NGS · Insider Trading
Natural Gas Services Group, Inc.
Every open-market purchase and sale reported by NGS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-03 | Donald J Tringali | Director | A | +59 | +$2.08K |
| 2026-09-03 | Donald J Tringali | Director | — | — | — |
| 2026-06-11 | John Earl Jackson | Director | A | +3,009 deriv. | — |
| 2026-06-11 | Nigel Jenvey | Director | A | — | — |
| 2026-06-11 | Georganne Hodges | Director | A | — | — |
| 2026-06-11 | Donald J Tringali | Director | A | — | — |
| 2026-06-11 | John A. Gallegos Jr. | Director | A | — | — |
| 2026-06-11 | Jean K Holley | Director | A | — | — |
| 2026-06-09 | Donald J Tringali | Director | A | +49 | +$2.08K |
| 2026-06-09 | Stephen Charles Taylor | Director | A | +334 | +$14.17K |
| 2026-06-08 | Georganne Hodges | Director | MIXED | +2,228 | −$88.83K |
| 2026-06-08 | Donald J Tringali | Director | A | +4,456 | — |
| 2026-06-08 | John A. Gallegos Jr. | Director | A | +4,456 | — |
| 2026-06-08 | Jean K Holley | Director | A | +4,456 | — |
| 2026-06-08 | Nigel Jenvey | Director | A | +4,456 | — |
| 2026-06-08 | John A. Gallegos Jr. | Director | A | +889 | — |
| 2026-06-08 | Stephen Charles Taylor | Director | MIXED | +2,228 | −$88.83K |
| 2026-03-16 | Ian M Eckert | Chief Financial Officer | A | — | — |
| 2026-03-16 | Justin Jacobs | Chief Executive Officer | A | — | — |
| 2026-03-16 | Justin Jacobs | Chief Executive Officer | MIXED | +7,263 | −$157.77K |
| 2026-03-09 | Stephen Charles Taylor | Director | Sell | −100,000 | −$3.75M |
| 2026-03-06 | Donald J Tringali | Director | A | +40 | +$1.50K |
| 2026-03-06 | Stephen Charles Taylor | Director | A | +336 | +$12.61K |
| 2026-02-03 | Justin Jacobs | Chief Executive Officer | MIXED | +6,170 | −$148.09K |
| 2025-12-30 | Ian M Eckert | Chief Financial Officer | MIXED | +1,764 | −$26.10K |
| 2025-12-12 | Stephen Charles Taylor | Director | Sell | −20,000 | −$667.00K |
| 2025-12-10 | Jean K Holley | Director | Buy | +2,190 | +$70.17K |
| 2025-12-09 | Jean K Holley | Director | Buy | +935 | +$29.92K |
| 2025-12-05 | Stephen Charles Taylor | Director | A | +412 | +$12.57K |
| 2025-12-05 | Donald J Tringali | Director | A | +49 | +$1.49K |
| 2025-12-05 | Stephen Charles Taylor | Director | Sell | −20,000 | −$642.40K |
| 2025-11-20 | Stephen Charles Taylor | Director | Sell | −20,000 | −$616.80K |
| 2025-11-18 | Stephen Charles Taylor | Director | Sell | −10,000 | −$310.07K |
| 2025-11-12 | Stephen Charles Taylor | Director | Sell | −18,748 | −$558.09K |
| 2025-11-07 | Stephen Charles Taylor | Director | Sell | −11,252 | −$326.95K |
| 2025-11-03 | Jean K Holley | Director | A | +3,465 | — |
| 2025-11-03 | Brian L Tucker | President & COO | MIXED | +8,834 | −$107.16K |
| 2025-10-10 | Brian L Tucker | President & COO | MIXED | +1,477 | −$17.45K |
| 2025-09-26 | Stephen Charles Taylor | Director | Sell | −7,915 | −$225.59K |
| 2025-09-25 | Stephen Charles Taylor | Director | Sell | −759 | −$21.63K |
| 2025-09-24 | Stephen Charles Taylor | Director | Sell | −1,326 | −$37.79K |
| 2025-09-23 | Stephen Charles Taylor | Director | Sell | −11,457 | −$320.22K |
| 2025-09-19 | Stephen Charles Taylor | Director | Sell | −63 | −$1.73K |
| 2025-09-18 | Stephen Charles Taylor | Director | Sell | −1,638 | −$45.05K |
| 2025-09-17 | Stephen Charles Taylor | Director | Sell | −6,553 | −$180.25K |
| 2025-09-16 | Stephen Charles Taylor | Director | Sell | −289 | −$7.95K |
| 2025-09-15 | Stephen Charles Taylor | Director | A | +2,098 | — |
| 2025-09-04 | Jean K Holley | Director | Buy | +3,752 | +$99.72K |
| 2025-09-04 | Stephen Charles Taylor | Director | Sell | −10,000 | −$270.02K |
| 2025-08-25 | Stephen Charles Taylor | Director | A | +459 | +$11.37K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Stephen Charles Taylor | Director | 292,955 | $9.38M |
| Justin Jacobs | Chief Executive Officer | 40,659 | $1.30M |
| Nigel Jenvey | Director | 26,239 | $839.91K |
| Donald J Tringali | Director | 19,718 | $631.17K |
| Jean K Holley | Director | 18,846 | $603.26K |
| Brian L Tucker | President & COO | 17,882 | $572.40K |
| Georganne Hodges | Director | 12,471 | $399.20K |
| John A. Gallegos Jr. | Director | 5,345 | $171.09K |
| Ian M Eckert | Chief Financial Officer | 1,764 | $56.47K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the NGS quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.