Warren F. Kruger is CEO & President at GREYSTONE LOGISTICS, INC. (GLGI). They have made 89 open-market trades across 1 company since 2006, most recently 2025-12-22.
CIK 0001261715
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.
89 open-market purchases totalling $825K since 2006, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GLGI | 8,884,354 | — |
Shares reported on the most recent Form 4, priced at the 2025-12-22 close. 1 holding could not be priced and is excluded from the total.
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 |
|---|---|---|---|---|---|---|---|---|
| GLGI | BUY | 2025-12-22 | 2025-12-22 | $0.58 | $10K | N/A | N/A | N/A |
| GLGI | BUY | 2025-11-11 | 2025-11-20 | $0.71 | $4K | N/A | N/A | N/A |
| GLGI | BUY | 2023-02-01 | 2023-02-02 | $0.46 | $2K | N/A | N/A | N/A |
| GLGI | BUY | 2021-10-14 | 2021-10-18 | $1.12 | $504 | N/A | N/A | N/A |
| GLGI | BUY | 2020-10-13 | 2020-10-15 | $0.89 | $4K | N/A | N/A | N/A |
| GLGI | BUY | 2020-09-04 | 2020-09-08 | $1.02 | $1K | N/A | N/A | N/A |
| GLGI | BUY | 2020-01-17 | 2020-02-04 | $0.45 | $5K | N/A | N/A | N/A |
| GLGI | BUY | 2019-09-13 | 2019-09-17 | $0.53 | $795 | N/A | N/A | N/A |
| GLGI | BUY | 2019-09-12 | 2019-09-12 | $0.54 | $1K | N/A | N/A | N/A |
| GLGI | BUY | 2019-02-11 | 2019-02-15 | $0.59 | $57K | N/A | N/A | N/A |
| GLGI | BUY | 2018-11-02 | 2019-02-15 | $0.50 | $26K | N/A | N/A | N/A |
| GLGI | BUY | 2018-11-02 | 2018-11-05 | $0.50 | $48K | N/A | N/A | N/A |
| GLGI | BUY | 2017-05-31 | 2017-06-06 | $0.30 | $450 | N/A | N/A | N/A |
| GLGI | BUY | 2017-05-18 | 2017-05-19 | $0.30 | $600 | N/A | N/A | N/A |
| GLGI | BUY | 2017-05-08 | 2017-05-11 | $0.30 | $750 | N/A | N/A | N/A |
| GLGI | BUY | 2017-05-03 | 2017-05-05 | $0.25 | $3K | N/A | N/A | N/A |
| GLGI | BUY | 2017-04-25 | 2017-04-28 | $0.30 | $750 | N/A | N/A | N/A |
| GLGI | BUY | 2017-04-19 | 2017-04-19 | $0.28 | $990 | N/A | N/A | N/A |
| GLGI | BUY | 2017-04-19 | 2017-04-20 | $0.28 | $1K | N/A | N/A | N/A |
| GLGI | BUY | 2017-04-18 | 2017-04-19 | $0.30 | $5K | N/A | N/A | N/A |
| GLGI | BUY | 2017-04-17 | 2017-04-19 | $0.31 | $9K | N/A | N/A | N/A |
| GLGI | BUY | 2017-01-20 | 2017-01-23 | $0.24 | $1K | N/A | N/A | N/A |
| GLGI | BUY | 2016-10-19 | 2017-01-30 | $0.24 | $1K | N/A | N/A | N/A |
| GLGI | BUY | 2016-10-19 | 2016-10-21 | $0.24 | $2K | N/A | N/A | N/A |
| GLGI | BUY | 2016-09-02 | 2017-01-30 | $0.24 | $600 | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.