## David M. Wehner

David M. Wehner is on the board of Alector, Inc. and Co-Chairman of Joint Venture Silicon Valley Network and Chief Financial Officer for Facebook, Inc.

In his past career he held the position of Chief Financial Officer for Zynga, Inc., Principal at Hambrecht & Quist Group, Inc. and Managing Director at Allen & Co., Inc.

David M. Wehner received an undergraduate degree from Georgetown University and a graduate degree from Stanford University.

## Transactions

11/15/2020 | 1,806 | Disposition at $276.95 per share. | 500,172 |

11/15/2020 | 2,463 | 0 | |

11/15/2020 | 651 | 0 | |

11/15/2020 | 525 | 0 | |

11/15/2020 | 15,939 | Derivative/Non-derivative trans. at $276.95 per share. | 4,414,307 |

11/15/2020 | 7,435 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2020 | 6,848 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2020 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2020 | 335 | Derivative/Non-derivative trans. at $276.95 per share. | 92,779 |

11/15/2020 | 675 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2020 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/21/2020 | 11,828 | Disposition at $268.65 per share. | 3,177,593 |

08/19/2020 | 1,832 | Disposition at $261.39 per share. | 478,867 |

08/15/2020 | 1,806 | Disposition at $261.24 per share. | 471,800 |

08/15/2020 | 2,463 | 0 | |

08/15/2020 | 650 | 0 | |

08/15/2020 | 525 | 0 | |

08/15/2020 | 15,937 | Derivative/Non-derivative trans. at $261.24 per share. | 4,163,382 |

08/15/2020 | 7,434 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2020 | 6,848 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2020 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2020 | 335 | Derivative/Non-derivative trans. at $261.24 per share. | 87,516 |

08/15/2020 | 675 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2020 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/22/2020 | 11,764 | Disposition at $231.66 per share. | 2,725,249 |

05/19/2020 | 8,000 | Disposition at $219.9 per share. | 1,759,200 |

05/19/2020 | 1,843 | Disposition at $213 per share. | 392,559 |

05/15/2020 | 2,462 | 0 | |

05/15/2020 | 651 | 0 | |

05/15/2020 | 525 | 0 | |

05/15/2020 | 15,938 | Derivative/Non-derivative trans. at $206.81 per share. | 3,296,138 |

05/15/2020 | 7,434 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2020 | 6,848 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2020 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2020 | 335 | Derivative/Non-derivative trans. at $206.81 per share. | 69,282 |

05/15/2020 | 674 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2020 | 1,795 | Disposition at $206.81 per share. | 371,224 |

05/15/2020 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/05/2020 | 8,000 | Disposition at $209.9 per share. | 1,679,200 |

02/25/2020 | 11,884 | Disposition at $202.17 per share. | 2,402,589 |

02/20/2020 | 2,550 | Disposition at $216.52 per share. | 552,126 |

02/15/2020 | 526 | 0 | |

02/15/2020 | 299 | 0 | |

02/15/2020 | 25,127 | Derivative/Non-derivative trans. at $214.18 per share. | 5,381,701 |

02/15/2020 | 7,434 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2020 | 6,847 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2020 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2020 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2020 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2020 | 1,389 | Disposition at $214.18 per share. | 297,497 |

02/15/2020 | 2,463 | 0 | |

02/15/2020 | 651 | 0 | |

02/15/2020 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/22/2019 | 11,292 | Disposition at $198.28 per share. | 2,238,978 |

11/15/2019 | 18,736 | Derivative/Non-derivative trans. at $193.15 per share. | 3,618,859 |

11/15/2019 | 9,427 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2019 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2019 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2019 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/08/2019 | 2,000 | Gift at $0 per share. | 0 |

09/19/2019 | 2,000 | Gift at $0 per share. | 0 |

09/19/2019 | 2,000 | Gift at $0 per share. | 0 |

08/22/2019 | 11,036 | Disposition at $183.44 per share. | 2,024,444 |

08/15/2019 | 18,736 | Derivative/Non-derivative trans. at $179.71 per share. | 3,367,047 |

08/15/2019 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2019 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2019 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2019 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/09/2019 | 5,000 | Gift at $0 per share. | 0 |

07/26/2019 | 7,000 | Gift at $0 per share. | 0 |

07/26/2019 | 7,000 | Gift at $0 per share. | 0 |

05/22/2019 | 10,748 | Disposition at $184.5 per share. | 1,983,006 |

05/15/2019 | 18,736 | Derivative/Non-derivative trans. at $180.73 per share. | 3,386,158 |

05/15/2019 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2019 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2019 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2019 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

04/25/2019 | 12,500 | Disposition at $196.84 per share. | 2,460,500 |

04/24/2019 | 12,500 | Disposition at $184.9 per share. | 2,311,250 |

02/25/2019 | 4,979 | Disposition at $164.9 per share. | 821,038 |

02/19/2019 | 4,979 | Disposition at $160.35 per share. | 798,383 |

02/15/2019 | 4,674 | Derivative/Non-derivative trans. at $163.95 per share. | 766,303 |

02/15/2019 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2019 | 4,181 | Derivative/Non-derivative trans. at $163.95 per share. | 685,475 |

02/15/2019 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2019 | 4,911 | Derivative/Non-derivative trans. at $163.95 per share. | 805,159 |

02/15/2019 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2019 | 4,097 | Derivative/Non-derivative trans. at $163.95 per share. | 671,704 |

02/15/2019 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

01/31/2019 | 4,761 | Disposition at $165.59 per share. | 788,374 |

11/16/2018 | 4,761 | Disposition at $141.1 per share. | 671,778 |

11/15/2018 | 4,674 | Derivative/Non-derivative trans. at $144.22 per share. | 674,085 |

11/15/2018 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2018 | 4,182 | Derivative/Non-derivative trans. at $144.22 per share. | 603,129 |

11/15/2018 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2018 | 4,911 | Derivative/Non-derivative trans. at $144.22 per share. | 708,265 |

11/15/2018 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2018 | 4,969 | Derivative/Non-derivative trans. at $144.22 per share. | 716,630 |

11/15/2018 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/16/2018 | 9,522 | Disposition at $180.2 per share. | 1,715,865 |

08/15/2018 | 4,674 | Derivative/Non-derivative trans. at $181.11 per share. | 846,509 |

08/15/2018 | 9,427 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2018 | 4,181 | Derivative/Non-derivative trans. at $181.11 per share. | 757,221 |

08/15/2018 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2018 | 4,911 | Derivative/Non-derivative trans. at $181.11 per share. | 889,432 |

08/15/2018 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2018 | 4,970 | Derivative/Non-derivative trans. at $181.11 per share. | 900,117 |

08/15/2018 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

07/17/2018 | 10,000 | Disposition at $209.9 per share. | 2,099,000 |

06/20/2018 | 10,000 | Disposition at $199.9 per share. | 1,999,000 |

05/21/2018 | 4,761 | Disposition at $184.9 per share. | 880,309 |

05/16/2018 | 9,522 | Disposition at $183.61 per share. | 1,748,335 |

05/15/2018 | 4,674 | Derivative/Non-derivative trans. at $186.64 per share. | 872,356 |

05/15/2018 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2018 | 4,182 | Derivative/Non-derivative trans. at $186.64 per share. | 780,529 |

05/15/2018 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2018 | 4,911 | Derivative/Non-derivative trans. at $186.64 per share. | 916,590 |

05/15/2018 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2018 | 4,969 | Derivative/Non-derivative trans. at $186.64 per share. | 927,415 |

05/15/2018 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/22/2018 | 14,901 | Disposition at $178.79 per share. | 2,664,150 |

02/15/2018 | 4,674 | Derivative/Non-derivative trans. at $179.52 per share. | 839,077 |

02/15/2018 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2018 | 4,181 | Derivative/Non-derivative trans. at $179.52 per share. | 750,574 |

02/15/2018 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2018 | 4,911 | Derivative/Non-derivative trans. at $179.52 per share. | 881,623 |

02/15/2018 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2018 | 4,146 | Derivative/Non-derivative trans. at $179.52 per share. | 744,290 |

02/15/2018 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/21/2017 | 15,470 | Disposition at $179.05 per share. | 2,769,904 |

11/15/2017 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2017 | 4,401 | Derivative/Non-derivative trans. at $178.07 per share. | 783,687 |

11/15/2017 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2017 | 5,169 | Derivative/Non-derivative trans. at $178.07 per share. | 920,444 |

11/15/2017 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2017 | 5,230 | Derivative/Non-derivative trans. at $178.07 per share. | 931,307 |

11/15/2017 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2017 | 2,803 | Derivative/Non-derivative trans. at $178.07 per share. | 499,131 |

11/15/2017 | 4,919 | Derivative/Non-derivative trans. at $178.07 per share. | 875,927 |

11/15/2017 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/21/2017 | 15,470 | Disposition at $167.16 per share. | 2,585,966 |

08/15/2017 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2017 | 4,400 | Derivative/Non-derivative trans. at $170.75 per share. | 751,300 |

08/15/2017 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2017 | 5,169 | Derivative/Non-derivative trans. at $170.75 per share. | 882,607 |

08/15/2017 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2017 | 5,231 | Derivative/Non-derivative trans. at $170.75 per share. | 893,194 |

08/15/2017 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2017 | 2,803 | Derivative/Non-derivative trans. at $170.75 per share. | 478,613 |

08/15/2017 | 4,919 | Derivative/Non-derivative trans. at $170.75 per share. | 839,920 |

08/15/2017 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/19/2017 | 15,470 | Disposition at $148.47 per share. | 2,296,831 |

05/15/2017 | 9,426 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2017 | 4,401 | Derivative/Non-derivative trans. at $150.33 per share. | 661,603 |

05/15/2017 | 8,433 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2017 | 5,169 | Derivative/Non-derivative trans. at $150.33 per share. | 777,056 |

05/15/2017 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2017 | 5,230 | Derivative/Non-derivative trans. at $150.33 per share. | 786,226 |

05/15/2017 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2017 | 2,803 | Derivative/Non-derivative trans. at $150.33 per share. | 421,375 |

05/15/2017 | 4,919 | Derivative/Non-derivative trans. at $150.33 per share. | 739,474 |

05/15/2017 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

04/28/2017 | 20,000 | Disposition at $149.9 per share. | 2,998,000 |

04/24/2017 | 16,008 | Disposition at $144.96 per share. | 2,320,520 |

03/01/2017 | 806 | Disposition at $136.9 per share. | 110,342 |

03/01/2017 | 1,209 | Disposition at $136.5 per share. | 165,029 |

02/21/2017 | 6,584 | Disposition at $133.5 per share. | 878,964 |

02/15/2017 | 4,400 | Derivative/Non-derivative trans. at $133.85 per share. | 588,940 |

02/15/2017 | 8,432 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2017 | 5,169 | Derivative/Non-derivative trans. at $133.85 per share. | 691,871 |

02/15/2017 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2017 | 4,924 | Derivative/Non-derivative trans. at $133.85 per share. | 659,078 |

02/15/2017 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2017 | 2,036 | Derivative/Non-derivative trans. at $133.85 per share. | 272,519 |

02/15/2017 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/21/2016 | 5,265 | Disposition at $119.9 per share. | 631,274 |

11/21/2016 | 5,265 | Disposition at $118.2 per share. | 622,323 |

11/15/2016 | 2,200 | Disposition at $118.22 per share. | 260,084 |

11/15/2016 | 15,146 | Disposition at $117.53 per share. | 1,780,110 |

11/15/2016 | 5,640 | Disposition at $116.71 per share. | 658,245 |

11/15/2016 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2016 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2016 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2016 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/19/2016 | 10,528 | Disposition at $123.59 per share. | 1,301,156 |

08/15/2016 | 400 | Disposition at $124.78 per share. | 49,912 |

08/15/2016 | 22,587 | Disposition at $124.06 per share. | 2,802,144 |

08/15/2016 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2016 | 10,023 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2016 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2016 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/31/2016 | 5,265 | Disposition at $119.9 per share. | 631,274 |

05/19/2016 | 5,265 | Disposition at $117.07 per share. | 616,374 |

05/16/2016 | 800 | Disposition at $119.4 per share. | 95,520 |

05/16/2016 | 5,686 | Disposition at $118.59 per share. | 674,303 |

05/16/2016 | 16,500 | Disposition at $117.97 per share. | 1,946,505 |

05/15/2016 | 9,905 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2016 | 10,022 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2016 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2016 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |

04/28/2016 | 7,973 | Disposition at $119.9 per share. | 955,963 |

02/19/2016 | 7,973 | Disposition at $102.58 per share. | 817,871 |

02/16/2016 | 3,500 | Disposition at $103.54 per share. | 362,390 |

02/16/2016 | 9,000 | Disposition at $103.01 per share. | 927,090 |

02/16/2016 | 2,300 | Disposition at $101.68 per share. | 233,864 |

02/16/2016 | 17,046 | Disposition at $100.84 per share. | 1,718,919 |

02/15/2016 | 39,620 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2016 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

02/15/2016 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |