Mark Okey Decker Jr
CIK 1681625 · CEO and President · last filed 2026-08-31
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
GMRE price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
GREAT FALLS, VA 22066
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| XRN | CEO and President | 71,728 | $27.17 | $1.95M | $723.5K | 6 | 2026-08-31 |
| Chiron Real Estate Inc. (GMRE) Delisted | CEO and President | 58,178 | $35.98 | $2.09M | $1.91M | 4 | 2025-12-08 |
| PINE | Director | 25,558 | $16.77 | $428.6K | $126.9K | 29 | 2024-10-02 |
| CENTERSPACE (IRET) Delisted | Former President, CEO and CIO | 54,271 | $21.29 | $1.16M | $111.4K | 15 | 2023-05-08 |
| CSR | President, CEO and CIO | 27,156 | $57.51 | $1.56M | $815.5K | 29 | 2020-09-24 |
Recent Filings · Page 7 of 9
83 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-08-12 | CSR | Mixed | +609 | -$16.1K | EDGAR |
| 2019-08-12 | CSR | Tax (F) | −313 | -$21.5K | EDGAR |
| 2019-07-23 | CSR | Mixed | +609 | -$269 | EDGAR |
| 2019-05-02 | CSR | Grant (A) | +1,406 | $0 | EDGAR |
| 2019-03-12 | CSR | Grant (A) | — | $0 | EDGAR |
| 2018-12-20 | CSR | Mixed | +5,000 | $26.0K | EDGAR |
| 2018-07-24 | CSR | Mixed | +650 | $3.5K | EDGAR |
| 2018-07-17 | CSR | Buy (P) | +1,200 | $6.5K | EDGAR |
| 2018-07-05 | CSR | Buy (P) | +9,000 | $49.9K | EDGAR |
| 2018-05-02 | CSR | Buy (P) | +800 | $4.3K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.