Charles S. Leykum
CIK 1708727 · Chairman and CEO · last filed 2026-09-15
Charles S. Leykum is a Chairman and CEO who has filed 21 SEC Form 4 insider transactions across 3 companies since 2017. The most recent filing, for TLNC, was dated Sep 15, 2026. Across all open-market trades the lifetime net is +$4.9M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $6.8M across reported positions. 10 SEC filings were submitted jointly with CSL Energy Opportunity GP II, LLC.
"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.
RNGR 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
SUITE 3850
HOUSTON, TX 77002
Holdings By Company
Holdings By Holder
| Symbol | Holder | Shares | Share of Total | Reported |
|---|---|---|---|---|
| TLNCU | Sponsor and indirectly by Charles Leykum Seefootnote |
530,000 | 100.0% | 2025-09-10 |
| Total | 530,000 | |||
| RNGR | Direct | 106,005 | 98.4% | 2025-05-30 |
| See Footnotes | 1,679 | 1.6% | 2025-05-30 | |
| Total | 107,684 | |||
| No longer reported | ||||
| CSL Energy Opportunity GP I See Footnote |
1,816 | — | last 2024-03-28 | |
Recent Filings
21 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-15 | TLNC | Other (J) | — | $0 | EDGAR |
| 2025-09-16 | TLNCU | Other (J) | — | $0 | EDGAR |
| 2025-09-10 | TLNCU | Buy (P) | +530,000 | $0 | EDGAR |
| 2025-05-30 | RNGR | Other (J) | −3,471,957 | $0 | EDGAR |
| 2024-11-12 | RNGR | Mixed | +6,262 | $0 | EDGAR |
| 2024-08-05 | RNGR | Disp (D) | −2,245 | -$28.1K | EDGAR |
| 2024-07-29 | RNGR | Grant (A) | — | $0 | EDGAR |
| 2024-03-28 | RNGR | Sell (S) | −169,000 | -$1.88M | EDGAR |
| 2024-02-14 | RNGR | — | — | $0 | EDGAR |
| 2024-02-14 | RNGR | — | — | $0 | 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, and an amended or cancelled notice is not listed. 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. Someone who is no longer an officer or director (or never was) files no Form 4, so for them a sale shows up only on a later notice, which lists the seller's sales from the 3 months before it. "No sale on file" means neither record shows one; a dash in Net $ means the value filed on the notice doesn't fit the stock's price (likely a typo).