LYEL

SEC source: 0001209191-23-046267 · doc4.xml · nonDerivative · entry 1

Klausner Richard · CIK 0001591178 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Grantor

Disclosed balance after: 930,880

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.275 to $2.285, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F2 · ownership.nature: Consists of 245,515 shares held by The Ariella Klausner Delaware Trust, 194,335 shares held by The Eli Klausner Delaware Trust, 245,515 shares held by The Isaac Klausner Delaware Trust, and 245,515 shares held by The Olivia Klausner Delaware Trust. The Reporting Person is a grantor of each of the trusts and disclaims beneficial ownership of all shares held by the trusts except to any pecuniary interest therein. Raymond James Trust Services of Delaware is the trustee of each of the trusts.

SEC source: 0001209191-23-045439 · doc4.xml · derivative · entry 1

Lang Matthew · CIK 0001712069 · Chief Business Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,250,000

Underlying: Common Stock · 2,250,000 shares

Expires 2033-08-09

F1 · derivative.exercise_date: 1/4 of the option shares shall vest on July 1, 2024, with the remaining option shares to vest in equal monthly installments over the following thirty-six months.

SEC source: 0001209191-23-038449 · doc4.xml · derivative · entry 1

RIEFLIN WILLIAM JL · CIK 0001182471 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-038445 · doc4.xml · derivative · entry 3

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F3 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-038441 · doc4.xml · derivative · entry 1

NABEL ELIZABETH G · CIK 0001619929 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-038439 · doc4.xml · derivative · entry 3

Klausner Richard · CIK 0001591178 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F2 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-038437 · doc4.xml · derivative · entry 3

FRIEDMAN CATHY · CIK 0001411874 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F3 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-038435 · doc4.xml · derivative · entry 1

BRAWLEY OTIS W · CIK 0001213029 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-038433 · doc4.xml · derivative · entry 2

Bishop Hans Edgar · CIK 0001480212 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2033-06-15

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 16, 2023 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be re-elected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 16, 2023, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-23-013848 · doc4.xml · derivative · entry 2

Albertson Tina M. · CIK 0001917391 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 700,000

Underlying: Common Stock · 700,000 shares

Expires 2033-02-23

F2 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2023, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-23-013850 · doc4.xml · derivative · entry 2

Hill Stephen J. · CIK 0001866154 · Chief Technical Ops. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 900,000

Underlying: Common Stock · 900,000 shares

Expires 2033-02-23

F2 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2023, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-23-013836 · doc4.xml · derivative · entry 2

Newton Charles W. · CIK 0001866219 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 700,000

Underlying: Common Stock · 700,000 shares

Expires 2033-02-23

F2 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2023, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-23-013844 · doc4.xml · derivative · entry 2

Lee Gary K. · CIK 0001907345 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 600,000

Underlying: Common Stock · 600,000 shares

Expires 2033-02-23

F2 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2023, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-23-013839 · doc4.xml · derivative · entry 1

Thompson Rahsaan · CIK 0001788524 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 245,000

Underlying: Common Stock · 245,000 shares

Expires 2033-02-23

F1 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2023, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-22-061898 · doc4.xml · derivative · entry 1

Seely Lynn · CIK 0001327111 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500,000

Underlying: Common Stock · 7,500,000 shares

Expires 2032-12-14

F1 · derivative.exercise_date: Twenty-five (25) percent of the shares subject to the option shall vest on December 15, 2023 and 1/48th of the shares subject to the option shall vest in equal monthly installments thereafter until all shares are vested, subject to the reporting person remaining an employee of the Issuer on each applicable vesting date.

SEC source: 0001209191-22-053457 · doc4.xml · derivative · entry 1

Thompson Rahsaan · CIK 0001788524 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 715,000

Underlying: Common Stock · 715,000 shares

Expires 2032-10-09

F1 · derivative.exercise_date: 1/4 of the option shares shall vest on September 28, 2023, with the remaining option shares to vest in equal monthly installments over the following thirty-six months.

SEC source: 0001209191-22-051379 · doc4.xml · nonDerivative · entry 1

Klausner Richard · CIK 0001591178 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Grantor

Disclosed balance after: 988,900

F1 · ownership.nature: Consists of 250,000 shares held by The Ariella Klausner Delaware Trust, 238,900 shares held by The Eli Klausner Delaware Trust, 250,000 shares held by The Isaac Klausner Delaware Trust, and 250,000 shares held by The Olivia Klausner Delaware Trust. The Reporting Person is a grantor of each of the trusts and disclaims beneficial ownership of all shares held by the trusts except to any pecuniary interest therein. Raymond James Trust Services of Delaware is the trustee of each of the trusts.

SEC source: 0001209191-22-049299 · doc4.xml · derivative · entry 2

Bishop Hans Edgar · CIK 0001480212 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,230

Underlying: Common Stock · 145,380 shares

Expires 2028-11-05

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_date: 1/4 of the option shares vested on September 20, 2019, with the remaining option shares to vest in equal monthly installments over the following thirty-six months. The option provides for an early-exercise provision and is exercisable as to unvested shares, subject to the Issuer's right of repurchase.

SEC source: 0001209191-22-049299 · doc4.xml · nonDerivative · entry 1

Bishop Hans Edgar · CIK 0001480212 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,685,614

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: 0001209191-22-035879 · doc4.xml · derivative · entry 1

RIEFLIN WILLIAM JL · CIK 0001182471 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035872 · doc4.xml · derivative · entry 3

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F3 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035866 · doc4.xml · derivative · entry 1

Seely Lynn · CIK 0001327111 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035858 · doc4.xml · derivative · entry 1

NABEL ELIZABETH G · CIK 0001619929 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035846 · doc4.xml · derivative · entry 2

Bishop Hans Edgar · CIK 0001480212 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be re-elected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035853 · doc4.xml · derivative · entry 1

BRAWLEY OTIS W · CIK 0001213029 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F1 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035837 · doc4.xml · derivative · entry 3

FRIEDMAN CATHY · CIK 0001411874 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F3 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-035825 · doc4.xml · derivative · entry 3

Klausner Richard · CIK 0001591178 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2032-06-07

F2 · derivative.exercise_date: The option shares shall vest on the earlier of (a) the date of the next annual meeting of the stockholders that occurs following June 8, 2022 (or the date immediately prior to such date if the Reporting Person's service as a director ends at such annual meeting due to the Reporting Person's failure to be reelected or the Reporting Person not standing for re-election); or (b) the first anniversary of June 8, 2022, subject to the Reporting Person providing continuous service through such date.

SEC source: 0001209191-22-020006 · doc4.xml · derivative · entry 1

Newton Charles W. · CIK 0001866219 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 500,000

Underlying: Common Stock · 500,000 shares

Expires 2032-03-15

F1 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2022, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-22-020004 · doc4.xml · derivative · entry 1

Homans Elizabeth · CIK 0001866220 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,479,500

Underlying: Common Stock · 1,479,500 shares

Expires 2032-03-15

F1 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2022, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-22-020001 · doc4.xml · derivative · entry 1

Hill Stephen J. · CIK 0001866154 · Chief Technical Ops. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 700,000

Underlying: Common Stock · 700,000 shares

Expires 2032-03-15

F1 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2022, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-22-020008 · doc4.xml · derivative · entry 1

Turner Heather D · CIK 0001403571 · Chief General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 300,000

Underlying: Common Stock · 300,000 shares

Expires 2032-03-15

F1 · derivative.exercise_date: 12.5% of the option shares shall vest on August 9, 2022, with the remaining option shares to vest in equal monthly installments over the following forty-two months.

SEC source: 0001209191-22-013118 · doc4.xml · derivative · entry 2

Bishop Hans Edgar · CIK 0001480212 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 169,610

Underlying: Common Stock · 993,428 shares

Expires 2028-11-05

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_date: 1/4 of the option shares vested on September 20, 2019, with the remaining option shares to vest in equal monthly installments over the following thirty-six months. The option provides for an early-exercise provision and is exercisable as to unvested shares, subject to the Issuer's right of repurchase.

SEC source: 0001209191-22-013118 · doc4.xml · nonDerivative · entry 1

Bishop Hans Edgar · CIK 0001480212 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,540,234

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: 0001209191-22-009580 · doc4.xml · derivative · entry 1

Lee Gary K. · CIK 0001907345 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 800,000

Underlying: Common Stock · 800,000 shares

Expires 2032-02-10

F1 · derivative.exercise_date: 1/4 of the option shares shall vest on January 31, 2023, with the remaining option shares to vest in equal monthly installments over the following thirty-six months.

SEC source: 0001209191-21-069485 · doc4.xml · nonDerivative · entry 2

FRIEDMAN CATHY · CIK 0001411874 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · MSL FBO J DUANE & C FRIEDMAN TTEE DUANE FAMILY TRUST

Disclosed balance after: 236,370

F2 · ownership.nature: Received in a pro-rata distribution from Lyell Investors, LLC. The Reporting Person is a trustee of MSL FBO J DUANE & C FRIEDMAN TTEE DUANE FAMILY TRUST ("Duane Family Trust") and therefore may be deemed to share the power to direct the disposition and vote of the shares held by the Duane Family Trust. The Reporting Person disclaims beneficial ownership of all shares held by Duane Family Trust except to any pecuniary interest therein.

SEC source: 0001209191-21-069485 · doc4.xml · nonDerivative · entry 1

FRIEDMAN CATHY · CIK 0001411874 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Lyell Investors, LLC

Disclosed balance after: 0

F1 · ownership.nature: Pro-rata distribution by Lyell Investors, LLC to its members.

SEC source: 0001209191-21-055899 · doc4.xml · derivative · entry 1

Homans Elizabeth · CIK 0001866220 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,370,469

Underlying: Common Stock · 1,370,469 shares

Expires 2031-09-12

F1 · derivative.exercise_date: The shares vest in equal monthly installments over the forty-eight months following September 13, 2021.

SEC source: 0001387131-21-006822 · gsk-form4_062121.xml · derivative · entry 2

GLAXOSMITHKLINE PLC · CIK 0001131399 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 30,253,189 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Series AA Preferred Stock automatically converted into common stock on a 1-for-1 basis into the number of shares of common stock shown in Column 7 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · price: The Series AA Preferred Stock automatically converted into common stock on a 1-for-1 basis into the number of shares of common stock shown in Column 7 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: The Series AA Preferred Stock automatically converted into common stock on a 1-for-1 basis into the number of shares of common stock shown in Column 7 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: The Series AA Preferred Stock automatically converted into common stock on a 1-for-1 basis into the number of shares of common stock shown in Column 7 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: The shares reported herein are held of record by Glaxo Group Limited, an indirect, wholly-owned subsidiary of GlaxoSmithKline plc (the "Reporting Person").

SEC source: 0001387131-21-006822 · gsk-form4_062121.xml · nonDerivative · entry 1

GLAXOSMITHKLINE PLC · CIK 0001131399 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 30,253,189

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

F1 · price: The Series AA Preferred Stock automatically converted into common stock on a 1-for-1 basis into the number of shares of common stock shown in Column 7 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: The shares reported herein are held of record by Glaxo Group Limited, an indirect, wholly-owned subsidiary of GlaxoSmithKline plc (the "Reporting Person").

SEC source: 0000899243-21-025523 · doc4.xml · derivative · entry 6

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX Overage, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 435,142 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

SEC source: 0000899243-21-025523 · doc4.xml · derivative · entry 5

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 435,142 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

SEC source: 0000899243-21-025523 · doc4.xml · derivative · entry 4

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX Overage, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 17,771,216 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

SEC source: 0000899243-21-025523 · doc4.xml · derivative · entry 3

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 17,771,216 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

SEC source: 0000899243-21-025523 · doc4.xml · nonDerivative · entry 2

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX Overage, L.P.

Disclosed balance after: 18,206,358

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

F1 · price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

SEC source: 0000899243-21-025523 · doc4.xml · nonDerivative · entry 1

ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner

ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner

ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner

ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner

ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX, L.P.

Disclosed balance after: 18,206,358

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

F1 · price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

SEC source: 0001209191-21-042801 · doc4.xml · derivative · entry 6

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX Overage, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 435,142 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F3 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. The Reporting Person is a managing director of AVP IX LLC ("AVP IX MD"). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and the AVP IX MD may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP and AVP IX LLC each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

F4 · ownership.nature: The Reporting Person is an AVP IX MD and may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any.

F5 · ownership.nature: These shares are directly held by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage.

SEC source: 0001209191-21-042801 · doc4.xml · derivative · entry 5

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 435,142 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: These shares are directly held by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX.

F3 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. The Reporting Person is a managing director of AVP IX LLC ("AVP IX MD"). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and the AVP IX MD may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP and AVP IX LLC each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

F4 · ownership.nature: The Reporting Person is an AVP IX MD and may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any.

SEC source: 0001209191-21-042801 · doc4.xml · derivative · entry 4

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX Overage, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 17,771,216 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F3 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. The Reporting Person is a managing director of AVP IX LLC ("AVP IX MD"). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and the AVP IX MD may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP and AVP IX LLC each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

F4 · ownership.nature: The Reporting Person is an AVP IX MD and may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any.

F5 · ownership.nature: These shares are directly held by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage.

SEC source: 0001209191-21-042801 · doc4.xml · derivative · entry 3

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 17,771,216 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.exercise_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F1 · derivative.expiration_date: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F2 · ownership.nature: These shares are directly held by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX.

F3 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. The Reporting Person is a managing director of AVP IX LLC ("AVP IX MD"). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and the AVP IX MD may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP and AVP IX LLC each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

F4 · ownership.nature: The Reporting Person is an AVP IX MD and may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any.

SEC source: 0001209191-21-042801 · doc4.xml · nonDerivative · entry 2

NELSEN ROBERT · CIK 0001219042 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · ARCH Venture Fund IX Overage, L.P.

Disclosed balance after: 18,206,358

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

F1 · price: The Issuer's Series A Convertible Preferred Stock and Series C Convertible Preferred Stock converted into Common Stock on a 1-for-1 basis and had no expiration date.

F3 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. The Reporting Person is a managing director of AVP IX LLC ("AVP IX MD"). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and the AVP IX MD may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP and AVP IX LLC each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

F4 · ownership.nature: The Reporting Person is an AVP IX MD and may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any.

F5 · ownership.nature: These shares are directly held by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage.