MRX

SEC source: 0001193125-26-421661 · ownership.xml · nonDerivative · entry 2

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,455,076

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on June 12, 2026

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $72.355 to $72.98 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes (i) 20,367 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 272,659 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-421661 · ownership.xml · nonDerivative · entry 1

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,456,336

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on June 12, 2026

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $71.35 to $72.34 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-421660 · ownership.xml · nonDerivative · entry 2

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,252,905

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $72.42 to $72.98, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes (i) 20,628 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-421660 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,254,065

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $71.39 to $72.37, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-393055 · ownership.xml · nonDerivative · entry 2

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,470,348

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on June 12, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $71.23 to $71.6 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes 272,659 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-393055 · ownership.xml · nonDerivative · entry 1

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,473,003

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on June 12, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $70.23 to $71.225 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-393056 · ownership.xml · nonDerivative · entry 2

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,269,571

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $71.21 to $71.6, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-393056 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,272,523

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $70.21 to $71.2075, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-386438 · ownership.xml · nonDerivative · entry 1

Jethwa Nilesh · CIK 0002058018 · CEO, Marex Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 282,950

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of shares underlying the Issuer's 2022 Annual Long Term Incentive Plan.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on September 4, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes (i) 35,596 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 111,183 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-386440 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,286,237

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of shares underlying the Issuer's 2022 Annual Long Term Incentive Plan.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on September 4, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes (i) 20,628 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-386437 · ownership.xml · nonDerivative · entry 1

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,835,472

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of shares underlying the Issuer's 2022 Annual Long Term Incentive Plan.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on September 4, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes (i) 41,256 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 194,411 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-386439 · ownership.xml · nonDerivative · entry 1

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,485,619

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of shares underlying the Issuer's 2022 Annual Long Term Incentive Plan.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on September 4, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes (i) 20,367 shares underlying the Issuer's 2022 Annual Long Term Incentive Plan, and (ii) 272,659 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-361083 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,304,530

F1 · kind: On September 6, 2023, the Reporting Person was granted an award under the Issuer's 2022 Annual Long Term Incentive Plan (the "Plan"), which vests in the form of ordinary shares subject to (i) performance conditions, including a minimum return on equity underpin and growth in adjusted operating profit before tax, and (ii) continued service through the third anniversary of the grant date, in each case subject to the terms of the Plan. On August 19, 2026, the Remuneration Committee of the Issuer's Board of Directors determined that the performance conditions had been met. The award remains subject to time-based vesting and will fully vest on September 6, 2026.

F2 · balance_after: The number of ordinary shares reported herein includes (i) 38,921 shares vesting under the Issuer's 2022 Annual Long Term Incentive Plan as described in footnote 1, and (ii) 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-361082 · ownership.xml · nonDerivative · entry 1

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,498,834

F1 · kind: On September 6, 2023, the Reporting Person was granted an award under the Issuer's 2022 Annual Long Term Incentive Plan (the "Plan"), which vests in the form of ordinary shares subject to (i) performance conditions, including a minimum return on equity underpin and growth in adjusted operating profit before tax, and (ii) continued service through the third anniversary of the grant date, in each case subject to the terms of the Plan. On August 19, 2026, the Remuneration Committee of the Issuer's Board of Directors determined that the performance conditions had been met. The award remains subject to time-based vesting and will fully vest on September 6, 2026.

F2 · balance_after: The number of ordinary shares reported herein includes (i) 33,582 shares vesting under the Issuer's 2022 Annual Long Term Incentive Plan as described in footnote 1, and (ii) 272,659 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-361084 · ownership.xml · nonDerivative · entry 1

Jethwa Nilesh · CIK 0002058018 · CEO, Marex Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 314,517

F1 · kind: On September 6, 2023, the Reporting Person was granted an award under the Issuer's 2022 Annual Long Term Incentive Plan (the "Plan"), which vests in the form of ordinary shares subject to (i) performance conditions, including a minimum return on equity underpin and growth in adjusted operating profit before tax, and (ii) continued service through the third anniversary of the grant date, in each case subject to the terms of the Plan. On August 19, 2026, the Remuneration Committee of the Issuer's Board of Directors determined that the performance conditions had been met. The award remains subject to time-based vesting and will fully vest on September 6, 2026.

F2 · balance_after: The number of ordinary shares reported herein includes (i) 67,163 shares vesting under the Issuer's 2022 Annual Long Term Incentive Plan as described in footnote 1, and (ii) 111,183 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-361080 · ownership.xml · nonDerivative · entry 1

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,872,059

F1 · kind: On September 6, 2023, the Reporting Person was granted an award under the Issuer's 2022 Annual Long Term Incentive Plan (the "Plan"), which vests in the form of ordinary shares subject to (i) performance conditions, including a minimum return on equity underpin and growth in adjusted operating profit before tax, and (ii) continued service through the third anniversary of the grant date, in each case subject to the terms of the Plan. On August 19, 2026, the Remuneration Committee of the Issuer's Board of Directors determined that the performance conditions had been met. The award remains subject to time-based vesting and will fully vest on September 6, 2026.

F2 · balance_after: The number of ordinary shares reported herein includes (i) 77,843 shares vesting under the Issuer's 2022 Annual Long Term Incentive Plan as described in footnote 1, and (ii) 194,411 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-355407 · ownership.xml · nonDerivative · entry 2

Irvin Rob · CIK 0002058610 · Director · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,046

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $71.71 to $72.02, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · balance_after: The number of ordinary shares reported herein includes 25,300 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-355407 · ownership.xml · nonDerivative · entry 1

Irvin Rob · CIK 0002058610 · Director · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,246

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $70.69 to $71.35, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · balance_after: The number of ordinary shares reported herein includes 25,300 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-346805 · ownership.xml · nonDerivative · entry 3

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,265,609

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $62.16 to $62.265, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · balance_after: The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-346805 · ownership.xml · nonDerivative · entry 2

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,266,064

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $61.17 to $62.07, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-346805 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,270,027

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $60.105 to $61.1, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-304739 · ownership.xml · nonDerivative · entry 3

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,282,277

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $65.715 to $65.75, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · balance_after: The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-304739 · ownership.xml · nonDerivative · entry 2

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,282,509

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $64.65 to $65.57, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-304739 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,287,093

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $63.645 to $64.645, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-304738 · ownership.xml · nonDerivative · entry 3

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,794,216

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on March 12, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $65.66 to $66.09, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · balance_after: The number of ordinary shares reported herein includes 194,411 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-304738 · ownership.xml · nonDerivative · entry 2

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,795,003

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on March 12, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $64.66 to $65.63, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-304738 · ownership.xml · nonDerivative · entry 1

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,803,960

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on March 12, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $63.66 to $64.6533, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-272572 · ownership.xml · nonDerivative · entry 3

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,298,943

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $62.945 to $63.075, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · balance_after: The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-272572 · ownership.xml · nonDerivative · entry 2

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,299,752

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $61.965 to $62.94, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-272572 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,313,951

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $60.945 to $61.94, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-272574 · ownership.xml · nonDerivative · entry 2

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,831,358

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on March 12, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $62.81 to $63.37, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes 194,411 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-272574 · ownership.xml · nonDerivative · entry 1

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,835,688

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on March 12, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $61.81 to $62.80, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-267498 · ownership.xml · nonDerivative · entry 1

Assi Georges · CIK 0002138902 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,070

F1 · balance_after: The number of ordinary shares reported herein consists of 2,070 shares underlying restricted share awards granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-267495 · ownership.xml · nonDerivative · entry 1

Schweinitz Konstantin Graf von · CIK 0002113892 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,165

F1 · balance_after: The number of ordinary shares reported herein includes 2,070 shares underlying restricted share awards granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-267492 · ownership.xml · nonDerivative · entry 1

Ing Sarah · CIK 0002058016 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,895

F1 · balance_after: The number of ordinary shares reported herein includes 2,070 shares underlying restricted share awards granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-267490 · ownership.xml · nonDerivative · entry 1

Pietrowicz John W. · CIK 0001485050 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,771

F1 · balance_after: The number of ordinary shares reported herein includes 2,070 shares underlying restricted share awards granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-267491 · ownership.xml · nonDerivative · entry 1

Myers Linda Kristine · CIK 0001805486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,214

F1 · balance_after: The number of ordinary shares reported herein includes 2,070 shares underlying restricted share awards granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-267488 · ownership.xml · nonDerivative · entry 1

Pickering Robert Mark · CIK 0002114166 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,766

F1 · balance_after: The number of ordinary shares reported herein includes 2,070 shares underlying restricted share awards granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-253467 · ownership.xml · nonDerivative · entry 1

Myers Linda Kristine · CIK 0001805486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,144

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying restricted share awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 29, 2026.

SEC source: 0001193125-26-253463 · ownership.xml · nonDerivative · entry 1

Pietrowicz John W. · CIK 0001485050 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,701

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying restricted share awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 29, 2026.

SEC source: 0001193125-26-253462 · ownership.xml · nonDerivative · entry 1

Ing Sarah · CIK 0002058016 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,825

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying restricted share awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 29, 2026.

SEC source: 0001193125-26-256170 · ownership.xml · nonDerivative · entry 2

Texier Thomas · CIK 0002057414 · Group Head of Clearing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 207,019

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on September 10, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $53.775 to $54.155, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes 150,563 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-256170 · ownership.xml · nonDerivative · entry 1

Texier Thomas · CIK 0002057414 · Group Head of Clearing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 207,288

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on September 10, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $52.775 to $53.77, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-241871 · ownership.xml · nonDerivative · entry 1

Irvin Rob · CIK 0002058610 · Director · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,746

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying deferred bonus plan awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes 25,300 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-241858 · ownership.xml · nonDerivative · entry 1

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,315,609

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying deferred bonus plan awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes 220,746 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-241856 · ownership.xml · nonDerivative · entry 1

Van Den Born Simon · CIK 0002057618 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,465,252

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying deferred bonus plan awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes 272,659 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-241862 · ownership.xml · nonDerivative · entry 1

Jethwa Nilesh · CIK 0002058018 · CEO, Marex Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 247,354

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying deferred bonus plan awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes 111,183 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-241863 · ownership.xml · nonDerivative · entry 1

Texier Thomas · CIK 0002057414 · Group Head of Clearing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,591

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying deferred bonus plan awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes 150,563 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-241874 · ownership.xml · nonDerivative · entry 1

Lowitt Ian T · CIK 0001379623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,868,501

F1 · shares: Represents the number of ordinary shares withheld to satisfy the tax withholding obligation in connection with the vesting of certain previously reported shares underlying deferred bonus plan awards.

F2 · price: The price reported represents the closing price of the Issuer's ordinary shares on the Nasdaq Stock Market LLC on May 21, 2026.

F3 · balance_after: The number of ordinary shares reported herein includes 194,411 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.

SEC source: 0001193125-26-221585 · ownership.xml · nonDerivative · entry 2

Tonucci Paolo · CIK 0002057942 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,346,689

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on October 22, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in transactions at prices ranging from $56.065 to $56.74 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4 · balance_after: The number of ordinary shares reported herein includes 286,871 shares underlying deferred bonus plan awards previously granted to the Reporting Person. Each award represents a contingent right to receive one (1) ordinary share of the Issuer upon vesting and settlement of the applicable award.