Carlin G. Conner
CIK 1523424 · President and CEO · last filed 2025-11-05
Carlin G. Conner is a President and CEO who has filed 26 SEC Form 4 insider transactions across 4 companies since 2011. The most recent filing, for MTRX, was dated Nov 5, 2025. Across all open-market trades the lifetime net is +$609.7K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $11.6M across reported positions. 17 SEC filings were submitted jointly with SemGroup Corp.
"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.
SEMG 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 1100
TULSA, OK 74103
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MTRX | Director | 55,219 | $9.67 | $534.0K | $0 | 6 | 2025-11-05 |
| SEMG | President and CEO | 366,514 | $27.87 | $10.21M | $351.7K | 14 | 2019-12-05 |
| Rose Rock Midstream, L.P. (RRMS) Delisted | President and CEO of GP | 0 | — | — | $0 | 5 | 2016-09-30 |
| OILT | President, CEO and Chairman | 24,000 | $35.08 | $841.9K | $258.0K | 1 | 2011-07-21 |
Recent Filings
26 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-11-05 | MTRX | Grant (A) | +7,986 | $0 | EDGAR |
| 2024-11-06 | MTRX | Grant (A) | +8,290 | $0 | EDGAR |
| 2023-11-14 | MTRX | Grant (A) | +7,991 | $0 | EDGAR |
| 2022-12-07 | MTRX | Grant (A) | +11,571 | $0 | EDGAR |
| 2021-11-03 | MTRX | Grant (A) | +9,117 | $0 | EDGAR |
| 2020-11-05 | MTRX | Grant (A) | +10,264 | $0 | EDGAR |
| 2019-12-05 | SEMG | Mixed | −251,473 | -$768.4K | EDGAR |
| 2019-04-03 | SEMG | Tax (F) | −2,420 | -$35.8K | EDGAR |
| 2019-03-05 | SEMG | Mixed | +44,825 | -$59.4K | EDGAR |
| 2018-04-03 | SEMG | Tax (F) | −3,259 | -$69.7K | 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.