Michael D. Dale is CEO at ATS MEDICAL INC (ATSI). They have made 10 open-market trades across 3 companies since 2007, most recently 2026-06-01.
CIK 0001172346
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.
0 open-market purchases, against 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ABT | 45,133 | $4.7M |
| AXGN | 63,537 | $2.2M |
| CVRX | 29,005 | $38K |
| ATSI | 290,452 | — |
| GID | 20,886 | — |
| Total | $7.0M |
Shares reported on the most recent Form 4, priced at the 2026-06-03 close. 2 holdings could not be priced and are excluded from the total.
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 |
|---|---|---|---|---|---|---|---|---|
| AXGN | SELL | 2025-12-10 | 2025-12-12 | $30.00 | $750K | +8.3% | +4.7% | +5.4% |
| AXGN | SELL | 2025-12-09 | 2025-12-10 | $31.21 | $3.8M | +9.6% | +12.1% | +2.7% |
| ABT | SELL | 2023-03-01 | 2023-03-02 | $100.70 | $243K | -4.2% | -1.3% | -0.9% |
| ABT | SELL | 2022-03-08 | 2022-03-10 | $117.00 | $468K | +3.8% | +2.2% | -2.3% |
| ABT | SELL | 2022-03-01 | 2022-03-02 | $118.15 | $249K | -4.4% | -1.8% | -2.8% |
| ABT | SELL | 2021-07-28 | 2021-07-30 | $120.33 | $2.1M | -0.0% | +3.7% | +5.1% |
| ABT | SELL | 2021-03-01 | 2021-03-02 | $120.61 | $356K | -4.1% | -2.3% | -13.1% |
| ABT | SELL | 2020-03-02 | 2020-03-03 | $77.89 | $123K | +1.2% | -1.5% | +15.3% |
| ABT | SELL · 10b5-1 | 2020-02-19 | 2020-02-19 | $88.97 | $35K | -8.4% | -23.7% | -1.0% |
| ATSI | SELL · 10b5-1 | 2010-03-15 | 2010-03-17 | $2.51 | $224K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2010-01-11 | 2010-01-12 | $3.26 | $14K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-11-11 | 2009-11-12 | $2.85 | $71K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-10-12 | 2009-10-13 | $2.76 | $69K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-07-10 | 2009-07-10 | $3.10 | $78K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-06-10 | 2009-06-11 | $2.91 | $73K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-05-11 | 2009-05-13 | $2.79 | $139K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-03-16 | 2009-03-17 | $2.12 | $99K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2009-01-12 | 2009-01-13 | $2.79 | $12K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2008-09-10 | 2009-09-10 | $2.66 | $67K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2008-08-10 | 2009-08-10 | $3.00 | $75K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2008-07-31 | 2009-08-03 | $3.46 | $64K | N/A | N/A | N/A |
| ATSI | SELL | 2008-03-18 | 2008-03-19 | $1.45 | $16K | N/A | N/A | N/A |
| ATSI | SELL | 2008-03-17 | 2008-03-17 | $1.45 | $16K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2008-01-11 | 2008-01-14 | $1.99 | $48K | N/A | N/A | N/A |
| ATSI | SELL · 10b5-1 | 2007-03-02 | 2007-03-05 | $2.37 | $39K | 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.