Stephen Cotton is CEO at Aqua Metals, Inc. (AQMS). They have made 25 open-market trades across 1 company since 2015, most recently 2026-10-13.
CIK 0001649322
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.
12 open-market purchases totalling $314K since 2015, against 13 sales. Across 12 scored buys the stock is down 10.6% at ninety days, and 15.7 points behind the S&P over the same stretch.
12 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| AQMS | 351,742 | $591K |
Shares reported on the most recent Form 4, priced at the 2026-10-15 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 17% | 33% | 17% |
| Avg Move | -2.5% | -1.6% | -10.6% |
| Alpha | -2.4% | -4.8% | -15.7% |
| Scored | 12 | 12 | 12 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AQMS | BUY | 2024-05-14 | 2024-05-16 | $0.39 | $98K | -11.1% | -17.8% | -55.6% |
| AQMS | SELL | 2022-07-08 | 2022-07-08 | $0.77 | $437K | +8.0% | +30.9% | +5.5% |
| AQMS | SELL | 2022-03-24 | 2022-03-28 | $1.41 | $284K | -7.1% | -28.7% | -34.3% |
| AQMS | SELL | 2022-01-05 | 2022-01-06 | $1.27 | $316K | -15.6% | -12.2% | +20.9% |
| AQMS | SELL | 2021-07-02 | 2021-07-06 | $2.71 | $1.0M | -13.3% | -17.8% | -25.6% |
| AQMS | SELL | 2021-03-24 | 2021-03-26 | $3.88 | $680K | -5.6% | -21.5% | -16.4% |
| AQMS | SELL | 2021-03-01 | 2021-03-03 | $5.05 | $2.3M | +16.1% | -7.0% | -21.3% |
| AQMS | SELL | 2021-01-04 | 2021-01-05 | $3.36 | $470K | +6.9% | +65.8% | +12.4% |
| AQMS | BUY | 2020-08-07 | 2020-08-10 | $1.04 | $750 | -1.0% | -9.5% | -15.6% |
| AQMS | BUY | 2020-07-24 | 2020-07-27 | $1.12 | $750 | -3.6% | -10.8% | -13.1% |
| AQMS | BUY | 2020-07-10 | 2020-07-14 | $1.11 | $750 | +0.0% | -5.4% | -16.8% |
| AQMS | SELL | 2020-07-02 | 2020-07-07 | $1.15 | $390K | -7.4% | -11.5% | -23.0% |
| AQMS | BUY | 2020-06-26 | 2020-06-29 | $1.10 | $750 | -7.5% | -13.3% | -22.5% |
| AQMS | BUY | 2020-06-12 | 2020-06-15 | $0.86 | $750 | +23.2% | +17.9% | -1.6% |
| AQMS | BUY | 2020-06-08 | 2020-06-08 | $0.87 | $44K | -6.2% | -0.9% | -10.6% |
| AQMS | SELL | 2020-03-23 | 2020-03-25 | $0.39 | $5K | -8.9% | +35.5% | +180.3% |
| AQMS | SELL | 2020-01-07 | 2020-01-09 | $0.80 | $4K | -27.8% | -20.6% | -55.9% |
| AQMS | SELL | 2020-01-03 | 2020-01-06 | $0.71 | $280K | -8.7% | -1.9% | -51.2% |
| AQMS | BUY | 2019-06-14 | 2019-06-14 | $1.51 | $15K | -0.6% | +13.6% | +18.5% |
| AQMS | BUY | 2019-01-17 | 2019-01-22 | $1.90 | $29K | +13.7% | +15.1% | +23.3% |
| AQMS | BUY | 2018-08-13 | 2018-08-13 | $2.49 | $16K | -9.3% | +11.7% | -0.8% |
| AQMS | BUY | 2018-06-18 | 2018-06-18 | $2.85 | $86K | -22.2% | -17.0% | -30.7% |
| AQMS | SELL | 2017-04-19 | 2017-04-20 | $17.26 | $152K | +6.9% | -32.5% | -23.4% |
| AQMS | SELL | 2017-03-22 | 2017-03-24 | $17.84 | $158K | +4.2% | -8.4% | -33.0% |
| AQMS | BUY | 2015-08-21 | 2015-08-25 | $4.84 | $24K | -5.5% | -2.3% | -2.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.