Stewart Butterfield is CEO at Slack Technologies, Inc. (WORK). They have made 158 open-market trades across 1 company since 2019, most recently 2021-07-21.
CIK 0001775610
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 158 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WORK | 39,449,046 | $1.8B |
Shares reported on the most recent Form 4, priced at the 2021-07-21 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WORK | SELL | 2021-07-01 | 2021-07-06 | $44.26 | $9.7M | -0.2% | N/A | N/A |
| WORK | SELL | 2021-04-15 | 2021-04-19 | $42.06 | $10.5M | +1.0% | -1.4% | +6.8% |
| WORK | SELL | 2021-04-01 | 2021-04-05 | $41.22 | $8.4M | +1.5% | -0.4% | +7.6% |
| WORK | SELL | 2021-01-05 | 2021-01-06 | $42.08 | $9.6M | +0.3% | +3.1% | -1.3% |
| WORK | SELL | 2020-11-25 | 2020-11-30 | $39.27 | $25.5M | -1.1% | -1.1% | -4.0% |
| WORK | SELL | 2020-11-23 | 2020-11-25 | $30.01 | $2.3M | +11.8% | +9.9% | +10.2% |
| WORK | SELL | 2020-10-07 | 2020-10-09 | $30.03 | $1.5M | -9.2% | -18.9% | +32.5% |
| WORK | SELL | 2020-10-01 | 2020-10-05 | $27.44 | $6.1M | +15.9% | -7.0% | +49.4% |
| WORK | SELL | 2020-09-02 | 2020-09-04 | $33.71 | $1.7M | -10.6% | -0.0% | +50.3% |
| WORK | SELL | 2020-08-20 | 2020-08-24 | $30.00 | $750K | +9.9% | -6.4% | +6.2% |
| WORK | SELL | 2020-08-05 | 2020-08-07 | $30.17 | $754K | -1.6% | +1.0% | -5.4% |
| WORK | SELL | 2020-07-15 | 2020-07-17 | $31.83 | $796K | -11.2% | -12.3% | +1.1% |
| WORK | SELL | 2020-07-13 | 2020-07-15 | $36.04 | $6.5M | -7.9% | -11.1% | +1.7% |
| WORK | SELL | 2020-07-01 | 2020-07-06 | $30.85 | $7.8M | +1.3% | -3.8% | -9.4% |
| WORK | SELL | 2020-06-17 | 2020-06-19 | $33.73 | $5.7M | -6.6% | +0.1% | -23.9% |
| WORK | SELL | 2020-06-08 | 2020-06-10 | $31.78 | $7.9M | +8.0% | +6.8% | -7.5% |
| WORK | SELL | 2020-04-01 | 2020-04-03 | $25.99 | $5.8M | +27.3% | +17.9% | +31.3% |
| WORK | SELL · 10b5-1 | 2020-03-16 | 2020-03-18 | $17.35 | $23K | +51.1% | +50.5% | +73.3% |
| WORK | SELL · 10b5-1 | 2020-03-13 | 2020-03-17 | $18.24 | $46K | +58.9% | +63.3% | +71.6% |
| WORK | SELL · 10b5-1 | 2020-03-12 | 2020-03-16 | $23.05 | $58K | +67.0% | +64.4% | +81.1% |
| WORK | SELL · 10b5-1 | 2020-03-11 | 2020-03-13 | $24.05 | $60K | +54.0% | +48.6% | +80.6% |
| WORK | SELL · 10b5-1 | 2020-03-10 | 2020-03-12 | $24.78 | $62K | +23.6% | +18.9% | +54.6% |
| WORK | SELL | 2020-03-09 | 2020-03-11 | $24.53 | $114K | +14.0% | +15.0% | +44.3% |
| WORK | SELL · 10b5-1 | 2020-03-06 | 2020-03-10 | $26.32 | $66K | -10.4% | -0.5% | +29.0% |
| WORK | SELL · 10b5-1 | 2020-03-05 | 2020-03-09 | $28.69 | $72K | -19.3% | -4.4% | +22.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.