Kenneth L. Londoner is Director & 10% Owner at BioSig Technologies, Inc. (BSGM). They have made 8 open-market trades across 2 companies since 2015, most recently 2026-09-02.
CIK 0001530766
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.
4 open-market purchases totalling $119K since 2015, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BSGM | 521,250 | $3.2M |
| STEX | 2,885,814 | $1.1M |
| Total | $4.3M |
Shares reported on the most recent Form 4, priced at the 2026-09-03 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| STEX | SELL | 2026-09-02 | 2026-09-03 | $0.72 | $52K | -10.2% | -13.1% | — |
| BSGM | SELL | 2016-08-15 | 2017-03-31 | $1.35 | $303K | -24.4% | -5.4% | -5.4% |
| BSGM | BUY | 2016-08-12 | 2017-03-31 | $1.28 | $33K | -24.4% | -5.4% | -5.4% |
| BSGM | BUY | 2016-04-07 | 2017-03-31 | $1.27 | $39K | -24.4% | -5.4% | -5.4% |
| BSGM | SELL | 2016-03-24 | 2017-03-31 | $1.39 | $182K | -24.4% | -5.4% | -5.4% |
| BSGM | BUY | 2016-02-05 | 2017-03-31 | $1.15 | $45K | -24.4% | -5.4% | -5.4% |
| BSGM | SELL | 2016-01-27 | 2017-03-31 | $1.14 | $142K | -24.4% | -5.4% | -5.4% |
| BSGM | BUY | 2015-07-30 | 2017-03-31 | $1.79 | $3K | -24.4% | -5.4% | -5.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.