Insider at

04

Insider transactions

05
0 buys (P) 5 sells (S) Net: $-14,427,846 + 44 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

44 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Jan. 7, 2026 NTSK S 31,594 $17.58 $555,423 0 Direct -100.00% Disposed 4.8% (price as of 2026-10-05)
Jan. 6, 2026 NTSK S 178,482 $17.13 $3,057,397 0 Direct -100.00% Disposed 7.5% (price as of 2026-10-05)
Jan. 5, 2026 NTSK S 175,707 $17.33 $3,045,002 0 Direct -100.00% Disposed 6.3% (price as of 2026-10-05)
Jan. 2, 2026 NTSK S 346,061 $16.91 $5,851,892 0 Direct -100.00% Disposed 8.9% (price as of 2026-10-05)
Dec. 31, 2025 NTSK S 108,553 $17.67 $1,918,132 0 Direct -100.00% Disposed 4.2% (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
Oct. 1, 2026 NTSK Restricted Stock Units Class B Common Stock (564,272) · · 564,272 Disposed
Oct. 1, 2026 NTSK Restricted Stock Units Class B Common Stock (451,416) · · 451,416 Disposed
Oct. 1, 2026 NTSK Class B Common Stock Class A Common Stock (1,015,688) · · 1,015,688 Acquired
Oct. 1, 2026 NTSK Class B Common Stock Class A Common Stock (561,475) · · 561,475 Disposed
July 1, 2026 NTSK Class B Common Stock Class A Common Stock (561,474) · · 561,474 Disposed
July 1, 2026 NTSK Class B Common Stock Class A Common Stock (1,015,686) · · 1,015,686 Acquired
July 1, 2026 NTSK Restricted Stock Units Class B Common Stock (451,416) · · 451,416 Disposed
July 1, 2026 NTSK Restricted Stock Units Class B Commom Stock (564,270) · · 564,270 Disposed
April 1, 2026 NTSK Restricted Stock Units Class B Common Stock (564,270) · · 564,270 Disposed
April 1, 2026 NTSK Restricted Stock Units Class B Common Stock (451,417) · · 451,417 Disposed
April 1, 2026 NTSK Class B Common Stock Class A Common Stock (1,015,687) · · 1,015,687 Acquired
April 1, 2026 NTSK Class B Common Stock Class A Common Stock (561,475) · · 561,475 Disposed
Jan. 7, 2026 NTSK Class B Common Stock Class A Common Stock (31,594) · · 31,594 Disposed
Jan. 6, 2026 NTSK Class B Common Stock Class A Common Stock (178,482) · · 178,482 Disposed
Jan. 5, 2026 NTSK Class B Common Stock Class A Common Stock (175,707) · · 175,707 Disposed
Jan. 2, 2026 NTSK Class B Common Stock Class A Common Stock (346,061) · · 346,061 Disposed
Jan. 1, 2026 NTSK Restricted Stock Units Class B Common Stock (451,416) · · 451,416 Disposed
Jan. 1, 2026 NTSK Class B Common Stock Class A Common Stock (451,416) · · 451,416 Acquired
Dec. 31, 2025 NTSK Restricted Stock Units Class B Common Stock (451,417) · · 451,417 Disposed
Dec. 31, 2025 NTSK Restricted Stock Units Class B Common Stock (564,270) · · 564,270 Disposed
Dec. 31, 2025 NTSK Class B Common Stock Class A Common Stock (1,015,687) · · 1,015,687 Acquired
Dec. 31, 2025 NTSK Class B Common Stock Class A Common Stock (108,553) · · 108,553 Disposed
Dec. 22, 2025 NTSK Restricted Stock Units Class B Common Stock (5,950,880) · April 14, 2032 5,950,880 Disposed
Dec. 22, 2025 NTSK Restricted Stock Units Class B Common Stock (5,950,880) · · 5,950,880 Acquired
Sept. 19, 2025 NTSK Employee Stock Option (right to buy) Class B Common Stock (1,350,000) $1.49 Aug. 22, 2028 1,350,000 Acquired
Sept. 19, 2025 NTSK Employee Stock Option (right to buy) Common Stock [F1] (1,350,000) $1.49 Aug. 22, 2028 1,350,000 Disposed
Sept. 19, 2025 NTSK Employee Stock Option (right to buy) Class B Common Stock (1,088,680) $1.49 Aug. 22, 2028 1,088,680 Acquired
Sept. 19, 2025 NTSK Employee Stock Option (right to buy) Common Stock [F1] (1,088,680) $1.49 Aug. 22, 2028 1,088,680 Disposed
Sept. 19, 2025 NTSK Restricted Stock Units Class B Common Stock (9,028,328) · April 14, 2032 9,028,328 Acquired
Sept. 19, 2025 NTSK Restricted Stock Units Common Stock [F1] (9,028,328) · April 14, 2032 9,028,328 Disposed
Sept. 19, 2025 NTSK Restricted Stock Units Class B Common Stock (8,125,496) · · 8,125,496 Acquired
Sept. 19, 2025 NTSK Restricted Stock Units Common Stock [F1] (8,125,496) · · 8,125,496 Disposed
Sept. 19, 2025 NTSK Class B Common Stock Class A Common Stock (22,288,889) · · 22,288,889 Acquired
Sept. 19, 2025 NTSK Class B Common Stock Class A Common Stock (405,490) · · 405,490 Acquired
Sept. 17, 2025 NTSK Restricted Stock Units Common Stock [F1] (902,832) · · 902,832 Disposed

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

Initial ownership (Form 3) 5 holdings

07

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

DateTickerSecuritySharesOwnership
Sept. 17, 2025 NTSK Common Stock [F1] 22,288,889 Indirect
Sept. 17, 2025 NTSK Restricted Stock Units→ Common Stock [F1] (9,028,328) 9,028,328 Direct
Sept. 17, 2025 NTSK Restricted Stock Units→ Common Stock [F1] (9,028,328) 9,028,328 Direct
Sept. 17, 2025 NTSK Employee Stock Option (right to buy)→ Common Stock [F1] (1,088,680) 1,088,680 Direct
Sept. 17, 2025 NTSK Employee Stock Option (right to buy)→ Common Stock [F1] (1,350,000) 1,350,000 Direct