DUOL

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · derivative · entry 7

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 186,163

Underlying: Class A Common Stock · 12,000 shares

Expires 2030-03-10

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_date: 25% of the shares subject to the option vest on the first anniversary measured from February 24, 2020 (the "Vesting Commencement Date"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · nonDerivative · entry 6

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 56,141

F1 · kind: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 9, 2023.

F6 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $159.35 to $160.19, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · nonDerivative · entry 5

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,471

F1 · kind: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 9, 2023.

F5 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $158.34 to $159.30, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · nonDerivative · entry 4

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,571

F1 · kind: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 9, 2023.

F4 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $157.25 to $158.23, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · nonDerivative · entry 3

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 61,349

F1 · kind: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 9, 2023.

F3 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $156.25 to $157.19, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · nonDerivative · entry 2

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,402

F1 · kind: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 9, 2023.

F2 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $155.24 to $156.20, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000195 · wk-form4_1694469400.xml · nonDerivative · entry 1

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 71,994

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: 0001562088-23-000198 · wk-form4_1694569158.xml · derivative · entry 6

Chen Stephen C. · CIK 0001869758 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,176

Underlying: Class A Common Stock · 5,325 shares

Expires 2030-03-10

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: 25% of the shares subject to the option vest on the first anniversary measured from March 2, 2020 (the "Vesting Commencement Date"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0001562088-23-000198 · wk-form4_1694569158.xml · nonDerivative · entry 2

Chen Stephen C. · CIK 0001869758 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,021

F1 · kind: The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on June 5, 2023.

F2 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $160.00 to $160.58, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000198 · wk-form4_1694569158.xml · nonDerivative · entry 1

Chen Stephen C. · CIK 0001869758 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 41,346

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: 0001562088-23-000193 · wk-form4_1694047397.xml · derivative · entry 11

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 3,097,917

Underlying: Class A Common Stock · 10,000 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.

F9 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F9 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F9 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F10 · balance_after: The Form 4 filed on behalf of the Reporting Person on August 16, 2023 incorrectly attributed 28,230 shares of Class B common stock that were held directly by the Reporting Person to the SBH Trust. The Reporting Person direct and indirect holdings have been updated on this Form 4 to correct this.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 8

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 0

F8 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $152.33 to $152.38, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 7

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 200

F7 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $150.97 to $151.88, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 6

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 610

F6 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $149.85 to $150.31, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 5

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 1,110

F5 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $148.82 to $149.79, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 4

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 4,821

F4 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $147.82 to $148.78, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 3

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 8,600

F3 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $146.77 to $147.66, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 2

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 9,600

F2 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $145.47 to $146.29, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000193 · wk-form4_1694047397.xml · nonDerivative · entry 1

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · See footnote

Disclosed balance after: 10,000

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 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001387131-23-010700 · duol-form4_082923.xml · nonDerivative · entry 2

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,947,614

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001562088-23-000201 · wk-form4_1695154721.xml · derivative · entry 4

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,094,917

Underlying: Class A Common Stock · 3,000 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: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F3 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F3 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F2 · balance_after: The Reporting Person filed a Form 4 on September 6, 2023 that incorrectly reported the number of shares of Class A and Class B common stock held by the SBH Trust dated March 10, 2023. The amount reported in Column 5 of Table I and Column 9 of Table II represents the number of Class A shares and Class B shares, respectively, held by the SBH Trust as of the date hereof.

F1 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000201 · wk-form4_1695154721.xml · nonDerivative · entry 1

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,000

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 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001387131-23-010700 · duol-form4_082923.xml · nonDerivative · entry 1

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 4,087,636

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001562088-23-000186 · wk-form4_1692303343.xml · nonDerivative · entry 1

Skaruppa Matthew · CIK 0001869669 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,994

F1 · kind: Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs") and delivery of shares.

SEC source: 0001562088-23-000187 · wk-form4_1692303400.xml · nonDerivative · entry 1

Meese Robert · CIK 0001869668 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,104

F1 · kind: Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs") and delivery of shares.

SEC source: 0001562088-23-000189 · wk-form4_1692303489.xml · nonDerivative · entry 1

Chen Stephen C. · CIK 0001869758 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,021

F1 · kind: Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs") and delivery of shares.

SEC source: 0001562088-23-000188 · wk-form4_1692303444.xml · nonDerivative · entry 1

Glance Natalie · CIK 0001870350 · Chief Engineering Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,164

F1 · kind: Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs") and delivery of shares.

SEC source: 0001562088-23-000183 · wk-form4_1692234651.xml · derivative · entry 2

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,206,147

Underlying: Class A Common Stock · 31,770 shares

Expires not disclosed

F3 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F3 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F3 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F4 · ownership.nature: Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.

SEC source: 0001562088-23-000183 · wk-form4_1692234651.xml · derivative · entry 1

Hacker Severin · CIK 0001870272 · Director · Chief Tech Officer, Co-Founder · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 540,000

Underlying: Class B Common Stock · 60,000 shares

Expires 2031-06-21

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: Each Performance-Based Restricted Stock Unit ("PSU") represents a contingent right to receive one share of the Issuer's Class B Common Stock upon vesting. The PSUs vest upon the satisfaction of both a service-based condition and a performance-based condition. The service-based condition is satisfied as to 25% of the PSUs on each anniversary of the completion of the Issuer's initial public offering of Class A common stock based on the Reporting Person's continuous service as CTO to the Issuer through the applicable vesting dates, subject to acceleration upon a cessation of service as CTO as a result of death or permanent disability.

F2 · derivative.exercise_price: The performance-based condition will be satisfied upon the Issuer's Class A common stock achieving certain stock price hurdles over a period of ten years. Vested PSUs will be settled by the issuance of the underlying Class B Common Stock on the first anniversary of vesting, subject to acceleration upon a termination of employment or a change in control of the Issuer.

F1 · derivative.exercise_date: Each Performance-Based Restricted Stock Unit ("PSU") represents a contingent right to receive one share of the Issuer's Class B Common Stock upon vesting. The PSUs vest upon the satisfaction of both a service-based condition and a performance-based condition. The service-based condition is satisfied as to 25% of the PSUs on each anniversary of the completion of the Issuer's initial public offering of Class A common stock based on the Reporting Person's continuous service as CTO to the Issuer through the applicable vesting dates, subject to acceleration upon a cessation of service as CTO as a result of death or permanent disability.

F2 · derivative.exercise_date: The performance-based condition will be satisfied upon the Issuer's Class A common stock achieving certain stock price hurdles over a period of ten years. Vested PSUs will be settled by the issuance of the underlying Class B Common Stock on the first anniversary of vesting, subject to acceleration upon a termination of employment or a change in control of the Issuer.

SEC source: 0001562088-23-000182 · wk-form4_1692234623.xml · derivative · entry 2

von Ahn Luis · CIK 0001829259 · Director · President & CEO, Co-Founder · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,113,231

Underlying: Class A Common Stock · 51,768 shares

Expires not disclosed

F3 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F3 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

F3 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.

SEC source: 0001562088-23-000182 · wk-form4_1692234623.xml · derivative · entry 1

von Ahn Luis · CIK 0001829259 · Director · President & CEO, Co-Founder · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,080,000

Underlying: Class B Common Stock · 120,000 shares

Expires 2031-06-21

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: Each Performance-Based Restricted Stock Unit ("PSU") represents a contingent right to receive one share of the Issuer's Class B Common Stock upon vesting. The PSUs vest upon the satisfaction of both a service-based condition and a performance-based condition. The service-based condition is satisfied as to 25% of the PSUs on each anniversary of the completion of the Issuer's initial public offering of Class A common stock based on the Reporting Person's continuous service as CEO to the Issuer through the applicable vesting dates, subject to acceleration upon a cessation of service as CEO as a result of death or permanent disability.

F2 · derivative.exercise_price: The performance-based condition will be satisfied upon the Issuer's Class A common stock achieving certain stock price hurdles over a period of ten years. Vested PSUs will be settled by the issuance of the underlying Class B Common Stock on the first anniversary of vesting, subject to acceleration upon a termination of employment or a change in control of the Issuer.

F1 · derivative.exercise_date: Each Performance-Based Restricted Stock Unit ("PSU") represents a contingent right to receive one share of the Issuer's Class B Common Stock upon vesting. The PSUs vest upon the satisfaction of both a service-based condition and a performance-based condition. The service-based condition is satisfied as to 25% of the PSUs on each anniversary of the completion of the Issuer's initial public offering of Class A common stock based on the Reporting Person's continuous service as CEO to the Issuer through the applicable vesting dates, subject to acceleration upon a cessation of service as CEO as a result of death or permanent disability.

F2 · derivative.exercise_date: The performance-based condition will be satisfied upon the Issuer's Class A common stock achieving certain stock price hurdles over a period of ten years. Vested PSUs will be settled by the issuance of the underlying Class B Common Stock on the first anniversary of vesting, subject to acceleration upon a termination of employment or a change in control of the Issuer.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 7

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,109,387

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 6

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,109,787

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 5

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,114,491

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 4

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,114,702

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 3

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,121,096

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 2

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,137,269

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001209191-23-045461 · doc4.xml · nonDerivative · entry 1

Durable Capital Partners LP · CIK 0001798849 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote 1

Disclosed balance after: 4,142,592

F1 · ownership.nature: The securities are held directly by Durable Capital Master Fund LP ("Durable Capital Master Fund"). Durable Capital Partners LP ("Durable Capital") acts as the investment adviser to Durable Capital Master Fund and has sole voting power and sole investment power over the securities reported on this Form 4. Durable Capital Partners GP LLC ("Durable GP") is the general partner of Durable Capital, and Henry Ellenbogen is the chief investment officer of Durable Capital and the managing member of Durable GP. Each of Durable Capital Master Fund, Durable Capital, Durable GP and Mr. Ellenbogen disclaim beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein.

SEC source: 0001562088-23-000160 · wk-form4_1687296299.xml · nonDerivative · entry 1

GORDON WILLIAM B · CIK 0001229590 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,140

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000157 · wk-form4_1687296151.xml · nonDerivative · entry 1

Shelton James H · CIK 0001342646 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,253

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000154 · wk-form4_1687295966.xml · nonDerivative · entry 1

Bohutinsky Amy · CIK 0001524315 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,253

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000161 · wk-form4_1687296332.xml · nonDerivative · entry 1

Clemens Sara · CIK 0001600681 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,680

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000159 · wk-form4_1687296267.xml · nonDerivative · entry 1

Lilly III John Osborne · CIK 0001897305 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,630

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000158 · wk-form4_1687296189.xml · nonDerivative · entry 1

Munson Gillian · CIK 0001592494 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,635

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000155 · wk-form4_1687296001.xml · nonDerivative · entry 1

Sturdy Laela · CIK 0001678227 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,253

F1 · price: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of the Issuer's stockholders following the grant date, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001562088-23-000143 · wk-form4_1686860249.xml · derivative · entry 6

Shelton James H · CIK 0001342646 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Class A Common Stock · 10,000 shares

Expires 2030-09-23

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_date: 25% of the shares subject to the option vest annually measured from September 2, 2020 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.

SEC source: 0001562088-23-000143 · wk-form4_1686860249.xml · nonDerivative · entry 5

Shelton James H · CIK 0001342646 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,237

F1 · kind: The sales reported in this Form 4 were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on March 15, 2023.

F5 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $154.29 to $154.94, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000143 · wk-form4_1686860249.xml · nonDerivative · entry 4

Shelton James H · CIK 0001342646 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,733

F1 · kind: The sales reported in this Form 4 were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on March 15, 2023.

F4 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $153.26 to $154.24, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000143 · wk-form4_1686860249.xml · nonDerivative · entry 3

Shelton James H · CIK 0001342646 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,933

F1 · kind: The sales reported in this Form 4 were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on March 15, 2023.

F3 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $152.14 to $153.13, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.

SEC source: 0001562088-23-000143 · wk-form4_1686860249.xml · nonDerivative · entry 2

Shelton James H · CIK 0001342646 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,337

F1 · kind: The sales reported in this Form 4 were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on March 15, 2023.

F2 · price: The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $151.01 to $152.00, inclusive. The Reporting Person hereby 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 respective price within the range set forth in this footnote.