Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 3 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

3 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Nov. 7, 2006 MKTX S 800 $13.00 $10,400 6,200 Direct -11.43% Disposed 1161.8% (price as of 2026-10-05)
Nov. 6, 2006 MKTX S 3,900 $12.40 $48,360 7,000 Direct -35.78% Disposed 1222.9% (price as of 2026-10-05)
Nov. 2, 2006 MKTX S 1,100 $12.40 $13,640 10,900 Direct -9.17% Disposed 1222.9% (price as of 2026-10-05)
Nov. 2, 2006 MKTX S 5,000 $11.92 $59,600 12,000 Direct -29.41% Disposed 1276.2% (price as of 2026-10-05)
May 25, 2006 MKTX P 4,200 $10.49 $44,058 55,000 Direct +8.27% Acquired 1463.8% (price as of 2026-10-05)
May 25, 2006 MKTX P 5,000 $10.48 $52,400 50,800 Direct +10.92% Acquired 1465.3% (price as of 2026-10-05)
May 25, 2006 MKTX P 5,000 $10.58 $52,900 45,800 Direct +12.25% Acquired 1450.5% (price as of 2026-10-05)
May 25, 2006 MKTX P 800 $10.59 $8,472 40,800 Direct +2.00% Acquired 1449.0% (price as of 2026-10-05)
Aug. 23, 2005 MKTX P 1,000 $10.15 $10,150 1,000 Indirect · Acquired 1516.2% (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
Jan. 9, 2006 MKTX Employee Stock Option (right to buy) Common Stock (50,000) $11.18 Jan. 9, 2016 50,000 Acquired

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

Initial ownership (Form 3) 3 holdings

07

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

DateTickerSecuritySharesOwnership
Feb. 18, 2005 MKTX Common Stock, par value $0.003 per share 10,000 Direct
Feb. 18, 2005 MKTX Employee Stock Option (right to buy)→ Common Stock, par value $0.003 per share (225,000) 225,000 Direct
Feb. 18, 2005 MKTX Employee Stock Option (right to buy)→ Common Stock, par value $0.003 per share (40,000) 40,000 Direct