Carlos Mauricio Hernandez

Insider

First SEC filing: Sept. 14, 2023 · Latest: June 12, 2026

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

MKTX

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 26 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 18, 2026	MKTX	G	10,708	—	—	1,772 Indirect	-85.80%	Disposed	(price as of 2026-08-21)
June 18, 2026	MKTX	G	10,708	—	—	23,814 Direct	+81.70%	Acquired	(price as of 2026-08-21)
June 10, 2026	MKTX	A	2,616	—	—	13,106 Direct	+24.94%	Acquired	(price as of 2026-08-21)
Nov. 25, 2025	MKTX	G	7,466	—	—	10,490 Direct	+246.89%	Acquired	(price as of 2026-08-21)
Nov. 25, 2025	MKTX	G	7,466	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-21)
June 4, 2025	MKTX	A	1,475	—	—	3,024 Direct	+95.22%	Acquired	(price as of 2026-08-21)
March 20, 2025	MKTX	G	12,480	—	—	12,480 Indirect	—	Acquired	(price as of 2026-08-21)
March 20, 2025	MKTX	G	12,480	—	—	1,549 Direct	-88.96%	Disposed	(price as of 2026-08-21)
March 3, 2025	MKTX	G	12,480	—	—	14,029 Direct	+805.68%	Acquired	(price as of 2026-08-21)
March 3, 2025	MKTX	G	12,480	—	—	7,466 Indirect	-62.57%	Disposed	(price as of 2026-08-21)
Jan. 1, 2025	MKTX	A	275	—	—	1,549 Direct	+21.59%	Acquired	(price as of 2026-08-21)
June 5, 2024	MKTX	A	781	—	—	1,274 Direct	+158.42%	Acquired	(price as of 2026-08-21)
Nov. 20, 2023	MKTX	G	19,946	—	—	19,946 Indirect	—	Acquired	(price as of 2026-08-21)
Nov. 20, 2023	MKTX	G	19,946	—	—	493 Direct	-97.59%	Disposed	(price as of 2026-08-21)
Oct. 23, 2023	MKTX	A	493	—	—	20,439 Direct	+2.47%	Acquired	(price as of 2026-08-21)
Aug. 8, 2018	MKTX	A	598	—	—	20,479 Direct	+3.01%	Acquired	(price as of 2026-08-21)
Aug. 10, 2017	MKTX	A	518	—	—	19,881 Direct	+2.68%	Acquired	(price as of 2026-08-21)
Aug. 3, 2016	MKTX	A	636	—	—	19,363 Direct	+3.40%	Acquired	(price as of 2026-08-21)
Aug. 6, 2015	MKTX	A	972	—	—	18,727 Direct	+5.47%	Acquired	(price as of 2026-08-21)
Aug. 8, 2014	MKTX	A	1,604	—	—	17,755 Direct	+9.93%	Acquired	(price as of 2026-08-21)
July 26, 2013	MKTX	A	1,627	—	—	16,151 Direct	+11.20%	Acquired	(price as of 2026-08-21)
July 27, 2012	MKTX	A	2,553	—	—	14,524 Direct	+21.33%	Acquired	(price as of 2026-08-21)
July 29, 2011	MKTX	A	2,870	—	—	11,971 Direct	+31.53%	Acquired	(price as of 2026-08-21)
July 30, 2010	MKTX	A	4,923	—	—	9,101 Direct	+117.83%	Acquired	(price as of 2026-08-21)
July 30, 2009	MKTX	M	3,187	—	—	3,187 Direct	—	Acquired	(price as of 2026-08-21)
July 30, 2009	MKTX	A	4,178	—	—	4,178 Direct	—	Acquired	(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
July 30, 2009	MKTX	Employee Stock Option (right to buy)	Common Stock (3,187)	$10.77	July 30, 2019	3,187	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Sept. 14, 2023	MKTX	Common Stock, par value $0.003 per share	19,946	Direct