Natural Gas Services Group, Inc.
Natural Gas Services Group, Inc. (NGS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · NGS · as of Sep 30, 2025
Ownership Breakdown
116
Institutional Holders
▲ 9 vs Q2
$260.74M
Total Inst. Value
▲ $22.57M vs Q2
12.60M
Shares Outstanding
freeFloat 92.30%
9.32M
13F Shares Held
▲ 88,279 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
NGS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
DIMENSIONAL FUND ADVISORS LP oil & gas field services, nec | 857.4K | 6.87% | 6.87% | $24.00B | Nov 12, 2025 | ▼ 1.2K |
BLACKROCK, INC. oil & gas field services, nec | 761.6K | 6.10% | 6.10% | $21.32B | Nov 12, 2025 | ▼ 11.0K |
AWM INVESTMENT COMPANY, INC. oil & gas field services, nec | 676.7K | 5.42% | 5.42% | $18.94B | Nov 13, 2025 | — held |
AEGIS FINANCIAL CORP oil & gas field services, nec | 671.1K | 5.38% | 5.38% | $18.78B | Nov 12, 2025 | — held |
VANGUARD GROUP INC oil & gas field services, nec | 611.7K | 4.90% | 4.90% | $17.12B | Nov 7, 2025 | ▲ 7.3K |
AMERIPRISE FINANCIAL INC oil & gas field services, nec | 509.3K | 4.08% | 4.08% | $14.26B | Nov 14, 2025 | ▼ 370 |
MILL ROAD CAPITAL MANAGEMENT LLC oil & gas field services, nec | 404.7K | 3.24% | 3.24% | $11.33B | Nov 14, 2025 | — held |
PACIFIC RIDGE CAPITAL PARTNERS, LLC oil & gas field services, nec | 391.3K | 3.13% | 3.13% | $10.95B | Nov 12, 2025 | ▼ 9.0K |
ROYCE & ASSOCIATES LP oil & gas field services, nec | 361.6K | 2.90% | 2.90% | $10.12B | Nov 12, 2025 | ▲ 8.8K |
CANNELL CAPITAL LLC oil & gas field services, nec | 359.0K | 2.88% | 2.88% | $10.05B | Nov 14, 2025 | ▲ 27.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
28
Increased
+422.2K shares1
New Positions
first time holders15
Decreased
−240.3K shares0
Sold Out
fully exitedNet shares change (top 50)
+181.9K
+422.2K / −240.3K
Net new holders
+14
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
NGS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
4
Buy transactions
1
Sell transactions
4.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
HOLLEY JEAN K director | Jun 5, 2026 | Award | 4,456 | — | — | 18.8K | Form 4 ↗ |
Jenvey Nigel director | Jun 5, 2026 | Award | 4,456 | — | — | 26.2K | Form 4 ↗ |
Gallegos John A. Jr. director | Jun 5, 2026 | Award | 4,456 | — | — | 5.3K | Form 4 ↗ |
Gallegos John A. Jr. director | Apr 1, 2026 | Award | 889 | — | — | 889 | Form 4 ↗ |
Jacobs Justin Chief Executive Officer | Mar 13, 2026 | Award | 11,696 | — | — | 31.2K | Form 4 ↗ |
Jacobs Justin Chief Executive Officer | Mar 13, 2026 | Tax Withhold | 4,433 | $35.59 | $157.8K | 26.8K | Form 4 ↗ |
Eckert Ian M Chief Financial Officer | Mar 12, 2026 | Award | 10,506 | — | — | 10.5K | Form 4 ↗ |
Jacobs Justin Chief Executive Officer | Mar 12, 2026 | Award | 27,647 | — | — | 27.6K | Form 4 ↗ |
Taylor Stephen Charles director | Mar 5, 2026 | Sale | 70,000 | $37.58 | $2.63M | 205.4K | Form 4 ↗ |
Taylor Stephen Charles director | Mar 6, 2026 | Sale | 30,000 | $37.23 | $1.12M | 175.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Natural Gas Services Group, Inc. (NGS) is primarily owned by institutional investors, who hold approximately 73.9% of total shares outstanding. Company insiders own approximately 7.70%, while retail and public investors account for the remaining 18.36%.
The largest institutional shareholder of Natural Gas Services Group, Inc. is DIMENSIONAL FUND ADVISORS LP, holding approximately 857,397 shares — equal to 6.87% of outstanding shares — as of September 30, 2025.
A total of 116 institutional investors currently hold NGS stock, with a combined institutional value of approximately $260,735,324 as of the most recent 13F filing period.
Frequently asked questions
NGS ownershipNatural Gas Services Group, Inc. (NGS) is primarily owned by institutional investors, who hold approximately 73.9% of shares. The largest shareholder is DIMENSIONAL FUND ADVISORS LP with a 6.87% stake. Company insiders hold 7.70%. Data sourced from SEC Form 13F as of September 30, 2025.