Natural Gas Services Group, Inc. (NGS) Insider Trading

Last 12 months

Insiders bought $100k and sold $6.87M on the open market.

72% of the selling was scheduled in advance under 10b5-1 plans.

Net open-market

−$6.77M

2 buys · 7 sales

Under a 10b5-1 plan

72%

of the value sold

Insiders who bought / sold

1 / 1

executives and directors

Last open-market buy

Dec 2025

Dec 8, 2025

Get an email when NGS's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Mar 5 – 6	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	100,000	$37.48 average	$3.75M	26%	Form 4
Dec 10, 2025 – Dec 11, 2025	Stephen Charles Taylor Director	SoldNo plan 2 parts	20,000	$33.35 average	$667k	4.9%	Form 4
Dec 8, 2025	Jean K Holley Director	Bought	2,190	$32.04	$70k	18%	Form 4
Dec 8, 2025	Jean K Holley Director	Bought	935	$32.00	$30k	8.3%	Form 4
Dec 4, 2025	Stephen Charles Taylor Director	SoldNo plan	20,000	$32.12	$642k	4.7%	Form 4
Nov 19, 2025 – Nov 20, 2025	Stephen Charles Taylor Director	SoldNo plan 2 parts	20,000	$30.84 average	$617k	4.4%	Form 4
Nov 17, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	10,000	$31.01	$310k	2.2%	Form 4
Nov 10, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	18,748	$29.77 average	$558k	3.9%	Form 4
Nov 6, 2025 – Nov 7, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan 3 parts	11,252	$29.06 average	$327k	2.3%	Form 4
Sep 26, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	7,915	$28.50	$226k	1.6%	Form 4
Sep 25, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	759	$28.50	$22k	0.2%	Form 4
Sep 24, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	1,326	$28.50	$38k	0.3%	Form 4
Sep 23, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	11,457	$27.95 average	$320k	2.2%	Form 4
Sep 19, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	63	$27.50	$2k	<0.1%	Form 4
Sep 18, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	1,638	$27.50	$45k	0.3%	Form 4
Sep 17, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	6,553	$27.51	$180k	1.3%	Form 4
Sep 16, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	289	$27.50	$8k	<0.1%	Form 4
Sep 4, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan	10,000	$27.00	$270k	1.9%	Form 4
Sep 4, 2025	Jean K Holley Director	Bought	3,752	$26.58	$100k	93%	Form 4
Aug 22, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	20,000	$26.25 average	$525k	3.5%	Form 4
Aug 14, 2025	Jean K Holley Director	Bought	4,048	$24.49	$99k	New	Form 4
May 15, 2025	Stephen Charles Taylor Director	SoldNo plan	25,000	$24.90	$623k	4.4%	Form 4
Jan 21, 2025	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	19,400	$28.80 average	$559k	3.3%	Form 4
Dec 12, 2024	Stephen Charles Taylor Director	SoldNo plan	10,000	$27.15	$272k	1.7%	Form 4
Nov 22, 2024 – Nov 25, 2024	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	10,600	$28.03 average	$297k	1.7%	Form 4
Nov 19, 2024 – Nov 21, 2024	Stephen Charles Taylor Director	Sold10b5-1 plan 3 parts	46,516	$26.67 average	$1.24M	7.1%	Form 4
Nov 15, 2024 – Nov 18, 2024	Stephen Charles Taylor Director	Sold10b5-1 plan 2 parts	13,484	$25.14 average	$339k	2.0%	Form 4
Nov 11, 2024 – Nov 13, 2024	Stephen Charles Taylor Director	Sold10b5-1 plan 3 parts	10,000	$24.50 average	$245k	1.8%	Form 4

Mar 5 – 610b5-1 plan
Stephen Charles Taylor
Director · sold 100,000 at avg $37.48
$3.75M
26% of stake
Dec 10, 2025 – Dec 11, 2025No plan
Stephen Charles Taylor
Director · sold 20,000 at avg $33.35
$667k
4.9% of stake
Dec 8, 2025
Jean K Holley
Director · bought 2,190 at $32.04
$70k
18% of stake
Dec 8, 2025
Jean K Holley
Director · bought 935 at $32.00
$30k
8.3% of stake
Dec 4, 2025No plan
Stephen Charles Taylor
Director · sold 20,000 at $32.12
$642k
4.7% of stake
Nov 19, 2025 – Nov 20, 2025No plan
Stephen Charles Taylor
Director · sold 20,000 at avg $30.84
$617k
4.4% of stake
Nov 17, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 10,000 at $31.01
$310k
2.2% of stake
Nov 10, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 18,748 at avg $29.77
$558k
3.9% of stake
Nov 6, 2025 – Nov 7, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 11,252 at avg $29.06
$327k
2.3% of stake
Sep 26, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 7,915 at $28.50
$226k
1.6% of stake
Sep 25, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 759 at $28.50
$22k
0.2% of stake
Sep 24, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 1,326 at $28.50
$38k
0.3% of stake
Sep 23, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 11,457 at avg $27.95
$320k
2.2% of stake
Sep 19, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 63 at $27.50
$2k
<0.1% of stake
Sep 18, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 1,638 at $27.50
$45k
0.3% of stake
Sep 17, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 6,553 at $27.51
$180k
1.3% of stake
Sep 16, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 289 at $27.50
$8k
<0.1% of stake
Sep 4, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 10,000 at $27.00
$270k
1.9% of stake
Sep 4, 2025
Jean K Holley
Director · bought 3,752 at $26.58
$100k
93% of stake
Aug 22, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 20,000 at avg $26.25
$525k
3.5% of stake
Aug 14, 2025
Jean K Holley
Director · bought 4,048 at $24.49
$99k
New position
May 15, 2025No plan
Stephen Charles Taylor
Director · sold 25,000 at $24.90
$623k
4.4% of stake
Jan 21, 202510b5-1 plan
Stephen Charles Taylor
Director · sold 19,400 at avg $28.80
$559k
3.3% of stake
Dec 12, 2024No plan
Stephen Charles Taylor
Director · sold 10,000 at $27.15
$272k
1.7% of stake
Nov 22, 2024 – Nov 25, 202410b5-1 plan
Stephen Charles Taylor
Director · sold 10,600 at avg $28.03
$297k
1.7% of stake
Nov 19, 2024 – Nov 21, 202410b5-1 plan
Stephen Charles Taylor
Director · sold 46,516 at avg $26.67
$1.24M
7.1% of stake
Nov 15, 2024 – Nov 18, 202410b5-1 plan
Stephen Charles Taylor
Director · sold 13,484 at avg $25.14
$339k
2.0% of stake
Nov 11, 2024 – Nov 13, 202410b5-1 plan
Stephen Charles Taylor
Director · sold 10,000 at avg $24.50
$245k
1.8% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch NGS, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in NGS's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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