Wah-Hui Chu

Insider

First SEC filing: Jan. 3, 2007 · Latest: Feb. 4, 2020

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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

MTD selling March 2, 2023

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 34 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

34 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 2, 2023	MTD	M	300	—	—	600 Direct	-33.33%	Disposed	(price as of 2026-08-21)
March 2, 2023	MTD	S	300	$1450.00	$435,000	4,290 Direct	-6.54%	Disposed	-4.0% (price as of 2026-08-21)
March 2, 2023	MTD	M	300	$244.99	$73,497	4,590 Direct	+6.99%	Acquired	468.2% (price as of 2026-08-21)
Nov. 10, 2022	MTD	M	584	—	—	900 Direct	-39.35%	Disposed	(price as of 2026-08-21)
Nov. 10, 2022	MTD	S	584	$1398.94	$816,981	4,290 Direct	-11.98%	Disposed	-0.5% (price as of 2026-08-21)
Nov. 10, 2022	MTD	M	584	$244.99	$143,074	4,874 Direct	+13.61%	Acquired	468.2% (price as of 2026-08-21)
Aug. 17, 2022	MTD	M	200	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 17, 2022	MTD	S	37	$1346.64	$49,826	4,290 Direct	-0.86%	Disposed	3.4% (price as of 2026-08-21)
Aug. 17, 2022	MTD	M	200	$169.37	$33,874	4,327 Direct	+4.85%	Acquired	721.9% (price as of 2026-08-21)
Aug. 12, 2022	MTD	M	200	—	—	200 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Aug. 12, 2022	MTD	S	37	$1353.96	$50,097	4,127 Direct	-0.89%	Disposed	2.8% (price as of 2026-08-21)
Aug. 12, 2022	MTD	M	200	$169.37	$33,874	4,164 Direct	+5.05%	Acquired	721.9% (price as of 2026-08-21)
Aug. 2, 2022	MTD	M	300	—	—	400 Direct	-42.86%	Disposed	(price as of 2026-08-21)
Aug. 2, 2022	MTD	S	55	$1352.09	$74,365	3,964 Direct	-1.37%	Disposed	3.0% (price as of 2026-08-21)
Aug. 2, 2022	MTD	M	300	$169.37	$50,811	4,019 Direct	+8.07%	Acquired	721.9% (price as of 2026-08-21)
May 27, 2022	MTD	M	300	—	—	700 Direct	-30.00%	Disposed	(price as of 2026-08-21)
May 27, 2022	MTD	S	56	$1308.00	$73,248	3,719 Direct	-1.48%	Disposed	6.4% (price as of 2026-08-21)
May 27, 2022	MTD	M	300	$169.37	$50,811	3,775 Direct	+8.63%	Acquired	721.9% (price as of 2026-08-21)
May 19, 2022	MTD	M	500	—	—	1,000 Direct	-33.33%	Disposed	(price as of 2026-08-21)
May 19, 2022	MTD	S	100	$1228.00	$122,800	3,475 Direct	-2.80%	Disposed	13.4% (price as of 2026-08-21)
May 19, 2022	MTD	M	500	$169.37	$84,685	3,575 Direct	+16.26%	Acquired	721.9% (price as of 2026-08-21)
May 13, 2022	MTD	M	300	—	—	1,500 Direct	-16.67%	Disposed	(price as of 2026-08-21)
May 13, 2022	MTD	S	300	$1268.00	$380,400	3,075 Direct	-8.89%	Disposed	9.8% (price as of 2026-08-21)
May 13, 2022	MTD	M	300	$169.37	$50,811	3,375 Direct	+9.76%	Acquired	721.9% (price as of 2026-08-21)
May 12, 2022	MTD	M	308	—	—	1,800 Direct	-14.61%	Disposed	(price as of 2026-08-21)
May 12, 2022	MTD	S	64	$1208.00	$77,312	3,075 Direct	-2.04%	Disposed	15.2% (price as of 2026-08-21)
May 12, 2022	MTD	M	308	$169.37	$52,166	3,139 Direct	+10.88%	Acquired	721.9% (price as of 2026-08-21)
Nov. 4, 2021	MTD	A	222	—	—	222 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 4, 2021	MTD	A	30	—	—	2,831 Direct	+1.07%	Acquired	(price as of 2026-08-21)
Aug. 13, 2021	MTD	M	400	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 13, 2021	MTD	S	60	$1528.00	$91,680	2,801 Direct	-2.10%	Disposed	-8.9% (price as of 2026-08-21)
Aug. 13, 2021	MTD	M	400	$149.95	$59,980	2,861 Direct	+16.25%	Acquired	828.4% (price as of 2026-08-21)
Aug. 5, 2021	MTD	M	300	—	—	400 Direct	-42.86%	Disposed	(price as of 2026-08-21)
Aug. 5, 2021	MTD	S	45	$1528.00	$68,760	2,461 Direct	-1.80%	Disposed	-8.9% (price as of 2026-08-21)
Aug. 5, 2021	MTD	M	300	$149.95	$44,985	2,506 Direct	+13.60%	Acquired	828.4% (price as of 2026-08-21)
Nov. 3, 2010	MTD	A	180	—	—	1,626 Direct	+12.45%	Acquired	(price as of 2026-08-21)
Nov. 3, 2010	MTD	A	2,600	—	—	2,600 Direct	—	Acquired	(price as of 2026-08-21)
Oct. 28, 2009	MTD	A	246	—	—	1,446 Direct	+20.50%	Acquired	(price as of 2026-08-21)
Oct. 28, 2009	MTD	A	3,384	—	—	3,384 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 6, 2008	MTD	A	300	—	—	1,200 Direct	+33.33%	Acquired	(price as of 2026-08-21)
Nov. 6, 2008	MTD	A	4,700	—	—	4,700 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 1, 2007	MTD	A	200	—	—	900 Direct	+28.57%	Acquired	(price as of 2026-08-21)
Nov. 1, 2007	MTD	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 22, 2007	MTD	A	200	—	—	700 Direct	+40.00%	Acquired	(price as of 2026-08-21)
Feb. 22, 2007	MTD	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 12, 2007	MTD	P	500	$87.65	$43,825	500 Direct	—	Acquired	1488.2% (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
March 2, 2023	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (300)	$244.99	Nov. 7, 2023	300	Disposed
Nov. 10, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (584)	$244.99	Nov. 7, 2023	584	Disposed
Aug. 17, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (200)	$169.37	Oct. 31, 2022	200	Disposed
Aug. 12, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (200)	$169.37	Oct. 31, 2022	200	Disposed
Aug. 2, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (300)	$169.37	Oct. 31, 2022	300	Disposed
May 27, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (300)	$169.37	Oct. 31, 2022	300	Disposed
May 19, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (500)	$169.37	Oct. 31, 2022	500	Disposed
May 13, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (300)	$169.37	Oct. 31, 2022	300	Disposed
May 12, 2022	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (308)	$169.37	Oct. 31, 2022	308	Disposed
Nov. 4, 2021	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (222)	$1484.40	Nov. 4, 2031	222	Acquired
Aug. 13, 2021	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (400)	$149.95	Nov. 2, 2021	400	Disposed
Aug. 5, 2021	MTD	Stock Option (right to buy)	Common Stock, par value $0.01 per share (300)	$149.95	Nov. 2, 2021	300	Disposed
Nov. 3, 2010	MTD	Stock Option (right to buy)	Common stock, par value $0.01 per share (2,600)	$133.00	Nov. 3, 2020	2,600	Acquired
Oct. 28, 2009	MTD	Stock Option (right to buy)	Common stock, par value $0.01 per share (3,384)	$90.76	Oct. 28, 2019	3,384	Acquired
Nov. 6, 2008	MTD	Stock Option (right to buy)	Common stock, par value $0.01 per share (4,700)	$73.69	Nov. 6, 2015	4,700	Acquired
Nov. 1, 2007	MTD	Stock Option (right to buy)	Common stock, par value $0.01 per share (3,000)	$105.11	Nov. 1, 2017	3,000	Acquired
Feb. 22, 2007	MTD	Stock option (right to buy)	Common stock, par value $0.01 per share (3,000)	$90.17	Feb. 22, 2017	3,000	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
Jan. 3, 2007	MTD	No securities owned	0	Direct