Natural Gas Services Group, Inc.
US ˙ NYSE ˙ US63886Q1094

SecurityNGS / Natural Gas Services Group, Inc.
InstitutionInvesco Ltd.
Latest Disclosed Ownership51,766 shares
Latest Disclosed Value $ 1,953,649
Invesco Ltd. reports 51.09% decrease in ownership of NGS / Natural Gas Services Group, Inc.

On May 12, 2026 - Invesco Ltd. filed a 13F-HR form disclosing ownership of 51,766 shares of Natural Gas Services Group, Inc. (US:NGS) valued at $1,953,649 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 19, 2026 disclosing 105,842 shares of Natural Gas Services Group, Inc.. This represents a change in shares of -51.09% during the quarter. The current value of the position is $2,141,042 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)
2026-05-12 2026-03-31 13F NATURAL GAS SVCS GROUP COM 63886Q109 51,766 -54,076 -51.09 1,954 -45.16 0.0003
2026-02-19 2025-12-31 13F NATURAL GAS SVCS GROUP COM 63886Q109 105,842 85,682 425.01 3,562 531.38 0.0005
2025-11-13 2025-09-30 13F NATURAL GAS SVCS GROUP COM 63886Q109 20,160 -92,353 -82.08 564 -80.57 0.0001
2025-08-13 2025-06-30 13F NATURAL GAS SVCS GROUP COM 63886Q109 112,513 -24,235 -17.72 2,904 -3.36 0.0005
2025-05-12 2025-03-31 13F NATURAL GAS SVCS GROUP COM 63886Q109 136,748 107,679 370.43 3,004 285.62 0.0006
2025-02-13 2024-12-31 13F NATURAL GAS SVCS GROUP COM 63886Q109 29,069 176 0.61 779 41.12 0.0001
2024-11-12 2024-09-30 13F NATURAL GAS SVCS GROUP COM 63886Q109 28,893 -9,694 -25.12 552 -28.87 0.0001
2024-08-13 2024-06-30 13F NATURAL GAS SVCS GROUP COM 63886Q109 38,587 14,862 62.64 776 68.70 0.0002
2024-05-14 2024-03-31 13F NATURAL GAS SVCS GROUP COM 63886Q109 23,725 23,725 461 0.0001
2021-05-17 2021-03-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 0 -34,417 -100.00 0 -100.00
2021-02-16 2020-12-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 34,417 -1,494 -4.16 326 7.59 0.0001
2020-11-16 2020-09-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 35,911 -1,184 -3.19 303 30.04 0.0001
2020-08-14 2020-06-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 37,095 -5,338 -12.58 233 23.28 0.0001
2020-05-15 2020-03-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 42,433 42,433 189 0.0001
2019-05-15 2019-03-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 0 -27,024 -100.00 0 -100.00
2019-02-14 2018-12-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 27,024 2,699 11.10 444 -13.45 0.0002
2018-11-14 2018-09-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 24,325 -361 -1.46 513 -12.01 0.0002
2018-08-14 2018-06-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 24,686 4,236 20.71 583 19.47 0.0002
2018-05-15 2018-03-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 20,450 -318 -1.53 488 -10.29 0.0002
2018-02-14 2017-12-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 20,768 670 3.33 544 -4.73 0.0002
2017-11-14 2017-09-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 20,098 642 3.30 571 18.22 0.0002
2017-08-14 2017-06-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 19,456 510 2.69 483 -2.23 0.0002
2017-05-15 2017-03-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 18,946 -2,534 -11.80 494 -28.51 0.0002
2017-02-14 2016-12-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 21,480 1,189 5.86 691 38.48 0.0002
2016-11-14 2016-09-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 20,291 937 4.84 499 12.64 0.0002
2016-08-15 2016-06-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 19,354 1,628 9.18 443 15.67 0.0002
2016-05-16 2016-03-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 17,726 -14 -0.08 383 -3.28 0.0002
2016-02-16 2015-12-31 13F NATURAL GAS SERVICES GROUP COM 63886Q109 17,740 1,502 9.25 396 26.52 0.0002
2015-11-16 2015-09-30 13F NATURAL GAS SERVICES GROUP COM 63886Q109 16,238 540 3.44 313 -12.57 0.0001
2015-08-14 2015-06-30 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 15,698 1,266 8.77 358 29.24 0.0001
2015-05-15 2015-03-31 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 14,432 3,403 30.86 277 9.06 0.0001
2015-02-13 2014-12-31 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 11,029 695 6.73 254 2.01 0.0001
2014-11-14 2014-09-30 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 10,334 -1,955 -15.91 249 -38.67 0.0001
2014-08-14 2014-06-30 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 12,289 -804 -6.14 406 2.78 0.0002
2014-05-15 2014-03-31 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 13,093 -2,521 -16.15 395 -8.35 0.0002
2014-02-13 2013-12-31 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 15,614 -2,941 -15.85 431 -13.28 0.0002
2013-11-13 2013-09-30 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 18,555 6,314 51.58 497 73.17 0.0002
2013-08-14 2013-06-30 13F NATURAL GAS SERVICES GROUP COMMON 63886Q109 12,241 12,241 287 0.0001
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.