GH

SEC source: 0001628280-19-011199 · wf-form4_156686319776212.xml · nonDerivative · entry 5

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,660

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $92.60 to $93.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011199 · wf-form4_156686319776212.xml · nonDerivative · entry 4

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,784

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $91.60 to $92.59, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011199 · wf-form4_156686319776212.xml · nonDerivative · entry 3

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,523

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $94.60 to $95.41, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011199 · wf-form4_156686319776212.xml · nonDerivative · entry 2

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,562

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $93.60 to $94.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011199 · wf-form4_156686319776212.xml · nonDerivative · entry 1

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,660

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $92.60 to $93.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011256 · wf-form4_156702876964626.xml · derivative · entry 3

CLARK IAN T · CIK 0001336504 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,988

Underlying: COMMON STOCK · 538 shares

Expires 2027-11-29

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 stock option vests and becomes exercisable in equal monthly installments over 48 months commencing on October 25, 2017.

SEC source: 0001628280-19-011256 · wf-form4_156702876964626.xml · nonDerivative · entry 2

CLARK IAN T · CIK 0001336504 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,302

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

SEC source: 0001628280-19-011256 · wf-form4_156702876964626.xml · nonDerivative · entry 1

CLARK IAN T · CIK 0001336504 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,840

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: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 20

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,880

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.17 to $99.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 19

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,911

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.17 to $99.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 18

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,036

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F8 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.16 to $98.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 17

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,127

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.15 to $97.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 16

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,209

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $95.12 to $96.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 15

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,386

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $94.12 to $95.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 14

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,880

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.17 to $99.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 13

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 9,911

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.17 to $99.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 12

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,036

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F8 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.16 to $98.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 11

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,127

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.15 to $97.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 10

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,208

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $95.12 to $96.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 9

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,385

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $94.12 to $95.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 8

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,616,732

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.17 to $99.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 7

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,618,026

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.17 to $99.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 6

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,622,515

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F8 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.16 to $98.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 5

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,625,843

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.15 to $97.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 4

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,628,946

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $95.12 to $96.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 3

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,635,507

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $94.12 to $95.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 2

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,503

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · shares: Some of the shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.17 to $99.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011197 · wf-form4_156686310595612.xml · nonDerivative · entry 1

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,965

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · shares: Some of the shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.17 to $99.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · derivative · entry 32

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,086,571

Underlying: COMMON STOCK · 8,865 shares

Expires 2022-07-13

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.

F12 · derivative.exercise_date: The stock option vests and becomes exercisable in equal monthly installments over 48 months commencing on April 23, 2017.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 30

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,561

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · shares: Some of the shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

F11 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.16 to $98.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 29

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,750

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · shares: Some of the shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

F10 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.15 to $97.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 28

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,877

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · shares: Some of the shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

F9 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $95.12 to $96.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 27

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,219

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F2 · shares: Some of the shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.

F8 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $94.12 to $95.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 26

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,456

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: 0001628280-19-011228 · wf-form4_156693873705674.xml · nonDerivative · entry 1

Kaul Samir · CIK 0001501915 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 15,159

F1 · kind: On August 23, 2019, shares of Common Stock of the Issuer held by Khosla Ventures IV, LP, Khosla Ventures IV (CF), LP and Khosla Ventures Associates IV, LLC were distributed to their underlying partners and members. As part of such distributions, Mr. Kaul received 13,754 shares of the Issuer's Common Stock.

F2 · ownership.nature: Consists of securities held of record by a trust for the benefit of Mr. Kaul and his family.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · derivative · entry 31

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,095,436

Underlying: COMMON STOCK · 11,489 shares

Expires 2022-07-13

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.

F12 · derivative.exercise_date: The stock option vests and becomes exercisable in equal monthly installments over 48 months commencing on April 23, 2017.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 25

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,556

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 24

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,558

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.69 to $100.13, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 23

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,592

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.63 to $99.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 22

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,803

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.63 to $98.61, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 21

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 11,088

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.62 to $97.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 20

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Sana Talasaz 2018 Irrevocable Trust

Disclosed balance after: 11,291

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $95.59 to $96.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 19

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,555

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 18

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,557

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.69 to $100.13, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 17

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,591

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.63 to $99.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 16

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 10,802

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.63 to $98.61, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 15

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 11,088

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.62 to $97.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 14

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Samar Talasaz 2018 Irrevocable Trust

Disclosed balance after: 11,291

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $95.59 to $96.56, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 13

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,641,788

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

SEC source: 0001628280-19-011195 · wf-form4_156686291802686.xml · nonDerivative · entry 12

Talasaz AmirAli · CIK 0001753159 · Director · Chairman, President and COO

10b5-1 filing: Not disclosed

Ownership: Indirect · Shares held by Talasaz and Eskandari 2017 Family Trust

Disclosed balance after: 3,641,857

F1 · shares: These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $99.69 to $100.13, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder, 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 set forth in this footnote.