Nathan Kroeker is CEO & President at Spark Energy, Inc. (SPKE). They have made 12 open-market trades across 2 companies since 2014, most recently 2026-07-28.
CIK 0001613718
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 $147K since 2014, against 3 sales. Across 9 scored buys the stock is down 3.9% at ninety days, and 5.3 points behind the S&P over the same stretch.
9 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| SPKE | 191,750 | $2.2M |
| EOSE | 904,471 | $1.6M |
| Total | $3.8M |
Shares reported on the most recent Form 4, priced at the 2026-08-06 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 67% | 100% | 67% |
| Avg Move | -0.5% | +8.3% | -3.9% |
| Alpha | +2.4% | +7.4% | -5.3% |
| Scored | 9 | 9 | 9 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| EOSE | SELL · 10b5-1 | 2026-07-28 | 2026-07-28 | $3.36 | $371K | +24.5% | +2.2% | — |
| EOSE | SELL · 10b5-1 | 2026-07-07 | 2026-07-07 | $4.68 | $371K | -11.0% | -15.1% | -29.3% |
| EOSE | SELL · 10b5-1 | 2026-06-30 | 2026-06-30 | $5.86 | $207K | -24.5% | -37.7% | -46.6% |
| EOSE | SELL | 2026-01-26 | 2026-01-26 | $16.04 | $802K | -30.5% | -31.4% | -55.8% |
| EOSE | SELL · 10b5-1 | 2025-07-29 | 2025-07-29 | $5.94 | $1.2M | +7.5% | +20.3% | +159.6% |
| EOSE | SELL · 10b5-1 | 2025-07-07 | 2025-07-08 | $5.02 | $716K | +21.3% | +35.5% | +186.4% |
| EOSE | SELL | 2025-05-16 | 2025-05-16 | $6.86 | $2.1M | -32.8% | -31.1% | -5.8% |
| EOSE | BUY | 2023-07-28 | 2023-07-28 | $2.15 | $9K | -14.7% | +30.1% | -40.1% |
| SPKE | SELL · 10b5-1 | 2019-02-22 | 2019-02-25 | $9.90 | $50K | -11.7% | -12.4% | +3.1% |
| SPKE | SELL | 2017-05-25 | 2017-05-26 | $43.13 | $1.8M | -1.7% | +1.2% | -18.3% |
| SPKE | BUY | 2016-11-23 | 2016-11-28 | $26.00 | $3K | +4.9% | +18.5% | +4.9% |
| SPKE | BUY | 2016-11-15 | 2016-11-15 | $27.00 | $1K | -4.0% | +8.8% | -5.0% |
| SPKE | BUY | 2016-11-14 | 2016-11-14 | $26.34 | $3K | -5.2% | +7.9% | -3.9% |
| SPKE | BUY | 2015-06-12 | 2015-06-16 | $14.96 | $75K | +2.9% | +1.9% | +1.9% |
| SPKE | BUY | 2014-12-12 | 2014-12-15 | $14.00 | $14K | +2.9% | +1.9% | +1.9% |
| SPKE | BUY | 2014-12-08 | 2014-12-10 | $13.50 | $14K | +2.9% | +1.9% | +1.9% |
| SPKE | BUY | 2014-12-01 | 2014-12-01 | $13.50 | $14K | +2.9% | +1.9% | +1.9% |
| SPKE | BUY | 2014-11-24 | 2014-11-25 | $15.75 | $16K | +2.9% | +1.9% | +1.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.