Stephen Charles Taylor

CIK 1316004 · View on SEC EDGAR ↗

Insider

First SEC filing: June 9, 2026 · Latest: June 9, 2026

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Insider at

Insider transactions

0 buys (P) 25 sells (S) Net: $-8,503,967 + 57 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

57 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
March 6, 2026 NGS S 30,000 $37.23 $1,116,900 175,432 Direct -14.60% Disposed -4.7% (price as of 2026-08-20)
March 5, 2026 NGS S 70,000 $37.58 $2,630,600 205,432 Direct -25.41% Disposed -5.6% (price as of 2026-08-20)
Dec. 11, 2025 NGS S 10,000 $33.54 $335,400 275,432 Direct -3.50% Disposed 5.8% (price as of 2026-08-20)
Dec. 10, 2025 NGS S 10,000 $33.16 $331,600 285,432 Direct -3.38% Disposed 7.0% (price as of 2026-08-20)
Dec. 4, 2025 NGS S 20,000 $32.12 $642,400 295,432 Direct -6.34% Disposed 10.5% (price as of 2026-08-20)
Nov. 20, 2025 NGS S 10,000 $31.37 $313,700 315,432 Direct -3.07% Disposed 13.1% (price as of 2026-08-20)
Nov. 19, 2025 NGS S 10,000 $30.31 $303,100 325,432 Direct -2.98% Disposed 17.1% (price as of 2026-08-20)
Nov. 17, 2025 NGS S 10b5-1 10,000 $31.01 $310,100 335,432 Direct -2.89% Disposed 14.4% (price as of 2026-08-20)
Nov. 10, 2025 NGS S 10b5-1 8,748 $29.50 $258,066 355,432 Direct -2.40% Disposed 20.3% (price as of 2026-08-20)
Nov. 10, 2025 NGS S 10b5-1 10,000 $30.00 $300,000 345,432 Direct -2.81% Disposed 18.3% (price as of 2026-08-20)
Nov. 7, 2025 NGS S 10b5-1 9,900 $29.00 $287,100 365,432 Direct -2.64% Disposed 22.4% (price as of 2026-08-20)
Nov. 7, 2025 NGS S 10b5-1 1,252 $29.50 $36,934 364,180 Direct -0.34% Disposed 20.3% (price as of 2026-08-20)
Nov. 6, 2025 NGS S 10b5-1 100 $29.00 $2,900 375,332 Direct -0.03% Disposed 22.4% (price as of 2026-08-20)
Sept. 26, 2025 NGS S 10b5-1 7,915 $28.50 $225,578 375,432 Direct -2.06% Disposed 24.5% (price as of 2026-08-20)
Sept. 25, 2025 NGS S 10b5-1 759 $28.50 $21,632 383,347 Direct -0.20% Disposed 24.5% (price as of 2026-08-20)
Sept. 24, 2025 NGS S 10b5-1 1,326 $28.50 $37,791 384,106 Direct -0.34% Disposed 24.5% (price as of 2026-08-20)
Sept. 23, 2025 NGS S 10b5-1 10,000 $28.01 $280,100 385,432 Direct -2.53% Disposed 26.7% (price as of 2026-08-20)
Sept. 23, 2025 NGS S 10b5-1 1,457 $27.50 $40,068 395,432 Direct -0.37% Disposed 29.1% (price as of 2026-08-20)
Sept. 19, 2025 NGS S 10b5-1 63 $27.50 $1,732 396,889 Direct -0.02% Disposed 29.1% (price as of 2026-08-20)
Sept. 18, 2025 NGS S 10b5-1 1,638 $27.50 $45,045 396,952 Direct -0.41% Disposed 29.1% (price as of 2026-08-20)
Sept. 17, 2025 NGS S 10b5-1 6,553 $27.51 $180,273 398,590 Direct -1.62% Disposed 29.0% (price as of 2026-08-20)
Sept. 16, 2025 NGS S 10b5-1 289 $27.50 $7,948 405,143 Direct -0.07% Disposed 29.1% (price as of 2026-08-20)
Sept. 4, 2025 NGS S 10b5-1 10,000 $27.00 $270,000 403,334 Direct -2.42% Disposed 31.4% (price as of 2026-08-20)
Aug. 22, 2025 NGS S 10b5-1 10,000 $26.00 $260,000 413,334 Direct -2.36% Disposed 36.5% (price as of 2026-08-20)
Aug. 22, 2025 NGS S 10b5-1 10,000 $26.50 $265,000 423,334 Direct -2.31% Disposed 33.9% (price as of 2026-08-20)
May 15, 2025 NGS S 25,000 $24.90 $622,500 433,334 Direct -5.45% Disposed 42.5% (price as of 2026-08-20)
Jan. 21, 2025 NGS S 10b5-1 9,400 $28.57 $268,558 448,387 Direct -2.05% Disposed 24.2% (price as of 2026-08-20)
Jan. 21, 2025 NGS S 10b5-1 10,000 $29.01 $290,100 438,387 Direct -2.23% Disposed 22.3% (price as of 2026-08-20)
Dec. 12, 2024 NGS S 10,000 $27.15 $271,500 457,787 Direct -2.14% Disposed 30.7% (price as of 2026-08-20)
Nov. 25, 2024 NGS S 10b5-1 600 $28.50 $17,100 467,787 Direct -0.13% Disposed 24.5% (price as of 2026-08-20)
Nov. 22, 2024 NGS S 10b5-1 10,000 $28.00 $280,000 468,387 Direct -2.09% Disposed 26.8% (price as of 2026-08-20)
Nov. 21, 2024 NGS S 10b5-1 38,479 $26.89 $1,034,700 478,387 Direct -7.44% Disposed 32.0% (price as of 2026-08-20)
Nov. 20, 2024 NGS S 10b5-1 1,521 $26.00 $39,546 516,866 Direct -0.29% Disposed 36.5% (price as of 2026-08-20)
Nov. 19, 2024 NGS S 10b5-1 6,516 $25.50 $166,158 518,387 Direct -1.24% Disposed 39.2% (price as of 2026-08-20)
Nov. 18, 2024 NGS S 10b5-1 3,442 $25.51 $87,805 524,903 Direct -0.65% Disposed 39.1% (price as of 2026-08-20)
Nov. 15, 2024 NGS S 10b5-1 10,042 $25.01 $251,150 528,345 Direct -1.87% Disposed 41.9% (price as of 2026-08-20)
Nov. 13, 2024 NGS S 10b5-1 2,191 $24.50 $53,680 538,387 Direct -0.41% Disposed 44.9% (price as of 2026-08-20)
Nov. 12, 2024 NGS S 10b5-1 4,713 $24.51 $115,516 540,578 Direct -0.86% Disposed 44.8% (price as of 2026-08-20)
Nov. 11, 2024 NGS S 10b5-1 3,096 $24.50 $75,852 545,291 Direct -0.56% Disposed 44.9% (price as of 2026-08-20)
Aug. 26, 2024 NGS S 3,181 $22.00 $69,982 548,387 Direct -0.58% Disposed 61.3% (price as of 2026-08-20)
Aug. 20, 2024 NGS S 10b5-1 4,690 $22.14 $103,837 551,568 Direct -0.84% Disposed 60.3% (price as of 2026-08-20)
Aug. 20, 2024 NGS S 4,690 $22.14 $103,837 551,568 Direct -0.84% Disposed 60.3% (price as of 2026-08-20)
June 7, 2022 NGS S 10b5-1 3,918 $15.00 $58,770 511,259 Direct -0.76% Disposed 136.6% (price as of 2026-08-20)

Showing latest 100 of 215 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
June 5, 2026 NGS Restricted Stock Units Common Stock (4,456) — — 4,456 Disposed
Sept. 15, 2025 NGS Restricted Stock Units Common Stock (2,098) — — 2,098 Acquired
June 5, 2025 NGS Restricted Stock Units Common Stock (4,456) — — 4,456 Acquired
Sept. 13, 2024 NGS Restricted Stock Units Common Stock (4,195) — — 4,195 Acquired
June 30, 2024 NGS Restricted Stock Units Common Stock (10,101) — — 10,101 Disposed
June 30, 2023 NGS Restricted Stock Units Common Stock (10,101) — — 10,101 Acquired
April 28, 2023 NGS Restricted Stock Units Common Stock (3,138) — — 3,138 Disposed
April 28, 2022 NGS Restricted Stock Units Common Stock (3,137) — — 3,137 Disposed
March 29, 2022 NGS Restricted Stock Units Common Stock (10,973) — — 10,973 Disposed
April 28, 2021 NGS Restricted Stock Units Common Stock (3,138) — — 3,138 Disposed
March 29, 2021 NGS Restricted Stock Units Common Stock (10,973) — — 10,973 Disposed
March 15, 2021 NGS Restricted Stock Units Common Stock (9,317) — — 9,317 Disposed
April 28, 2020 NGS Restricted Stock Units Common Stock (9,413) — — 9,413 Acquired
March 29, 2020 NGS Restricted Stock Units Common Stock (10,973) — — 10,973 Disposed
March 15, 2020 NGS Restricted Stock Units Common Stock (9,317) — — 9,317 Disposed
Feb. 14, 2020 NGS Restricted Stock Units Common Stock (21,139) — — 21,139 Disposed
June 28, 2019 NGS Restricted Stock Units Common Stock $17.29 — 32,919 Acquired
March 15, 2019 NGS Restricted Stock Units Common Stock (9,317) — — 9,317 Disposed
Feb. 14, 2019 NGS Restricted Stock Units Common Stock (21,140) — — 21,140 Disposed
Feb. 5, 2019 NGS Employee Stock Option Common Stock (2,720) $7.84 March 16, 2019 2,720 Disposed
Feb. 4, 2019 NGS Employee Stock Option Common Stock (12,771) $7.84 March 16, 2019 12,771 Disposed
Jan. 31, 2019 NGS Employee Stock Option Common Stock (18) $7.84 March 16, 2019 18 Disposed
Jan. 30, 2019 NGS Employee Stock Option Common Stock (348) $7.84 March 16, 2019 348 Disposed
Jan. 29, 2019 NGS Employee Stock Option Common Stock (4,905) $7.84 March 16, 2019 4,905 Disposed
Jan. 28, 2019 NGS Employee Stock Option Common Stock (1,110) $7.84 March 16, 2019 1,110 Disposed
Jan. 25, 2019 NGS Employee Stock Option Common Stock (1,980) $7.84 March 16, 2019 1,980 Disposed
Jan. 25, 2019 NGS Employee Stock Option Common Stock (2,994) $9.95 Jan. 28, 2019 2,994 Disposed
Jan. 24, 2019 NGS Employee Stock Option Common Stock (1,205) $9.95 Jan. 28, 2019 1,205 Disposed
Jan. 23, 2019 NGS Employee Stock Option Common Stock (1,846) $9.95 Jan. 28, 2019 1,846 Disposed
Jan. 22, 2019 NGS Common Stock Common Stock (1,200) $9.95 Jan. 28, 2019 1,200 Disposed
Jan. 18, 2019 NGS Employee Stock Option Common Stock (12,444) $9.95 Jan. 28, 2019 12,444 Disposed
Jan. 17, 2019 NGS Employee Stock Option Common Stock (10,311) $9.95 Jan. 28, 2019 10,311 Disposed
Sept. 6, 2018 NGS Employee Stock Option Common Stock (4,000) $17.51 Sept. 10, 2018 5,000 Disposed
Aug. 29, 2018 NGS Employee Stock Option Common Stock (13,776) $17.51 Sept. 10, 2018 13,776 Disposed
Aug. 21, 2018 NGS Employee Stock Option Common Stock (3,904) $17.51 Sept. 10, 2018 3,904 Disposed
March 23, 2018 NGS Employee Stock Option Common Stock (3,320) $17.51 Sept. 10, 2018 3,320 Disposed
March 15, 2018 NGS Restricted Stock Units Common Stock (27,951) — — 27,951 Acquired
Feb. 14, 2018 NGS Restricted Stock Units Common Stock (21,139) — — 21,139 Disposed
Dec. 19, 2017 NGS Employee Stock Option Common Stock (16,212) $20.06 Jan. 15, 2018 16,212 Disposed
Oct. 3, 2017 NGS Employee Stock Option Common Stock (3,874) $20.06 Jan. 15, 2018 3,874 Disposed
Feb. 14, 2017 NGS Restricted Stock Units Common Stock (17,616) — — 17,616 Acquired
Jan. 11, 2017 NGS Employee Stock Option Common Stock (40,000) $20.06 Jan. 15, 2018 19,914 Disposed
March 22, 2016 NGS Nonstatutory Stock Option (right to buy) Common Stock (15,000) $14.22 Nov. 21, 2016 15,000 Disposed
March 18, 2015 NGS Nonstatutory Stock Option (right to buy) Common Stock (45,000) $9.22 Aug. 24, 2015 45,000 Disposed
Jan. 18, 2010 NGS Employee Stock Option (right to buy) [F2] Common Stock (30,000) $19.90 Jan. 17, 2020 30,000 Acquired
March 17, 2009 NGS Employee Stock Option (right to buy) [F6] Common Stock (23,852) $7.84 March 16, 2019 23,852 Acquired
Jan. 28, 2009 NGS Employee Stock Option (right to buy) [F5] Common Stock (30,000) $9.95 Jan. 28, 2019 30,000 Acquired
Sept. 10, 2008 NGS Employee Stock Option (right to buy) [F4] Common Stock (25,000) $17.51 Sept. 10, 2018 25,000 Acquired
Jan. 15, 2008 NGS Employee Stock Option (right to buy [F3] Common Stock (40,000) $20.06 Jan. 15, 2018 40,000 Acquired
Nov. 21, 2006 NGS Nonstatutory Stock Option (right to buy) [F2] Common Stock (15,000) $14.22 Nov. 21, 2016 15,000 Acquired
Aug. 24, 2005 NGS Nonstatutory Stock Option (right to buy) [F1] Common Stock (45,000) $9.22 Aug. 24, 2015 45,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

NGS

CEO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2024 $242,285 — — — — — $20,350 $262,635
2023 $612,000 — — — — — $2,773,243 $3,585,243
2022 $313,545 — — — $313,545 — $9,362 $949,997

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.