Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 7 non-open-market transactions below 12 months to the week close of 2026-10-23

Price change vs the latest weekly close (updated to the current quote in your browser when available), split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

7 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 1, 2004 NTCT S 4,240 $8.05 $34,132 93,259 Indirect -4.35% Disposed 392.8% (price as of )

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. 30, 2006 NTCT Directors Option Common (5,535) · · 5,535 Disposed
Sept. 14, 2005 NTCT Directors Option Common (5,535) · · 5,535 Acquired
Sept. 15, 2004 NTCT Directors Option Common (10,000) $5.67 Sept. 15, 2014 10,000 Acquired
Oct. 14, 2003 NTCT · Common Stock (10,000) $5.41 Oct. 14, 2013 10,000 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
March 2, 2026 MKTX Common Stock, par value $0.003 per share 296 Direct

Holdings reported on Form 4 19 reported holdings

08

Positions listed on each Form 4 without a transaction in that filing (Table I and II holdings), newest filing first.

DateTickerSecuritySharesExercise priceExpirationOwnership
Nov. 1, 2006 NTCT Common Stock 93,259 · · Indirect
Nov. 1, 2006 NTCT Common Stock 26,837 · · Indirect
Nov. 1, 2006 NTCT Directors Option→ Common (10,000) 10,000 $5.41 Oct. 14, 2013 Direct
Nov. 1, 2006 NTCT Directors Option→ Common (30,000) 30,000 $21.25 Sept. 22, 2012 Direct
Nov. 1, 2006 NTCT Directors Option→ Common (10,000) 10,000 $5.67 Sept. 15, 2014 Direct
Sept. 16, 2005 NTCT Common Stock 93,259 · · Indirect
Sept. 16, 2005 NTCT Common Stock 26,837 · · Indirect
Sept. 16, 2005 NTCT Common Stock 5,613 · · Direct
Sept. 16, 2005 NTCT Directors Option→ Common (10,000) 10,000 $5.41 Oct. 14, 2013 Direct
Sept. 16, 2005 NTCT Directors Option→ Common (30,000) 30,000 $21.25 Sept. 22, 2012 Direct
Sept. 16, 2005 NTCT Directors Option→ Common (10,000) 10,000 $5.67 Sept. 15, 2014 Direct
Sept. 17, 2004 NTCT Common Stock 93,259 · · Indirect
Sept. 17, 2004 NTCT Common Stock 26,837 · · Indirect
Sept. 17, 2004 NTCT Common Stock 5,613 · · Direct
Sept. 17, 2004 NTCT Directors Option→ Common (10,000) 10,000 $5.41 Oct. 14, 2013 Direct
Sept. 17, 2004 NTCT Directors Option→ Common (30,000) 30,000 $21.25 Sept. 22, 2012 Direct
March 3, 2004 NTCT Common Stock 26,837 · · Indirect
March 3, 2004 NTCT Common Stock 5,613 · · Direct
March 3, 2004 NTCT Directors Option→ Common Stock (10,000) 10,000 $5.41 Oct. 14, 2013 Direct