ARTV

SEC source: 0001193125-25-317980 · ownership.xml · derivative · entry 6

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 113,999 shares

Expires 2034-05-01

F2 · price: On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I.

F6 · derivative.exercise_date: 25% of the shares will vest on July 19, 2025, and the remaining shares vest in 36 equal monthly installments thereafter.

SEC source: 0001193125-25-317980 · ownership.xml · derivative · entry 5

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 26,450 shares

Expires 2034-01-23

F2 · price: On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I.

F5 · derivative.exercise_date: Vesting is monthly over a 48-month period starting January 1, 2024 in equal monthly amounts.

SEC source: 0001193125-25-317980 · ownership.xml · derivative · entry 4

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 257,319 shares

Expires 2030-12-17

F2 · price: On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I.

F4 · derivative.exercise_date: 25% of the shares vest on January 1, 2022, and the remaining shares vest in 36 equal monthly installments thereafter.

SEC source: 0001193125-25-317980 · ownership.xml · derivative · entry 3

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 51,463 shares

Expires 2030-12-17

F2 · price: On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I.

F3 · derivative.exercise_date: 25% of the shares vested on February 22, 2022, and the remaining shares vest in 36 equal monthly installments thereafter.

SEC source: 0001193125-25-317980 · ownership.xml · derivative · entry 2

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 100,577 shares

Expires 2031-02-23

F2 · price: On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I.

F3 · derivative.exercise_date: 25% of the shares vested on February 22, 2022, and the remaining shares vest in 36 equal monthly installments thereafter.

SEC source: 0001193125-25-317980 · ownership.xml · nonDerivative · entry 1

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,213,135

F1 · shares: Represents restricted stock units award granted under the Issuer's 2024 Equity Incentive Plan ("RSUs").

F2 · price: On December 12, 2025, the Issuer cancelled, pursuant to an option exchange, the options listed in Table II. In exchange for the cancelled options, the Reporting Person received the RSUs reported in Table I.

SEC source: 0001193125-25-285004 · ownership.xml · nonDerivative · entry 2

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 343,999

F2 · kind: The reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on July 23, 2024.

F3 · price: The weighted average sale price for the transaction reported was $3.376, and the range of prices were between $3.19 and $3.53. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0001193125-25-285009 · ownership.xml · nonDerivative · entry 1

Raymon Heather · CIK 0002028466 · SVP, Research and Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,591

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001193125-25-285005 · ownership.xml · nonDerivative · entry 1

Krishnamohan Neha · CIK 0001866171 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,356

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001193125-25-285008 · ownership.xml · nonDerivative · entry 1

Horan Christopher · CIK 0001736819 · Chief Tech Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,183

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001193125-25-285006 · ownership.xml · nonDerivative · entry 1

Bush Jennifer · CIK 0001621152 · COO, CLO, Secy, Compliance Off

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,048

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001193125-25-285004 · ownership.xml · nonDerivative · entry 1

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 350,374

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001909362-25-000004 · form4-10182025_121003.xml · nonDerivative · entry 1

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 356,721

F1 · kind: Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on July 23, 2024.

SEC source: 0001415889-25-022223 · form4-08182025_080807.xml · nonDerivative · entry 2

Raymon Heather · CIK 0002028466 · SVP, Research and Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,966

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022222 · form4-08182025_080805.xml · nonDerivative · entry 2

Krishnamohan Neha · CIK 0001866171 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,846

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022224 · form4-08182025_080810.xml · nonDerivative · entry 3

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 382,221

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022224 · form4-08182025_080810.xml · nonDerivative · entry 2

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 386,693

F2 · shares: Represents shares sold pursuant to a Rule 10b5-1 Plan adopted on July 23, 2024, to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

F3 · price: The weighted average sale price for the transaction reported was $2.7286, and the range of prices were between $2.60 and $2.80. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0001415889-25-022221 · form4-08182025_080803.xml · nonDerivative · entry 2

Bush Jennifer · CIK 0001621152 · COO, CLO, Secy, Compliance Off

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,103

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022220 · form4-08182025_080801.xml · nonDerivative · entry 2

Horan Christopher · CIK 0001736819 · Chief Tech Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,082

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-018277 · form4-06262025_040606.xml · derivative · entry 1

HOUGEN ELIZABETH L · CIK 0001074773 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: The shares subject to the option will vest in full on the earlier of June 24, 2026, or the date of the Issuer's 2026 annual stockholder meeting.

SEC source: 0001415889-25-018278 · form4-06262025_040608.xml · derivative · entry 1

Baker Daniel G. · CIK 0002046802 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: The shares subject to the option will vest in full on the earlier of June 24, 2026, or the date of the Issuer's 2026 annual stockholder meeting.

SEC source: 0001415889-25-018280 · form4-06262025_040612.xml · derivative · entry 1

Stoppel Laura · CIK 0001865119 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: The shares subject to the option will vest in full on the earlier of June 24, 2026, or the date of the Issuer's 2026 annual stockholder meeting.

F2 · ownership.direct: Under the Reporting Person's arrangement with RA Capital Management, L.P. (the "Adviser"), the Reporting Person holds the option for the benefit of the R.A. Capital Healthcare Fund, L.P. (the "Fund"), the R.A. Capital Nexus Fund, L.P. (the "Nexus Fund"), the RA Capital Nexus Fund III, L.P. (the "Nexus Fund III") and a separately managed account (the "Account"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund, the Nexus Fund, the Nexus Fund III and the Account to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the option and underlying common stock.

SEC source: 0001415889-25-018284 · form4-06262025_080614.xml · derivative · entry 1

RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner

RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner

RA Capital Nexus Fund, L.P. · CIK 0001780117 · Director

RA Capital Nexus Fund III, L.P. · CIK 0001883840 · Director

Kolchinsky Peter · CIK 0001384859 · Director · 10% owner

Shah Rajeev M. · CIK 0001619841 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: Represents the grant of a stock option to Laura Stoppel pursuant to the Issuer's non-employee director compensation policy. The shares subject to the option will vest on the earlier of June 24, 2026 or the date of the Issuer's 2026 annual stockholder meeting, subject to Dr. Stoppel's continuous service as a director through such vesting date.

F2 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund"), RA Capital Nexus Fund, L.P. (the "Nexus Fund"), RA Capital Nexus Fund III, L.P. (the "Nexus Fund III"), and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, the Fund, the Nexus Fund, the Nexus Fund III, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of its or his pecuniary interest therein.

F3 · ownership.nature: Laura Stoppel is a Partner of the Adviser who serves on the Issuer's board of directors. Under Dr. Stoppel's arrangement with the Adviser, Dr. Stoppel holds the option for the benefit of the Fund, the Nexus Fund, the Nexus Fund III and the Account. Dr. Stoppel is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund, the Nexus Fund, the Nexus Fund III and the Account to the Adviser. The Reporting Persons therefore disclaim beneficial ownership of the option and underlying common stock.

SEC source: 0001415889-25-018279 · form4-06262025_040610.xml · derivative · entry 1

MOORE ALISON · CIK 0001754937 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: The shares subject to the option will vest in full on the earlier of June 24, 2026, or the date of the Issuer's 2026 annual stockholder meeting.

SEC source: 0001415889-25-018276 · form4-06262025_040604.xml · derivative · entry 1

Miralles Gines Diego · CIK 0001773413 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: The shares subject to the option will vest in full on the earlier of June 24, 2026, or the date of the Issuer's 2026 annual stockholder meeting.

SEC source: 0001415889-25-018275 · form4-06262025_040601.xml · derivative · entry 1

DANIELS BRIAN · CIK 0001428698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750

Underlying: Common Stock · 13,750 shares

Expires 2035-06-23

F1 · derivative.exercise_date: The shares subject to the option will vest in full on the earlier of June 24, 2026, or the date of the Issuer's 2026 annual stockholder meeting.

SEC source: 0001415889-25-022223 · form4-08182025_080807.xml · nonDerivative · entry 1

Raymon Heather · CIK 0002028466 · SVP, Research and Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,605

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022222 · form4-08182025_080805.xml · nonDerivative · entry 1

Krishnamohan Neha · CIK 0001866171 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,659

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022224 · form4-08182025_080810.xml · nonDerivative · entry 1

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 412,193

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022221 · form4-08182025_080803.xml · nonDerivative · entry 1

Bush Jennifer · CIK 0001621152 · COO, CLO, Secy, Compliance Off

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,512

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-022220 · form4-08182025_080801.xml · nonDerivative · entry 1

Horan Christopher · CIK 0001736819 · Chief Tech Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,659

F1 · shares: Represents shares withheld by the Issuer to satisfy income tax obligations associated with the vesting of restricted stock unit awards.

SEC source: 0001415889-25-011379 · form4-04252025_090459.xml · derivative · entry 2

Banerjee Subhashis · CIK 0002065633 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Common Stock · 80,000 shares

Expires 2035-04-07

F2 · derivative.exercise_date: 25% of the shares initially subject to the option will vest and become exercisable on April 8, 2026, and the balance of the shares subject to the option shall vest and become exercisable at a rate of 1/36th per month over the following 36 months.

SEC source: 0001415889-25-011379 · form4-04252025_090459.xml · nonDerivative · entry 1

Banerjee Subhashis · CIK 0002065633 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-25-007431 · form4-03072025_090355.xml · nonDerivative · entry 1

Aslan Fred · CIK 0001909362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 416,665

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

F2 · balance_after: Reflects reduction in the number of shares subject to the RSU granted on July 22, 2024 from 228,905 shares to 216,665 shares. The equity award was originally calculated based on the maximum offering size of the Company's initial public offering (IPO) and such award was subsequently adjusted following the partial exercise of the underwriters option to purchase additional shares in connection with the IPO.

SEC source: 0001415889-25-006037 · form4-02282025_050211.xml · nonDerivative · entry 1

Raymon Heather · CIK 0002028466 · SVP, Research and Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,350

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-25-006034 · form4-02282025_050204.xml · nonDerivative · entry 1

Krishnamohan Neha · CIK 0001866171 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-25-006035 · form4-02282025_050206.xml · nonDerivative · entry 1

Horan Christopher · CIK 0001736819 · Chief Tech Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-25-006036 · form4-02282025_050209.xml · nonDerivative · entry 1

Graef Thorsten · CIK 0001581192 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-25-006033 · form4-02282025_050201.xml · nonDerivative · entry 1

Bush Jennifer · CIK 0001621152 · COO, CLO, Secy, Compliance Off

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 159,449

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-25-002273 · form4-01292025_090134.xml · derivative · entry 1

Baker Daniel G. · CIK 0002046802 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,500

Underlying: Common Stock · 27,500 shares

Expires 2035-01-27

F1 · derivative.exercise_date: One-third of the shares vested following the grant date, with the remaining shares vesting monthly over an additional two years following January 28, 2025,

SEC source: 0001415889-24-025537 · form4-10232024_121029.xml · derivative · entry 1

MOORE ALISON · CIK 0001754937 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,500

Underlying: Common Stock · 27,500 shares

Expires 2034-10-20

F1 · derivative.exercise_date: One-third of the shares vested following the grant date, with the remaining shares vesting monthly over an additional two years following October 21, 2024,

SEC source: 0001415889-24-023364 · form4-09132024_040911.xml · nonDerivative · entry 1

Raymon Heather · CIK 0002028466 · SVP, Research and Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-24-023361 · form4-09132024_040906.xml · nonDerivative · entry 1

Krishnamohan Neha · CIK 0001866171 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-24-023363 · form4-09132024_040909.xml · nonDerivative · entry 1

Graef Thorsten · CIK 0001581192 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-24-023362 · form4-09132024_040908.xml · nonDerivative · entry 1

Horan Christopher · CIK 0001736819 · Chief Tech Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,000

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-24-023360 · form4-09132024_040904.xml · nonDerivative · entry 1

Bush Jennifer · CIK 0001621152 · COO, CLO, Secy, Compliance Off

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,799

F1 · shares: Represents restricted stock unit award granted under the Issuer's 2024 Equity Incentive Plan.

SEC source: 0001415889-24-019907 · form4-07232024_120735.xml · derivative · entry 12

GC Corp. · CIK 0001931382 · 10% owner

GC Cell Corp · CIK 0001931891 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By GC Cell Corporation

Disclosed balance after: 0

Underlying: Common Stock · 62,181 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F5 · ownership.nature: The shares are held directly by GC Cell Corporation. GC Corp., a public Korean holdings company, is the parent company of GC Cell Corporation and is ultimately controlled by its board of directors, consisting of Mr. Yong-Jun Huh, Huh II-Sup, Park Yong-Tae and Kim Seok-Hwa. Each of these individual directors of GC Corp. may be deemed to share voting and investment power over the shares held by GC Corp. and GC Cell Corporation and each disclaims beneficial ownership of all shares held by such entities, except to the extent of any pecuniary interest therein.

SEC source: 0001415889-24-019907 · form4-07232024_120735.xml · derivative · entry 11

GC Corp. · CIK 0001931382 · 10% owner

GC Cell Corp · CIK 0001931891 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By GC Cell Corporation

Disclosed balance after: 0

Underlying: Common Stock · 292,791 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F5 · ownership.nature: The shares are held directly by GC Cell Corporation. GC Corp., a public Korean holdings company, is the parent company of GC Cell Corporation and is ultimately controlled by its board of directors, consisting of Mr. Yong-Jun Huh, Huh II-Sup, Park Yong-Tae and Kim Seok-Hwa. Each of these individual directors of GC Corp. may be deemed to share voting and investment power over the shares held by GC Corp. and GC Cell Corporation and each disclaims beneficial ownership of all shares held by such entities, except to the extent of any pecuniary interest therein.

SEC source: 0001415889-24-019907 · form4-07232024_120735.xml · derivative · entry 10

GC Corp. · CIK 0001931382 · 10% owner

GC Cell Corp · CIK 0001931891 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 330,095 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F2 · ownership.direct: GC Corp., a public Korean holdings company, is ultimately controlled by its board of directors, consisting of Mr. Yong-Jun Huh, Huh II-Sup, Park Yong-Tae and Kim Seok-Hwa. Each of these individual directors of GC Corp. may be deemed to share voting and investment power over the shares held by GC Corp. and each disclaims beneficial ownership of all shares held by CG Corp., except to the extent of any pecuniary interest therein.

SEC source: 0001415889-24-019907 · form4-07232024_120735.xml · derivative · entry 9

GC Corp. · CIK 0001931382 · 10% owner

GC Cell Corp · CIK 0001931891 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 667,185 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · price: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Stock") converted into shares of Common Stock of the Issuer on a one-for-one basis without payment of further consideration. Upon the closing of the Issuer's initial public offering (the "IPO"), the Preferred Stock was converted into the number of shares of Common Stock of the Issuer shown in column 7 of Table II. The Preferred Stock had no expiration date.

F2 · ownership.direct: GC Corp., a public Korean holdings company, is ultimately controlled by its board of directors, consisting of Mr. Yong-Jun Huh, Huh II-Sup, Park Yong-Tae and Kim Seok-Hwa. Each of these individual directors of GC Corp. may be deemed to share voting and investment power over the shares held by GC Corp. and each disclaims beneficial ownership of all shares held by CG Corp., except to the extent of any pecuniary interest therein.