WORK insider transactions

SEC Form 4: Jordan Sheila B closing all direct ownership in the company

SEC Form 4: Butterfield Stewart converted options into 38,355,865 units of Class A Common Stock, closing all direct ownership in the company

SEC Form 4: Yehoshua Tamar closing all direct ownership in the company

SEC Form 4: Friar Sarah converted options into 406,017 units of Class A Common Stock, closing all direct ownership in the company

SEC Form 4: Schellhase David closing all direct ownership in the company

SEC Form 4: COOPER EDITH W converted options into 34,179 units of Class A Common Stock, closing all direct ownership in the company

SEC Form 4: SMITH GRAHAM converted options into 150,000 units of Class A Common Stock, closing all direct ownership in the company

SEC Form 4: OFARRELL JOHN closing all direct ownership in the company

SEC Form 4: MCNAMARA MICHAEL M closing all direct ownership in the company

SEC Form 4: Frati Robert closing all direct ownership in the company

SEC Form 4: Henderson Cal converted options into 14,481,725 units of Class A Common Stock, closing all direct ownership in the company

SEC Form 4: Braccia Andrew closing all direct ownership in the company

SEC Form 4: Zell Brandon closing all direct ownership in the company

SEC Form 4: Shim Allen closing all direct ownership in the company

SEC Form 4: Frati Robert sold $120,735 worth of Class A Common Stock (2,726 units at $44.29), decreasing direct ownership by 0.87% to 311,483 units (tax withholding)

SEC Form 4: Butterfield Stewart sold $4,837,175 worth of Class A Common Stock (109,290 units at $44.26) and converted options into 228,801 units of Class A Common Stock, increasing direct ownership by 12% to 1,093,181 units (for withholding tax)

SEC Form 4: Zell Brandon converted options into 2,812 units of Class A Common Stock and sold $147,840 worth of Class A Common Stock (3,338 units at $44.29), decreasing direct ownership by 0.28% to 189,116 units to satisfy withholding tax

SEC Form 4: Yehoshua Tamar converted options into 89,246 units of Class A Common Stock and sold $4,086,615 worth of Class A Common Stock (92,056 units at $44.39), decreasing direct ownership by 3% to 83,517 units (for tax liability)

SEC Form 4: Schellhase David sold $66,391 worth of Class A Common Stock (1,499 units at $44.29), decreasing direct ownership by 0.45% to 328,293 units to satisfy tax liability

SEC Form 4: Shim Allen sold $85,258 worth of Class A Common Stock (1,925 units at $44.29), decreasing direct ownership by 0.81% to 234,894 units to satisfy withholding tax

SEC Form 4: COOPER EDITH W converted options into 17,089 units of Class A Common Stock, increasing direct ownership by 7% to 245,103 units

SEC Form 4 filed by Slack Technologies, Inc.

SEC Form 4: Schellhase David converted 6,250 units into Class A Common Stock and sold $146,052 worth of Class A Common Stock (3,333 units at $43.82), increasing direct ownership by 0.89% to 329,792 units (withholding tax)

SEC Form 4: Yehoshua Tamar sold $3,686,992 worth of Class A Common Stock (85,744 units at $43.00), decreasing direct ownership by 50% to 86,327 units

SEC Form 4: Henderson Cal sold $237,149 worth of Class A Common Stock (5,637 units at $42.07) and converted 5,637 units into Class A Common Stock to satisfy withholding obligation

SEC Form 4: Schellhase David sold $140,219 worth of Class A Common Stock (3,333 units at $42.07) and converted 6,250 units into Class A Common Stock, increasing direct ownership by 0.90% to 326,875 units to cover taxes

SEC Form 4: Zell Brandon converted 7,500 units into Class A Common Stock and sold $168,238 worth of Class A Common Stock (3,999 units at $42.07), increasing direct ownership by 2% to 189,642 units to satisfy tax liability

SEC Form 4: Frati Robert converted 23,250 units into Class A Common Stock and sold $521,584 worth of Class A Common Stock (12,398 units at $42.07), increasing direct ownership by 4% to 314,209 units (withholding obligation)

SEC Form 4: Shim Allen converted 56,406 units into Class A Common Stock and sold $1,191,464 worth of Class A Common Stock (28,321 units at $42.07), increasing direct ownership by 16% to 203,687 units (withholding tax)

SEC Form 4: Butterfield Stewart sold $10,515,000 worth of Class A Common Stock (250,000 units at $42.06), decreasing direct ownership by 20% to 973,670 units

SEC Form 4: Shim Allen sold $8,272,583 worth of Class A Common Stock (196,405 units at $42.12), decreasing direct ownership by 30% to 175,602 units

SEC Form 4: Robert Frati sold $112,270 worth of Class A Common Stock (2,725 units at $41.20), decreasing direct ownership by 0.89% to 303,357 units

SEC Form 4: Tamar Yehoshua converted 89,246 units into Class A Common Stock and sold $2,022,178 worth of Class A Common Stock (49,082 units at $41.20), increasing direct ownership by 30% to 172,071 units

SEC Form 4: Graham Smith sold $328,080 worth of Class A Common Stock (8,000 units at $41.01), decreasing direct ownership by 25% to 23,854 units

SEC Form 4: Cal Henderson sold $44,166 worth of Class A Common Stock (1,072 units at $41.20), decreasing direct ownership by 3% to 39,737 units

SEC Form 4: David Schellhase sold $61,759 worth of Class A Common Stock (1,499 units at $41.20), decreasing direct ownership by 0.46% to 323,958 units

SEC Form 4: Stewart Butterfield sold $4,210,541 worth of Class A Common Stock (102,148 units at $41.22) and converted 228,801 units into Class A Common Stock, increasing direct ownership by 12% to 1,223,670 units

SEC Form 4: Allen Shim sold $79,310 worth of Class A Common Stock (1,925 units at $41.20), decreasing direct ownership by 0.76% to 252,007 units

SEC Form 4: W Edith Cooper converted 17,089 units into Class A Common Stock, increasing direct ownership by 8% to 228,014 units

SEC Form 4: Brandon Zell converted 4,376 units into Class A Common Stock and sold $171,928 worth of Class A Common Stock (4,173 units at $41.20), increasing direct ownership by 0.11% to 185,354 units

SEC Form 4: Tamar Yehoshua exercised 8,226 units of Class A Common Stock at a strike of $24.31, increasing direct ownership by 7% to 131,907 units

SEC Form 4: Allen Shim converted 9,375 units into Class A Common Stock and sold $193,734 worth of Class A Common Stock (4,708 units at $41.15), increasing ownership by 2% to 253,932 units

SEC Form 4: David Schellhase converted 6,250 units into Class A Common Stock and sold $137,153 worth of Class A Common Stock (3,333 units at $41.15), increasing ownership by 0.90% to 325,457 units

SEC Form 4: Brandon Zell was granted 14,132 units of Class A Common Stock, increasing ownership by 8% to 185,151 units

SEC Form 4: Allen Shim converted 56,407 units into Class A Common Stock and sold $1,074,070 worth of Class A Common Stock (25,302 units at $42.45), increasing ownership by 14% to 249,265 units

SEC Form 4: Cal Henderson converted 4,279 units into Class A Common Stock and sold $181,644 worth of Class A Common Stock (4,279 units at $42.45)

SEC Form 4: Brandon Zell converted 7,500 units into Class A Common Stock and sold $319,250 worth of Class A Common Stock (7,500 units at $42.57)

SEC Form 4: David Schellhase converted 6,250 units into Class A Common Stock and sold $141,061 worth of Class A Common Stock (3,323 units at $42.45), increasing ownership by 0.92% to 322,540 units

SEC Form 4: Robert Frati converted 23,250 units into Class A Common Stock and sold $406,416 worth of Class A Common Stock (9,574 units at $42.45), increasing ownership by 5% to 306,082 units