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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 $20.0M 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.

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Disclosed Exposure

$19.99M

Companies

2

Total Filings

23

Lifetime Open-Market Net

-$6.76M

Filer Profile

Reported Address
C/O P10, INC.
4514 COLE AVENUE, SUITE 1600
DALLAS, TX 75205
Related Filers
Mel Williams — 9 joint filings, latest 2025-03-21
TrueBridge Colonial Fund, u/a dated 11/15/2015 — 6 joint filings, latest 2024-03-12
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
RPC Director 2,351,904 $8.50 $19.99M $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
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
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
Showing 1–10 of 23
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.