Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 21 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

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Nov. 3, 2025 NGS A 128 · · 5,327 Direct +2.46% Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS A 2,486 · · 7,813 Direct +46.67% Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS A 1,909 · · 9,722 Direct +24.43% Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS A 6,250 · · 15,972 Direct +64.29% Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS A 1,910 · · 17,882 Direct +11.96% Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS F 3,849 $27.84 $107,156 14,033 Direct -21.52% Disposed 20.6% (price as of 2026-10-05)
Nov. 3, 2025 NGS M 128 · · 0 Direct · Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS M 2,486 · · 0 Direct · Acquired (price as of 2026-10-05)
Nov. 3, 2025 NGS M 1,909 · · 0 Direct · Acquired (price as of 2026-10-05)
Oct. 9, 2025 NGS M 2,121 · · 2,120 Direct · Acquired (price as of 2026-10-05)
Oct. 9, 2025 NGS F 644 $27.10 $17,452 5,199 Direct -11.02% Disposed 23.9% (price as of 2026-10-05)
Oct. 9, 2025 NGS A 2,121 · · 5,843 Direct +56.99% Acquired (price as of 2026-10-05)
April 22, 2025 NGS M 3,764 · · 7,529 Direct -33.33% Disposed (price as of 2026-10-05)
April 22, 2025 NGS F 1,519 $22.88 $34,755 3,722 Direct -28.98% Disposed 46.8% (price as of 2026-10-05)
April 22, 2025 NGS A 3,764 · · 5,241 Direct +254.84% Acquired (price as of 2026-10-05)
March 13, 2025 NGS A 9,014 · · 9,014 Direct · Acquired (price as of 2026-10-05)
Oct. 21, 2024 NGS M 2,120 · · 4,241 Direct -33.33% Disposed (price as of 2026-10-05)
Oct. 21, 2024 NGS F 643 $20.45 $13,149 1,477 Direct -30.33% Disposed 64.2% (price as of 2026-10-05)
Oct. 21, 2024 NGS A 2,120 · · 2,120 Direct · Acquired (price as of 2026-10-05)
March 4, 2024 NGS A 11,293 · · 11,293 Direct · Acquired (price as of 2026-10-05)
Oct. 9, 2023 NGS A 6,361 · · 6,361 Direct · Acquired (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Nov. 3, 2025 NGS Restricted Stock Units Common Stock (128) · · 128 Acquired
Nov. 3, 2025 NGS Restricted Stock Units Common Stock (2,486) · · 2,486 Acquired
Nov. 3, 2025 NGS Restricted Stock Units Common Stock (1,909) · · 1,909 Acquired
Oct. 9, 2025 NGS Restricted Stock Units Common Stock (2,121) · · 2,121 Acquired
April 22, 2025 NGS Restricted Stock Units Common Stock (3,764) · · 3,764 Disposed
March 13, 2025 NGS Restricted Stock Units Common Stock (9,014) · · 9,014 Acquired
Oct. 21, 2024 NGS Restricted Stock Units Common Stock (2,120) · · 2,120 Disposed
March 4, 2024 NGS Restricted Stock Units Common Stock (11,293) · · 11,293 Acquired
Oct. 9, 2023 NGS Restricted Stock Units Commmon Stock (6,361) · · 6,361 Acquired

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

Initial ownership (Form 3) 1 holding

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Oct. 10, 2023 NGS Common Stock 0 Direct

Compensation (DEF 14A)

08

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

NGS

COO
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2024 $400,000 · · · $352,500 · $18,550 $1,225,254
2023 $92,055 · · · $68,219 · $2,417 $253,653

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