Mark Culhane is EVP & CFO at DemandTec, Inc. (DMAN). They have made 16 open-market trades across 4 companies since 2008, most recently 2025-10-01.
CIK 0001407712
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 $1.5M since 2017, against 10 sales. Across 6 scored buys the stock is up 5.1% at ninety days, and 0.8 points behind the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 67% | 50% |
| Avg Move | +0.4% | +5.0% | +5.1% |
| Alpha | +1.6% | +3.6% | -0.8% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GNSS | BUY | 2024-08-15 | 2024-08-19 | $2.66 | $133K | +10.8% | +28.0% | +43.3% |
| TDC | SELL | 2021-05-27 | 2021-05-28 | $48.42 | $383K | -1.0% | +5.3% | +9.5% |
| TDC | SELL | 2021-03-01 | 2021-03-01 | $40.03 | $723K | +3.0% | -8.1% | +15.8% |
| TDC | SELL | 2020-11-25 | 2020-11-27 | $21.80 | $154K | +3.8% | +0.5% | +84.7% |
| TDC | BUY | 2020-03-11 | 2020-03-12 | $19.68 | $200K | -1.2% | +10.1% | +17.2% |
| TDC | BUY | 2019-11-11 | 2019-11-13 | $26.00 | $254K | +2.8% | +1.5% | -11.8% |
| TDC | BUY | 2019-05-06 | 2019-05-07 | $38.41 | $348K | -5.7% | -5.2% | -13.4% |
| TDC | BUY | 2018-11-05 | 2019-05-07 | $35.11 | $242K | -5.7% | -5.2% | -13.4% |
| TDC | BUY | 2017-12-01 | 2017-12-04 | $37.66 | $339K | +1.1% | +1.0% | +8.8% |
| CALD | SELL | 2017-02-13 | 2017-02-15 | $20.56 | $362K | -8.3% | +1.5% | +2.2% |
| CALD | SELL | 2016-08-10 | 2016-08-11 | $19.60 | $231K | +0.1% | -2.8% | -17.8% |
| CALD | SELL | 2016-08-10 | 2016-08-11 | $19.60 | $231K | +0.1% | -2.8% | -17.8% |
| CALD | SELL | 2016-05-16 | 2016-05-17 | $17.15 | $515K | +7.2% | +14.4% | +15.6% |
| CALD | SELL | 2015-08-04 | 2015-08-06 | $16.43 | $196K | -10.2% | -4.8% | -4.8% |
| CALD | SELL | 2014-11-10 | 2014-11-12 | $15.76 | $394K | -10.2% | -4.8% | -4.8% |
| DMAN | SELL · 10b5-1 | 2011-12-08 | 2011-12-09 | $13.08 | $1.8M | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2011-09-22 | 2011-09-23 | $5.71 | $65K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2011-07-25 | 2011-07-27 | $7.31 | $110K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2011-06-01 | 2011-06-03 | $9.67 | $144K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2011-05-24 | 2011-05-26 | $9.35 | $108K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2011-01-13 | 2011-01-14 | $13.00 | $897K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2011-01-10 | 2011-01-12 | $13.00 | $273K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2010-12-10 | 2010-12-10 | $10.98 | $151K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2010-11-22 | 2010-11-22 | $11.03 | $365K | N/A | N/A | N/A |
| DMAN | SELL · 10b5-1 | 2010-11-19 | 2010-11-19 | $10.95 | $446K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.