Transactions
8
Insider / Matador Resources Co
Elsener William Thomas
EVP, Reservoir Engineering at Matador Resources Co
- Company
- Matador Resources Co
- Ticker
- MTDR
- First filing on record
- November 4, 2025
- Latest trade on record
- August 10, 2026
- SEC filings
- EDGAR ↗
Elsener William Thomas, EVP, Reservoir Engineering at Matador Resources Co, has disclosed 8 transactions in MTDR since November 4, 2025: 2 purchases (2 open-market buys) and 2 sales, worth about $182K at the reported prices. The latest was filed August 12, 2026, 2 days after the trade.
Open-market buys
2
Sales
2
Avg. disclosure lag
2.6d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Elsener William Thomas made 2 purchases worth $67K and 2 sales worth $115K, plus 4 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
Elsener William Thomas has traded 1 stock on record; the largest by dollars is MTDR.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 4 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 2 | 30,480 | — |
| F | Shares withheld for tax | 2 | 2,604 | $115K |
| M | Option exercise or conversion | 2 | 11,000 | — |
| P | Open-market purchase | 2 | 1,450 | $67K |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 7 | 1 · $43K | 2 · $115K |
| 2025 | 1 | 1 · $24K | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| MTDR | Buy P | August 10, 2026 | August 12, 2026 | 2d | 850 | $51 | $43K | Form 4 ↗ | ||
| MTDR | Other A | February 17, 2026 | February 18, 2026 | 1d | 27,000 | — | — | derivative | Form 4 ↗ | |
| MTDR | Option / conversion M | February 14, 2026 | February 18, 2026 | 4d | 6,000 | — | — | derivative | Form 4 ↗ | |
| MTDR | Option / conversion M | February 14, 2026 | February 18, 2026 | 4d | 5,000 | — | — | derivative | Form 4 ↗ | |
| MTDR | Sell F | February 16, 2026 | February 18, 2026 | 2d | 1,050 | $48 | $50K | Form 4 ↗ | ||
| MTDR | Sell F | January 6, 2026 | January 8, 2026 | 2d | 1,554 | $41 | $64K | Form 4 ↗ | ||
| MTDR | Other A | January 6, 2026 | January 8, 2026 | 2d | 3,480 | — | — | Form 4 ↗ | ||
| MTDR | Buy P | October 31, 2025 | November 4, 2025 | 4d | 600 | $40 | $24K | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| August 12, 2026 | Form 4 | 0001934692-26-000004 | 1 | published | EDGAR ↗ |
| February 18, 2026 | Form 4 | 0001628280-26-009326 | 4 | published | EDGAR ↗ |
| January 8, 2026 | Form 4 | 0001628280-26-001426 | 2 | published | EDGAR ↗ |
| November 4, 2025 | Form 4 | 0001934692-25-000005 | 1 | published | EDGAR ↗ |
Other insiders at Matador Resources Co
- Foran Joseph Wm Chairman and CEO 21 rows
- Appel Shelley F Director 9 rows
- Calvert Christopher P EVP and COO 9 rows
- Stetson Glenn W EVP-Production 9 rows
- Macalik Robert T EVP, Chief Financial Officer 8 rows
- Singleton Van H II CoPresident-Land, A&D,Planning 8 rows
- Erman Bryan A Co-President,CLO & Head of M&A 7 rows
- Colodney Benjamin T SVP & Chief Accounting Officer 5 rows
- Krug George G EVP - Mktg and Midstream 5 rows
- Baty Robert Gaines Director 3 rows
Everyone on file, with contracts and lobbying under the company's name: Matador Resources Co.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 4 | 8 | November 4, 2025 | August 12, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.