XFOR

SEC source: 0001628280-22-018048 · wf-form4_165636091026183.xml · nonDerivative · entry 1

Aliski William · CIK 0001598426 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,667

F1 · shares: Represents an annual grant of restricted stock units ("RSUs") for service as a director to the Issuer. The RSUs will vest in two equal annual installments on June 6, 2023 and June 6, 2024, subject to the Reporting Person continuing to provide service to the Issuer through the applicable vesting dates.

F2 · balance_after: Represents unvested RSUs.

SEC source: 0001628280-22-016336 · wf-form4_165454647747063.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 661,806

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · shares: Sale of shares to cover personal income tax obligation upon settlement of restricted stock unit award

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.19 to $1.23, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F4 · balance_after: Of the shares of common stock reported, 420,884 shares represent unvested restricted stock units.

SEC source: 0001628280-22-004518 · wf-form4_164616936069234.xml · nonDerivative · entry 1

DiBiase Mary · CIK 0001880179 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 182,899

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Of the shares of common stock reported, 177,748 shares represent unvested restricted stock units.

SEC source: 0001628280-22-004493 · wf-form4_164616887905021.xml · nonDerivative · entry 1

Meisner Derek M · CIK 0001752461 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,821

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-22-004497 · wf-form4_164616893696670.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 198,224

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-22-004499 · wf-form4_164616896122495.xml · nonDerivative · entry 1

Taveras Arthur · CIK 0001830901 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,107

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Of the shares of common stock reported, 102,357 shares represent unvested restricted stock units.

SEC source: 0001628280-22-004495 · wf-form4_164616890458685.xml · nonDerivative · entry 1

Cadavid Diego · CIK 0001778713 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,107

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Of the shares of common stock reported, 102,357 shares represent unvested restricted stock units.

SEC source: 0001628280-22-004517 · wf-form4_164616931615259.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 668,098

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Of the shares of common stock reported, 434,829 shares represent unvested restricted stock units.

SEC source: 0001628280-22-002508 · wf-form4_164487367680982.xml · nonDerivative · entry 1

DiBiase Mary · CIK 0001880179 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,899

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.52 to $1.74, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 72,748 shares represent unvested restricted stock units.

SEC source: 0001628280-22-002509 · wf-form4_164487371477082.xml · nonDerivative · entry 1

Meisner Derek M · CIK 0001752461 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,821

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.53 to $1.74, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-22-002511 · wf-form4_164487375572326.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,224

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.52 to $1.74, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-22-002505 · wf-form4_164487355715189.xml · nonDerivative · entry 1

Cadavid Diego · CIK 0001778713 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,107

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.53 to $1.74, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-22-002507 · wf-form4_164487363627920.xml · nonDerivative · entry 1

Taveras Arthur · CIK 0001830901 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,107

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · shares: Shares withheld by X4 Pharmaceuticals Inc. to satisfy taxes payable in connection with the vesting of previously awarded restricted stock units.

F3 · balance_after: Of the shares of common stock reported, 5,357 shares represent unvested restricted stock units.

SEC source: 0001628280-22-002506 · wf-form4_164487359327366.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 447,309

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.52 to $1.74, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 214,037 shares represent unvested restricted stock units.

SEC source: 0001628280-21-020185 · wf-form4_163458811748496.xml · derivative · entry 1

de Craecker Francoise · CIK 0001887843 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,250

Underlying: Common Stock · 12,250 shares

Expires 2031-10-13

F1 · derivative.exercise_date: 33.3333% of the shares subject to the option shall vest on October 14, 2022, with the remainder vesting thereafter in equal monthly installments of 2.7777% of the shares subject to the option until the 36-month anniversary of the date of the grant, subject to the Reporting Person's continued services as a director through each applicable vesting date.

SEC source: 0001628280-21-018385 · wf-form4_163130459114894.xml · nonDerivative · entry 1

DiBiase Mary · CIK 0001880179 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,444

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares will vest on each of September 8, 2022, September 8, 2023 and September 8, 2024, respectively, subject to the Reporting Person providing continuous service to the Issuer on such dates.

SEC source: 0001628280-21-017332 · wf-form4_162940476414343.xml · nonDerivative · entry 1

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,730

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $4.98 to $5.35, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-017333 · wf-form4_162940478600346.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,945

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $4.98 to $5.35, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-017331 · wf-form4_162940473895833.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 469,004

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $4.98 to $5.35, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 262,246 shares represent unvested restricted stock units.

SEC source: 0001628280-21-013959 · wf-form4_162646567293011.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 482,452

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $5.64 to $5.94, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 292,131 shares represent unvested restricted stock units.

SEC source: 0001628280-21-013299 · wf-form4_162514188426351.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 131,777

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $6.50 to $6.78, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-012932 · wf-form4_162465138910056.xml · nonDerivative · entry 2

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,062

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $6.86 to $7.28, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F4 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-012933 · wf-form4_162465141949892.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 134,418

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $6.89 to $7.28, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F4 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-012932 · wf-form4_162465138910056.xml · nonDerivative · entry 1

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,228

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 23, 2021. One third of the shares will vest on June 23, 2022, and one third of the shares will vest on June 23, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

SEC source: 0001628280-21-012933 · wf-form4_162465141949892.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,835

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 23, 2021. One third of the shares will vest on June 23, 2022, and one third of the shares will vest on June 23, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

SEC source: 0001628280-21-012931 · wf-form4_162465136608750.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 495,900

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 23, 2021. One third of the shares will vest on June 23, 2022, and one third of the shares will vest on June 23, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

F2 · balance_after: Of the shares of common stock reported, 292,130 shares represent unvested restricted stock units.

SEC source: 0001628280-21-012478 · wf-form4_162396436372680.xml · nonDerivative · entry 2

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,728

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $7.72 to $8.19, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F4 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-012478 · wf-form4_162396436372680.xml · nonDerivative · entry 1

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,894

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 15, 2021. One third of the shares will vest on June 15, 2022, and one third of the shares will vest on June 15, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

SEC source: 0001628280-21-012477 · wf-form4_162396433610629.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,585

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $7.74 to $8.20, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F4 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-012477 · wf-form4_162396433610629.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,002

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 15, 2021. One third of the shares will vest on June 15, 2022, and one third of the shares will vest on June 15, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

SEC source: 0001628280-21-012476 · wf-form4_162396430850370.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 451,074

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 15, 2021. One third of the shares will vest on June 15, 2022, and one third of the shares will vest on June 15, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

F2 · balance_after: Of the shares of common stock reported, 262,246 shares represent unvested restricted stock units.

SEC source: 0001628280-21-011545 · wf-form4_162266780108629.xml · derivative · entry 1

WYZGA MICHAEL S · CIK 0001201256 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011542 · wf-form4_162266771107740.xml · derivative · entry 1

MCGIRR DAVID W J · CIK 0001219023 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011547 · wf-form4_162266783712804.xml · derivative · entry 1

Bridger Gary · CIK 0001600049 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011546 · wf-form4_162266781755759.xml · derivative · entry 1

Aliski William · CIK 0001598426 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011544 · wf-form4_162266776504487.xml · derivative · entry 1

Stewart Murray · CIK 0001723450 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011543 · wf-form4_162266774296212.xml · derivative · entry 1

Lawton Alison Frances · CIK 0001542650 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011534 · wf-form4_162266743993002.xml · derivative · entry 1

Russo Rene · CIK 0001722066 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires 2031-06-02

F1 · derivative.exercise_date: 8.3333% of the shares subject to the option shall vest on July 2, 2021, with the remainder vesting in equal monthly installments of 8.333% of the shares subject to the option until the 12-month anniversary of the date of the grant (or, if earlier, the date of the Issuer's next annual meeting of stockholders following the date of the grant) subject to the Reporting Person continuing to provide services through each such date.

SEC source: 0001628280-21-011531 · wf-form4_162266707489024.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 406,248

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $9.40 to $9.62, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 232,361 shares represent unvested restricted stock units.

SEC source: 0001628280-21-011502 · wf-form4_162266478928914.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 408,648

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · shares: Sale of shares to cover personal income tax obligation upon settlement of restricted stock unit award

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $9.31 to $9.55, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F4 · balance_after: Of the shares of common stock reported, 232,361 shares represent unvested restricted stock units.

SEC source: 0001628280-21-008873 · wf-form4_162015902838806.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 412,752

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.16 to $8.46, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 246,343 shares represent unvested restricted stock units.

SEC source: 0001628280-21-006624 · wf-form4_161780162022907.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 415,152

F1 · shares: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.92 to $9.40, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 246,343 shares represent unvested restricted stock units.

SEC source: 0001628280-21-005658 · wf-form4_161670563770115.xml · nonDerivative · entry 1

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,394

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 11, 2022, February 11, 2023 and February 11, 2024 subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-005667 · wf-form4_161670655632254.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,752

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 11, 2022, February 11, 2023 and February 11, 2024 subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-005665 · wf-form4_161670641436695.xml · nonDerivative · entry 1

Taveras Arthur · CIK 0001830901 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,035

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 11, 2022, February 11, 2023 and February 11, 2024 subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-005661 · wf-form4_161670575865534.xml · nonDerivative · entry 1

Cadavid Diego · CIK 0001778713 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,035

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 11, 2022, February 11, 2023 and February 11, 2024 subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

SEC source: 0001628280-21-005659 · wf-form4_161670569541218.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 417,552

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 11, 2022, February 11, 2023 and February 11, 2024 subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Of the shares of common stock reported, 246,343 shares represent unvested restricted stock units.

SEC source: 0001628280-21-003760 · wf-form4_161472988864140.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 272,923

F1 · shares: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $9.65 to $9.92, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 101,714 shares represent unvested restricted stock units.

SEC source: 0001628280-21-001402 · wf-form4_161239017942620.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 275,323

F1 · shares: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $7.82 to $7.96, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company 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.

F3 · balance_after: Of the shares of common stock reported, 101,714 shares represent unvested restricted stock units.

SEC source: 0001628280-21-000148 · wf-form4_160993949156703.xml · nonDerivative · entry 1

Ragan Paula · CIK 0001769914 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 277,723

F1 · shares: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.