## David M. Wehner

David M. Wehner is on the board of Alector, Inc. and Chief Financial Officer for Facebook, Inc.

He previously was Chief Financial Officer at Zynga, Inc., Principal at Hambrecht & Quist Group, Inc. and Managing Director at Allen & Co., Inc.

He received an undergraduate degree from Georgetown University and a graduate degree from Stanford University.

## Transactions

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 |

11/16/2015 | 200 | Disposition at $103.91 per share. | 20,782 |

11/16/2015 | 2,200 | Disposition at $103.12 per share. | 226,864 |

11/16/2015 | 4,987 | Disposition at $102.18 per share. | 509,572 |

11/16/2015 | 5,200 | Disposition at $101.32 per share. | 526,864 |

11/15/2015 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

11/15/2015 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/20/2015 | 8,072 | Disposition at $93.56 per share. | 755,217 |

08/17/2015 | 12,587 | Disposition at $93.74 per share. | 1,179,906 |

08/15/2015 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

08/15/2015 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |

06/23/2015 | 4,613 | Disposition at $85 per share. | 392,105 |

05/20/2015 | 3,459 | Disposition at $80.47 per share. | 278,346 |

05/15/2015 | 1,500 | Disposition at $81.27 per share. | 121,905 |

05/15/2015 | 11,087 | Disposition at $80.64 per share. | 894,056 |

05/15/2015 | 5,370 | Derivative/Non-derivative trans. at $0 per share. | 0 |

05/15/2015 | 18,750 | Derivative/Non-derivative trans. at $0 per share. | 0 |