Stuart A. Tross is CPO & VP at MANNKIND CORP (MNKD). They have made 11 open-market trades across 2 companies since 2015, most recently 2026-07-15.
CIK 0001589641
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.
9 open-market purchases totalling $262K since 2017, against 2 sales. Across 9 scored buys the stock is up 15.3% at ninety days, and 15.4 points ahead of the S&P over the same stretch.
9 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 56% | 33% | 67% |
| Avg Move | +5.9% | +11.5% | +15.3% |
| Alpha | +5.3% | +10.9% | +15.4% |
| Scored | 9 | 9 | 9 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MNKD | SELL · 10b5-1 | 2026-01-08 | 2026-01-09 | $6.33 | $298K | +1.5% | +1.5% | -56.0% |
| MNKD | SELL · 10b5-1 | 2025-09-16 | 2025-09-17 | $5.34 | $251K | -0.2% | +1.3% | +9.4% |
| MNKD | SELL · 10b5-1 | 2024-11-06 | 2024-11-08 | $7.34 | $404K | -7.7% | -10.6% | -24.2% |
| MNKD | SELL · 10b5-1 | 2024-09-03 | 2024-09-04 | $6.26 | $157K | +6.5% | +5.5% | +9.1% |
| MNKD | SELL · 10b5-1 | 2024-08-30 | 2024-08-30 | $6.33 | $506K | -0.3% | +1.1% | +9.0% |
| MNKD | BUY | 2022-01-31 | 2022-02-02 | $3.17 | $13K | +7.7% | -18.0% | -11.5% |
| MNKD | BUY | 2021-07-30 | 2021-08-02 | $2.99 | $13K | +0.2% | +17.6% | +19.6% |
| MNKD | BUY | 2021-01-31 | 2021-02-02 | $1.33 | $7K | +35.3% | -15.5% | +10.5% |
| MNKD | BUY | 2020-07-31 | 2020-08-04 | $1.25 | $6K | -5.3% | -2.9% | +17.6% |
| MNKD | BUY | 2020-01-31 | 2020-02-03 | $0.95 | $5K | -3.9% | -18.3% | -14.4% |
| MNKD | BUY | 2019-07-31 | 2019-07-31 | $0.95 | $5K | -1.7% | -4.3% | +17.4% |
| MNKD | BUY | 2019-01-31 | 2019-01-31 | $1.07 | $5K | +15.1% | +36.5% | +16.7% |
| MNKD | BUY | 2018-08-02 | 2018-08-06 | $1.31 | $7K | +11.9% | +116.8% | +83.2% |
| MNKD | BUY | 2017-12-21 | 2017-12-21 | $2.52 | $201K | -6.3% | -8.2% | -1.5% |
| AMGN | SELL | 2015-04-23 | 2015-04-24 | $169.31 | $510K | -8.5% | -0.4% | -0.4% |
| AMGN | SELL | 2015-03-03 | 2015-03-04 | $157.74 | $696K | -8.5% | -0.4% | -0.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.