Figures computed from official regulatory filings — .
Ownershipinsiders 0% · institutions 0%
In USD · as of Oct 19, 2026
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MainStreetChamber Holdings, Inc. focuses on acquiring a portfolio of small and micro businesses. It develops solutions for organization ranging from startup to established companies. The company formerly known as Walker Lane Exploration, Inc. and changed its name to MainStreetChamber Holdings, Inc. in 2022. MainStreetChamber Holdings, Inc. was incorporated in 2007 and is based in Las Vegas, Nevada. MainStreetChamber Holdings, Inc. is a subsidiary of SJE Mining LLC.
Market information source · Oct 19, 2026
Periods recorded in the consulted sources. These do not certify the legal dates of name changes.
SEC company identity · Oct 19, 2026
Open-market timeline · full history
7 buys8 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| andrews Huntley barr | Buy | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | conv 25 |
| SEC |
| CALDWELL LEON | Buy | n/a (No price was disclosed in the filing) | conv 82First in 12mo | SEC |
| Jones Steven Kendall | Sell | $1K | SEC |
| Jones Steven Kendall | Sell | $1K | SEC |
| Jones Steven Kendall | Sell | $1K | SEC |
| Jones Steven Kendall | Other | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Jones Steven Kendall | Sell | $1K | SEC |
| Stevenson Eric | Sell | $200K | SEC |
| Stevenson Eric | Sell | $4K | SEC |
| SJE Mining LLC | Sell | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Simon Keith Adrian | Sell | $760 | SEC |
| Simon Keith Adrian | Buy | $600 | conv 73First in 12mo | SEC |
| Mancuso Thomastrack record | Buy | $3.9K | conv 43Cluster | SEC |
| Mancuso Thomastrack record | Buy | $5.1K | conv 36Cluster | SEC |
| Jones Steven Kendall | Buy | $3K | conv 49ClusterFirst in 12mo | SEC |
| Moss Trevor A | Buy | $500 | conv 64First in 12mo | SEC |