ARQQ

SEC source: 0001859690-26-000165 · form4.xml · nonDerivative · entry 1

Nilan Nicholas William · CIK 0002120006 · General Manager-US

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 960

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000164 · form4.xml · derivative · entry 8

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,166

Underlying: Ordinary Shares · 84 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F4 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F4 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

SEC source: 0001859690-26-000164 · form4.xml · derivative · entry 7

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,167

Underlying: Ordinary Shares · 84 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F3 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

SEC source: 0001859690-26-000164 · form4.xml · derivative · entry 6

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 916

Underlying: Ordinary Shares · 67 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

SEC source: 0001859690-26-000164 · form4.xml · derivative · entry 5

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 983

Underlying: Ordinary Shares · 17 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

SEC source: 0001859690-26-000164 · form4.xml · nonDerivative · entry 4

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,702

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000164 · form4.xml · nonDerivative · entry 3

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,618

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000164 · form4.xml · nonDerivative · entry 2

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,534

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000164 · form4.xml · nonDerivative · entry 1

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,467

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000163 · form4.xml · derivative · entry 4

Wilder Ben Simon · CIK 0002101275 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,333

Underlying: Ordinary Shares · 167 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F3 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

SEC source: 0001859690-26-000163 · form4.xml · derivative · entry 3

Wilder Ben Simon · CIK 0002101275 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,887

Underlying: Ordinary Shares · 278 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

SEC source: 0001859690-26-000163 · form4.xml · nonDerivative · entry 2

Wilder Ben Simon · CIK 0002101275 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,027.47

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000163 · form4.xml · nonDerivative · entry 1

Wilder Ben Simon · CIK 0002101275 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,860.47

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000162 · form4.xml · derivative · entry 6

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,934

Underlying: Ordinary Shares · 306 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F4 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F4 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

SEC source: 0001859690-26-000162 · form4.xml · derivative · entry 5

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,634

Underlying: Ordinary Shares · 150 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

F3 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, and July 1, 2027.

SEC source: 0001859690-26-000162 · form4.xml · derivative · entry 4

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,718

Underlying: Ordinary Shares · 695 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

SEC source: 0001859690-26-000162 · form4.xml · nonDerivative · entry 3

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,613

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000162 · form4.xml · nonDerivative · entry 2

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,307

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000162 · form4.xml · nonDerivative · entry 1

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,157

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001104659-26-109998 · tm2626011-1_4seq1.xml · derivative · entry 3

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 0

Underlying: Ordinary Shares · 4,600,000 shares

Expires 2026-09-30

F1 · derivative.exercise_date: Each Ordinary Share Purchase Warrant can be exercised at any time, at the holder's election, to purchase one ARQQ ordinary share.

SEC source: 0001104659-26-109998 · tm2626011-1_4seq1.xml · nonDerivative · entry 1

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 8,942,448

SEC source: 0001859690-26-000160 · form4.xml · derivative · entry 2

Calabria Carlo · CIK 0001863192 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 757 shares

Expires not disclosed

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 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

F1 · derivative.exercise_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

F1 · derivative.expiration_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

SEC source: 0001859690-26-000160 · form4.xml · nonDerivative · entry 1

Calabria Carlo · CIK 0001863192 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 232,478

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 · price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

SEC source: 0001859690-26-000154 · form4.xml · derivative · entry 3

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 673 shares

Expires not disclosed

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 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

F1 · derivative.exercise_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

F1 · derivative.expiration_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

SEC source: 0001859690-26-000154 · form4.xml · nonDerivative · entry 1

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,023

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 · price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

SEC source: 0001859690-26-000153 · form4.xml · derivative · entry 2

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 841 shares

Expires not disclosed

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 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

F1 · derivative.exercise_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

F1 · derivative.expiration_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

SEC source: 0001859690-26-000153 · form4.xml · nonDerivative · entry 1

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,450

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 · price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested within the week of the grant date.

SEC source: 0001859690-26-000148 · form4.xml · derivative · entry 1

Calabria Carlo · CIK 0001863192 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 757

Underlying: Ordinary Shares · 757 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

F1 · derivative.exercise_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

F1 · derivative.expiration_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

SEC source: 0001859690-26-000146 · form4.xml · derivative · entry 1

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 673

Underlying: Ordinary Shares · 673 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

F1 · derivative.exercise_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

F1 · derivative.expiration_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

SEC source: 0001859690-26-000147 · form4.xml · derivative · entry 1

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 841

Underlying: Ordinary Shares · 841 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

F1 · derivative.exercise_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

F1 · derivative.expiration_date: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest within the week of the grant date.

SEC source: 0001104659-26-083095 · tm2620327-1_4seq1.xml · derivative · entry 2

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,096.84

Underlying: Ordinary Shares · 8 shares

Expires 2026-09-03

F1 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 352,421 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,096.84 ARQQ ordinary shares on a post-reverse stock split basis.

F3 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.18 to $1.20 per Business Combination Warrant, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Commission, upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F1 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 352,421 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,096.84 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001104659-26-083095 · tm2620327-1_4seq1.xml · derivative · entry 1

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,104.84

Underlying: Ordinary Shares · 404 shares

Expires 2026-09-03

F1 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 352,421 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,096.84 ARQQ ordinary shares on a post-reverse stock split basis.

F2 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.14 to $1.32 per Business Combination Warrant, 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 (the "Commission"), upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F1 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 352,421 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,096.84 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001104659-26-082255 · tm2620159-1_4seq1.xml · derivative · entry 2

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,508.84

Underlying: Ordinary Shares · 110 shares

Expires 2026-09-03

F1 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 362,721 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,508.84 ARQQ ordinary shares on a post-reverse stock split basis.

F3 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.32 to $1.49 per Business Combination Warrant, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Commission, upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F1 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 362,721 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,508.84 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001104659-26-082255 · tm2620159-1_4seq1.xml · derivative · entry 1

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,618.52

Underlying: Ordinary Shares · 40 shares

Expires 2026-09-03

F1 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 362,721 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,508.84 ARQQ ordinary shares on a post-reverse stock split basis.

F2 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.15 to $1.19 per Business Combination Warrant, 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 (the "Commission"), upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F1 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 362,721 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,508.84 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001104659-26-081290 · tm2619962-1_4seq1.xml · derivative · entry 2

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,658.52

Underlying: Ordinary Shares · 97 shares

Expires 2026-09-03

F1 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 366,463 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,658.52 ARQQ ordinary shares on a post-reverse stock split basis.

F3 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.07 to $1.32 per Business Combination Warrant, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Commission, upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F1 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 366,463 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,658.52 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001859690-26-000133 · form4.xml · nonDerivative · entry 2

Leaver Andrew · CIK 0002035890 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,483

SEC source: 0001859690-26-000137 · form4.xml · nonDerivative · entry 5

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,462

SEC source: 0001859690-26-000128 · form4.xml · nonDerivative · entry 5

Feenan Paul · CIK 0001967068 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,351

SEC source: 0001859690-26-000135 · form4.xml · nonDerivative · entry 5

Ritchie Garth · CIK 0001840684 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,609

SEC source: 0001859690-26-000131 · form4.xml · nonDerivative · entry 3

Wilder Ben Simon · CIK 0002101275 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,582.47

SEC source: 0001104659-26-081290 · tm2619962-1_4seq1.xml · derivative · entry 1

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,755.68

Underlying: Ordinary Shares · 36 shares

Expires 2026-09-03

F1 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 366,463 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,658.52 ARQQ ordinary shares on a post-reverse stock split basis.

F2 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.35 to $1.40 per Business Combination Warrant, 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 (the "Commission"), upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F1 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 366,463 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,658.52 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001104659-26-080395 · tm2619693-1_4seq1.xml · derivative · entry 4

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 14,791.68

Underlying: Ordinary Shares · 41 shares

Expires 2026-09-03

F3 · derivative.exercise_price: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 369,792 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,791.68 ARQQ ordinary shares on a post-reverse stock split basis.

F5 · price: The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.35 to $1.79 per Business Combination Warrant, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Commission, upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

F3 · derivative.exercise_date: On September 19, 2024, the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 369,792 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,791.68 ARQQ ordinary shares on a post-reverse stock split basis.

SEC source: 0001104659-26-080395 · tm2619693-1_4seq1.xml · nonDerivative · entry 2

Lefebvre d'Ovidio Manfredi · CIK 0001840678 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Beneficially owned through Heritage Assets SCSp

Disclosed balance after: 4,342,448

F2 · price: The price reported is a weighted average price. The Ordinary Shares were sold in multiple transactions at prices ranging from $30.00 to $30.93 per Ordinary Share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Commission, upon request, full information regarding the number of Ordinary Shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001859690-26-000133 · form4.xml · derivative · entry 3

Leaver Andrew · CIK 0002035890 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,125

Underlying: Ordinary Shares · 15,625 shares

Expires not disclosed

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 · derivative.exercise_price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028, and January 1, April 1, July 1, and October 1, 2029.

F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028, and January 1, April 1, July 1, and October 1, 2029.

SEC source: 0001859690-26-000133 · form4.xml · nonDerivative · entry 1

Leaver Andrew · CIK 0002035890 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,376

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

SEC source: 0001859690-26-000137 · form4.xml · derivative · entry 9

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,240

Underlying: Ordinary Shares · 915 shares

Expires not disclosed

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 · derivative.exercise_price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F5 · derivative.exercise_date: The RSUs vest quarterly in equal installments on July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

F5 · derivative.expiration_date: The RSUs vest quarterly in equal installments on July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

SEC source: 0001859690-26-000137 · form4.xml · derivative · entry 8

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,784

Underlying: Ordinary Shares · 448 shares

Expires not disclosed

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 · derivative.exercise_price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F4 · derivative.exercise_date: The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, and July 1, 2027.

F4 · derivative.expiration_date: The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, and July 1, 2027.

SEC source: 0001859690-26-000137 · form4.xml · derivative · entry 7

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 110 shares

Expires not disclosed

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 · derivative.exercise_price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F3 · derivative.exercise_date: The RSUs vested on July 1, 2026.

F3 · derivative.expiration_date: The RSUs vested on July 1, 2026.

SEC source: 0001859690-26-000137 · form4.xml · derivative · entry 6

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,413

Underlying: Ordinary Shares · 2,082 shares

Expires not disclosed

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 · derivative.exercise_price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.

F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027.

SEC source: 0001859690-26-000137 · form4.xml · nonDerivative · entry 4

Willcocks Patrick · CIK 0001967211 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,471

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 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.