Form 4 for NGS NATURAL GAS SERVICES GROUP INC

Accepted 2026-06-08 15:39:21 ET · period of report 2026-06-05 · accession 0001613695-26-000005 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-06-08 15:39	2026-06-05	NGS	Hodges Georganne	Dir	A - Grant	—	+4,456	13.3K	+50%	—
D	2026-06-08 15:39	2026-06-05	NGS	Hodges Georganne	Dir	J - Other	$39.87	-2,228	11.1K	-17%	-$88.8K
D	2026-06-08 15:39	2026-06-05	NGS	Hodges Georganne	Dir	M - OptEx	$0.00	-4,456	0	-100%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-06-05	A	A	4,456	—	13,294	D	—	—	(F1) Not applicable. The reported shares were acquired in connection with the vesting of a restricted stock unit (RSU)award.
2	Common	Common Stock	2026-06-05	J	D	2,228	$39.87	11,066	D	—	—	(F2) Represents an election by the reporting person to receive 50% of the value of the RSUs in cash.
3	Derivative	Restricted Stock Units	2026-06-05	M	D	4,456	$0.00	0	D	— · — to —	4,456 Common Stock	(F3) Not applicable. Each RSU represented the right to receive one share of the Issuer's common stock upon vesting (or upon election by the reporting person, up to 50% of the RSUs in cash). (F3) Not applicable. Each RSU represented the right to receive one share of the Issuer's common stock upon vesting (or upon election by the reporting person, up to 50% of the RSUs in cash). (F3) Not applicable. Each RSU represented the right to receive one share of the Issuer's common stock upon vesting (or upon election by the reporting person, up to 50% of the RSUs in cash).