Updated Jul 16, 2026 · Last SEC filing 2026-06-11
NATURAL GAS SERVICES GROUP INC (NGS) has filed 14 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-11. 7 Form 8-K material event filings were reported by NGS in the last 90 days. InsiderAlpha tracks every NGS SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Oil & Gas Field Services, NEC (SIC 1389) |
|---|---|
| SEC CIK | 0001084991 |
| Form 4 filings (90d) | 14 |
|---|---|
| Form 8-K filings (90d) | 7 |
| Latest Form 4 filing | 2026-06-11 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| TRINGALI DONALD J | Director | A — Grant or award | 49 | $42.42 | $2K | SEC | |
| Taylor Stephen Charles | Director | A — Grant or award | 334 | $42.42 | $14K | SEC | |
| Taylor Stephen Charles | Director | A — Grant or award | 4.5K | — | — | SEC | |
| Hodges Georganne | Director | A — Grant or award | 4.5K | — | — | SEC | |
| Taylor Stephen Charles | Director | J — Other acquisition / disposition | 2.2K | $39.87 | $89K | SEC | |
| Hodges Georganne | Director | J — Other acquisition / disposition | 2.2K | $39.87 | $89K | SEC | |
| HOLLEY JEAN K | Director | A — Grant or award | 4.5K | — | — | SEC | |
| TRINGALI DONALD J | Director | A — Grant or award | 446 | — | — | SEC | |
| Jenvey Nigel | Director | A — Grant or award | 4.5K | — | — | SEC | |
| TRINGALI DONALD J | Director | A — Grant or award | 4.0K | — | — | SEC | |
| Gallegos John A. Jr. | Director | A — Grant or award | 889 | — | — | SEC | |
| Taylor Stephen Charles | Director | S — Open-market sale | 30.0K | $37.23 | $1.12M | SEC | |
| Taylor Stephen Charles | Director | S — Open-market sale | 70.0K | $37.58 | $2.63M | SEC | |
| Taylor Stephen Charles | Director | A — Grant or award | 336 | $37.52 | $13K | SEC | |
| TRINGALI DONALD J | Director | A — Grant or award | 40 | $37.52 | $2K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for NATURAL GAS SERVICES GROUP INC (NGS). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| TRINGALI DONALD J | 5 | $2K |
| Taylor Stephen Charles | 4 | $103K |
| Hodges Georganne | 4 | $89K |
| HOLLEY JEAN K | 3 | — |
| Gallegos John A. Jr. | 3 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in NGS insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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