Donald A. Mccunniff

Insider

First SEC filing: Sept. 4, 2024 · Latest: Sept. 4, 2024

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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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 65 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

65 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 1, 2026	MLM	A	2,960	—	—	7,518 Direct	+64.94%	Acquired	(price as of 2026-08-20)
Feb. 23, 2026	MLM	F	192	$683.60	$131,251	4,558 Direct	-4.04%	Disposed	-22.9% (price as of 2026-08-20)
Feb. 20, 2026	MLM	A	1,277	—	—	4,750 Direct	+36.77%	Acquired	(price as of 2026-08-20)
Dec. 16, 2025	MLM	F	50	$629.49	$31,474	3,473 Direct	-1.42%	Disposed	-16.3% (price as of 2026-08-20)
March 5, 2025	MLM	M	1,332	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 5, 2025	MLM	S	1,332	$475.00	$632,700	3,523 Direct	-27.44%	Disposed	10.9% (price as of 2026-08-20)
March 5, 2025	MLM	M	1,332	$154.58	$205,901	4,855 Direct	+37.81%	Acquired	240.8% (price as of 2026-08-20)
Feb. 21, 2025	MLM	A	1,543	—	—	3,523 Direct	+77.93%	Acquired	(price as of 2026-08-20)
May 6, 2019	MLM	M	3,226	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 6, 2019	MLM	S	3,183	$220.19	$700,865	12,803 Direct	-19.91%	Disposed	139.3% (price as of 2026-08-20)
May 6, 2019	MLM	F	738	$221.44	$163,423	15,986 Direct	-4.41%	Disposed	137.9% (price as of 2026-08-20)
May 6, 2019	MLM	M	3,226	—	—	16,724 Direct	+23.90%	Acquired	(price as of 2026-08-20)
March 28, 2019	MLM	F	288	$197.91	$56,998	13,498 Direct	-2.09%	Disposed	166.2% (price as of 2026-08-20)
Feb. 28, 2019	MLM	S	1,563	$189.31	$295,892	13,786 Direct	-10.18%	Disposed	178.3% (price as of 2026-08-20)
Feb. 27, 2019	MLM	S	660	$190.90	$125,994	15,349 Direct	-4.12%	Disposed	176.0% (price as of 2026-08-20)
Feb. 22, 2019	MLM	F	118	$190.00	$22,420	16,009 Direct	-0.73%	Disposed	177.3% (price as of 2026-08-20)
Feb. 20, 2019	MLM	F	657	$192.27	$126,321	16,127 Direct	-3.91%	Disposed	174.0% (price as of 2026-08-20)
Feb. 20, 2019	MLM	A	2,220	—	—	16,784 Direct	+15.24%	Acquired	(price as of 2026-08-20)
Feb. 20, 2019	MLM	A	1,624	—	—	14,564 Direct	+12.55%	Acquired	(price as of 2026-08-20)
Feb. 20, 2019	MLM	A	602	$153.82	$92,600	12,940 Direct	+4.88%	Acquired	242.5% (price as of 2026-08-20)
Feb. 4, 2019	MLM	F	172	$185.96	$31,985	12,338 Direct	-1.37%	Disposed	183.3% (price as of 2026-08-20)
Dec. 3, 2018	MLM	F	139	$194.39	$27,020	12,510 Direct	-1.10%	Disposed	171.0% (price as of 2026-08-20)
Nov. 9, 2018	MLM	M	1,818	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 9, 2018	MLM	S	1,476	$185.50	$273,798	12,649 Direct	-10.45%	Disposed	184.0% (price as of 2026-08-20)
Nov. 9, 2018	MLM	F	342	$188.38	$64,426	14,125 Direct	-2.36%	Disposed	179.7% (price as of 2026-08-20)
Nov. 9, 2018	MLM	M	1,818	—	—	14,467 Direct	+14.37%	Acquired	(price as of 2026-08-20)
Aug. 22, 2018	MLM	S	2,250	$204.33	$459,742	12,649 Direct	-15.10%	Disposed	157.8% (price as of 2026-08-20)
June 13, 2018	MLM	S	4,226	$230.72	$975,023	14,899 Direct	-22.10%	Disposed	128.3% (price as of 2026-08-20)
May 21, 2018	MLM	F	399	$217.82	$86,910	19,125 Direct	-2.04%	Disposed	141.9% (price as of 2026-08-20)
March 28, 2018	MLM	F	213	$201.79	$42,981	19,524 Direct	-1.08%	Disposed	161.1% (price as of 2026-08-20)
Feb. 22, 2018	MLM	F	375	$212.12	$79,545	19,737 Direct	-1.86%	Disposed	148.4% (price as of 2026-08-20)
Feb. 22, 2018	MLM	A	1,259	—	—	20,112 Direct	+6.68%	Acquired	(price as of 2026-08-20)
Feb. 22, 2018	MLM	A	1,178	—	—	18,853 Direct	+6.66%	Acquired	(price as of 2026-08-20)
Feb. 22, 2018	MLM	A	474	$169.70	$80,438	17,675 Direct	+2.76%	Acquired	210.4% (price as of 2026-08-20)
Feb. 5, 2018	MLM	F	171	$209.10	$35,756	17,201 Direct	-0.98%	Disposed	152.0% (price as of 2026-08-20)
Dec. 1, 2017	MLM	F	168	$202.65	$34,045	17,372 Direct	-0.96%	Disposed	160.0% (price as of 2026-08-20)
May 22, 2017	MLM	F	499	$231.77	$115,653	17,540 Direct	-2.77%	Disposed	127.3% (price as of 2026-08-20)
May 4, 2017	MLM	M	1,819	—	—	1,818 Direct	-50.01%	Disposed	(price as of 2026-08-20)
May 4, 2017	MLM	S	1,391	$240.17	$334,076	18,039 Direct	-7.16%	Disposed	119.4% (price as of 2026-08-20)
May 4, 2017	MLM	F	428	$238.97	$102,279	19,430 Direct	-2.16%	Disposed	120.5% (price as of 2026-08-20)
May 4, 2017	MLM	M	1,819	—	—	19,858 Direct	+10.08%	Acquired	(price as of 2026-08-20)
March 28, 2017	MLM	A	2,122	—	—	18,039 Direct	+13.33%	Acquired	(price as of 2026-08-20)
Feb. 23, 2017	MLM	F	386	$218.94	$84,511	15,917 Direct	-2.37%	Disposed	140.6% (price as of 2026-08-20)
Feb. 23, 2017	MLM	A	1,170	—	—	16,303 Direct	+7.73%	Acquired	(price as of 2026-08-20)
Feb. 23, 2017	MLM	A	485	$166.94	$80,966	15,133 Direct	+3.31%	Acquired	215.6% (price as of 2026-08-20)
Feb. 4, 2017	MLM	F	184	$230.58	$42,427	14,648 Direct	-1.24%	Disposed	128.5% (price as of 2026-08-20)
Dec. 9, 2016	MLM	S	1,503	$228.98	$344,157	14,832 Direct	-9.20%	Disposed	130.1% (price as of 2026-08-20)
Dec. 1, 2016	MLM	F	144	$220.90	$31,810	16,335 Direct	-0.87%	Disposed	138.5% (price as of 2026-08-20)
May 23, 2016	MLM	F	534	$188.79	$100,814	16,479 Direct	-3.14%	Disposed	179.1% (price as of 2026-08-20)
Feb. 4, 2016	MLM	A	481	$99.53	$47,874	15,542 Direct	+3.19%	Acquired	429.3% (price as of 2026-08-20)
Feb. 4, 2016	MLM	A	1,471	—	—	17,013 Direct	+9.46%	Acquired	(price as of 2026-08-20)
Dec. 1, 2015	MLM	F	136	$159.34	$21,670	15,061 Direct	-0.89%	Disposed	230.6% (price as of 2026-08-20)
May 24, 2015	MLM	F	603	$151.15	$91,143	15,197 Direct	-3.82%	Disposed	248.5% (price as of 2026-08-20)
May 21, 2015	MLM	A	2,663	—	—	2,663 Direct	—	Acquired	(price as of 2026-08-20)
May 21, 2015	MLM	A	1,332	—	—	15,800 Direct	+9.21%	Acquired	(price as of 2026-08-20)
Jan. 20, 2015	MLM	A	525	$86.82	$45,580	14,468 Direct	+3.77%	Acquired	506.8% (price as of 2026-08-20)
Aug. 21, 2014	MLM	A	8,127	—	—	13,943 Direct	+139.74%	Acquired	(price as of 2026-08-20)
May 22, 2014	MLM	A	3,027	—	—	3,027 Direct	—	Acquired	(price as of 2026-08-20)
May 22, 2014	MLM	A	1,514	—	—	5,816 Direct	+35.19%	Acquired	(price as of 2026-08-20)
Jan. 23, 2014	MLM	A	447	$87.34	$39,041	4,302 Direct	+11.60%	Acquired	503.2% (price as of 2026-08-20)
May 23, 2013	MLM	A	3,226	—	—	3,226 Direct	—	Acquired	(price as of 2026-08-20)
May 23, 2013	MLM	A	1,613	—	—	3,855 Direct	+71.94%	Acquired	(price as of 2026-08-20)
May 23, 2013	MLM	A	3,226	—	—	3,226 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 24, 2013	MLM	A	423	$79.38	$33,578	2,242 Direct	+23.25%	Acquired	563.7% (price as of 2026-08-20)
May 24, 2012	MLM	A	3,637	—	—	3,637 Direct	—	Acquired	(price as of 2026-08-20)
May 24, 2012	MLM	A	1,819	—	—	1,819 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 31, 2009	AWI	D	27,137	—	—	6,377 Direct	-80.97%	Disposed	(price as of 2026-08-20)
Feb. 23, 2009	AWI	A	32,876	—	—	32,876 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 23, 2009	AWI	A	8,737	—	—	33,514 Direct	+35.26%	Acquired	(price as of 2026-08-20)
Oct. 2, 2008	AWI	F	2,823	$28.85	$81,444	24,777 Direct	-10.23%	Disposed	510.7% (price as of 2026-08-20)
Oct. 2, 2008	AWI	F	3,743	$28.85	$107,986	23,857 Direct	-13.56%	Disposed	510.7% (price as of 2026-08-20)
March 11, 2008	AWI	J	4,256	—	—	87,056 Direct	-4.66%	Disposed	(price as of 2026-08-20)
Oct. 31, 2006	AWI	A	82,800	—	—	82,800 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 31, 2006	AWI	A	27,600	—	—	27,600 Direct	—	Acquired	(price as of 2026-08-20)

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 5, 2025	MLM	Stock Options (Right to Buy)	Common Stock (1,332)	$154.58	May 21, 2025	1,332	Disposed
May 6, 2019	MLM	Stock Options (Right to Buy)	Common Stock (3,226)	$108.24	May 23, 2023	3,226	Disposed
Nov. 9, 2018	MLM	Stock Options (Right to Buy)	Common Stock (1,818)	$69.12	May 24, 2020	1,818	Disposed
May 4, 2017	MLM	Stock Options (Right to Buy)	Common Stock (1,819)	$69.12	May 24, 2020	1,819	Disposed
May 21, 2015	MLM	Stock Options (Right to Buy)	Common Stock (2,663)	$154.58	May 21, 2025	2,663	Acquired
May 22, 2014	MLM	Stock Options (Right to Buy)	Common Stock (3,027)	$121.00	May 22, 2024	3,027	Acquired
May 23, 2013	MLM	Stock Options (Right to Buy)	Common Stock (3,226)	$108.24	May 23, 2023	3,226	Acquired
May 23, 2013	MLM	Stock Options (Right to Buy)	Common Stock (3,226)	$108.24	May 23, 2023	3,226	Acquired
May 24, 2012	MLM	Stock Options (Right to Buy)	Common Stock (3,637)	$69.12	May 24, 2020	3,637	Acquired
Feb. 23, 2009	AWI	Stock Options (right to buy)	common stock (32,876)	$13.46	—	32,876	Acquired
March 11, 2008	AWI	Stock Option (right to buy)	Common Stock	$29.37	Oct. 2, 2016	4,256	Disposed
Oct. 31, 2006	AWI	Stock Options (right to buy)	Common Stock (82,800)	$38.42	—	82,800	Acquired

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

Initial ownership (Form 3) 3 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 4, 2024	MLM	Common Stock	1,980	Direct
Sept. 4, 2024	MLM	Stock Options (Right to Buy)→ Common Stock (1,332)	1,332	Direct
Feb. 1, 2012	MLM	No Securities Owned	0	Direct

Compensation (DEF 14A)

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

MLM

President, Human Resources

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2018	$413,133	—	$643,874	—	$370,167	$271,632	$52,144	$1,750,950
2017	$382,250	—	$1,044,225	—	$321,090	$292,574	$51,251	$2,091,390
2016	$370,050	$323,276	$629,840	—	—	$160,803	$71,038	$1,555,007

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