No insider purchase over the last 90 days. The latest, by Zhang Peifang, was filed 16 May 2024.
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
FY ended December 2025 · cache
25 of 300 declarations
On May 14, 2024, 8 filers at Aqua Metals, Inc. bought on the same day for EUR 202,852 in total. Across the full history, 49 purchase filings are classed as clustered. Among them, Stephen Cotton, CEO, bought EUR 90,156. The largest purchase dates from 2016, though, on November 16: EUR 186,440 by Stephen R. Clarke, President and CEO; David Kanen, a director, bought EUR 142,248 on December 23, 2022.
Sales are fewer but heavier: 42, worth EUR 9,905,855 (median EUR 182,603), against 62 purchases worth EUR 1,485,367 (median EUR 10,446). Stephen Cotton sold EUR 780,887 on March 2, 2021, and Interstate Batteries, Inc., a holder of more than 10%, EUR 758,481 on May 3, 2017 and EUR 652,522 the day before. Stephen Cotton is the most frequent filer, with 66 filings, ahead of Judd Merrill, CFO (44) and Benjamin S. Taecker (33).
The record has 300 filings published between 2016 and 2026, including 179 grants, at 20 to 40 a year. This US industrial company, listed on Nasdaq, is valued at USD 5.1 million; insiders hold 14.4% of it. Across 59 purchases with a 90-day return, the stored median is -13.1% (past results on record, not a forecast). Thirty-three filings fall within the last twelve months, with no purchase or sale.
Insider filings
Over the last 90 days, 15 filings published between 21 August and 15 October 2026: no open-market purchase or sale filed by an insider. 15 other filings (not open-market purchases or sales: grants, options, plans, sale notices, block transfers).
Summary written automatically from public filings, without human review. General information, identical for every reader: it is not investment advice or a recommendation to buy or sell. Investing involves a risk of capital loss. Generated on 16 October 2026 (UTC)
| Fiscal year end | Revenue | Net income | Diluted EPS | Filing |
|---|---|---|---|---|
| Dec 2024 | n.d. | -24.6 m USD | n.d. | 10-K |
| Dec 2023 | 25,000 USD | -23.9 m USD | n.d. | 10-K |
| Dec 2022 | 4,000 USD | -15.4 m USD | n.d. | 10-K |
| Dec 2021 | 173,000 USD | -18.2 m USD | n.d. | 10-K |
| Dec 2020 | 108,000 USD | -25.8 m USD | n.d. | 10-K |
Amounts in USD, as filed (forms 10-K, 20-F or 40-F). Source: SEC EDGAR.