MASS

SEC source: 0001104659-21-083127 · tm2120211-2_4.xml · nonDerivative · entry 1

Griffith Joseph H. IV · CIK 0001431531 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,580

F1 · kind: Represents sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001104659-21-083126 · tm2120211-1_4seq1.xml · derivative · entry 3

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 143,033

Underlying: Common Stock, par value $0.001 · 153,033 shares

Expires 2023-04-18

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

F2 · derivative.exercise_date: The shares underlying the option are fully vested and immediately exercisable.

SEC source: 0001104659-21-083126 · tm2120211-1_4seq1.xml · nonDerivative · entry 2

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Represents sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001104659-21-083126 · tm2120211-1_4seq1.xml · nonDerivative · entry 1

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

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

SEC source: 0001104659-21-078965 · tm2119282-2_4seq1.xml · derivative · entry 2

Eisenberg Marcia · CIK 0001866723 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,045

Underlying: Common Stock, par value $0.001 · 2,045 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.

F3 · derivative.exercise_date: The RSUs become vested in substantially equal annual installments over the 3 years following June 7, 2021, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested in substantially equal annual installments over the 3 years following June 7, 2021, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

SEC source: 0001104659-21-078965 · tm2119282-2_4seq1.xml · derivative · entry 1

Eisenberg Marcia · CIK 0001866723 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,511

Underlying: Common Stock, par value $0.001 · 3,511 shares

Expires 2031-06-07

F1 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 36 months following June 7, 2021, subject to the reporting person's continued service through the applicable vesting date.

SEC source: 0001104659-21-031661 · tm218484-4_4seq1.xml · derivative · entry 2

George Jeffrey P. · CIK 0001796789 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,523

Underlying: Common Stock, par value $0.001 · 1,523 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.

F3 · derivative.exercise_date: The RSUs become vested in substantially equal annual installments over the 3 years following February 22, 2021, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested in substantially equal annual installments over the 3 years following February 22, 2021, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

SEC source: 0001104659-21-031661 · tm218484-4_4seq1.xml · derivative · entry 1

George Jeffrey P. · CIK 0001796789 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,562

Underlying: Common Stock, par value $0.001 · 2,562 shares

Expires 2031-03-01

F1 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 36 months following February 22, 2021, subject to the reporting person's continued service through the applicable vesting date.

SEC source: 0001104659-21-031659 · tm218484-3_4seq1.xml · derivative · entry 2

ELOI FENEL M · CIK 0001237190 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,523

Underlying: Common Stock, par value $0.001 · 1,523 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.

F3 · derivative.exercise_date: The RSUs become vested in substantially equal annual installments over the 3 years following February 22, 2021, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

F3 · derivative.expiration_date: The RSUs become vested in substantially equal annual installments over the 3 years following February 22, 2021, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

SEC source: 0001104659-21-031659 · tm218484-3_4seq1.xml · derivative · entry 1

ELOI FENEL M · CIK 0001237190 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,562

Underlying: Common Stock, par value $0.001 · 2,562 shares

Expires 2031-03-01

F1 · derivative.exercise_date: The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 36 months following February 22, 2021, subject to the reporting person's continued service through the applicable vesting date.

SEC source: 0001104659-20-138749 · tm2039218d4_4seq1.xml · derivative · entry 2

Griffith Joseph H. IV · CIK 0001431531 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 17,814 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 C Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series C Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series C Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138749 · tm2039218d4_4seq1.xml · nonDerivative · entry 1

Griffith Joseph H. IV · CIK 0001431531 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 109,394

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 Series C Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · derivative · entry 7

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 180,578 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · derivative · entry 6

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 665,661 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · derivative · entry 5

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 669,977 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · derivative · entry 4

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 981,443 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · derivative · entry 3

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 2,927,386 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · nonDerivative · entry 2

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,725,045

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138752 · tm2039218d7_4.xml · nonDerivative · entry 1

ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

NELSEN ROBERT · CIK 0001219042 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,425,045

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 Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.direct: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the securities held by ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

SEC source: 0001104659-20-138748 · tm2039218d3_4.xml · derivative · entry 3

BARTHELEMY NICOLAS · CIK 0001283576 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 19,541 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 E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: These securities are owned directly by The Barthelemy 2001 Trust. The reporting person and his spouse are trustees of The Barthelemy 2001 Trust and have joint voting and dispositive control with respect to all securities held by The Barthelemy 2001 Trust and may be deemed to be the beneficial owner of the securities held by The Barthelemy 2001 Trust.

SEC source: 0001104659-20-138748 · tm2039218d3_4.xml · nonDerivative · entry 2

BARTHELEMY NICOLAS · CIK 0001283576 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,000

SEC source: 0001104659-20-138748 · tm2039218d3_4.xml · nonDerivative · entry 1

BARTHELEMY NICOLAS · CIK 0001283576 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 19,541

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 Series E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: These securities are owned directly by The Barthelemy 2001 Trust. The reporting person and his spouse are trustees of The Barthelemy 2001 Trust and have joint voting and dispositive control with respect to all securities held by The Barthelemy 2001 Trust and may be deemed to be the beneficial owner of the securities held by The Barthelemy 2001 Trust.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · derivative · entry 7

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 180,578 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · derivative · entry 6

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 665,661 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · derivative · entry 5

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 669,977 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · derivative · entry 4

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 981,443 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · derivative · entry 3

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 2,927,386 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · nonDerivative · entry 2

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 5,725,045

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138747 · tm2039218-2_4seq1.xml · nonDerivative · entry 1

CRANDELL KEITH · CIK 0001219039 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 5,425,045

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 Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the securities held by ARCH Fund VII. The reporting person is a managing director of ARCH VII LLC, and may be deemed to beneficially own the securities held by ARCH Fund VII. The reporting person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138759 · tm2039218d11.xml · derivative · entry 6

HRUSOVSKY E KEVIN · CIK 0001252546 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 136,499 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 Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by the E. Kevin Hrusovsky 2012 Irrevocable Trust. The reporting person's spouse and children are trustees of E. Kevin Hrusovsky 2012 Irrevocable Trust and have joint voting and dispositive control with respect to all securities held by E. Kevin Hrusovsky 2012 Irrevocable Trust and the reporting person may be deemed to be the beneficial owner of the securities held by E. Kevin Hrusovsky 2012 Irrevocable Trust.

SEC source: 0001104659-20-138759 · tm2039218d11.xml · derivative · entry 5

HRUSOVSKY E KEVIN · CIK 0001252546 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 33,998 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 Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138759 · tm2039218d11.xml · derivative · entry 4

HRUSOVSKY E KEVIN · CIK 0001252546 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 101,407 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 Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138759 · tm2039218d11.xml · nonDerivative · entry 3

HRUSOVSKY E KEVIN · CIK 0001252546 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 136,499

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 Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: The securities are owned directly by the E. Kevin Hrusovsky 2012 Irrevocable Trust. The reporting person's spouse and children are trustees of E. Kevin Hrusovsky 2012 Irrevocable Trust and have joint voting and dispositive control with respect to all securities held by E. Kevin Hrusovsky 2012 Irrevocable Trust and the reporting person may be deemed to be the beneficial owner of the securities held by E. Kevin Hrusovsky 2012 Irrevocable Trust.

SEC source: 0001104659-20-138759 · tm2039218d11.xml · nonDerivative · entry 2

HRUSOVSKY E KEVIN · CIK 0001252546 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 243,176

SEC source: 0001104659-20-138759 · tm2039218d11.xml · nonDerivative · entry 1

HRUSOVSKY E KEVIN · CIK 0001252546 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 193,176

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 Series A Preferred Stock and Series B Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138755 · tm2039218d10_4.xml · nonDerivative · entry 1

Turner Michael S. · CIK 0001836524 · VP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · derivative · entry 4

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 4,396 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, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · derivative · entry 3

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 21,147 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, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · derivative · entry 2

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 63,074 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, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · nonDerivative · entry 1

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,353,061

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 Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138753 · tm2039218d8_4.xml · derivative · entry 3

Kedar Sharon · CIK 0001836530 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 977,091 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 E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: These securities are owned directly by Northpond Ventures, LP. The reporting person is a partner of Northpond Ventures, LP and may be deemed to be the beneficial owner of the securities held by Northpond Ventures, LP. The reporting person disclaims beneficial ownership of the securities held by Northpond Ventures, LP except to the extent of her pecuniary interest therein.

SEC source: 0001104659-20-138753 · tm2039218d8_4.xml · nonDerivative · entry 2

Kedar Sharon · CIK 0001836530 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,077,091

F2 · ownership.nature: These securities are owned directly by Northpond Ventures, LP. The reporting person is a partner of Northpond Ventures, LP and may be deemed to be the beneficial owner of the securities held by Northpond Ventures, LP. The reporting person disclaims beneficial ownership of the securities held by Northpond Ventures, LP except to the extent of her pecuniary interest therein.

SEC source: 0001104659-20-138753 · tm2039218d8_4.xml · nonDerivative · entry 1

Kedar Sharon · CIK 0001836530 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 977,091

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 Series E Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · ownership.nature: These securities are owned directly by Northpond Ventures, LP. The reporting person is a partner of Northpond Ventures, LP and may be deemed to be the beneficial owner of the securities held by Northpond Ventures, LP. The reporting person disclaims beneficial ownership of the securities held by Northpond Ventures, LP except to the extent of her pecuniary interest therein.

SEC source: 0001104659-20-138751 · tm2039218d6_4.xml · nonDerivative · entry 1

Basarsky Trent A. · CIK 0001608021 · Vice President, Commercial

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

SEC source: 0001104659-20-138750 · tm2039218d5_4.xml · derivative · entry 2

Brown Christopher D. · CIK 0001836988 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 4,396 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 D Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series D Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series D Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138750 · tm2039218d5_4.xml · nonDerivative · entry 1

Brown Christopher D. · CIK 0001836988 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,103,912

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 Series D Preferred Stock (the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

SEC source: 0001104659-20-138746 · tm2039218-1_4seq1.xml · derivative · entry 10

Spoto Mark · CIK 0001836585 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 59,602 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F4 · ownership.nature: These securities are owned directly by Yodabyte Investments, LLC. The reporting person is a managing member of Yodabyte Investments, LLC and may be deemed to be the beneficial owner of the securities held by Yodabyte Investments, LLC. The reporting person disclaims beneficial ownership of the securities held by the Yodabyte Investments, LLC except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138746 · tm2039218-1_4seq1.xml · derivative · entry 9

Spoto Mark · CIK 0001836585 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 109,064 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F4 · ownership.nature: These securities are owned directly by Yodabyte Investments, LLC. The reporting person is a managing member of Yodabyte Investments, LLC and may be deemed to be the beneficial owner of the securities held by Yodabyte Investments, LLC. The reporting person disclaims beneficial ownership of the securities held by the Yodabyte Investments, LLC except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138746 · tm2039218-1_4seq1.xml · derivative · entry 8

Spoto Mark · CIK 0001836585 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 92,705 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3 · ownership.nature: These securities are owned directly by RE Sidecar 4, LLC. The reporting person is a managing member of RE Sidecar 4, LLC and may be deemed to be the beneficial owner of the securities held by RE Sidecar 4, LLC. The reporting person disclaims beneficial ownership of the securities held by the RE Sidecar 4, LLC except to the extent of his pecuniary interest therein.

SEC source: 0001104659-20-138746 · tm2039218-1_4seq1.xml · derivative · entry 7

Spoto Mark · CIK 0001836585 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 246,151 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, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3 · ownership.nature: These securities are owned directly by RE Sidecar 4, LLC. The reporting person is a managing member of RE Sidecar 4, LLC and may be deemed to be the beneficial owner of the securities held by RE Sidecar 4, LLC. The reporting person disclaims beneficial ownership of the securities held by the RE Sidecar 4, LLC except to the extent of his pecuniary interest therein.