Charles K. Bobrinskoy is Director at INNERWORKINGS INC (INWK). They have made 5 open-market trades across 2 companies since 2009, most recently 2021-06-02.
CIK 0001444467
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.
5 open-market purchases totalling $228K since 2009, never a sale. Across 5 scored buys the stock is up 4.6% at ninety days, and 2.8 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 20% | 40% |
| Avg Move | -2.0% | -0.4% | +4.6% |
| Alpha | -0.3% | -4.7% | -2.8% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ACIW | BUY | 2020-12-03 | 2020-12-07 | $38.43 | $100K | +0.7% | -0.2% | +0.1% |
| INWK | BUY | 2020-03-20 | 2020-03-23 | $1.11 | $22K | +12.7% | +9.8% | +34.8% |
| INWK | BUY | 2013-05-16 | 2013-05-17 | $10.90 | $33K | -7.8% | -3.9% | -3.9% |
| INWK | BUY | 2009-09-08 | 2009-09-10 | $4.58 | $46K | -7.8% | -3.9% | -3.9% |
| INWK | BUY | 2009-03-23 | 2009-03-24 | $3.80 | $27K | -7.8% | -3.9% | -3.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.