Cabot Form 4 Filings

CABOT CORP (CBT) reported that President and CEO Sean D. Keohane exercised employee stock options and sold the resulting shares. On 2026-08-24 he exercised options for 2,779 shares of common stock at an exercise price of $50.00 per share, and the same day sold 2,779 shares of common stock at $85.50 per share. Following the option exercise, he held 134,895 option shares tied to that grant, and separately reported 14,263.7411 shares of common stock held indirectly through the trustee for the company’s 401(k) plan. A footnote states the original option covered 137,674 shares and vested over three years from 2018 to 2020.

CABOT CORP President and CEO Sean D. Keohane exercised an employee stock option for 91,923 shares of common stock at an exercise price of $62.24 per share on August 7, 2026. The same day, he sold 91,923 common shares at a weighted average price of $86.4053 per share in multiple transactions at prices ranging from $85.970 to $86.815. The option, which covered 91,923 shares and vested between 2018 and 2020, now has 0 options remaining. Keohane continues to hold 14,263.7411 shares of common stock indirectly through the trustee for the corporation's 401(k) plan.

Nathoo Raffiq reported acquisition or exercise transactions in this Form 4 filing.

Cabot Corp director Raffiq Nathoo received a grant of phantom stock units as compensation. On this Form 4, he was granted 261.5064 phantom stock units tied to Cabot common stock at a reference price of $90.82 per unit. Following the award, his reported balance is 1,877.9167 phantom stock units.

The phantom stock units track Cabot’s common stock on a 1-for-1 basis and are cash-settled rather than delivering actual shares. They will be paid out in cash either when Nathoo’s service as a director ends or according to his prior distribution election, whichever happens first.

CABOT CORP President and CEO Sean D. Keohane reported a grant of 83.6823 phantom stock units. These units were awarded as a derivative security tied 1-for-1 to Cabot common stock at a reference price of $90.82 per unit.

Following this compensation-related grant, Keohane holds a total of 47,830.9773 phantom stock units directly. According to the disclosure, these phantom stock units were acquired under the company’s supplemental 401(k) plan and will be settled in connection with his retirement or other termination of service.

Cabot Corp officer Lisa M. Dumont received a small grant of phantom stock units as part of her compensation. She acquired 3.9820 Phantom Stock Units linked 1-for-1 to Cabot common stock at a reference price of $87.65 per share. These units were credited as dividend equivalents under the company’s Supplemental 401(k) Plan and will be settled in the future when she retires or otherwise leaves the company. Following this award, she holds a total of 742.6524 phantom stock units directly.

CABOT CORP director Douglas G. DelGrosso reported a compensation-related award of phantom stock units. On June 12, 2026, he acquired 27.6938 Phantom Stock Units, each tied 1-for-1 to CABOT common stock, reflecting dividends on prior deferred units.

Following this grant, DelGrosso holds a total of 5,164.9539 Phantom Stock Units directly. These units, acquired under CABOT’s Non-Employee Director’s Deferral Plan, will be settled in Cabot common stock or cash after his board service ends or as he has elected for distribution.

CABOT CORP senior vice president and general counsel Karen A. Kalita reported a routine compensation-related transaction involving phantom stock units. She acquired 28.4703 phantom stock units linked 1-for-1 to Cabot common stock at a reference price of $87.65 per share.

These units represent dividend equivalents credited under the company’s Supplemental 401(k) Plan and are scheduled to be settled in shares or cash when she retires or otherwise leaves the company. Following this grant, her total phantom stock unit balance stands at 5,309.7899 units.

Nathoo Raffiq reported acquisition or exercise transactions in this Form 4 filing.

Cabot Corp director Raffiq Nathoo received an award of 8.667 Phantom Stock Units on 2026-06-12. These units are credited as dividends under the Non-Employee Director's Deferral Plan at a 1-for-1 rate with common stock and will be settled upon his termination of board service or according to his prior distribution election. Following this award, his Phantom Stock Unit balance is 1,616.4104 units.

CABOT CORP Executive Vice President and CFO Erica McLaughlin received a small compensation-related award of phantom stock units linked to CABOT common stock. She acquired 55.2323 phantom stock units at a reference price of $87.65 per share, bringing her total phantom stock unit holdings to 10,300.9799 units.

According to the disclosure, these units represent dividends paid on previously acquired phantom stock units under the company’s Supplemental 401(k) Plan. The phantom stock units are scheduled to be settled in connection with her retirement or other termination of employment, so they do not reflect an open-market stock purchase or sale.

Cabot Corp President and CEO Sean D. Keohane reported an acquisition of phantom stock units as part of his deferred compensation. On the transaction date, he was credited with 256.0140 phantom stock units tied to Cabot common stock at a reference price of $87.65 per unit.

According to the footnotes, these units represent dividends paid on previously acquired phantom stock units under the company’s Supplemental 401(k) Plan. They are scheduled to be settled in Cabot common stock when he retires or otherwise leaves the company. Following this credit, his phantom stock balance reported in this plan is 47,747.2951 units.

Cabot Corp Senior Vice President William F. Masterson III received a grant of 2.8237 Phantom Stock Units on Common Stock as a compensation-related award. These units were credited as dividends on prior phantom holdings under the company’s Supplemental 401(k) Plan and convert 1-for-1 into Cabot common stock equivalents. Following this grant, his phantom stock balance stands at 526.6187 units, which will be settled in shares after retirement or other termination of employment.

Nathoo Raffiq reported acquisition or exercise transactions in this Form 4 filing.

Cabot Corp director Raffiq Nathoo received a grant of 315.3632 Phantom Stock Units on March 31, 2026 as compensation. Each unit is tied 1-for-1 to Cabot common stock and was valued at $75.31 per unit for this award.

These Phantom Stock Units are settled in cash, not shares, and will be paid either when Nathoo’s board service ends or according to his distribution election, whichever happens first. After this grant, he holds a total of 1,607.7435 Phantom Stock Units, reflecting deferred, cash-settled exposure to Cabot’s share value rather than an open-market stock purchase or sale.

Cabot Corp VP, Controller & CAO Lisa M. Dumont received an automatic grant of 4.7528 phantom stock units on March 13, 2026. These units represent dividends paid on previously acquired phantom stock under Cabot’s Supplemental 401(k) Plan and are credited on a 1-for-1 basis with common shares. After this grant, Dumont holds a total of 738.6704 phantom stock units, which will be settled in connection with her retirement or other termination of employment.

Cabot Corp Executive Vice President and CFO Erica McLaughlin received a grant of 65.9221 phantom stock units on common stock, valued at $69.49 per unit. This increased her phantom stock balance to 10,245.7476 units.

According to the footnotes, these units represent dividends paid on previously acquired phantom stock units under Cabot’s Supplemental 401(k) Plan. The phantom stock units are credited on a 1-for-1 basis with Cabot common stock and are scheduled to be settled in shares after her retirement or other termination of employment, rather than being immediately tradable stock.

DELGROSSO DOUGLAS G reported acquisition or exercise transactions in this Form 4 filing.

CABOT CORP director Douglas G. DelGrosso received an additional 33.0535 phantom stock units credited on March 13, 2026. These units were valued at $69.4900 per unit and increase his deferred phantom stock balance to 5,137.2601 units.

The footnotes explain that the units represent dividends paid on phantom stock units under the Corporation's Non-Employee Director's Deferral Plan. They will be settled on a 1-for-1 basis in Cabot common stock either when he leaves the board or according to his chosen distribution schedule, whichever happens first.

Keohane Sean D reported acquisition or exercise transactions in this Form 4 filing.

Cabot Corp President and CEO Sean D. Keohane received a grant of 305.563 phantom stock units tied to Cabot common stock at a reference price of $69.49 per unit. These units reflect dividends on prior phantom stock under the company’s Supplemental 401(k) Plan and will be settled in shares after his retirement or other termination of employment. Following this grant, he holds a total of 47,491.2811 phantom stock units.

Cabot Corp director Raffiq Nathoo received a small phantom stock award as part of board compensation. On this Form 4, he acquired 8.3153 phantom stock units tied to Cabot common stock, valued at $69.49 per unit, bringing his total phantom stock holdings to 1,292.3803 units.

The filing notes these units represent dividends paid on previously acquired phantom stock under Cabot’s Non-Employee Director’s Deferral Plan and will be settled in stock or cash when his board service ends or according to his distribution election. This is a routine, non-cash, compensation-related accrual rather than an open-market trade.

Kalita Karen A reported acquisition or exercise transactions in this Form 4 filing.

CABOT CORP senior vice president and general counsel Karen A. Kalita received an automatic award of 33.9804 phantom stock units on Common Stock. These units were credited on the basis of dividends paid under the corporation's Supplemental 401(k) Plan and are part of her deferred compensation.

After this grant, Kalita holds a total of 5,281.3196 phantom stock units. Each phantom unit is linked 1-for-1 to a share of Cabot common stock and is scheduled to be settled in stock or cash only when she retires or otherwise leaves the company.

Masterson William F III reported acquisition or exercise transactions in this Form 4 filing.

Cabot Corp Senior Vice President William F. Masterson III received an automatic credit of 3.3701 Phantom Stock Units tied to Cabot common stock, valued at $69.49 per unit. These units represent dividends paid on earlier phantom stock holdings under the Supplemental 401(k) Plan and will be settled upon his retirement or other termination of employment. Following this grant, his phantom stock unit balance reported in the plan is 523.795 units.

Cabot Corporation director Juan Enriquez reported an acquisition of company stock through a compensation-related transaction. On January 8, 2026, he acquired 486 shares of Cabot common stock at a price of $0 per share, reflecting equity granted rather than an open-market purchase. The filing notes that these shares have been deferred under Cabot's Non-Employee Directors' Deferral Plan, meaning the director has chosen to defer receipt of the shares according to that plan's terms. Following this transaction, Enriquez beneficially owns 41,526 Cabot common shares, held directly.

Cabot Corporation director Raffiq Nathoo reported acquiring 2,298 shares of Cabot common stock on January 8, 2026. The filing shows the shares were credited at a price of $0 per share and were deferred under Cabot's Non-Employee Directors' Deferral Plan, meaning they reflect deferred director compensation rather than an open-market purchase. Following this transaction, Nathoo beneficially owned 9,266 Cabot shares, held directly.

Cabot Corporation director Doug G. Del Grosso reported acquiring 2,298 shares of Cabot common stock on January 8, 2026. The shares were recorded at a price of $0.00 per share, indicating they were received without cash consideration, such as through an equity award or similar arrangement. Following this transaction, Del Grosso directly holds 15,079 shares of Cabot common stock. The filing indicates the transaction was made by a single reporting person in his capacity as a director.

Cabot Corporation director Thierry Vanlancker reported an acquisition of company common stock through a compensation-related deferral. On January 8, 2026, he acquired 2,298 shares of Cabot common stock at a stated price of $0 per share, classified as an acquisition transaction. After this transaction, he beneficially owned 4,902 Cabot shares in total, held directly.

According to the footnote, these shares have been deferred under Cabot's Non-Employee Directors' Deferral Plan, meaning they arise from the director compensation program rather than an open‑market purchase. The filing indicates this report is made by a single reporting person in his capacity as a director of Cabot Corporation.

Cabot Corporation director Michael M. Morrow reported an acquisition of company common stock under a director compensation arrangement. On January 8, 2026, he acquired 2,298 shares of Cabot common stock at a reported price of $0 per share, reflecting stock granted rather than purchased for cash. Following this transaction, he beneficially owned 22,302 shares of Cabot common stock in direct form.

The filing notes that these shares have been deferred under Cabot's Non-Employee Directors' Deferral Plan, meaning the value is credited for the director’s benefit instead of being immediately delivered in standard shares. The transaction reflects routine director equity compensation rather than an open-market trade.

Cabot Corporation director reports stock award under deferral plan. Director Michelle Elizabeth Williams acquired 2,298 shares of Cabot Corporation common stock on January 8, 2026, reported as an award at a price of $0 per share. Following this award, she beneficially owned 6,776 shares of Cabot common stock in total.

The filing notes that these shares have been deferred under Cabot's Non-Employee Directors' Deferral Plan, meaning the award is subject to the terms of that plan rather than delivered as immediately unrestricted shares.

Cabot Corporation director Christine Y. Yan reported receiving 2,298 shares of Cabot common stock on January 8, 2026, as an acquisition transaction. The shares were credited at a price of $0.00 per share under Cabot's Non-Employee Directors' Deferral Plan, meaning they represent deferred director compensation rather than an open-market purchase. Following this transaction, Yan beneficially owned 17,171 shares of Cabot common stock in direct form. This filing reflects routine equity-based compensation for a non-employee director rather than a cash trade in the stock.

Cabot Corporation director Frank Anders Wilson reported an acquisition of company stock under a deferred compensation arrangement. On January 8, 2026, he acquired 2,298 shares of Cabot common stock at a stated price of $0 per share, bringing his directly held beneficial ownership to 18,552 shares. The filing explains that these shares have been deferred pursuant to Cabot's Non-Employee Directors' Deferral Plan, meaning the award is tied to his service as a non-employee director rather than an open-market purchase.

Cabot Corporation director William C. Kirby reported an acquisition of 486 shares of Cabot common stock on January 8, 2026, at a price of $0 per share. These shares were acquired as a form of compensation rather than through an open-market purchase, and are linked to Cabot's Non-Employee Directors' Deferral Plan. Following this transaction, Kirby beneficially owned 27,688 shares of Cabot common stock in direct form.

The filing characterizes this as a non-derivative, compensation-related award, reflecting ongoing equity-based alignment between the director and the company.

Cabot Corporation director Cynthia A. Arnold reported acquiring additional company stock. On January 8, 2026, she acquired 2,298 shares of Cabot common stock in a transaction reported with a price of $0 per share, indicating the shares were received without cash payment, such as through an award or similar arrangement. Following this transaction, she beneficially owns 19,620 shares of Cabot common stock, held directly in her name.

Cabot Corporation director Raffiq Nathoo filed an amended insider report updating his holdings of cash-settled phantom stock units tied to Cabot common stock. On 12/31/2025, he reported the disposition of 3,383.8519 phantom stock units referencing the same number of Cabot common shares at $66.28 per share, in line with his distribution election under the Non-Employee Director's Deferral Plan. He also reported acquiring 358.3283 additional phantom stock units on the same date at $66.28, bringing his directly held phantom stock balance to 1,284.065 units. These phantom units are paid in cash and are designed to mirror the value of Cabot’s stock rather than representing actual shares.

Cabot Corporation director reports additional phantom stock units. Director Juan Enriquez filed a statement covering a transaction dated 12/31/2025. He acquired 414.9064 phantom stock units linked to Cabot Corporation common stock at a reference price of $66.28 per unit. After this transaction, he beneficially owned 55,404.8891 phantom stock units in a direct capacity. Each phantom stock unit represents a 1-for-1 economic interest in a share of common stock, and the units will be settled in cash either when he ceases serving as a director or according to his prior distribution election, whichever occurs first.

Cabot Corporation director Raffiq Nathoo reported an equity-related compensation transaction dated 12/31/2025. The filing shows the acquisition of 358.3283 phantom stock units, coded as an "A" (acquired) transaction, with a reference price of $66.28 per unit.

Following this transaction, Nathoo beneficially owns 1,284.065 phantom stock units on a direct basis. Each phantom stock unit is subject to a 1-for-1 relationship with Cabot common stock. The phantom stock will be settled in cash either when Nathoo’s service as a director ends or in line with his distribution election, whichever occurs first.

Cabot Corporation officer reports phantom stock grant under benefit plan

A Cabot Corporation executive, serving as VP, Controller & CAO, reported the acquisition of derivative equity-based compensation tied to Cabot common stock. On 12/31/2025, the reporting person received 182.3206 phantom stock units, each linked on a 1-for-1 basis to a share of Cabot common stock at a reference price of $66.28. Following this grant, the executive beneficially owned 733.9176 phantom stock units in total.

The phantom stock units were acquired under Cabot’s supplemental 401(k) plan and are scheduled to be settled in Cabot common stock when the executive retires or otherwise terminates service, rather than being settled immediately.

Cabot Corporation senior vice president and general counsel Karen A. Kalita reported an insider equity transaction involving derivative securities. On 12/31/2025, she acquired 922.4094 phantom stock units tied to Cabot common stock at a price of $66.28 per unit. Each phantom unit represents a 1-for-1 claim on a share of common stock and was granted under the company’s supplemental 401(k) plan, to be settled when she retires or otherwise leaves the company. Following this transaction, she beneficially owns 5,247.3392 phantom stock units directly.

Cabot Corporation Executive Vice President and CFO Erica McLaughlin reported a routine change in her deferred equity holdings. On 12/31/2025, she acquired 1,034.5426 phantom stock units linked to Cabot common stock under the company’s supplemental 401(k) plan at a reference price of $66.28 per unit. Each phantom stock unit represents one share of Cabot common stock and is designed to mirror the stock’s value over time. After this transaction, she beneficially owned 10,179.8254 derivative securities in the form of phantom stock units, all held directly. These units are scheduled to be settled in Cabot common stock upon her retirement or other termination of service, reflecting long-term, retirement-focused compensation rather than an open-market trade.

Cabot Corporation senior vice president reports acquisition of phantom stock units. A Cabot Corp (CBT) officer filed details of a compensation-related transaction dated 12/31/2025. The filing shows the officer acquired 228.5882 phantom stock units linked to Cabot common stock at a price of $66.28 per unit. Each phantom stock unit is described as convertible on a 1-for-1 basis into Cabot common shares. After this transaction, the officer held 520.4248 derivative securities, reported as directly owned. The phantom stock units were acquired under the company’s supplemental 401(k) plan and are to be settled when the reporting person retires or otherwise terminates service.

Cabot Corporation's President and CEO, who is also a director, reported a compensation-related transaction involving derivative securities. On 12/31/2025, the insider acquired 2,562.8468 phantom stock units linked on a 1-for-1 basis to Cabot common stock. The filing shows a reference price of $66.28 per unit and indicates that, after this transaction, the insider beneficially owned 47,185.7181 phantom stock units in total. These units were granted under the company’s supplemental 401(k) plan and are scheduled to be settled in Cabot common stock upon the executive’s retirement or other termination of service, aligning a portion of the CEO’s compensation with long-term shareholder interests.

Cabot Corporation's Executive Vice President and CFO reported acquiring 59.8253 phantom stock units linked to Cabot common stock on 12/12/2025.

The acquisition represents dividends paid on existing phantom stock units under the Corporation's Supplemental 401(k) Plan, increasing the officer's directly held phantom stock balance to 9,145.2828 units. Each phantom stock unit is tied to one share of Cabot common stock on a 1 for 1 basis and is to be settled upon the reporting person's retirement or other termination of employment.

Cabot Corporation director Juan Enriquez reported a routine change in his deferred equity compensation. On 12/12/2025, he acquired 359.7252 phantom stock units tied on a 1-for-1 basis to Cabot common stock under the company's Non-Employee Director's Deferral Plan. These units represent dividends paid on previously deferred phantom stock and will be settled in Cabot common shares either when he leaves the board or according to his distribution election, whichever occurs first. After this transaction, he beneficially owned 54,989.9827 phantom stock units, all held directly.

Cabot Corporation reported a routine insider equity transaction by one of its directors. On 12/12/2025, the director acquired 28.1918 phantom stock units at a price of $68.34 per unit under Cabot’s Non-Employee Director's Deferral Plan. These units are designed to mirror the value of Cabot common stock on a one-for-one basis.

The 28.1918 units represent dividends paid on existing phantom stock unit holdings and will be settled either when the director’s board service ends or according to the director’s prior distribution election, whichever happens first. Following this transaction, the director beneficially owns a total of 4,309.5886 phantom stock units, held directly.

Cabot Corporation senior vice president and general counsel Karen A. Kalita reported an acquisition of derivative securities tied to company stock. On 12/12/2025, she was credited with 28.2916 phantom stock units under Cabot's Supplemental 401(k) Plan, recorded at a derivative security price of $68.34 per unit.

Each phantom stock unit represents the right to receive one share of Cabot common stock on a 1-for-1 basis, to be settled upon her retirement or other termination of employment. Following this dividend-equivalent credit, she beneficially owned a total of 4,324.8482 phantom stock units, held directly.

Cabot Corporation reported that one of its senior vice presidents acquired additional phantom stock units linked to the company’s common stock. On 12/12/2025, the officer received 1.9091 phantom stock units as shown in the derivative securities table, bringing the total number of phantom stock units beneficially owned to 291.8366, held directly.

According to the footnotes, these phantom stock units are credited on a 1-for-1 basis with Cabot common shares and represent dividends paid on phantom stock units previously acquired under the Corporation’s Supplemental 401(k) Plan. The units are to be settled in connection with the reporting person’s retirement or other termination of employment, meaning the economic value is deferred until the end of the officer’s service.

Cabot Corp executive Lisa M. Dumont, VP, Controller & CAO, reported a routine insider transaction involving phantom stock units linked to Cabot common stock. On 12/12/2025, she acquired 3.6084 phantom stock units as dividends under the company’s Supplemental 401(k) Plan at a reference price of $68.34 per share.

Each phantom stock unit represents a 1-for-1 interest in Cabot common stock and is scheduled to be settled in shares upon her retirement or other termination of employment. Following this transaction, Dumont beneficially owns 551.597 phantom stock units, held directly.

Cabot Corp reported an insider equity change for its President and CEO, who is also a director. On 12/12/2025, the reporting person acquired 291.9071 phantom stock units with a reported price of $ 68.34 per unit, coded as an acquisition. These units were credited as dividends on phantom stock units under the company’s Supplemental 401(k) Plan.

Each phantom stock unit is linked 1-for-1 to Cabot common stock, with 291.9071 shares underlying this transaction. After this credit, the reporting person beneficially owned 44,622.8712 phantom stock units, held directly, which are scheduled to be settled upon retirement or other termination of employment.

Cabot Corporation director Doug G. Del Grosso reported a small insider transaction involving derivative equity. On 12/12/2025, he acquired 33.39 phantom stock units linked to Cabot common stock in a transaction coded as an "A" acquisition. The derivative security shows a price of $68.34.

Each phantom stock unit is described as having a 1-for-1 relationship to Cabot common stock, and the reported units represent dividends paid on phantom stock units acquired under the company’s Non-Employee Director's Deferral Plan. These units will be settled either upon his termination of service as a director or according to his distribution election, whichever occurs first. Following this transaction, Del Grosso beneficially owns 5,104.2066 phantom stock units.

Cabot Corporation reported an equity compensation grant to Senior Vice President William F. Masterson III. On December 3, 2025, he acquired 3,486 shares of Cabot common stock at a price of $0, increasing his directly held stake to 7,210 shares. This indicates a stock award rather than an open-market purchase.

On the same date, he also received an employee stock option to buy 12,767 Cabot common shares at an exercise price of $64.54 per share. The option is scheduled to vest over three years: 30% on December 3, 2026, 30% on December 3, 2027, and 40% on December 3, 2028, and will expire on December 2, 2035. These awards align his compensation more closely with Cabot’s long-term share performance.

Cabot Corporation (CBT) reported an insider equity transaction by its Senior Vice President on a Form 4. On 11/19/2025, the officer acquired 671 shares of Cabot common stock at a reported price of $0, reflecting performance-based units earned for fiscal year 2025, with a portion still subject to time-based vesting. On the same date, 219 shares were disposed of at $59.76, typically consistent with shares withheld or sold to cover taxes. After these transactions, the officer directly owns 13,496 Cabot shares.

Cabot Corporation (CBT) senior vice president and general counsel Karen A. Kalita reported equity awards and related share activity on a Form 4 dated for transactions on 11/19/2025.

She acquired 4,518 shares of common stock at a stated price of $0, increasing her direct holdings. She also acquired 4,084 common shares at a stated price of $0, described as performance-based units earned for fiscal 2025, with 2,931 of those still subject to time-based vesting. To cover obligations associated with these awards, 872 shares were disposed of at $59.76 per share.

Following these transactions, she directly held 45,242 common shares and indirectly held 577.005 shares through the trustee for the corporation’s 401(k) plan. In addition, she was granted an employee stock option for 16,908 shares of common stock with an exercise price of $59.76 per share, expiring on 11/18/2035, vesting 30% on 11/19/2026, 30% on 11/19/2027, and 40% on 11/19/2028.

Cabot Corporation (CBT) officer Lisa M. Dumont, VP, Controller & CAO, reported equity transactions in company stock on a Form 4 dated 11/19/2025. She acquired 1,606 shares of common stock at $0 and an additional 901 performance-based units at $0, reflecting awards tied to the corporation's fiscal 2025 performance, of which 637 units remain subject to time-based vesting. She also disposed of 200 shares of common stock at $59.76 in a transaction coded as tax withholding (code F). After these transactions, she directly beneficially owned 11,715 shares of Cabot common stock and indirectly held 1,598.5907 shares through the trustee for the corporation's 401(k) plan.