Ken Ludlum is Director at NATUS MEDICAL INC (BABY). They have made 17 open-market trades across 3 companies since 2006, most recently 2024-12-05.
CIK 0001255825
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 $1.4M since 2006, against 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PSNL | SELL | 2020-08-14 | 2020-08-18 | $20.17 | $807K | -2.1% | +2.4% | +22.7% |
| BABY | SELL | 2019-08-01 | 2019-08-02 | $31.94 | $807K | N/A | N/A | N/A |
| PSNL | BUY | 2019-06-24 | 2019-06-24 | $17.00 | $1.2M | -23.1% | -26.3% | -41.3% |
| BABY | SELL | 2019-06-11 | 2019-06-13 | $24.41 | $207K | +0.9% | +5.7% | N/A |
| BABY | SELL | 2019-05-31 | 2019-06-04 | $24.84 | $149K | -7.2% | -0.8% | N/A |
| BABY | SELL | 2019-05-10 | 2019-05-13 | $26.28 | $395K | +2.3% | -4.3% | N/A |
| BABY | SELL | 2018-10-26 | 2018-12-03 | $31.02 | $931K | -8.7% | -6.2% | -18.8% |
| BABY | SELL | 2018-08-02 | 2018-08-06 | $36.89 | $295K | +0.1% | -0.8% | -16.5% |
| BABY | SELL | 2018-03-02 | 2018-03-06 | $31.68 | $127K | +3.7% | +5.1% | +16.6% |
| BABY | SELL | 2016-02-16 | 2016-02-18 | $33.02 | $434K | +9.8% | +18.3% | -0.6% |
| BABY | SELL | 2015-05-27 | 2015-05-29 | $36.57 | $91K | -19.4% | -3.4% | -3.4% |
| CDNA | BUY | 2014-07-22 | 2014-07-23 | $10.00 | $70K | -15.0% | +1.0% | +1.0% |
| BABY | SELL | 2014-05-30 | 2014-06-03 | $24.77 | $62K | -19.4% | -3.4% | -3.4% |
| BABY | SELL | 2012-06-08 | 2012-06-12 | $10.65 | $53K | -19.4% | -3.4% | -3.4% |
| BABY | SELL | 2011-11-04 | 2011-11-08 | $8.25 | $33K | -19.4% | -3.4% | -3.4% |
| BABY | BUY | 2007-08-21 | 2007-08-23 | $15.99 | $64K | -19.4% | -3.4% | -3.4% |
| BABY | BUY | 2006-08-25 | 2006-08-29 | $13.20 | $40K | -19.4% | -3.4% | -3.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.