, 2027. On May 31, 2026, previously granted RSUs and related dividend equivalent rights totaling 1,216 shares of common stock vested and were settled, leaving her with 3,059 common shares held directly and 975 RSUs outstanding.
Quaker Chemical Corp EVP Jeewat Bijlani reported an option exercise and related share sale. On 2026-05-26, he exercised employee stock options for 731 shares of common stock at $136.64 per share and sold 731 shares in an open-market transaction at a weighted average price of $145.7678 per share. Following these transactions, he held 6,748 shares of common stock directly and 62 shares indirectly through a 401(k) plan.
Gulf Hungary Holding and its subsidiary QH Hungary Holdings filed Amendment No. 40 to update their Schedule 13D on Quaker Chemical Corporation common stock. They continue to beneficially own a total of 3,640,129 shares, representing about 21.0% of the outstanding common stock, based on 17,366,444 shares outstanding as of April 27, 2026.
QH Hungary directly owns 3,635,112 shares, many of which are pledged under margin loan and prepaid variable share forward arrangements with Citibank and Royal Bank of Canada, while Gulf Hungary directly owns an additional 5,017 escrowed shares. On May 26, 2026, QH Hungary amended and restated multiple prepaid variable share forward supplemental confirmations with Citibank and RBC, paying $4,228,368 to Citibank and $445,539 to RBC in exchange for revised terms.
The updated contracts cover specified maximum share amounts and give QH Hungary the option at each future settlement date (generally between June 1, 2028 and July 7, 2028 for certain tranches) to deliver Quaker Chemical shares or the cash equivalent, with the exact number of shares determined by formulas tied to volume-weighted average prices, a floor price of $141.84 per share and cap prices around $156.02 per share.