Matador Resources Company
US ˙ NYSE ˙ US5764852050

SecurityMTDR / Matador Resources Company
InstitutionMadison Asset Management, LLC
Latest Disclosed Ownership280,699 shares
Latest Disclosed Value $ 17,734,563
Madison Asset Management, LLC reports 27.01% increase in ownership of MTDR / Matador Resources Company

On May 7, 2026 - Madison Asset Management, LLC filed a 13F-HR form disclosing ownership of 280,699 shares of Matador Resources Company (US:MTDR) valued at $17,734,563 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 221,000 shares of Matador Resources Company. This represents a change in shares of 27.01% during the quarter. The current value of the position is $15,037,045 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F Matador Resources COM 576485205 280,699 59,699 27.01 17,735 89.08 0.2199
2026-02-04 2025-12-31 13F Matador Resources COM 576485205 221,000 0 0.00 9,379 -5.54 0.1078
2025-11-06 2025-09-30 13F Matador Resources COM 576485205 221,000 0 0.00 9,930 -5.85 0.1095
2025-08-11 2025-06-30 13F Matador Resources COM 576485205 221,000 0 0.00 10,546 -6.59 0.1139
2025-05-06 2025-03-31 13F Matador Resources COM 576485205 221,000 0 0.00 11,291 -9.19 0.1258
2025-02-10 2024-12-31 13F Matador Resources COM 576485205 221,000 25,000 12.76 12,433 28.36 0.1402
2024-11-12 2024-09-30 13F Matador Resources COM 576485205 196,000 38,000 24.05 9,686 2.87 0.1089
2024-08-09 2024-06-30 13F Matador Resources COM 576485205 158,000 44,000 38.60 9,417 23.72 0.1165
2024-05-09 2024-03-31 13F Matador Resources COM 576485205 114,000 40,000 54.05 7,612 80.91 0.0936
2024-02-12 2023-12-31 13F Matador Resources COM 576485205 74,000 74,000 4,208 0.0570
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.