Douglas A. Roeder is Director at Senseonics Holdings, Inc. (SENS). They have made 20 open-market trades across 3 companies since 2014, most recently 2026-08-19.
CIK 0001270735
10 open-market purchases totalling $19.9M since 2014, against 10 sales. Across 8 scored buys the stock is up 68.4% at ninety days, and 66.6 points ahead of the S&P over the same stretch.
9 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| SENS | 171,191 | $1.4M |
| TNDM | 2,205 | $36K |
| TRIV | 833,333 | — |
| Total | $1.4M |
Shares reported on the most recent Form 4, priced at the 2026-08-20 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 78% | 89% | 100% |
| Avg Move | +8.2% | +30.3% | +68.4% |
| Alpha | +8.7% | +29.4% | +66.6% |
| Scored | 9 | 9 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SENS | BUY | 2026-08-19 | 2026-08-20 | $8.98 | $125K | -4.6% | -0.2% | — |
| SENS | BUY | 2026-05-12 | 2026-05-13 | $5.56 | $126K | +13.7% | +27.0% | +39.0% |
| SENS | BUY | 2026-03-13 | 2026-03-16 | $5.73 | $100K | +3.6% | +8.8% | +14.3% |
| SENS | BUY | 2025-11-07 | 2025-11-10 | $5.83 | $87K | -16.9% | +10.9% | +26.8% |
| SENS | BUY | 2024-12-13 | 2024-12-20 | $0.50 | $38K | +5.1% | +90.1% | +51.0% |
| SENS | BUY | 2024-12-12 | 2024-12-16 | $0.41 | $259K | +31.9% | +58.4% | +37.9% |
| SENS | BUY | 2023-08-30 | 2023-08-31 | $0.54 | $162K | +8.0% | +6.1% | +11.6% |
| SENS | SELL | 2021-08-24 | 2021-08-26 | $3.56 | $2.4M | -5.5% | -9.8% | -18.0% |
| SENS | SELL | 2021-05-25 | 2021-05-28 | $1.91 | $564K | +76.6% | +102.0% | +89.3% |
| SENS | SELL | 2021-05-19 | 2021-05-21 | $2.08 | $1K | +2.5% | +61.5% | +58.5% |
| SENS | SELL | 2021-04-09 | 2021-04-13 | $2.25 | $44.4M | -4.8% | -18.6% | +51.0% |
| TNDM | SELL | 2019-08-27 | 2019-08-29 | $70.30 | $42.2M | -15.1% | -20.4% | -6.4% |
| TNDM | SELL | 2019-08-02 | 2019-08-06 | $70.01 | $1.3M | -4.8% | +13.3% | +1.4% |
| TNDM | SELL | 2019-07-11 | 2019-07-15 | $70.08 | $1.9M | -5.5% | -7.3% | -12.1% |
| TNDM | SELL | 2019-06-13 | 2019-06-17 | $70.07 | $5.0M | -2.0% | -2.0% | -6.0% |
| SENS | SELL | 2018-06-13 | 2018-06-15 | $4.02 | $7.8M | +0.0% | -5.0% | +6.4% |
| SENS | SELL | 2018-06-11 | 2018-06-13 | $3.88 | $4.0M | +16.8% | +3.3% | +13.0% |
| TNDM | BUY | 2018-02-09 | 2018-02-13 | $2.00 | $2.0M | +20.2% | +49.6% | +332.0% |
| SENS | BUY | 2016-03-23 | 2016-03-23 | $2.85 | $7.0M | +13.3% | +22.4% | +35.0% |
| TRIV | BUY | 2014-04-22 | 2014-04-24 | $12.00 | $10.0M | 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.