Mihael Hristos Polymeropoulos is CEO & President at Vanda Pharmaceuticals Inc. (VNDA). They have made 46 open-market trades across 1 company since 2006, most recently 2026-03-02.
CIK 0001355537
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.
14 open-market purchases totalling $933K since 2008, against 32 sales. Across 14 scored buys the stock is down 4.4% at ninety days, and 6.7 points behind the S&P over the same stretch.
14 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| VNDA | 2,704,496 | $10.9M |
Shares reported on the most recent Form 4, priced at the 2026-03-04 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 43% | 29% | 21% |
| Avg Move | +0.4% | -3.1% | -4.4% |
| Alpha | +3.8% | +0.3% | -6.7% |
| Scored | 14 | 14 | 14 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VNDA | SELL | 2026-03-02 | 2026-03-04 | $8.17 | $1.3M | +5.8% | -16.4% | -26.6% |
| VNDA | BUY | 2025-08-07 | 2025-08-08 | $4.15 | $42K | +8.0% | +6.8% | +3.5% |
| VNDA | BUY | 2025-05-21 | 2025-05-21 | $4.40 | $44K | +2.1% | +4.9% | +5.3% |
| VNDA | BUY | 2025-05-16 | 2025-05-19 | $4.22 | $84K | -2.3% | +2.0% | +2.7% |
| VNDA | BUY | 2025-03-06 | 2025-03-06 | $5.02 | $50K | -1.4% | -17.2% | -12.3% |
| VNDA | BUY | 2025-03-05 | 2025-03-05 | $5.02 | $50K | -1.0% | -19.3% | -14.4% |
| VNDA | BUY | 2025-03-03 | 2025-03-04 | $4.71 | $47K | +4.0% | -8.8% | -10.2% |
| VNDA | BUY | 2025-02-28 | 2025-02-28 | $4.76 | $48K | +3.3% | -4.2% | -8.4% |
| VNDA | BUY | 2025-02-27 | 2025-02-27 | $4.76 | $48K | +6.0% | -2.3% | -8.3% |
| VNDA | BUY | 2025-02-26 | 2025-02-26 | $4.77 | $48K | -1.3% | -1.7% | -9.2% |
| VNDA | BUY | 2025-02-25 | 2025-02-25 | $4.46 | $45K | +5.7% | +0.2% | -5.7% |
| VNDA | SELL | 2024-03-04 | 2024-03-06 | $4.19 | $463K | -4.6% | +22.6% | +28.0% |
| VNDA | SELL | 2023-03-02 | 2023-03-06 | $6.24 | $561K | +1.3% | +7.3% | -3.0% |
| VNDA | SELL | 2022-12-05 | 2022-12-07 | $10.61 | $2.0M | -33.1% | -31.1% | -41.7% |
| VNDA | SELL | 2022-03-01 | 2022-03-02 | $11.16 | $828K | -0.8% | +6.1% | -11.8% |
| VNDA | SELL | 2021-11-30 | 2021-12-02 | $16.34 | $2.4M | -3.8% | -0.1% | -32.8% |
| VNDA | SELL | 2021-03-08 | 2021-03-09 | $18.00 | $3.1M | -4.7% | -9.4% | +2.9% |
| VNDA | SELL | 2021-03-01 | 2021-03-03 | $18.38 | $834K | +0.3% | -10.6% | +0.6% |
| VNDA | SELL | 2020-12-11 | 2020-12-15 | $13.05 | $2.8M | -0.9% | +5.8% | +34.4% |
| VNDA | SELL | 2020-03-02 | 2020-03-04 | $10.71 | $334K | -27.2% | -7.5% | +2.5% |
| VNDA | SELL | 2020-01-02 | 2020-01-06 | $16.00 | $151K | -4.5% | -16.7% | -32.2% |
| VNDA | SELL | 2019-12-11 | 2019-12-13 | $16.95 | $4.8M | +1.4% | -10.4% | -38.9% |
| VNDA | SELL | 2019-05-17 | 2019-05-21 | $15.30 | $5.5M | -6.6% | -12.3% | -5.4% |
| VNDA | SELL | 2019-03-01 | 2019-03-04 | $19.47 | $1.6M | -6.1% | -7.9% | -23.8% |
| VNDA | SELL | 2019-01-03 | 2019-01-04 | $26.04 | $116K | +7.3% | -10.0% | -33.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.