Donald J Tringali

CIK 1199696 · 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) 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.

Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
June 10, 2026 NGS A 4,574 — — 4,574 Direct — Acquired (price as of 2026-08-21)
June 8, 2026 NGS A 49 $42.42 $2,079 17,763 Indirect +0.28% Acquired -15.3% (price as of 2026-08-21)
June 5, 2026 NGS A 4,010 — — 17,714 Indirect +29.26% Acquired (price as of 2026-08-21)
June 5, 2026 NGS M 4,456 — — 0 Direct -100.00% Disposed (price as of 2026-08-21)
June 5, 2026 NGS A 446 — — 1,955 Direct +29.56% Acquired (price as of 2026-08-21)
March 4, 2026 NGS A 40 $37.52 $1,501 13,704 Indirect +0.29% Acquired -4.2% (price as of 2026-08-21)
Dec. 3, 2025 NGS A 49 $30.50 $1,494 13,664 Indirect +0.36% Acquired 17.9% (price as of 2026-08-21)
Aug. 8, 2025 NGS A 34 $24.78 $843 13,615 Indirect +0.25% Acquired 45.1% (price as of 2026-08-21)
June 13, 2025 NGS M 5,620 — — 0 Direct -100.00% Disposed (price as of 2026-08-21)
June 13, 2025 NGS A 5,058 — — 13,581 Indirect +59.35% Acquired (price as of 2026-08-21)
June 13, 2025 NGS A 562 — — 1,509 Direct +59.35% Acquired (price as of 2026-08-21)
June 5, 2025 NGS A 4,456 — — 4,456 Direct — Acquired (price as of 2026-08-21)
June 13, 2024 NGS A 5,620 — — 5,620 Direct — Acquired (price as of 2026-08-21)
May 9, 2024 NGS M 9,470 — — 0 Direct -100.00% Disposed (price as of 2026-08-21)
May 9, 2024 NGS A 8,523 — — 8,523 Indirect — Acquired (price as of 2026-08-21)
May 9, 2024 NGS A 947 — — 947 Direct — Acquired (price as of 2026-08-21)
May 9, 2023 NGS A 9,470 — — 9,470 Direct — Acquired (price as of 2026-08-21)
Nov. 21, 2022 AIFF A 10,000 — — 105,000 Direct +10.53% Acquired (price as of 2026-08-21)
Dec. 30, 2021 AIFF A 50,000 — — 70,000 Direct +250.00% Acquired (price as of 2026-08-21)
Aug. 26, 2021 AIFF A 25,000 $2.00 $50,000 25,000 Direct — Acquired -98.2% (price as of 2026-08-21)
Aug. 26, 2021 AIFF A 25,000 $2.70 $67,500 45,000 Direct +125.00% Acquired -98.7% (price as of 2026-08-21)

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 10, 2026 NGS Restricted Stock Units Common Stock (4,574) — — 4,574 Acquired
June 5, 2026 NGS Restricted Stock Units Common Stock (4,456) — — 4,456 Disposed
June 13, 2025 NGS Restricted Stock Units Common Stock (5,620) — — 5,620 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
Nov. 21, 2022 AIFF Options (Right-to-Buy) Common Stock (10,000) $0.86 Oct. 24, 2027 10,000 Acquired
Dec. 30, 2021 AIFF Options (right-to-buy) Common Stock (50,000) $4.89 Dec. 30, 2026 50,000 Acquired
Aug. 26, 2021 AIFF Warrants (right-to-buy) Common Stock (25,000) $3.00 Aug. 31, 2026 25,000 Acquired

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

Initial ownership (Form 3) 2 holdings

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

Date Ticker Security Shares Ownership
May 3, 2023 NGS Common Stock 0 Direct
May 12, 2021 AIFF Options (Right-to-Buy)→ COMMON STOCK (20,000) 20,000 Direct