Cal Henderson is CTO at Slack Technologies, Inc. (WORK). They have made 36 open-market trades across 1 company since 2019, most recently 2021-07-21.
CIK 0001775683
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 36 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WORK | 56,632 | $2.6M |
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 | $44.29 | $133K | -0.2% | N/A | N/A |
| WORK | SELL | 2021-05-03 | 2021-05-05 | $42.07 | $474K | +0.0% | +7.3% | N/A |
| WORK | SELL | 2021-04-01 | 2021-04-05 | $41.20 | $44K | +1.5% | -0.4% | +7.6% |
| WORK | SELL | 2021-02-01 | 2021-02-03 | $42.45 | $363K | +2.8% | -6.1% | -4.1% |
| WORK | SELL | 2021-01-04 | 2021-01-06 | $41.99 | $105K | +0.3% | +3.1% | -1.3% |
| WORK | SELL | 2020-12-07 | 2020-12-09 | $43.07 | $65K | +0.9% | +0.4% | -3.5% |
| WORK | SELL | 2020-12-03 | 2020-12-07 | $42.89 | $129K | -0.9% | -2.7% | -6.8% |
| WORK | SELL | 2020-12-01 | 2020-12-03 | $43.21 | $130K | -1.5% | -1.7% | -5.8% |
| WORK | SELL | 2020-11-27 | 2020-12-01 | $41.69 | $182K | -2.4% | -2.4% | -5.1% |
| WORK | SELL · 10b5-1 | 2020-11-24 | 2020-11-27 | $30.50 | $91K | -3.2% | -2.7% | -3.9% |
| WORK | SELL · 10b5-1 | 2020-11-20 | 2020-11-24 | $30.00 | $48K | +44.4% | +44.3% | +45.0% |
| WORK | SELL | 2020-11-02 | 2020-11-04 | $25.16 | $303K | -3.0% | +59.3% | +59.0% |
| WORK | SELL · 10b5-1 | 2020-10-19 | 2020-10-21 | $31.99 | $96K | -12.8% | +1.8% | +46.5% |
| WORK | SELL · 10b5-1 | 2020-10-15 | 2020-10-19 | $32.49 | $97K | -17.3% | -17.9% | +30.1% |
| WORK | SELL · 10b5-1 | 2020-10-13 | 2020-10-15 | $32.35 | $97K | -15.0% | -20.7% | +28.7% |
| WORK | SELL · 10b5-1 | 2020-10-09 | 2020-10-13 | $30.89 | $93K | -12.4% | -21.2% | +28.1% |
| WORK | SELL · 10b5-1 | 2020-10-07 | 2020-10-09 | $30.01 | $90K | -9.2% | -18.9% | +32.5% |
| WORK | SELL | 2020-10-01 | 2020-10-05 | $27.35 | $41K | +15.9% | -7.0% | +49.4% |
| WORK | SELL · 10b5-1 | 2020-09-04 | 2020-09-09 | $30.42 | $91K | +4.8% | +21.9% | +69.1% |
| WORK | SELL · 10b5-1 | 2020-09-03 | 2020-09-04 | $31.15 | $47K | -10.6% | -0.0% | +50.3% |
| WORK | SELL | 2020-09-01 | 2020-09-03 | $34.12 | $154K | -17.6% | -7.9% | +39.1% |
| WORK | SELL · 10b5-1 | 2020-08-28 | 2020-09-01 | $32.05 | $96K | -26.6% | -20.2% | +22.5% |
| WORK | SELL · 10b5-1 | 2020-08-26 | 2020-08-28 | $30.27 | $91K | -19.1% | -15.5% | +27.0% |
| WORK | SELL · 10b5-1 | 2020-08-20 | 2020-08-24 | $30.06 | $90K | +9.9% | -6.4% | +6.2% |
| WORK | SELL · 10b5-1 | 2020-08-07 | 2020-08-11 | $30.00 | $45K | +4.6% | -6.8% | -7.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.