Form4insider filings, from the source

Company · CIK 0001084991 · SIC 1389 — Oil & Gas Field Services, NEC · NYSE

NATURAL GAS SERVICES GROUP INC · NGS

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 2, 2026 AForm 4 →Sep 3, 3:15 pm EDTDonald J TringaliDirector59$35.22$2,07813,812—
Jun 8, 2026 AForm 4 →Jun 9, 10:48 am EDTStephen Charles TaylorDirector334$42.42$14,16895,137—
Jun 8, 2026 AForm 4 →Jun 9, 10:41 am EDTDonald J TringaliDirector49$42.42$2,07917,763— amended
Jun 5, 2026 AJForm 4 →Jun 8, 3:39 pm EDTGeorganne HodgesDirector6,684$39.87$88,83011,066—
Jun 5, 2026 AJForm 4 →Jun 8, 3:26 pm EDTStephen Charles TaylorDirector6,684$39.87$88,830197,818—
Jun 5, 2026 AForm 4 →Jun 8, 3:00 pm EDTDonald J TringaliDirector4,456——17,714—
Jun 5, 2026 AForm 4 →Jun 8, 2:44 pm EDTJean K HolleyDirector4,456——18,846—
Jun 5, 2026 AForm 4 →Jun 8, 2:19 pm EDTNigel JenveyDirector4,456——26,239—
Jun 5, 2026 AForm 4 →Jun 8, 1:20 pm EDTJohn A. Gallegos Jr.Director4,456——5,345—
Apr 1, 2026 AForm 4 →Jun 8, 1:00 pm EDTJohn A. Gallegos Jr.Director889——889— late

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Jun 10, 2026 AForm 4 →Jun 11, 10:27 am EDTDonald J TringaliDirector4,574——4,574—
Jun 10, 2026 AForm 4 →Jun 11, 10:19 am EDTNigel JenveyDirector3,521——3,521—
Jun 10, 2026 AForm 4 →Jun 11, 10:04 am EDTJean K HolleyDirector3,009——3,009—
Jun 10, 2026 AForm 4 →Jun 11, 9:57 am EDTGeorganne HodgesDirector3,009——3,009—
Jun 10, 2026 AForm 4 →Jun 11, 9:46 am EDTJohn A. Gallegos Jr.Director3,009——3,009—
Jun 10, 2026 AForm 4 →Jun 11, 9:36 am EDTJohn Earl JacksonDirector3,009——3,009—
Jun 5, 2026 MForm 4 →Jun 8, 3:39 pm EDTGeorganne HodgesDirector4,456——0—
Jun 5, 2026 MForm 4 →Jun 8, 3:26 pm EDTStephen Charles TaylorDirector4,456——0—
Jun 5, 2026 MForm 4 →Jun 8, 3:00 pm EDTDonald J TringaliDirector4,456——0—
Jun 5, 2026 MForm 4 →Jun 8, 2:44 pm EDTJean K HolleyDirector4,456——0—
Jun 5, 2026 MForm 4 →Jun 8, 2:19 pm EDTNigel JenveyDirector4,456——0—
Jun 5, 2026 MForm 4 →Jun 8, 1:20 pm EDTJohn A. Gallegos Jr.Director4,456——0—
Apr 1, 2026 MForm 4 →Jun 8, 1:00 pm EDTJohn A. Gallegos Jr.Director889——0— late