BDTX

SEC source: 0000899243-21-007433 · doc4.xml · derivative · entry 1

Leggett Thomas · CIK 0001774690 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2031-02-16

F1 · derivative.exercise_date: 25% of the shares subject to this option shall vest and become exercisable on February 17, 2022, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-007431 · doc4.xml · derivative · entry 1

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 225,000

Underlying: Common Stock · 225,000 shares

Expires 2031-02-16

F1 · derivative.exercise_date: 25% of the shares subject to this option shall vest and become exercisable on February 17, 2022, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-006454 · doc4.xml · derivative · entry 4

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 172,708

Underlying: Common Stock · 4,078 shares

Expires 2029-06-11

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

F4 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on May 22, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-006454 · doc4.xml · nonDerivative · entry 3

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,400

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.525 to $28.35, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-006454 · doc4.xml · nonDerivative · entry 2

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,707

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.47 to $27.46, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-006454 · doc4.xml · nonDerivative · entry 1

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,478

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: 0000899243-21-004959 · doc4.xml · derivative · entry 3

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 171,109

Underlying: Common Stock · 2,500 shares

Expires 2029-09-08

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: 25% of the shares subject to this option vested and became exercisable on September 3, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-004959 · doc4.xml · nonDerivative · entry 2

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,200

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 2, 2020.

SEC source: 0000899243-21-004959 · doc4.xml · nonDerivative · entry 1

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,700

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: 0000899243-21-002963 · doc4.xml · derivative · entry 1

Dhingra Kapil · CIK 0001456849 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,842

Underlying: Common Stock · 29,842 shares

Expires 2031-01-19

F1 · derivative.exercise_date: This option shall vest and become exercisable in thirty-six (36) equal monthly installments following the Grant Date.

SEC source: 0000899243-21-002119 · doc4.xml · derivative · entry 10

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,251

Underlying: Common Stock · 7,500 shares

Expires 2029-12-04

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.

F8 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on December 5, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-002119 · doc4.xml · derivative · entry 9

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 176,786

Underlying: Common Stock · 4,078 shares

Expires 2029-06-11

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

F7 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on May 22, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 8

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,400

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.95 to $36.00, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 7

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,911

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 6

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,011

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.495 to $32.50, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 5

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,114

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.46 to $32.08, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 4

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,261

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.335 to $30.66, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 3

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,930

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.315 to $30.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 2

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,978

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: 0000899243-21-002119 · doc4.xml · nonDerivative · entry 1

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,478

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: 0000899243-21-001378 · doc4.xml · derivative · entry 3

Leggett Thomas · CIK 0001774690 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 218,171

Underlying: Common Stock · 3,000 shares

Expires 2029-09-08

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

F3 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on September 5, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-001378 · doc4.xml · nonDerivative · entry 2

Leggett Thomas · CIK 0001774690 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 5, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.53 to $34.25, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-001378 · doc4.xml · nonDerivative · entry 1

Leggett Thomas · CIK 0001774690 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,000

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

SEC source: 0000899243-21-000743 · doc4.xml · derivative · entry 4

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 173,609

Underlying: Common Stock · 2,500 shares

Expires 2029-09-08

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

F4 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on September 3, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-000743 · doc4.xml · nonDerivative · entry 3

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,200

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 2, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.72 to $32.02, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-000743 · doc4.xml · nonDerivative · entry 2

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,737

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 2, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.72 to $31.67, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-000743 · doc4.xml · nonDerivative · entry 1

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,700

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: 0000899243-21-000741 · doc4.xml · derivative · entry 9

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 230,116

Underlying: Common Stock · 3,000 shares

Expires 2029-08-13

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

F9 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on August 14, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-21-000741 · doc4.xml · nonDerivative · entry 3

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 696,423

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.55 to $32.02 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-000741 · doc4.xml · nonDerivative · entry 2

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 698,438

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.55 to $31.48 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-21-000741 · doc4.xml · nonDerivative · entry 1

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 708,423

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: 0000899243-20-035424 · doc4.xml · derivative · entry 2

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 180,864

Underlying: Common Stock · 5,400 shares

Expires 2029-06-11

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

F1 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on May 22, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-20-035424 · doc4.xml · nonDerivative · entry 1

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,400

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: 0000899243-20-034189 · doc4.xml · derivative · entry 2

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 176,109

Underlying: Common Stock · 3,200 shares

Expires 2029-09-08

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

F1 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on September 3, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-20-034189 · doc4.xml · nonDerivative · entry 1

Roberts Christopher D. · CIK 0001788368 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,200

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: 0000899243-20-034190 · doc4.xml · nonDerivative · entry 1

INGRAM ROBERT ALEXANDER · CIK 0001219890 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,505

F1 · kind: These shares were issued in accordance with the Issuer's Amended and Restated Non-Employee Director Compensation Policy, pursuant to which the Reporting Person elected to receive shares of the Issuer's common stock in lieu of cash compensation for annual services as a non-employee director of the Issuer.

F2 · price: The price of reported in Column 4 is based upon the closing market price of the Issuer's common stock on December 14, 2020.

SEC source: 0000899243-20-034186 · doc4.xml · derivative · entry 7

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 233,116

Underlying: Common Stock · 2,500 shares

Expires 2029-08-13

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

F6 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on August 14, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-20-034186 · doc4.xml · nonDerivative · entry 1

Epstein David M. · CIK 0001488668 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 705,423

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: 0000899243-20-034179 · doc4.xml · nonDerivative · entry 5

Versant Venture Capital VI, L.P. · CIK 0001687880 · 10% owner

Versant Voyageurs I Parallel, L.P. · CIK 0001745961 · 10% owner

Versant Voyageurs I, L.P. · CIK 0001745960 · 10% owner

Versant Vantage I, L.P. · CIK 0001765253 · 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

F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Vantage I GP-GP, to its members.

F7 · ownership.nature: Shares held by Versant Vantage I GP-GP. Bradley J. Bolzon is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held Versant Vantage I GP-GP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Bradley J. Bolzon is a director of the Issuer and, accordingly, files separate Section 16 reports.

SEC source: 0000899243-20-034179 · doc4.xml · nonDerivative · entry 4

Versant Venture Capital VI, L.P. · CIK 0001687880 · 10% owner

Versant Voyageurs I Parallel, L.P. · CIK 0001745961 · 10% owner

Versant Voyageurs I, L.P. · CIK 0001745960 · 10% owner

Versant Vantage I, L.P. · CIK 0001765253 · 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: 307

F6 · kind: Represents a change in the form of ownership of Versant Vantage I GP-GP by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant Vantage I GP LP.

F7 · ownership.nature: Shares held by Versant Vantage I GP-GP. Bradley J. Bolzon is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held Versant Vantage I GP-GP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Bradley J. Bolzon is a director of the Issuer and, accordingly, files separate Section 16 reports.

SEC source: 0000899243-20-034179 · doc4.xml · nonDerivative · entry 3

Versant Venture Capital VI, L.P. · CIK 0001687880 · 10% owner

Versant Voyageurs I Parallel, L.P. · CIK 0001745961 · 10% owner

Versant Voyageurs I, L.P. · CIK 0001745960 · 10% owner

Versant Vantage I, L.P. · CIK 0001765253 · 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

F5 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Vantage I GP LP, to its partners.

F4 · ownership.nature: Shares held by Versant Vantage I GP LP. Versant Vantage I GP-GP is the general partner of Versant Vantage I GP LP. Bradley J. Bolzon is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I GP LP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein. Bradley J. Bolzon is a director of the Issuer and, accordingly, files separate Section 16 reports.

SEC source: 0000899243-20-034179 · doc4.xml · nonDerivative · entry 2

Versant Venture Capital VI, L.P. · CIK 0001687880 · 10% owner

Versant Voyageurs I Parallel, L.P. · CIK 0001745961 · 10% owner

Versant Voyageurs I, L.P. · CIK 0001745960 · 10% owner

Versant Vantage I, L.P. · CIK 0001765253 · 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: 310

F3 · kind: Represents a change in the form of ownership of Versant Vantage I GP LP by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant Vantage I.

F4 · ownership.nature: Shares held by Versant Vantage I GP LP. Versant Vantage I GP-GP is the general partner of Versant Vantage I GP LP. Bradley J. Bolzon is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I GP LP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein. Bradley J. Bolzon is a director of the Issuer and, accordingly, files separate Section 16 reports.

SEC source: 0000899243-20-034179 · doc4.xml · nonDerivative · entry 1

Versant Venture Capital VI, L.P. · CIK 0001687880 · 10% owner

Versant Voyageurs I Parallel, L.P. · CIK 0001745961 · 10% owner

Versant Voyageurs I, L.P. · CIK 0001745960 · 10% owner

Versant Vantage I, L.P. · CIK 0001765253 · 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: 822,140

F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Vantage I, L.P. ("Versant Vantage I"), to its partners, pursuant to a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares held by Versant Vantage I. Versant Vantage I GP, L.P. ("Versant Vantage I GP LP") is the general partner of Versant Vantage I, and Versant Vantage I GP-GP, LLC ("Versant Vantage I GP-GP") is the general partner of Versant Vantage I GP LP. Bradley J. Bolzon is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Bradley J. Bolzon is a director of the Issuer and, accordingly, files separate Section 16 reports.

SEC source: 0000899243-20-034188 · doc4.xml · derivative · entry 3

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 186,264

Underlying: Common Stock · 4,078 shares

Expires 2029-06-11

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

F3 · derivative.exercise_date: 25% of the shares subject to this option vested and became exercisable on May 22, 2020, with the remainder vesting in 36 equal monthly installments thereafter.

SEC source: 0000899243-20-034188 · doc4.xml · nonDerivative · entry 2

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,000

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 12, 2020

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.77 to $35.54, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-20-034188 · doc4.xml · nonDerivative · entry 1

Hatzis-Schoch Brent · CIK 0001637054 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,078

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: 0000899243-20-034174 · doc4.xml · nonDerivative · entry 6

Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,851

F9 · kind: Represents a change in the form of ownership of the Reporting Person by virtue of the receipt of shares as a result of the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant Vantage I GP-GP.

SEC source: 0000899243-20-034174 · doc4.xml · nonDerivative · entry 5

Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Vantage I GP-GP, to its members.

F7 · ownership.nature: Shares held by Versant Vantage I GP-GP. The Reporting Person is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held Versant Vantage I GP-GP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein.

SEC source: 0000899243-20-034174 · doc4.xml · nonDerivative · entry 4

Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 307

F6 · kind: Represents a change in the form of ownership of Versant Vantage I GP-GP by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant Vantage I GP LP.

F7 · ownership.nature: Shares held by Versant Vantage I GP-GP. The Reporting Person is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held Versant Vantage I GP-GP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein.

SEC source: 0000899243-20-034174 · doc4.xml · nonDerivative · entry 3

Bolzon Bradley J PhD · CIK 0001354345 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F5 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Vantage I GP LP, to its partners.

F4 · ownership.nature: Shares held by Versant Vantage I GP LP. Versant Vantage I GP-GP is the general partner of Versant Vantage I GP LP. The Reporting Person is a managing member of Versant Vantage I GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant Vantage I GP LP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.