Lawrence A. Siebert files SEC Form 4 disclosures for CHEMBIO DIAGNOSTICS, INC.. They have made 8 open-market trades across 1 company since 2008, most recently 2014-03-31.
CIK 0001291343
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.
6 open-market purchases totalling $170K since 2008, against 2 sales. Across 6 scored buys the stock is down 1.0% at ninety days, and 1.2 points behind the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 0% | 0% |
| Avg Move | -11.6% | -1.0% | -1.0% |
| Alpha | -5.8% | -1.2% | -1.2% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CEMI | SELL · 10b5-1 | 2013-11-08 | 2013-11-12 | $3.63 | $109K | -11.6% | -1.0% | -1.0% |
| CEMI | SELL | 2012-09-12 | 2012-09-14 | $4.38 | $51K | -11.6% | -1.0% | -1.0% |
| CEMI | SELL | 2012-09-07 | 2012-09-11 | $4.39 | $40K | -11.6% | -1.0% | -1.0% |
| CEMI | BUY | 2011-12-09 | 2011-12-12 | $0.43 | $9K | -11.6% | -1.0% | -1.0% |
| CEMI | BUY | 2011-12-05 | 2011-12-07 | $0.42 | $9K | -11.6% | -1.0% | -1.0% |
| CEMI | BUY | 2011-03-11 | 2011-03-15 | $0.42 | $27K | -11.6% | -1.0% | -1.0% |
| CEMI | BUY | 2008-09-08 | 2008-09-09 | $0.18 | $18K | -11.6% | -1.0% | -1.0% |
| CEMI | BUY | 2008-05-15 | 2008-05-19 | $0.11 | $85K | -11.6% | -1.0% | -1.0% |
| CEMI | BUY | 2008-03-14 | 2008-03-17 | $0.15 | $23K | -11.6% | -1.0% | -1.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.