David Joseph Gaffin is CLO & VP at Alkermes plc. (ALKS). They have made 8 open-market trades across 1 company since 2016, most recently 2026-10-02.
CIK 0001675905
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 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ALKS | 221,388 | $9.1M |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close.
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 |
|---|---|---|---|---|---|---|---|---|
| ALKS | SELL · 10b5-1 | 2026-10-02 | 2026-10-02 | $41.03 | $83K | -7.0% | — | — |
| ALKS | SELL · 10b5-1 | 2026-08-03 | 2026-08-03 | $48.58 | $99K | -0.4% | -3.9% | — |
| ALKS | SELL · 10b5-1 | 2026-07-06 | 2026-07-06 | $54.03 | $110K | -6.4% | -10.6% | -23.0% |
| ALKS | SELL · 10b5-1 | 2026-06-04 | 2026-06-04 | $43.05 | $88K | +0.9% | +26.2% | +9.3% |
| ALKS | SELL · 10b5-1 | 2026-05-04 | 2026-05-04 | $33.20 | $68K | +8.5% | +20.9% | +40.1% |
| ALKS | SELL · 10b5-1 | 2026-04-06 | 2026-04-06 | $34.57 | $70K | -0.3% | +4.3% | +62.8% |
| ALKS | SELL | 2026-03-02 | 2026-03-04 | $29.53 | $120K | -3.4% | +17.5% | +42.5% |
| ALKS | SELL | 2021-07-29 | 2021-07-30 | $26.00 | $364K | +9.2% | +19.9% | +10.5% |
| ALKS | SELL | 2021-06-10 | 2021-06-11 | $25.00 | $338K | -5.1% | -2.2% | +18.5% |
| ALKS | SELL | 2021-06-07 | 2021-06-08 | $24.00 | $324K | -0.7% | +3.4% | +20.6% |
| ALKS | SELL | 2021-05-14 | 2021-05-14 | $22.23 | $100K | +0.2% | +11.1% | +30.1% |
| ALKS | SELL | 2019-05-09 | 2019-05-13 | $26.85 | $205K | -4.6% | -10.1% | -14.4% |
| ALKS | SELL | 2017-01-03 | 2017-01-04 | $55.40 | $139K | -8.9% | -8.3% | -1.9% |
| ALKS | SELL | 2016-09-06 | 2016-09-07 | $45.92 | $219K | +4.5% | -3.9% | +22.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.