Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 12 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
June 10, 2026 NGS A 3,521 · · 3,521 Direct · Acquired (price as of 2026-10-02)
June 5, 2026 NGS A 4,456 · · 26,239 Direct +20.46% Acquired (price as of 2026-10-02)
June 5, 2026 NGS M 4,456 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
June 13, 2025 NGS M 2,810 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
June 13, 2025 NGS A 2,810 · · 21,783 Direct +14.81% Acquired (price as of 2026-10-02)
June 5, 2025 NGS A 4,456 · · 4,456 Direct · Acquired (price as of 2026-10-02)
June 13, 2024 NGS A 5,620 · · 5,620 Direct · Acquired (price as of 2026-10-02)
May 9, 2024 NGS M 9,470 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 9, 2024 NGS A 9,470 · · 18,973 Direct +99.65% Acquired (price as of 2026-10-02)
May 9, 2023 NGS A 9,470 · · 9,470 Direct · Acquired (price as of 2026-10-02)
April 26, 2022 NGS A 4,212 $11.87 $49,996 9,503 Direct +79.61% Acquired 179.4% (price as of 2026-10-02)
April 1, 2021 NGS A 5,291 $9.45 $50,000 5,291 Direct · Acquired 251.0% (price as of 2026-10-02)

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
June 10, 2026 NGS Restricted Stock Units Common Stock (3,521) · · 3,521 Acquired
June 5, 2026 NGS Restricted Stock Units Common Stock (4,456) · · 4,456 Disposed
June 13, 2025 NGS Restricted Stock Units Common Stock (2,810) · · 2,810 Disposed
June 5, 2025 NGS Restricted Stock Units Common Stock (4,456) · · 4,456 Acquired
June 13, 2024 NGS Restricted Stock Units Common Stock (5,620) · · 5,620 Acquired
May 9, 2024 NGS Restricted Stock Units Common Stock (9,470) · · 9,470 Disposed
May 9, 2023 NGS Restricted Stock Unit Common Stock (9,470) · · 9,470 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
April 5, 2021 NGS Common Stock 0 Direct