INSW

SEC source: 0001679049-26-000161 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 171,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $105.8200 to $108.5900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $105.8200 to $108.5900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

F1 · price: This transaction was executed in multiple trades at prices ranging from $105.8200 to $108.5900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $105.8200 to $108.5900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

SEC source: 0001679049-26-000159 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 173,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $97.7700 to $99.2100. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $97.7700 to $99.2100. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

F1 · price: This transaction was executed in multiple trades at prices ranging from $97.7700 to $99.2100. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $97.7700 to $99.2100. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on May 14, 2026.

SEC source: 0001679049-26-000157 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,984

F1 · kind: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · shares: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · price: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · acquired: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

SEC source: 0001679049-26-000155 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 175,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $85.4300 to $88.7900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $85.4300 to $88.7900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · price: This transaction was executed in multiple trades at prices ranging from $85.4300 to $88.7900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $85.4300 to $88.7900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

SEC source: 0001679049-26-000153 · form4.xml · derivative · entry 3

Grillo Debra · CIK 0002059275 · Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,811

Underlying: Common Stock · 904 shares

Expires not disclosed

F2 · security: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · kind: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · shares: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · price: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.exercise_date: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.expiration_date: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying_shares: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · balance_after: These 904 restricted stock units vested on July 2, 2026 and were settled in shares of Common Stock as reported in Table I of this Form 4.

SEC source: 0001679049-26-000153 · form4.xml · nonDerivative · entry 2

Grillo Debra · CIK 0002059275 · Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,763

F1 · kind: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · balance_after: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000153 · form4.xml · nonDerivative · entry 1

Grillo Debra · CIK 0002059275 · Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,089

F1 · kind: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · balance_after: These 904 shares of Common Stock were acquired upon the vesting of 904 restricted stock units on July 2, 2026 pursuant to the International Seaways, Inc. 2025 Management Incentive Plan (the "Plan") which vested units settled in shares of Common Stock. In connection with the vesting of the units, 326 shares were withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000151 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 101,984

F1 · kind: This transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · shares: This transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · price: This transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · acquired: This transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

SEC source: 0001679049-26-000149 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 177,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $80.0900 to $82.2600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $80.0900 to $82.2600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · price: This transaction was executed in multiple trades at prices ranging from $80.0900 to $82.2600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $80.0900 to $82.2600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

SEC source: 0001679049-26-000145 · form4.xml · nonDerivative · entry 1

STEVENSON CRAIG H JR · CIK 0001088231 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,587

F1 · shares: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000131 · form4.xml · derivative · entry 2

Nugent William F. · CIK 0001699272 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,286

Underlying: Common Stock · 5,286 shares

Expires not disclosed

F2 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · security: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · kind: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · price: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.exercise_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.expiration_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying_shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · balance_after: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

SEC source: 0001679049-26-000131 · form4.xml · derivative · entry 1

Nugent William F. · CIK 0001699272 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,286

Underlying: Common Stock · 5,286 shares

Expires not disclosed

F1 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

SEC source: 0001679049-26-000135 · form4.xml · nonDerivative · entry 1

BERNLOHR TIMOTHY J · CIK 0001286593 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,137

F1 · shares: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000147 · form4.xml · nonDerivative · entry 1

GREENBERG DAVID I · CIK 0001189718 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,864

F1 · shares: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000125 · form4.xml · derivative · entry 2

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,156

Underlying: Common Stock · 8,156 shares

Expires not disclosed

F2 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · security: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · kind: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · price: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.exercise_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.expiration_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying_shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 8,156 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · balance_after: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

SEC source: 0001679049-26-000125 · form4.xml · derivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,156

Underlying: Common Stock · 8,156 shares

Expires not disclosed

F1 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 8,156 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

SEC source: 0001679049-26-000143 · form4.xml · nonDerivative · entry 1

Day Randee E · CIK 0001327776 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,277

F1 · shares: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000137 · form4.xml · nonDerivative · entry 1

BLACKLEY IAN T · CIK 0001337856 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,586

F1 · shares: These 2886 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 2886 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000123 · form4.xml · derivative · entry 2

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,542

Underlying: Common Stock · 20,542 shares

Expires not disclosed

F2 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · security: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · kind: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · price: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.exercise_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.expiration_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying_shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 20,542 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · balance_after: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

SEC source: 0001679049-26-000123 · form4.xml · derivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,542

Underlying: Common Stock · 20,542 shares

Expires not disclosed

F1 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 20,542 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

SEC source: 0001679049-26-000133 · form4.xml · derivative · entry 2

Oshodi Adewale · CIK 0001614569 · Vice President & Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,508

Underlying: Common Stock · 1,508 shares

Expires not disclosed

F2 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · security: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · kind: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · price: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.exercise_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.expiration_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying_shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 1,508 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · balance_after: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

SEC source: 0001679049-26-000133 · form4.xml · derivative · entry 1

Oshodi Adewale · CIK 0001614569 · Vice President & Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,508

Underlying: Common Stock · 1,508 shares

Expires not disclosed

F1 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 1,508 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

SEC source: 0001679049-26-000127 · form4.xml · derivative · entry 2

Small James D III · CIK 0001635888 · CAO,SVP,Sec. & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,436

Underlying: Common Stock · 5,436 shares

Expires not disclosed

F2 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · security: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · kind: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · price: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.exercise_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.expiration_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying_shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,436 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · balance_after: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

SEC source: 0001679049-26-000127 · form4.xml · derivative · entry 1

Small James D III · CIK 0001635888 · CAO,SVP,Sec. & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,436

Underlying: Common Stock · 5,436 shares

Expires not disclosed

F1 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,436 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

SEC source: 0001679049-26-000141 · form4.xml · nonDerivative · entry 1

Johansen Kristian · CIK 0001980204 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,957

F1 · shares: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000139 · form4.xml · nonDerivative · entry 1

Blankenship Alexandra Kate · CIK 0001769458 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,055

F1 · shares: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000121 · form4.xml · nonDerivative · entry 1

Anderson Darron M. · CIK 0001708546 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,957

F1 · shares: These 1,842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

F1 · balance_after: These 1,842 shares of Common Stock were granted to the Reporting Person by the Issuer on June 8, 2026 pursuant to the Issuer's 2020 Non-Employee Director Incentive Compensation Plan and vest on the earlier of (i) June 8, 2027 and (ii) the date of the annual meeting of stockholders in 2027.

SEC source: 0001679049-26-000129 · form4.xml · derivative · entry 2

Solon Derek G. · CIK 0001699442 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,286

Underlying: Common Stock · 5,286 shares

Expires not disclosed

F2 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · security: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · kind: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · price: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.exercise_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.expiration_date: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · derivative.underlying_shares: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

F2 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the 2025 Plan, 5,286 performance restricted stock units (PRSUs). Achievement under the PRSUs will be measured using an operating performance metric (return on invested capital, or ROIC) and a market performance metric (total shareholder return, or TSR, relative to the TSR or a peer group or companies), in each case measured over the three-year period beginning on January 2, 2026 and ending on December 31, 2028. Each metric relates to half of the PRSUs granted.

F3 · balance_after: These PRSUs represent the right to receive an equivalent number of shares of INSW Common Stock (net of any shares deducted for applicable taxes and other withholdings) if and when the PRSUs vest, assuming a performance factor of 100% achievement. The PRSU grants are subject (so long as at least the minimum performance threshold is achieved) to increase or decrease pursuant to a performance factor that may range from 50% to 150%. The number of shares vesting, if any, will be reported after the Compensation Committee of the Issuer's Board of Directors certifies the achievement of the applicable performance metric following the end of the measurement period.

SEC source: 0001679049-26-000129 · form4.xml · derivative · entry 1

Solon Derek G. · CIK 0001699442 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,286

Underlying: Common Stock · 5,286 shares

Expires not disclosed

F1 · security: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · kind: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · price: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.exercise_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.expiration_date: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · derivative.underlying_shares: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

F1 · balance_after: On June 8, 2026, INSW granted the Reporting Person pursuant to the International Seaways 2025 Management Incentive Plan (the "2025 Plan") 5,286 restricted stock units which units vest as to one-third of such units on each of the first, second and third anniversaries of the date of the grant. Each unit represents the right to acquire one share of Common Stock. Settlement of vested units which may be in either shares of Common Stock or cash as determined by the Human Resources and Compensation Committee of the Board in its discretion, and will be net of any shares deducted for applicable taxes and other withholdings.

SEC source: 0001679049-26-000109 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 102,984

F1 · kind: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · shares: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · price: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · acquired: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

SEC source: 0001679049-26-000111 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 179,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $83.6500 to $85.0600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $83.6500 to $85.0600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · price: This transaction was executed in multiple trades at prices ranging from $83.6500 to $85.0600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $83.6500 to $85.0600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

SEC source: 0001679049-26-000107 · form4.xml · nonDerivative · entry 1

Nugent William F. · CIK 0001699272 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,169

F1 · kind: This transaction was executed in multiple trades at prices ranging from $85.0000 to $85.8900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $85.0000 to $85.8900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

F1 · price: This transaction was executed in multiple trades at prices ranging from $85.0000 to $85.8900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $85.0000 to $85.8900. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

SEC source: 0001679049-26-000103 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $86.7600 to $88.8400. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the issuer.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $86.7600 to $88.8400. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the issuer.

F1 · price: This transaction was executed in multiple trades at prices ranging from $86.7600 to $88.8400. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the issuer.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $86.7600 to $88.8400. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the issuer.

SEC source: 0001679049-26-000105 · form4.xml · nonDerivative · entry 1

Solon Derek G. · CIK 0001699442 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,719

F1 · kind: This transaction was executed in multiple trades at prices ranging from $88.6750 to $89.9700. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $88.6750 to $89.9700. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

F1 · price: This transaction was executed in multiple trades at prices ranging from $88.6750 to $89.9700. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $88.6750 to $89.9700. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the issuer or security holder of the Issuer.

SEC source: 0001679049-26-000100 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 103,984

F1 · kind: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · shares: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · price: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · acquired: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

SEC source: 0001679049-26-000098 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 206,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $73.7500 to $75.4500. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $73.7500 to $75.4500. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · price: This transaction was executed in multiple trades at prices ranging from $73.7500 to $75.4500. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $73.7500 to $75.4500. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan executed by the reporting person on March 14, 2025.

SEC source: 0001679049-26-000096 · form4.xml · derivative · entry 3

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,171 shares

Expires 2030-04-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These stock options were exercised on a net share settlement basis.

F2 · price: Represents the number of shares withheld by the Issuer to satisfy (i) the aggregate exercise price for the options and (ii) withholding taxes related to such exercise.

F3 · derivative.exercise_date: 100% of these options were vested on the date exercisable date.

F2 · derivative.underlying: Represents the number of shares withheld by the Issuer to satisfy (i) the aggregate exercise price for the options and (ii) withholding taxes related to such exercise.

F3 · balance_after: 100% of these options were vested on the date exercisable date.

SEC source: 0001679049-26-000096 · form4.xml · nonDerivative · entry 2

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,984

F2 · kind: Represents the number of shares withheld by the Issuer to satisfy (i) the aggregate exercise price for the options and (ii) withholding taxes related to such exercise.

F2 · price: Represents the number of shares withheld by the Issuer to satisfy (i) the aggregate exercise price for the options and (ii) withholding taxes related to such exercise.

SEC source: 0001679049-26-000096 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,692

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These stock options were exercised on a net share settlement basis.

F1 · price: These stock options were exercised on a net share settlement basis.

SEC source: 0001679049-26-000094 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,521

F1 · kind: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · shares: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · price: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

F1 · acquired: The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan executed by the reporting person on May 23, 2025.

SEC source: 0001679049-26-000092 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 208,745

F1 · kind: This transaction was executed in multiple trades at prices ranging from $66.5700 to $68.6300. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1trading plan executed by the reporting person on March 14, 2025.

F1 · shares: This transaction was executed in multiple trades at prices ranging from $66.5700 to $68.6300. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1trading plan executed by the reporting person on March 14, 2025.

F1 · price: This transaction was executed in multiple trades at prices ranging from $66.5700 to $68.6300. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1trading plan executed by the reporting person on March 14, 2025.

F1 · acquired: This transaction was executed in multiple trades at prices ranging from $66.5700 to $68.6300. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, full information regarding the number of shares and prices at which the transaction was effected to the SEC staff, the Issuer or a security holder of the issuer. The transaction reported on this Form 4 were effected pursuant to a Rule 10b5-1trading plan executed by the reporting person on March 14, 2025.

SEC source: 0001679049-26-000088 · form4.xml · derivative · entry 3

Nugent William F. · CIK 0001699272 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,726

Underlying: Common Stock · 1,725 shares

Expires not disclosed

F2 · security: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · kind: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · shares: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · price: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.exercise_date: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.expiration_date: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying_shares: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · balance_after: These 1,725 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

SEC source: 0001679049-26-000088 · form4.xml · nonDerivative · entry 2

Nugent William F. · CIK 0001699272 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,999

F1 · kind: These 1,725 shares of Common Stock are being acquired in connection with the vesting of 1,725 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 808 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 1,725 shares of Common Stock are being acquired in connection with the vesting of 1,725 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 808 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 1,725 shares of Common Stock are being acquired in connection with the vesting of 1,725 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 808 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000088 · form4.xml · nonDerivative · entry 1

Nugent William F. · CIK 0001699272 · Senior Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,807

F1 · kind: These 1,725 shares of Common Stock are being acquired in connection with the vesting of 1,725 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 808 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 1,725 shares of Common Stock are being acquired in connection with the vesting of 1,725 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 808 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 1,725 shares of Common Stock are being acquired in connection with the vesting of 1,725 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 808 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000082 · form4.xml · derivative · entry 3

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,388

Underlying: Common Stock · 3,387 shares

Expires not disclosed

F2 · security: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · kind: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · shares: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · price: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.exercise_date: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.expiration_date: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying_shares: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · balance_after: These 3,387 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

SEC source: 0001679049-26-000082 · form4.xml · nonDerivative · entry 2

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,521

F1 · kind: These 3,387 shares of Common Stock are being acquired in connection with the vesting of 3,387 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 1,685 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 3,387 shares of Common Stock are being acquired in connection with the vesting of 3,387 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 1,685 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 3,387 shares of Common Stock are being acquired in connection with the vesting of 3,387 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 1,685 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000082 · form4.xml · nonDerivative · entry 1

Pribor Jeffrey · CIK 0001303205 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,206

F1 · kind: These 3,387 shares of Common Stock are being acquired in connection with the vesting of 3,387 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 1,685 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 3,387 shares of Common Stock are being acquired in connection with the vesting of 3,387 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 1,685 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 3,387 shares of Common Stock are being acquired in connection with the vesting of 3,387 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 1,685 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000080 · form4.xml · derivative · entry 3

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,347

Underlying: Common Stock · 6,346 shares

Expires not disclosed

F2 · security: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · kind: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · shares: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · price: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.exercise_date: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.expiration_date: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · derivative.underlying_shares: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

F2 · balance_after: These 6,346 restricted stock units vested on March 13, 2026 and are being settled in shares of Common Stock as reported in Table I of this Form 4.

SEC source: 0001679049-26-000080 · form4.xml · nonDerivative · entry 2

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,745

F1 · kind: These 6,346 shares of Common Stock are being acquired in connection with the vesting of 6,346 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 3,068 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 6,346 shares of Common Stock are being acquired in connection with the vesting of 6,346 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 3,068 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 6,346 shares of Common Stock are being acquired in connection with the vesting of 6,346 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 3,068 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

SEC source: 0001679049-26-000080 · form4.xml · nonDerivative · entry 1

Zabrocky Lois K · CIK 0001349704 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,813

F1 · kind: These 6,346 shares of Common Stock are being acquired in connection with the vesting of 6,346 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 3,068 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · shares: These 6,346 shares of Common Stock are being acquired in connection with the vesting of 6,346 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 3,068 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.

F1 · price: These 6,346 shares of Common Stock are being acquired in connection with the vesting of 6,346 restricted stock units on March 13, 2026 pursuant to the International Seaways, Inc. 2020 Management Incentive Compensation Plan (the "Plan") which vested units are being settled in shares of Common Stock. In connection with the vesting of the units 3,068 shares are being withheld by International Seaways, Inc. ("INSW") in payment of the Reporting Person's tax withholding liability incurred as a result of the vesting of the units.