Insider trading activities (stock purchases, sales, and option exercises)
reported by insiders of Slack Technologies, Inc. (WORK)
since 2019 are shown in Table 1 and Table 2.
Table 1 shows the monthly insider trading data of Slack Technologies, Inc..
(See page 1 of this report.) Table 2 shows the detailed insider transactions.
This company's CIK number is 1764925.
Total stock buying since 2019: $0.
Total stock sales since 2019: $1,667,720,252.
Total stock option exercises since 2019: $6,034,374.
Table 3. Detailed insider trading at Slack Technologies, Inc. (WORK) , Part 4
| Trade Date |
Insider Name |
Trade Type |
Shares |
Price ($) |
Value ($) |
| 2019-10-24 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 21.03 | 31,545 |
| 2019-10-24 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 21.06 | 52,650 |
| 2019-10-23 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 21.04 | 31,560 |
| 2019-10-23 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 21.03 | 52,575 |
| 2019-10-22 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 21.75 | 32,617 |
| 2019-10-22 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 21.73 | 54,325 |
| 2019-10-21 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 22.33 | 33,495 |
| 2019-10-21 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 22.34 | 55,850 |
| 2019-10-18 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 22.39 | 33,592 |
| 2019-10-18 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 22.34 | 55,850 |
| 2019-10-17 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.51 | 35,265 |
| 2019-10-17 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 23.57 | 58,925 |
| 2019-10-16 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.14 | 34,710 |
| 2019-10-16 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 23.15 | 57,875 |
| 2019-10-15 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 24.56 | 36,840 |
| 2019-10-15 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 24.58 | 61,449 |
| 2019-10-14 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.04 | 37,560 |
| 2019-10-14 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.23 | 63,062 |
| 2019-10-11 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.49 | 38,235 |
| 2019-10-11 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.50 | 63,750 |
| 2019-10-10 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 24.16 | 36,232 |
| 2019-10-10 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 24.14 | 60,350 |
| 2019-10-09 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 24.81 | 37,215 |
| 2019-10-09 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 24.80 | 62,000 |
| 2019-10-08 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.98 | 38,962 |
| 2019-10-08 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.70 | 64,250 |
| 2019-10-07 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.48 | 38,220 |
| 2019-10-07 | Shim Allen (Chief Financial Officer) | Sale | 3,721 | 26.00 | 96,746 |
| 2019-10-07 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.62 | 64,062 |
| 2019-10-04 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 24.57 | 36,855 |
| 2019-10-04 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 24.64 | 61,600 |
| 2019-10-03 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.97 | 35,955 |
| 2019-10-03 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 24.05 | 60,125 |
| 2019-10-02 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.05 | 34,575 |
| 2019-10-02 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 23.09 | 57,712 |
| 2019-10-01 | Zell Brandon (Chief Accounting Officer) | Sale | 2,610 | 22.98 | 59,977 |
| 2019-10-01 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.38 | 35,062 |
| 2019-10-01 | Shim Allen (Chief Financial Officer) | Sale | 3,905 | 22.98 | 89,736 |
| 2019-10-01 | Butterfield Stewart (Chief Executive Officer) | Sale | 120,609 | 23.19 | 2,797,284 |
| 2019-09-30 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.30 | 34,957 |
| 2019-09-30 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 23.48 | 58,687 |
| 2019-09-27 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 22.16 | 33,232 |
| 2019-09-27 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 22.18 | 55,450 |
| 2019-09-26 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 22.45 | 33,675 |
| 2019-09-26 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 22.47 | 56,175 |
| 2019-09-25 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 22.49 | 33,735 |
| 2019-09-25 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 22.42 | 56,050 |
| 2019-09-24 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 23.86 | 35,782 |
| 2019-09-24 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 23.79 | 59,462 |
| 2019-09-23 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 24.56 | 36,840 |
| 2019-09-23 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 24.59 | 61,475 |
| 2019-09-20 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.50 | 38,250 |
| 2019-09-20 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.47 | 63,675 |
| 2019-09-19 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.48 | 38,220 |
| 2019-09-19 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.49 | 63,724 |
| 2019-09-18 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.89 | 38,827 |
| 2019-09-18 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.94 | 64,850 |
| 2019-09-17 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 26.82 | 40,230 |
| 2019-09-17 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 26.84 | 67,112 |
| 2019-09-16 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.19 | 37,785 |
| 2019-09-16 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.35 | 63,375 |
| 2019-09-13 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.36 | 38,032 |
| 2019-09-13 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.22 | 63,050 |
| 2019-09-12 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.50 | 38,250 |
| 2019-09-12 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.53 | 63,825 |
| 2019-09-11 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.95 | 38,932 |
| 2019-09-11 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.60 | 64,000 |
| 2019-09-10 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 25.51 | 38,265 |
| 2019-09-10 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.96 | 64,907 |
| 2019-09-09 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 26.09 | 39,142 |
| 2019-09-09 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 25.82 | 64,557 |
| 2019-09-06 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 28.71 | 43,069 |
| 2019-09-06 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 28.60 | 71,492 |
| 2019-09-05 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 28.07 | 42,100 |
| 2019-09-05 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 28.70 | 71,737 |
| 2019-09-04 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.25 | 45,382 |
| 2019-09-04 | Shim Allen (Chief Financial Officer) | Sale | 4,667 | 29.24 | 136,463 |
| 2019-09-04 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.56 | 76,392 |
| 2019-09-03 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 28.41 | 42,615 |
| 2019-09-03 | Shim Allen (Chief Financial Officer) | Sale | 4,708 | 28.38 | 133,613 |
| 2019-09-03 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 28.41 | 71,025 |
| 2019-09-03 | Schellhase David (General Counsel and Secretary) | Sale | 27,562 | 28.38 | 782,209 |
| 2019-08-30 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 29.24 | 43,860 |
| 2019-08-30 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 29.28 | 73,200 |
| 2019-08-29 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 29.64 | 44,460 |
| 2019-08-29 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 29.68 | 74,200 |
| 2019-08-28 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 29.34 | 44,010 |
| 2019-08-28 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 29.36 | 73,387 |
| 2019-08-27 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.47 | 45,705 |
| 2019-08-27 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.45 | 76,112 |
| 2019-08-26 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.65 | 45,975 |
| 2019-08-26 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.72 | 76,800 |
| 2019-08-23 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.04 | 45,060 |
| 2019-08-23 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.09 | 75,225 |
| 2019-08-22 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.28 | 46,920 |
| 2019-08-22 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 31.29 | 78,225 |
| 2019-08-21 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.00 | 46,500 |
| 2019-08-21 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.99 | 77,475 |
| 2019-08-20 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.53 | 45,795 |
| 2019-08-20 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.52 | 76,300 |
| 2019-08-19 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.10 | 46,650 |
| 2019-08-19 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 31.10 | 77,750 |
| 2019-08-16 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.15 | 45,225 |
| 2019-08-16 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.15 | 75,375 |
| 2019-08-15 | Zell Brandon (Chief Accounting Officer) | Sale | 4,850 | 30.08 | 145,888 |
| 2019-08-15 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.42 | 45,630 |
| 2019-08-15 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.39 | 75,975 |
| 2019-08-14 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.26 | 45,390 |
| 2019-08-14 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.32 | 75,800 |
| 2019-08-13 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.36 | 47,040 |
| 2019-08-13 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 31.35 | 78,375 |
| 2019-08-12 | Henderson Cal (Chief Technology Officer) | Sale | 3,000 | 31.11 | 93,344 |
| 2019-08-12 | Shim Allen (Chief Financial Officer) | Sale | 63,590 | 30.65 | 1,949,032 |
| 2019-08-12 | Butterfield Stewart (Chief Executive Officer) | Sale | 5,000 | 31.14 | 155,700 |
| 2019-08-12 | Schellhase David (General Counsel and Secretary) | Sale | 10,000 | 30.41 | 304,100 |
| 2019-08-09 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.05 | 46,575 |
| 2019-08-09 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.96 | 77,400 |
| 2019-08-08 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.15 | 46,725 |
| 2019-08-08 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 31.19 | 77,975 |
| 2019-08-07 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.67 | 46,005 |
| 2019-08-07 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.69 | 76,725 |
| 2019-08-06 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.58 | 47,370 |
| 2019-08-06 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 31.57 | 78,912 |
| 2019-08-05 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 30.19 | 45,285 |
| 2019-08-05 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 30.32 | 75,800 |
| 2019-08-02 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 31.19 | 46,785 |
| 2019-08-02 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 31.09 | 77,725 |
| 2019-08-01 | Zell Brandon (Chief Accounting Officer) | Sale | 3,791 | 32.78 | 124,268 |
| 2019-08-01 | Henderson Cal (Chief Technology Officer) | Sale | 14,898 | 32.83 | 489,056 |
| 2019-08-01 | Shim Allen (Chief Financial Officer) | Sale | 28,510 | 32.78 | 934,557 |
| 2019-08-01 | Frati Robert (Sr VP Sales, Customer Success) | Sale | 33,300 | 32.78 | 1,091,574 |
| 2019-08-01 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 32.76 | 81,887 |
| 2019-08-01 | Schellhase David (General Counsel and Secretary) | Sale | 3,160 | 32.78 | 103,584 |
| 2019-07-31 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 33.20 | 49,800 |
| 2019-07-31 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 33.59 | 83,975 |
| 2019-07-30 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 32.45 | 48,675 |
| 2019-07-30 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 32.43 | 81,075 |
| 2019-07-29 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 33.37 | 50,047 |
| 2019-07-29 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 33.34 | 83,337 |
| 2019-07-26 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 33.78 | 50,670 |
| 2019-07-26 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 33.79 | 84,475 |
| 2019-07-25 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 33.84 | 50,760 |
| 2019-07-25 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 33.83 | 84,575 |
| 2019-07-24 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 33.82 | 50,730 |
| 2019-07-24 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 33.82 | 84,550 |
| 2019-07-23 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 34.31 | 51,465 |
| 2019-07-23 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 34.38 | 85,950 |
| 2019-07-22 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 32.24 | 48,360 |
| 2019-07-22 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 32.62 | 81,542 |
| 2019-07-19 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 32.14 | 48,210 |
| 2019-07-19 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 32.17 | 80,425 |
| 2019-07-18 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 32.79 | 49,185 |
| 2019-07-18 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 32.78 | 81,950 |
| 2019-07-17 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 34.37 | 51,547 |
| 2019-07-17 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 34.36 | 85,900 |
| 2019-07-16 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 34.69 | 52,035 |
| 2019-07-16 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 34.66 | 86,649 |
| 2019-07-15 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 34.73 | 52,087 |
| 2019-07-15 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 34.73 | 86,824 |
| 2019-07-12 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 34.34 | 51,517 |
| 2019-07-12 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 34.28 | 85,712 |
| 2019-07-11 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.02 | 52,530 |
| 2019-07-11 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.00 | 87,500 |
| 2019-07-10 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.77 | 53,647 |
| 2019-07-10 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.72 | 89,300 |
| 2019-07-09 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.09 | 52,635 |
| 2019-07-09 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.14 | 87,850 |
| 2019-07-08 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.13 | 52,695 |
| 2019-07-08 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.11 | 87,775 |
| 2019-07-05 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.69 | 53,535 |
| 2019-07-05 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.70 | 89,250 |
| 2019-07-03 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.98 | 53,969 |
| 2019-07-03 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.99 | 89,975 |
| 2019-07-02 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 36.43 | 54,645 |
| 2019-07-02 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 36.43 | 91,075 |
| 2019-07-01 | Zell Brandon (Chief Accounting Officer) | Sale | 2,198 | 37.15 | 81,655 |
| 2019-07-01 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 37.44 | 56,152 |
| 2019-07-01 | Shim Allen (Chief Financial Officer) | Sale | 3,728 | 38.08 | 141,962 |
| 2019-07-01 | Butterfield Stewart (Chief Executive Officer) | Sale | 111,263 | 37.45 | 4,166,354 |
| 2019-06-28 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 36.59 | 54,885 |
| 2019-06-28 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 36.70 | 91,750 |
| 2019-06-27 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 37.28 | 55,920 |
| 2019-06-27 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 37.16 | 92,887 |
| 2019-06-26 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 36.81 | 55,222 |
| 2019-06-26 | Frati Robert (Sr VP Sales, Customer Success) | Sale | 50,000 | 37.04 | 1,852,000 |
| 2019-06-26 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 36.88 | 92,200 |
| 2019-06-25 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 35.72 | 53,580 |
| 2019-06-25 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 35.74 | 89,362 |
| 2019-06-24 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 36.23 | 54,344 |
| 2019-06-24 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 36.42 | 91,050 |
| 2019-06-21 | Henderson Cal (Chief Technology Officer) | Sale | 1,500 | 38.27 | 57,405 |
| 2019-06-21 | Frati Robert (Sr VP Sales, Customer Success) | Sale | 100,000 | 37.43 | 3,743,000 |
| 2019-06-21 | Butterfield Stewart (Chief Executive Officer) | Sale | 2,500 | 38.09 | 95,217 |
| 2019-06-21 | Schellhase David (General Counsel and Secretary) | Sale | 100,000 | 37.47 | 3,747,000 |
| 2019-06-20 | Zell Brandon (Chief Accounting Officer) | Sale | 59,145 | 39.85 | 2,357,223 |
| 2019-06-20 | Henderson Cal (Chief Technology Officer) | Sale | 97,842 | 40.08 | 3,921,898 |
| 2019-06-20 | Shim Allen (Chief Financial Officer) | Sale | 502,925 | 38.55 | 19,390,273 |
| 2019-06-20 | Frati Robert (Sr VP Sales, Customer Success) | Sale | 276,238 | 38.61 | 10,665,549 |
| 2019-06-20 | Butterfield Stewart (Chief Executive Officer) | Sale | 1,358,409 | 39.63 | 53,831,031 |
| 2019-06-20 | Palihapitiya Chamath (Director) | Sale | 1,017,067 | 39.30 | 39,971,750 |
| 2019-06-20 | Social Capital Partnership Opportunities Fund Gp, L.p. (10% Owner) | Sale | 1,017,067 | 39.30 | 39,971,750 |
| 2019-06-20 | Social Capital Partnership Gp Iii, L.p. (10% Owner) | Sale | 1,017,067 | 39.30 | 39,971,750 |
| 2019-06-20 | Ah Equity Partners Iv (parallel), L.l.c. | Sale | 3,000,000 | 38.80 | 116,415,000 |
| 2019-06-20 | Ah Equity Partners Iii, L.l.c. | Sale | 3,000,000 | 38.80 | 116,415,000 |
| 2019-06-20 | Braccia Andrew | Sale | 8,500,000 | 39.63 | 336,855,000 |
| 2019-06-20 | Accel Investors 2009 L.l.c. | Sale | 8,500,000 | 39.63 | 336,855,000 |
| 2019-06-20 | Schellhase David (General Counsel and Secretary) | Sale | 249,339 | 38.61 | 9,626,978 |
| 2019-06-20 | Ofarrell John | Sale | 3,000,000 | 38.80 | 116,415,000 |
| 2019-06-20 | Horowitz Benjamin A | Sale | 3,000,000 | 38.80 | 116,415,000 |
Insider trading activities including stock purchases, stock sales, and option exercises
of WORK listed in the above tables cannot be completely guaranteed as to their accuracy.
For more insider trading information of Slack Technologies, Inc. (symbol WORK,
CIK number 1764925) see
the Securities and Exchange Commission (SEC) website.