Young-Joon Kim

Insider

First SEC filing: Feb. 23, 2021 · Latest: Feb. 23, 2021

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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

MX buying March 8, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 43 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

43 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 1, 2025	MX	A	164,269	—	—	164,269 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2025	MX	A	164,269	—	—	590,970 Direct	+38.50%	Acquired	(price as of 2026-08-21)
Dec. 31, 2024	MX	F	15,517	$4.02	$62,378	619,757 Direct	-2.44%	Disposed	-17.4% (price as of 2026-08-21)
Dec. 31, 2024	MX	F	17,632	$4.02	$70,881	635,274 Direct	-2.70%	Disposed	-17.4% (price as of 2026-08-21)
Dec. 31, 2024	MX	F	5,017	$4.02	$20,168	652,906 Direct	-0.76%	Disposed	-17.4% (price as of 2026-08-21)
June 1, 2024	MX	A	267,000	—	—	267,000 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2024	MX	A	133,000	—	—	657,923 Direct	+25.34%	Acquired	(price as of 2026-08-21)
March 8, 2024	MX	P	17,826	$5.61	$100,004	524,923 Direct	+3.52%	Acquired	-40.8% (price as of 2026-08-21)
Dec. 31, 2023	MX	F	17,632	$7.50	$132,240	507,097 Direct	-3.36%	Disposed	-55.7% (price as of 2026-08-21)
Dec. 31, 2023	MX	F	5,017	$7.50	$37,628	524,729 Direct	-0.95%	Disposed	-55.7% (price as of 2026-08-21)
Dec. 31, 2023	MX	F	3,413	$7.50	$25,598	529,746 Direct	-0.64%	Disposed	-55.7% (price as of 2026-08-21)
Aug. 14, 2023	MX	P	10,888	$8.36	$91,024	533,159 Direct	+2.08%	Acquired	-60.3% (price as of 2026-08-21)
Feb. 16, 2023	MX	A	151,126	—	—	522,271 Direct	+40.72%	Acquired	(price as of 2026-08-21)
Dec. 31, 2022	MX	F	5,304	$9.39	$49,805	371,145 Direct	-1.41%	Disposed	-64.6% (price as of 2026-08-21)
Dec. 31, 2022	MX	F	3,608	$9.39	$33,879	376,449 Direct	-0.95%	Disposed	-64.6% (price as of 2026-08-21)
Dec. 31, 2022	MX	F	4,010	$9.39	$37,654	380,057 Direct	-1.04%	Disposed	-64.6% (price as of 2026-08-21)
Feb. 28, 2022	MX	A	43,000	—	—	384,067 Direct	+12.61%	Acquired	(price as of 2026-08-21)
Feb. 24, 2022	MX	P	5,460	$17.37	$94,840	341,067 Direct	+1.63%	Acquired	-80.9% (price as of 2026-08-21)
Feb. 18, 2022	MX	F	7,069	$18.78	$132,756	335,607 Direct	-2.06%	Disposed	-82.3% (price as of 2026-08-21)
Feb. 18, 2022	MX	A	19,104	—	—	342,676 Direct	+5.90%	Acquired	(price as of 2026-08-21)
Feb. 18, 2022	MX	F	19,759	$18.78	$371,074	323,572 Direct	-5.76%	Disposed	-82.3% (price as of 2026-08-21)
Feb. 18, 2022	MX	A	53,402	—	—	343,331 Direct	+18.42%	Acquired	(price as of 2026-08-21)
Dec. 31, 2021	MX	F	3,607	$20.97	$75,639	289,929 Direct	-1.23%	Disposed	-84.2% (price as of 2026-08-21)
Dec. 31, 2021	MX	F	4,010	$20.97	$84,090	293,536 Direct	-1.35%	Disposed	-84.2% (price as of 2026-08-21)
Feb. 19, 2021	MX	A	29,246	—	—	297,546 Direct	+10.90%	Acquired	(price as of 2026-08-21)
Feb. 16, 2021	MX	F	25,323	$19.86	$502,915	268,300 Direct	-8.62%	Disposed	-83.3% (price as of 2026-08-21)
Feb. 16, 2021	MX	A	68,438	—	—	293,623 Direct	+30.39%	Acquired	(price as of 2026-08-21)
Dec. 31, 2020	MX	F	4,009	$13.52	$54,202	225,185 Direct	-1.75%	Disposed	-75.4% (price as of 2026-08-21)
Dec. 31, 2020	MX	F	8,954	$13.52	$121,058	229,194 Direct	-3.76%	Disposed	-75.4% (price as of 2026-08-21)
Aug. 3, 2020	MX	P	10,000	$11.49	$114,900	238,148 Direct	+4.38%	Acquired	-71.1% (price as of 2026-08-21)
May 7, 2020	MX	A	32,507	—	—	228,148 Direct	+16.62%	Acquired	(price as of 2026-08-21)
Feb. 27, 2020	MX	F	21,875	$11.41	$249,594	195,641 Direct	-10.06%	Disposed	-70.9% (price as of 2026-08-21)
Feb. 27, 2020	MX	A	59,119	—	—	217,516 Direct	+37.32%	Acquired	(price as of 2026-08-21)
Dec. 31, 2019	MX	F	8,766	$11.61	$101,773	158,397 Direct	-5.24%	Disposed	-71.4% (price as of 2026-08-21)
March 11, 2019	MX	F	3,479	$7.52	$26,162	167,163 Direct	-2.04%	Disposed	-55.9% (price as of 2026-08-21)
March 8, 2019	MX	F	12,442	$7.51	$93,439	170,642 Direct	-6.80%	Disposed	-55.8% (price as of 2026-08-21)
March 8, 2019	MX	A	28,170	—	—	183,084 Direct	+18.18%	Acquired	(price as of 2026-08-21)
Dec. 31, 2018	MX	F	5,735	$6.21	$35,614	154,914 Direct	-3.57%	Disposed	-46.5% (price as of 2026-08-21)
June 30, 2018	MX	F	19,432	$10.25	$199,178	160,649 Direct	-10.79%	Disposed	-67.6% (price as of 2026-08-21)
April 30, 2018	MX	A	112,118	—	—	180,081 Direct	+164.97%	Acquired	(price as of 2026-08-21)
Feb. 12, 2018	MX	P	8,888	$9.15	$81,325	67,963 Direct	+15.05%	Acquired	-63.7% (price as of 2026-08-21)
May 4, 2017	MX	S 10b5-1	11,800	$8.90	$105,020	59,075 Direct	-16.65%	Disposed	-62.7% (price as of 2026-08-21)
March 11, 2016	MX	A	45,305	—	—	45,305 Direct	—	Acquired	(price as of 2026-08-21)
March 11, 2016	MX	A	23,625	—	—	70,875 Direct	+50.00%	Acquired	(price as of 2026-08-21)
June 9, 2015	MX	A	45,305	—	—	45,305 Direct	—	Acquired	(price as of 2026-08-21)
June 9, 2015	MX	A	45,305	—	—	45,305 Direct	—	Acquired	(price as of 2026-08-21)
June 9, 2015	MX	A	23,625	—	—	47,250 Direct	+100.00%	Acquired	(price as of 2026-08-21)
June 9, 2015	MX	A	23,625	—	—	23,625 Direct	—	Acquired	(price as of 2026-08-21)
May 6, 2013	MX	A	200,000	—	—	200,000 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
June 1, 2025	MX	Performance-Based Restricted Stock Units	Common Stock (164,269)	—	Jan. 31, 2028	164,269	Acquired
June 1, 2024	MX	Performance-Based Restricted Stock Units	Common Stock (267,000)	—	Jan. 31, 2027	267,000	Acquired
March 11, 2016	MX	Stock Option (Right to Buy)	Common Stock (45,305)	$5.53	March 11, 2026	45,305	Acquired
June 9, 2015	MX	Stock Option (Right to Buy)	Common Stock (45,305)	$7.64	June 9, 2025	45,305	Acquired
June 9, 2015	MX	Stock Option (Right to Buy)	Common Stock (45,305)	$7.64	June 9, 2025	45,305	Acquired
May 6, 2013	MX	Stock Option (Right to Buy)	Common Stock (200,000)	$15.96	May 5, 2023	200,000	Acquired

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

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

MX

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$302,024	—	—	—	—	$8,053	$1,420,869	$3,509,979
2023	$502,819	$1,011	—	—	—	$35,335	$1,486,477	$5,911,543
2022	$560,420	$605,538	—	—	—	$100,280	$1,565,327	$7,043,045

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.