Edwin A. Poston
CIK 1888753 · last filed 2026-05-06
Edwin A. Poston is a corporate insider who has filed 23 SEC Form 4 insider transactions across 2 companies since 2022. The most recent filing, for RPC, was dated May 6, 2026. Across all open-market trades the lifetime net is −$6.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $20.6M across reported positions. 9 SEC filings were submitted jointly with Mel Williams.
"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.
PX 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
4514 COLE AVENUE, SUITE 1600
DALLAS, TX 75205
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RPC | Director | 2,351,904 | $8.74 | $20.57M | $0 | 2 | 2026-05-06 |
| Ridgepost Capital, Inc. (PX) Delisted | Director | 176,526 | $10.54 | $1.86M | -$6.76M | 18 | 2025-12-11 |
Recent Filings
23 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-06 | RPC | Other (J) | — | $0 | EDGAR |
| 2026-02-18 | RPC | Mixed | +5,146 | $0 | EDGAR |
| 2025-12-11 | Ridgepost Capital, Inc. (PX) Delisted | Conv (C) | +116,024 | $0 | EDGAR |
| 2025-11-24 | Ridgepost Capital, Inc. (PX) Delisted | Mixed | — | -$166.2K | EDGAR |
| 2025-09-25 | Ridgepost Capital, Inc. (PX) Delisted | Sell (S) | −25,000 | -$301.8K | EDGAR |
| 2025-09-23 | RPC | Notice (144) | −250,000 | -$2.97M | EDGAR |
| 2025-09-22 | Ridgepost Capital, Inc. (PX) Delisted | Sell (S) | −107,976 | -$1.31M | EDGAR |
| 2025-09-15 | Ridgepost Capital, Inc. (PX) Delisted | Sell (S) | −30,000 | -$375.6K | EDGAR |
| 2025-09-02 | Ridgepost Capital, Inc. (PX) Delisted | Sell (S) | −15,000 | -$188.6K | EDGAR |
| 2025-08-26 | Ridgepost Capital, Inc. (PX) Delisted | Sell (S) | −97,024 | -$1.23M | 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.