John B Williamson III
CIK 1238836 · Chairman · last filed 2026-09-25
John B Williamson III is a Chairman who has filed 268 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing shows the insider bought $56.6K of RGCO on Sep 25, 2026. Across all open-market trades the lifetime net is +$573.4K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $5.7M across reported positions. 144 SEC filings were submitted jointly with RGC RESOURCES INC.
"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.
RGCO 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
ROANOKE, VA 24030
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RGCO | Director | 181,503 | $23.18 | $4.21M | $555.0K | 145 | 2026-09-25 |
| OCC | Director | 164,119 | $9.28 | $1.52M | $18.4K | 14 | 2021-06-25 |
| LUNA INNOVATIONS INC (LUNA) Delisted | Director | 278,176 | $0.89 | $247.3K | $0 | 48 | 2020-04-02 |
| OPTICAL CABLE CORP (OCCF) Delisted | Director | 40,853 | — | — | $0 | 7 | 2010-05-04 |
Recent Filings
268 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-25 | RGCO | Buy (P) | +2,703 | $56.6K | EDGAR |
| 2026-09-16 | RGCO | Buy (P) | +112 | $2.4K | EDGAR |
| 2026-09-15 | RGCO | Buy (P) | +500 | $10.7K | EDGAR |
| 2026-09-11 | RGCO | Buy (P) | +1,309 | $27.9K | EDGAR |
| 2026-09-02 | RGCO | Buy (P) | +1,000 | $21.3K | EDGAR |
| 2025-11-05 | RGCO | Grant (A) | +290 | $6.1K | EDGAR |
| 2025-10-03 | RGCO | Grant (A) | +269 | $6.1K | EDGAR |
| 2025-09-03 | RGCO | Grant (A) | +274 | $6.1K | EDGAR |
| 2025-08-05 | RGCO | Grant (A) | +308 | $6.1K | EDGAR |
| 2025-07-03 | RGCO | Grant (A) | +265 | $6.1K | 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.