Watch BLKB. Know when insiders buy.
One email the day a filing lands. Free.
| Report date | Shares short | Change | % of shares out | Avg daily volume | Days to cover |
|---|---|---|---|---|---|
| 2026-08-14 | 3.6M | −584K | 7.92% | 560K | 6.4 |
| 2026-07-31 | 4.2M | −658K | 9.21% | 861K | 4.9 |
| 2026-07-15 | 4.8M | −361K | 10.66% | 562K | 8.6 |