| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
EVP and CFO
1 company
William D Lambert last filed a Form 4 in September 2025, as EVP and CFO at MTDR. William D Lambert's net worth is not public. Form 4 filings only show shares in the companies where this person was an insider, as of the last filing.
At the last filing, the largest reported position was 650 shares of MTDR. Net of sales, the MTDR filings show accumulation of 150 shares.
William D Lambert has 1 Form 4 filing on record in September 2025, as EVP and CFO at Matador Resources (MTDR), 2025.
The 1 reported transaction was 1 open-market purchase.
Counted by filing, the open-market trades come to 1 purchase worth about $7K and no sales.
The only open-market purchase was 150 shares of MTDR at an average $48.04 on September 12, 2025, about $7K. Twelve months later MTDR was up 28%.
Shares as reported in the last Form 4 for each company; the most recent is from September 2025. Values use today's prices. Any trades after the last filing were not reported, so current holdings may differ.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 12, 2025 | MTDR Matador Resources Co | EVP and CFO | Buy | 150 | $48.04 | $7,206.00 | +30.0% | -5.8% | +28.1% |