CRCL

SEC source: 0001876042-26-000036 · wk-form4_1772489093.xml · nonDerivative · entry 2

Fox-Geen Jeremy · CIK 0001818008 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 261,059

F1 · kind: The reported sale was made pursuant to a 10b5-1 trading plan.

F2 · balance_after: Represents 39,564 shares of Class A common stock held outright by the Reporting Person and 221,495 shares of Class A common stock subject to outstanding restricted stock units.

SEC source: 0001876042-26-000036 · wk-form4_1772489093.xml · nonDerivative · entry 1

Fox-Geen Jeremy · CIK 0001818008 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 308,967

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.

SEC source: 0001876042-26-000035 · wk-form4_1772489051.xml · derivative · entry 3

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 926,013

Underlying: Class A Common Stock · 2,000 shares

Expires 2033-09-02

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

F4 · derivative.exercise_date: 1/4 of the shares of Class A Common stock subject to the option award vested upon the one-year anniversary following the vesting commencement date and the remaining portion vest in 36 successive equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000035 · wk-form4_1772489051.xml · nonDerivative · entry 2

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 535,148

F1 · kind: The reported sale was made pursuant to a 10b5-1 trading plan.

F2 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.50, inclusive. The weighted average sale price was $90.14. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

F3 · balance_after: Represents 129,494 shares of Class A common stock held outright by the Reporting Person and 405,654 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000035 · wk-form4_1772489051.xml · nonDerivative · entry 1

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 545,901

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.

SEC source: 0001876042-26-000034 · wk-form4_1772488967.xml · nonDerivative · entry 1

Ostling Danita K · CIK 0001929125 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,790

SEC source: 0002060529-26-000001 · wk-form4_1772229792.xml · nonDerivative · entry 1

Horowitz Bradley · CIK 0002060529 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Dharma Revocable Living Trust

Disclosed balance after: 814

F1 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F1 · price: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F2 · ownership.nature: Represents shares of Class A common stock held through a revocable grantor living trust of which the Reporting Person and his spouse are co-trustees and co-beneficiaries. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock except to the extent of his pecuniary interest therein.

SEC source: 0001876042-26-000026 · wk-form4_1771624818.xml · nonDerivative · entry 1

Horowitz Bradley · CIK 0002060529 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Dharma Revocable Living Trust

Disclosed balance after: 697

F1 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F1 · price: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F2 · ownership.nature: Represents shares of Class A common stock held through a revocable grantor living trust of which the Reporting Person and his spouse are co-trustees and co-beneficiaries. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock except to the extent of his pecuniary interest therein.

SEC source: 0001876042-26-000018 · wk-form4_1770161786.xml · nonDerivative · entry 3

Schulz Tamara L · CIK 0001874409 · Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 98,010

F3 · kind: The reported sale was made pursuant to a 10b5-1 trading plan.

F4 · balance_after: Represents 17,181 shares of Class A common stock held outright by the reporting person and 80,829 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000018 · wk-form4_1770161786.xml · nonDerivative · entry 2

Schulz Tamara L · CIK 0001874409 · Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 99,537

F2 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

SEC source: 0001876042-26-000024 · wk-form4_1770242824.xml · nonDerivative · entry 1

Chandhok Nikhil · CIK 0002060495 · Chief Product & Tech. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 425,295

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 210,755 shares of Class A common stock held outright by the Reporting Person and 214,540 shares of Class A common stock subject to outstanding restricted stock units.

SEC source: 0001876042-26-000023 · wk-form4_1770242686.xml · nonDerivative · entry 1

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 543,901

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 138,247 shares of Class A common stock held outright by the Reporting Person and 405,654 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000021 · wk-form4_1770242548.xml · nonDerivative · entry 1

Fox-Geen Jeremy · CIK 0001818008 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 294,567

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 73,072 shares of Class A common stock held outright by the reporting person and 221,495 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000022 · wk-form4_1770242641.xml · nonDerivative · entry 1

Razzaghi Hossein · CIK 0002083179 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 639,064

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 488,003 shares of Class A common stock held outright by the reporting person and 151,061 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000020 · wk-form4_1770242507.xml · derivative · entry 10

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,852,979

Underlying: Class A Common Stock · 8,404 shares

Expires not disclosed

F6 · derivative.exercise_price: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F7 · kind: The shares of Class B common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F6 · derivative.exercise_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F6 · derivative.expiration_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

SEC source: 0001876042-26-000020 · wk-form4_1770242507.xml · derivative · entry 9

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,861,383

Underlying: Class A Common Stock · 15,193 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.

F6 · derivative.exercise_price: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F6 · derivative.exercise_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F6 · derivative.expiration_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

SEC source: 0001876042-26-000020 · wk-form4_1770242507.xml · derivative · entry 8

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,606

Underlying: Class A Common Stock · 6,017 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F5 · derivative.exercise_date: 1/4 of the shares subject to the restricted stock units vest on January 1, 2026 and the remaining portion vest in 36 substantially equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

F5 · derivative.expiration_date: 1/4 of the shares subject to the restricted stock units vest on January 1, 2026 and the remaining portion vest in 36 substantially equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000020 · wk-form4_1770242507.xml · derivative · entry 7

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 155,070

Underlying: Class A Common Stock · 6,742 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F4 · derivative.exercise_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2028, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

F4 · derivative.expiration_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2028, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000020 · wk-form4_1770242507.xml · derivative · entry 6

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,777

Underlying: Class A Common Stock · 2,434 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F3 · derivative.exercise_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2027, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

F3 · derivative.expiration_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2027, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000018 · wk-form4_1770161786.xml · nonDerivative · entry 1

Schulz Tamara L · CIK 0001874409 · Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,234

F1 · shares: The restricted stock units were granted on February 1, 2026, and vest in 16 substantially equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service with the Issuer through each applicable vesting date.

SEC source: 0001876042-26-000014 · wk-form4_1769810417.xml · nonDerivative · entry 1

Horowitz Bradley · CIK 0002060529 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Dharma Revocable Living Trust

Disclosed balance after: 579

F1 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F1 · price: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F2 · ownership.nature: Represents shares of Class A common stock held through a revocable grantor living trust of which the Reporting Person and his spouse are co-trustees and co-beneficiaries. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock except to the extent of his pecuniary interest therein.

SEC source: 0001876042-26-000012 · wk-form4_1768342050.xml · nonDerivative · entry 1

Horowitz Bradley · CIK 0002060529 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Dharma Revocable Living Trust

Disclosed balance after: 463

F1 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F1 · price: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F2 · ownership.nature: Represents shares of Class A common stock held through a revocable grantor living trust of which the Reporting Person and his spouse are co-trustees and co-beneficiaries. The Reporting person disclaims beneficial ownership of the shares of Class A common stock except to the extent of his pecuniary interest therein.

SEC source: 0001876042-26-000008 · wk-form4_1767737406.xml · derivative · entry 3

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 928,013

Underlying: Class A Common Stock · 3,985 shares

Expires 2033-09-02

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

F3 · derivative.exercise_date: 1/4 of the shares of Class A common stock subject to the option award vested upon the one-year anniversary following the vesting commencement date and the remaining portion vest in 36 successive equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000008 · wk-form4_1767737406.xml · nonDerivative · entry 2

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 551,890

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 · balance_after: Represents 128,741 shares of Class A common stock held outright by the Reporting Person and 423,149 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000004 · wk-form4_1767737241.xml · nonDerivative · entry 2

Schulz Tamara L · CIK 0001874409 · Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 82,679

F2 · kind: The reported sale was made pursuant to a 10b5-1 trading plan.

F3 · balance_after: Represents 17,181 shares of Class A common stock held outright by the reporting person and 65,498 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000008 · wk-form4_1767737406.xml · nonDerivative · entry 1

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 547,905

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

SEC source: 0001876042-26-000006 · wk-form4_1767737323.xml · nonDerivative · entry 1

Razzaghi Hossein · CIK 0002083179 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 640,781

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 486,174 shares of Class A common stock held outright by the reporting person and 154,607 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000007 · wk-form4_1767737369.xml · nonDerivative · entry 1

Fox-Geen Jeremy · CIK 0001818008 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 298,444

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 68,835 shares of Class A common stock held outright by the reporting person and 229,609 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-26-000005 · wk-form4_1767737284.xml · derivative · entry 3

Neville Patrick Sean · CIK 0002060511 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,336,356

Underlying: Class A Common Stock · 7,060 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: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F4 · derivative.exercise_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F4 · derivative.expiration_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

SEC source: 0001876042-26-000005 · wk-form4_1767737284.xml · derivative · entry 2

Neville Patrick Sean · CIK 0002060511 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class B Common Stock · 7,060 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F3 · derivative.exercise_date: The restricted stock units are fully vested.

F3 · derivative.expiration_date: The restricted stock units are fully vested.

SEC source: 0001876042-26-000004 · wk-form4_1767737241.xml · nonDerivative · entry 1

Schulz Tamara L · CIK 0001874409 · Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 87,117

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

SEC source: 0001876042-26-000003 · wk-form4_1767737063.xml · derivative · entry 11

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,846,190

Underlying: Class A Common Stock · 44,140 shares

Expires not disclosed

F7 · derivative.exercise_price: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F8 · kind: The shares of Class B common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F7 · derivative.exercise_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F7 · derivative.expiration_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

SEC source: 0001876042-26-000003 · wk-form4_1767737063.xml · derivative · entry 10

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,890,330

Underlying: Class A Common Stock · 83,018 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.

F7 · derivative.exercise_price: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F7 · derivative.exercise_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

F7 · derivative.expiration_date: Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire.

SEC source: 0001876042-26-000003 · wk-form4_1767737063.xml · derivative · entry 9

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,623

Underlying: Class A Common Stock · 72,208 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F6 · derivative.exercise_date: 1/4 of the shares subject to the restricted stock units vest on January 1, 2026 and the remaining portion vest in 36 substantially equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

F6 · derivative.expiration_date: 1/4 of the shares subject to the restricted stock units vest on January 1, 2026 and the remaining portion vest in 36 substantially equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000003 · wk-form4_1767737063.xml · derivative · entry 8

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,812

Underlying: Class A Common Stock · 6,742 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F5 · derivative.exercise_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2028, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

F5 · derivative.expiration_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2028, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000003 · wk-form4_1767737063.xml · derivative · entry 7

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,211

Underlying: Class A Common Stock · 2,434 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F4 · derivative.exercise_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2027, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

F4 · derivative.expiration_date: The restricted stock units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2027, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-26-000003 · wk-form4_1767737063.xml · derivative · entry 6

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,634 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: Each restricted stock unit represents a contingent right to receive one share of Class B common stock.

F3 · derivative.exercise_date: The restricted stock units are fully vested.

F3 · derivative.expiration_date: The restricted stock units are fully vested.

SEC source: 0001876042-26-000002 · wk-form4_1767736937.xml · nonDerivative · entry 1

Chandhok Nikhil · CIK 0002060495 · Chief Product & Tech. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 439,774

F1 · kind: The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.

F2 · balance_after: Represents 196,830 shares of Class A common stock held outright by the Reporting Person and 242,944 shares of Class A common stock subject to outstanding restricted stock units.

SEC source: 0001876042-25-000086 · wk-form4_1766527354.xml · nonDerivative · entry 1

Tarbert Heath · CIK 0002060670 · President

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 579,302

F1 · kind: The reported sale was made pursuant to a 10b5-1 trading plan.

F2 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.18, inclusive. The weighted average sale price was $90.02. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

F3 · balance_after: Represents 83,499 shares of Class A common stock held outright by the Reporting Person and 495,803 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-25-000085 · wk-form4_1766527306.xml · derivative · entry 3

Chandhok Nikhil · CIK 0002060495 · Chief Product & Tech. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,149,677

Underlying: Class A Common Stock · 10,000 shares

Expires 2032-02-04

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_date: 1/4 of the shares of Class A Common stock subject to the option award vested upon the one-year anniversary following the vesting commencement date and the remaining portion vest in 36 successive equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-25-000085 · wk-form4_1766527306.xml · nonDerivative · entry 2

Chandhok Nikhil · CIK 0002060495 · Chief Product & Tech. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 474,974

F1 · kind: The reported sale was made pursuant to a 10b5-1 trading plan.

F2 · balance_after: Represents 159,499 shares of Class A common stock held outright by the Reporting Person and 315,475 shares of Class A common stock subject to outstanding restricted stock units.

SEC source: 0001876042-25-000085 · wk-form4_1766527306.xml · nonDerivative · entry 1

Chandhok Nikhil · CIK 0002060495 · Chief Product & Tech. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 484,974

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.

SEC source: 0001876042-25-000084 · wk-form4_1766527253.xml · nonDerivative · entry 5

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Spruce Trust

Disclosed balance after: 66,757

F1 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.13, inclusive. The weighted average sale price was $90.07. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · ownership.nature: Represents shares of Class A common stock held through an irrevocable non-grantor trust, of which the Reporting Person's legal counsel is the sole trustee and the Reporting Person's child is the beneficiary. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock.

SEC source: 0001876042-25-000084 · wk-form4_1766527253.xml · nonDerivative · entry 4

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Beech Trust

Disclosed balance after: 66,757

F1 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.13, inclusive. The weighted average sale price was $90.07. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · ownership.nature: Represents shares of Class A common stock held through an irrevocable non-grantor trust, of which the Reporting Person's legal counsel is the sole trustee and the Reporting Person's child is the beneficiary. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock.

SEC source: 0001876042-25-000084 · wk-form4_1766527253.xml · nonDerivative · entry 3

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Chestnut Trust

Disclosed balance after: 66,757

F1 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.13, inclusive. The weighted average sale price was $90.07. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · ownership.nature: Represents shares of Class A common stock held through an irrevocable non-grantor trust, of which the Reporting Person's legal counsel is the sole trustee and the Reporting Person's child is the beneficiary. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock.

SEC source: 0001876042-25-000084 · wk-form4_1766527253.xml · nonDerivative · entry 2

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Oak Trust

Disclosed balance after: 66,761

F1 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.13, inclusive. The weighted average sale price was $90.07. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

F2 · ownership.nature: Represents shares of Class A common stock held through an irrevocable non-grantor trust, of which the Reporting Person's legal counsel is the sole trustee and the Reporting Person's child is the beneficiary. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock.

SEC source: 0001876042-25-000084 · wk-form4_1766527253.xml · nonDerivative · entry 1

Allaire Jeremy · CIK 0001539940 · Director · Chairman and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,517

F1 · price: These shares were sold in multiple transactions at prices ranging from $90.00 to $90.13, inclusive. The weighted average sale price was $90.07. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001876042-25-000080 · wk-form4_1766181902.xml · derivative · entry 2

Fox-Geen Jeremy · CIK 0001818008 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,181,606

Underlying: Class A Common Stock · 39,564 shares

Expires 2031-05-19

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_date: 1/4 of the shares of Class A Common stock subject to the option award vested upon the one-year anniversary following the vesting commencement date and the remaining portion vest in 36 successive equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date.

SEC source: 0001876042-25-000080 · wk-form4_1766181902.xml · nonDerivative · entry 1

Fox-Geen Jeremy · CIK 0001818008 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 321,737

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 · balance_after: Represents 39,564 shares of Class A common stock held outright by the Reporting Person and 282,173 shares of Class A common stock issuable upon the vesting of restricted stock units.

SEC source: 0001876042-25-000073 · wk-form4_1765922630.xml · nonDerivative · entry 1

Horowitz Bradley · CIK 0002060529 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Dharma Revocable Living Trust

Disclosed balance after: 346

F1 · kind: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F1 · price: Represents a pro-rata in kind distribution of shares of the Issuer's Class A common stock by Accel XI Strategic Partners L.P. to its limited partners, including the Reporting Person's affiliated entity, the Dharma Revocable Living Trust without additional consideration.

F2 · ownership.nature: Represents shares of Class A common stock held through a revocable grantor living trust of which the Reporting Person and his spouse are co-trustees and co-beneficiaries. The Reporting person disclaims beneficial ownership of the shares of Class A common stock except to the extent of his pecuniary interest therein.