NATURAL GAS SERVICES GROUP INC - Common Stock, par value $0.01 per share (NGS) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.01 per share
Symbol
NGS on NYSE
Shares outstanding
12,582,057
Price per share
$33.65
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
9,315,665
Total reported value
$260,734,075
% of total 13F portfolios
0%
Share change
+90,419
Value change
+$2,863,893
Number of holders
111
Price from insider filings
$33.65
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of NATURAL GAS SERVICES GROUP INC - Common Stock, par value $0.01 per share (NGS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VANGUARD GROUP INC 5.1% $21,554,171 640,540 The Vanguard Group 31 Dec 2025
Hoak Public Equities, LP 4.6% -30% $19,348,750 -$8,854,257 575,000 -31% Hoak Public Equities, LP 22 Jan 2026
Mill Road Capital III, L.P. 4.3% -28% $11,663,412 -$4,914,359 530,879 -30% Mill Road Capital III, L.P. 21 Jan 2025

As of 30 Sep 2025, 111 institutional investors reported holding 9,315,665 shares of NATURAL GAS SERVICES GROUP INC - Common Stock, par value $0.01 per share (NGS). This represents 74% of the company’s total 12,582,057 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of NATURAL GAS SERVICES GROUP INC - Common Stock, par value $0.01 per share (NGS) together control 66% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
DIMENSIONAL FUND ADVISORS LP 6.8% 857,397 -0.14% 0.01% $23,998,980
BlackRock, Inc. 6.1% 761,628 -1.4% 0% $21,317,968
AWM Investment Company, Inc. 5.4% 676,652 0% 1.8% $18,939,489
AEGIS FINANCIAL CORP 5.3% 671,112 0% 7.2% $18,784,425
VANGUARD GROUP INC 4.9% 611,653 +1.2% 0% $17,120,168
AMERIPRISE FINANCIAL INC 4% 509,344 -0.07% 0% $14,256,539
Mill Road Capital Management LLC 3.2% 404,745 0% 5.9% $11,328,813
Pacific Ridge Capital Partners, LLC 3.1% 391,287 -2.2% 2.4% $10,952,123
ROYCE & ASSOCIATES LP 2.9% 361,571 +2.5% 0.1% $10,120,372
CANNELL CAPITAL LLC 2.9% 359,021 +8.3% 2.6% $10,048,998
RENAISSANCE TECHNOLOGIES LLC 2.4% 300,942 -11% 0.01% $8,423,367
First Eagle Investment Management, LLC 2.4% 299,739 +0.17% 0.02% $8,389,695
GEODE CAPITAL MANAGEMENT, LLC 1.9% 238,897 +3.5% 0% $6,687,877
BRIDGEWAY CAPITAL MANAGEMENT, LLC 1.9% 233,503 -2.4% 0.14% $6,535,749
AMERICAN CENTURY COMPANIES INC 1.8% 226,658 +48% 0% $6,344,157
Acuitas Investments, LLC 1.7% 216,700 +8.2% 3.9% $6,065,433
STATE STREET CORP 1.6% 196,143 +0.28% 0% $5,490,043
MILLENNIUM MANAGEMENT LLC 1.3% 169,023 +134% 0% $4,730,954
MORGAN STANLEY 1.1% 142,647 +3.7% 0% $3,992,693
RBF Capital, LLC 1.1% 140,000 0% 0.18% $3,918,600
Russell Investments Group, Ltd. 1.1% 137,237 -6.7% 0% $3,841,261
Empowered Funds, LLC 0.76% 96,149 -5.6% 0.03% $2,691,211
Qube Research & Technologies Ltd 0.75% 94,239 +21% 0% $2,637,750
RAYMOND JAMES FINANCIAL INC 0.73% 92,394 +1.3% 0% $2,586,089
NORTHERN TRUST CORP 0.7% 88,324 +3.1% 0% $2,472,190

Institutional Holders of NATURAL GAS SERVICES GROUP INC - Common Stock, par value $0.01 per share (NGS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 3,158,885 $106,304,236 +$833,582 $33.65 57
2025 Q3 9,315,665 $260,734,075 +$2,863,893 $27.99 111
2025 Q2 9,227,443 $238,161,241 +$8,030,773 $25.81 103
2025 Q1 8,932,371 $196,244,119 -$3,170,801 $21.97 108
2024 Q4 9,044,477 $242,276,239 -$342,369 $26.80 97
2024 Q3 9,083,057 $173,609,188 +$2,271,612 $19.11 85
2024 Q2 8,898,782 $179,043,258 +$8,081,470 $20.12 81
2024 Q1 8,500,425 $165,301,949 +$6,794,253 $19.43 62
2023 Q4 10,880 $174,950 +$174,950 $16.08 1
2023 Q3 7,987,223 $116,292,322 +$132,620 $14.56 51
2023 Q2 8,059,707 $79,790,988 -$391,272 $9.90 48
2023 Q1 8,037,821 $82,864,429 -$2,465,946 $10.31 37
2022 Q4 8,259,799 $94,651,597 -$11,049,966 $11.46 43
2022 Q3 9,417,045 $94,547,004 -$5,464,145 $10.04 43
2022 Q2 9,860,017 $108,460,000 -$4,352,859 $11.00 43
2022 Q1 10,159,782 $120,964,000 -$926,711 $11.91 39
2021 Q4 9,971,800 $104,404,668 -$1,760,800 $10.47 35
2021 Q3 10,461,329 $108,585,073 -$4,613,326 $10.38 40
2021 Q2 11,200,376 $115,134,072 +$498,148 $10.28 45
2021 Q1 10,915,797 $103,041,066 -$6,385,475 $9.44 52
2020 Q4 11,702,405 $110,931,066 -$3,452,287 $9.48 58
2020 Q3 11,233,710 $94,976,059 +$1,161,448 $8.45 56
2020 Q2 11,373,173 $71,496,899 -$1,077,151 $6.27 59
2020 Q1 10,637,400 $47,515,853 -$3,375,451 $4.46 66
2019 Q4 11,843,386 $145,048,423 +$943,712 $12.26 72
2019 Q3 12,040,350 $153,924,902 -$843,191 $12.81 74
2019 Q2 11,938,575 $196,839,560 +$3,238,389 $16.50 77
2019 Q1 11,832,476 $204,920,649 -$2,274,280 $17.31 76
2018 Q4 11,943,560 $196,334,754 -$301,731 $16.44 81
2018 Q3 11,855,773 $250,240,916 -$1,079,239 $21.10 86
2018 Q2 11,891,654 $280,629,369 -$200,639 $23.60 90
2018 Q1 11,899,769 $283,810,212 +$2,398,488 $23.85 88
2017 Q4 11,766,622 $308,264,482 +$1,571,635 $26.20 91
2017 Q3 11,678,833 $331,803,948 +$5,380,871 $28.40 91
2017 Q2 11,543,757 $286,863,715 +$4,246,649 $24.85 99
2017 Q1 11,335,710 $295,292,240 +$20,611,177 $26.05 98
2016 Q4 11,360,059 $365,223,707 -$185,872 $32.15 103
2016 Q3 11,429,343 $281,043,687 -$2,379,879 $24.59 100
2016 Q2 10,945,752 $250,660,605 -$5,243,940 $22.90 103
2016 Q1 11,197,459 $242,128,000 +$7,128,168 $21.63 97
2015 Q4 10,833,193 $241,583,441 -$2,660,627 $22.30 95
2015 Q3 11,008,160 $212,465,836 +$3,457,322 $19.30 92
2015 Q2 10,267,701 $234,289,449 +$4,285,125 $22.82 89
2015 Q1 10,568,753 $203,218,163 -$1,506,878 $19.22 84
2014 Q4 10,713,637 $246,783,541 +$5,100,606 $23.04 89
2014 Q3 10,946,755 $263,488,028 +$1,082,323 $24.07 93
2014 Q2 10,931,221 $361,222,855 +$4,145,439 $33.06 105
2014 Q1 10,838,694 $326,692,447 +$4,470,350 $30.14 104