Matador Resources Company
US ˙ NYSE ˙ US5764852050

SecurityMTDR / Matador Resources Company
InstitutionAmalgamated Bank
Latest Disclosed Ownership52,550 shares
Latest Disclosed Value $ 3,320
Amalgamated Bank reports 4.11% decrease in ownership of MTDR / Matador Resources Company

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 52,550 shares of Matador Resources Company (US:MTDR) valued at $3,320,109 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 54,800 shares of Matador Resources Company. This represents a change in shares of -4.11% during the quarter. The current value of the position is $2,971,177 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)
2026-05-08 2026-03-31 13F MATADOR RESOURCES COM 576485205 52,550 -2,250 -4.11 3 50.00 0.0254
2026-02-05 2025-12-31 13F MATADOR RESOURCES COM 576485205 54,800 1,386 2.59 2 0.00 0.0168
2025-10-29 2025-09-30 13F MATADOR RESOURCES COM 576485205 53,414 183 0.34 2 0.00 0.0171
2025-08-04 2025-06-30 13F MATADOR RESOURCES COM 576485205 53,231 -159 -0.30 3 0.00 0.0196
2025-04-25 2025-03-31 13F MATADOR RESOURCES COM 576485205 53,390 -2,075 -3.74 3 -33.33 0.0233
2025-02-04 2024-12-31 13F MATADOR RESOURCES COM 576485205 55,465 -91 -0.16 3 50.00 0.0256
2024-10-30 2024-09-30 13F MATADOR RESOURCES COM 576485205 55,556 -17,469 -23.92 3 -50.00 0.0226
2024-08-12 2024-06-30 13F MATADOR RESOURCES COM 576485205 73,025 14,850 25.53 4 33.33 0.0371
2024-04-23 2024-03-31 13F MATADOR RESOURCES COM 576485205 58,175 -5,888 -9.19 4 0.00 0.0332
2024-02-06 2023-12-31 13F MATADOR RESOURCES COM 576485205 64,063 -1,919 -2.91 4 0.00 0.0291
2023-11-08 2023-09-30 13F MATADOR RESOURCES COM 576485205 65,982 -2,975 -4.31 4 0.00 0.0334
2023-08-11 2023-06-30 13F MATADOR RESOURCES COM 576485205 68,957 -6,236 -8.29 4 0.00 0.0292
2023-05-02 2023-03-31 13F MATADOR RESOURCES COM 576485205 75,193 -4,239 -5.34 4 -25.00 0.0305
2023-02-10 2022-12-31 13F MATADOR RESOURCES COM 576485205 79,432 1,305 1.67 5 -99.90 0.0406
2022-11-09 2022-09-30 13F MATADOR RESOURCES COM 576485205 78,127 2,295 3.03 3,822 8.18 0.0369
2022-08-15 2022-06-30 13F MATADOR RESOURCES COM 576485205 75,832 21,409 39.34 3,533 22.55 0.0329
2022-08-25 2022-03-31 13F/A-1 MATADOR RESOURCES COM 576485205 54,423 -1,933 -3.43 2,883 38.54 0.0224
2022-06-30 2022-03-31 13F MATADOR RESOURCES COM 576485205 54,423 -1,933 2,883 0.0229
2022-02-15 2021-12-31 13F/A-1 MATADOR RESOURCES COM 576485205 56,356 -1,428 -2.47 2,081 -5.32 0.0154
2022-02-15 2021-12-31 13F MATADOR RESOURCES COM 576485205 56,356 -1,428 2,081 0.0154
2021-10-29 2021-09-30 13F MATADOR RESOURCES COM 576485205 57,784 -1,150 -1.95 2,198 3.58 0.0186
2021-08-16 2021-06-30 13F MATADOR RESOURCES COM 576485205 58,934 49,688 537.40 2,122 877.88 0.0170
2021-05-13 2021-03-31 13F MATADOR RESOURCES COM 576485205 9,246 -1,276 -12.13 217 70.87 0.0081
2021-02-12 2020-12-31 13F MATADOR RESOURCES COM 576485205 10,522 118 1.13 127 47.67 0.0048
2020-10-30 2020-09-30 13F MATADOR RESOURCES COM 576485205 10,404 -77 -0.73 86 -3.37 0.0037
2020-08-10 2020-06-30 13F MATADOR RESOURCES COM 576485205 10,481 -7,742 -42.48 89 97.78 0.0041
2020-05-13 2020-03-31 13F MATADOR RESOURCES COM 576485205 18,223 -405 -2.17 45 -86.57 0.0011
2020-02-13 2019-12-31 13F MATADOR RESOURCES COM 576485205 18,628 1,239 7.13 335 16.72 0.0062
2019-11-13 2019-09-30 13F MATADOR RESOURCES COM 576485205 17,389 -384 -2.16 287 -18.70 0.0060
2019-08-14 2019-06-30 13F MATADOR RESOURCES COM 576485205 17,773 1,029 6.15 353 8.95 0.0082
2019-05-15 2019-03-31 13F MATADOR RESOURCES COM 576485205 16,744 396 2.42 324 27.56 0.0079
2019-02-15 2018-12-31 13F MATADOR RESOURCES COM 576485205 16,348 8,667 112.84 254 0.00 0.0072
2018-11-14 2018-09-30 13F MATADOR RESOURCES COM 576485205 7,681 -8,191 -51.61 254 -46.75 0.0063
2018-07-18 2018-06-30 13F MATADOR RESOURCES COM 576485205 15,872 1,950 14.01 477 14.66 0.0117
2018-05-22 2018-03-31 13F MATADOR RESOURCES COM 576485205 13,922 -241 -1.70 416 -5.67 0.0110
2018-02-13 2017-12-31 13F MATADOR RESOURCES COM 576485205 14,163 1,829 14.83 441 31.64 0.0119
2017-11-09 2017-09-30 13F MATADOR RESOURCES COM 576485205 12,334 -479 -3.74 335 22.26 0.0104
2017-08-10 2017-06-30 13F MATADOR RESOURCES COM 576485205 12,813 2,119 19.81 274 7.87 0.0090
2017-05-12 2017-03-31 13F MATADOR RESOURCES COM 576485205 10,694 506 4.97 254 -3.05 0.0126
2017-02-14 2016-12-31 13F MATADOR RESOURCES COM 576485205 10,188 1,404 15.98 262 22.43 0.0118
2016-11-15 2016-09-30 13F/A-1 MATADOR RESOURCES COM 576485205 8,784 11 0.13 214 6.47 0.0124
2016-08-16 2016-06-30 13F MATADOR RESOURCES COM 576485205 8,773 8,773 201 0.0116
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.