IDYA

SEC source: 0001567619-19-012238 · doc1.xml · derivative · entry 5

SHANNON TIMOTHY M · CIK 0001207114 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 602,549 shares

Expires not disclosed

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

F4 · derivative.exercise_price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · derivative.underlying_shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · derivative.underlying_shares: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F3 · ownership.nature: The reported securities are held directly by Canaan X L.P. (the "Canaan Fund"). The sole general partner of the Canaan Fund is Canaan Partners X LLC ("Canaan X", and together with the Canaan Fund, the "Canaan Entities"), and may be deemed to have sole voting, investment and dispositive power with respect to the shares held by the Canaan Fund. The Reporting Person is a manager and member of Canaan X. The Reporting Person disclaims Section 16 beneficial ownership in the securities held by the Canaan Entities, except to the extent of his pecuniary interest therein, if any, in such securities by virtue of the limited liability company interest he owns in Canaan X.

SEC source: 0001567619-19-012238 · doc1.xml · derivative · entry 4

SHANNON TIMOTHY M · CIK 0001207114 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See foonote

Disclosed balance after: 0

Underlying: Common Stock · 1,658,164 shares

Expires not disclosed

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

F2 · derivative.exercise_price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · derivative.underlying_shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · derivative.underlying_shares: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F3 · ownership.nature: The reported securities are held directly by Canaan X L.P. (the "Canaan Fund"). The sole general partner of the Canaan Fund is Canaan Partners X LLC ("Canaan X", and together with the Canaan Fund, the "Canaan Entities"), and may be deemed to have sole voting, investment and dispositive power with respect to the shares held by the Canaan Fund. The Reporting Person is a manager and member of Canaan X. The Reporting Person disclaims Section 16 beneficial ownership in the securities held by the Canaan Entities, except to the extent of his pecuniary interest therein, if any, in such securities by virtue of the limited liability company interest he owns in Canaan X.

SEC source: 0001567619-19-012238 · doc1.xml · nonDerivative · entry 3

SHANNON TIMOTHY M · CIK 0001207114 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,660,713

F3 · ownership.nature: The reported securities are held directly by Canaan X L.P. (the "Canaan Fund"). The sole general partner of the Canaan Fund is Canaan Partners X LLC ("Canaan X", and together with the Canaan Fund, the "Canaan Entities"), and may be deemed to have sole voting, investment and dispositive power with respect to the shares held by the Canaan Fund. The Reporting Person is a manager and member of Canaan X. The Reporting Person disclaims Section 16 beneficial ownership in the securities held by the Canaan Entities, except to the extent of his pecuniary interest therein, if any, in such securities by virtue of the limited liability company interest he owns in Canaan X.

SEC source: 0001567619-19-012238 · doc1.xml · nonDerivative · entry 2

SHANNON TIMOTHY M · CIK 0001207114 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,260,713

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 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · shares: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · balance_after: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F3 · ownership.nature: The reported securities are held directly by Canaan X L.P. (the "Canaan Fund"). The sole general partner of the Canaan Fund is Canaan Partners X LLC ("Canaan X", and together with the Canaan Fund, the "Canaan Entities"), and may be deemed to have sole voting, investment and dispositive power with respect to the shares held by the Canaan Fund. The Reporting Person is a manager and member of Canaan X. The Reporting Person disclaims Section 16 beneficial ownership in the securities held by the Canaan Entities, except to the extent of his pecuniary interest therein, if any, in such securities by virtue of the limited liability company interest he owns in Canaan X.

SEC source: 0001567619-19-012238 · doc1.xml · nonDerivative · entry 1

SHANNON TIMOTHY M · CIK 0001207114 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,658,164

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 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · shares: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · balance_after: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F3 · ownership.nature: The reported securities are held directly by Canaan X L.P. (the "Canaan Fund"). The sole general partner of the Canaan Fund is Canaan Partners X LLC ("Canaan X", and together with the Canaan Fund, the "Canaan Entities"), and may be deemed to have sole voting, investment and dispositive power with respect to the shares held by the Canaan Fund. The Reporting Person is a manager and member of Canaan X. The Reporting Person disclaims Section 16 beneficial ownership in the securities held by the Canaan Entities, except to the extent of his pecuniary interest therein, if any, in such securities by virtue of the limited liability company interest he owns in Canaan X.

SEC source: 0001567619-19-012279 · doc1.xml · derivative · entry 11

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 24,101 shares

Expires not disclosed

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

F4 · derivative.exercise_price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · derivative.underlying_shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · derivative.underlying_shares: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F5 · ownership.nature: The shares are held by 5AM Co-Investors IV, L.P. ("Co-Investors IV"). Partners IV is the sole general partner of Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · derivative · entry 10

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 71,745 shares

Expires not disclosed

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

F2 · derivative.exercise_price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · derivative.underlying_shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · derivative.underlying_shares: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F5 · ownership.nature: The shares are held by 5AM Co-Investors IV, L.P. ("Co-Investors IV"). Partners IV is the sole general partner of Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · derivative · entry 9

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 578,447 shares

Expires not disclosed

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

F4 · derivative.exercise_price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · derivative.underlying_shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · derivative.underlying_shares: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F3 · ownership.nature: The shares are held by 5AM Ventures IV, L.P. ("Ventures IV"). 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · derivative · entry 8

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 1,721,898 shares

Expires not disclosed

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

F2 · derivative.exercise_price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · derivative.underlying_shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · derivative.underlying_shares: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F3 · ownership.nature: The shares are held by 5AM Ventures IV, L.P. ("Ventures IV"). 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 7

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 500,000

F6 · ownership.nature: The shares are held by 5AM Opportunities I, L.P. ("Opportunities I"). 5AM Opportunities I (GP), LLC ("Opportunities I GP") is the sole general partner of Opportunities I. Kush Parmar and Andrew J. Schwab are the managing members of Opportunities I GP, and have shared voting and investment power over the shares beneficially owned by Opportunities I. Each of Opportunities I GP and Mr. Schwab disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 6

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 118,521

F5 · ownership.nature: The shares are held by 5AM Co-Investors IV, L.P. ("Co-Investors IV"). Partners IV is the sole general partner of Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 5

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,844,545

F3 · ownership.nature: The shares are held by 5AM Ventures IV, L.P. ("Ventures IV"). 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 4

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 108,521

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 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · shares: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · balance_after: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F5 · ownership.nature: The shares are held by 5AM Co-Investors IV, L.P. ("Co-Investors IV"). Partners IV is the sole general partner of Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 3

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 84,420

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 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · shares: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · balance_after: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F5 · ownership.nature: The shares are held by 5AM Co-Investors IV, L.P. ("Co-Investors IV"). Partners IV is the sole general partner of Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 2

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,604,545

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 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F4 · shares: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F4 · price: Each share of Series B Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · balance_after: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F3 · ownership.nature: The shares are held by 5AM Ventures IV, L.P. ("Ventures IV"). 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001567619-19-012279 · doc1.xml · nonDerivative · entry 1

5AM Ventures IV, L.P. · CIK 0001589315 · 10% owner

5AM Co-Investors IV, L.P. · CIK 0001593361 · 10% owner

5AM Partners IV, LLC · CIK 0001589314 · 10% owner

ROCKLAGE SCOTT M · CIK 0001219014 · 10% owner

Schwab Andrew J. · CIK 0001598549 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,026,098

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 · shares: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F2 · shares: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F2 · price: Each share of Series A Preferred Stock was automatically converted on a 1-for-1 basis into Common Stock immediately prior to the closing of the Issuer's initial public offering.

F1 · balance_after: Reflects a 1-for-10.2564 reverse stock split of the Issuer's outstanding securities effected prior to the effectiveness of the Issuer's S-1 Registration Statement.

F3 · ownership.nature: The shares are held by 5AM Ventures IV, L.P. ("Ventures IV"). 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

SEC source: 0001722024-19-000012 · wf-form4_155925432189535.xml · derivative · entry 4

Alexandria Venture Investments, LLC · CIK 0001722024 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 75,318 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 preferred stock automatically converted into the Issuer's common stock at a ratio of 10.2564 shares of preferred stock to 1 share of common stock upon closing of the Issuer's initial public offering on May 28, 2019, for no additional consideration. The shares had no expiration date.

F2 · price: Not applicable.

F1 · derivative.exercise_date: Each share of preferred stock automatically converted into the Issuer's common stock at a ratio of 10.2564 shares of preferred stock to 1 share of common stock upon closing of the Issuer's initial public offering on May 28, 2019, for no additional consideration. The shares had no expiration date.

F2 · derivative.expiration_date: Not applicable.

SEC source: 0001722024-19-000012 · wf-form4_155925432189535.xml · derivative · entry 3

Alexandria Venture Investments, LLC · CIK 0001722024 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 307,066 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 preferred stock automatically converted into the Issuer's common stock at a ratio of 10.2564 shares of preferred stock to 1 share of common stock upon closing of the Issuer's initial public offering on May 28, 2019, for no additional consideration. The shares had no expiration date.

F2 · price: Not applicable.

F1 · derivative.exercise_date: Each share of preferred stock automatically converted into the Issuer's common stock at a ratio of 10.2564 shares of preferred stock to 1 share of common stock upon closing of the Issuer's initial public offering on May 28, 2019, for no additional consideration. The shares had no expiration date.

F2 · derivative.expiration_date: Not applicable.

SEC source: 0001722024-19-000012 · wf-form4_155925432189535.xml · nonDerivative · entry 2

Alexandria Venture Investments, LLC · CIK 0001722024 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 432,384

SEC source: 0001722024-19-000012 · wf-form4_155925432189535.xml · nonDerivative · entry 1

Alexandria Venture Investments, LLC · CIK 0001722024 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 382,384

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: Each share of preferred stock automatically converted into the Issuer's common stock at a ratio of 10.2564 shares of preferred stock to 1 share of common stock upon closing of the Issuer's initial public offering on May 28, 2019, for no additional consideration. The shares had no expiration date.