Mark A Alexander

Insider

First SEC filing: June 2, 2026 · Latest: June 2, 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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 51 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

51 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 1, 2026	BLDR	A	409	$76.26	$31,190	47,913 Direct	+0.86%	Acquired	-5.8% (price as of 2026-08-19)
May 14, 2026	BLDR	A	2,558	—	—	47,504 Direct	+5.69%	Acquired	(price as of 2026-08-19)
March 1, 2026	BLDR	A	299	$104.29	$31,183	44,946 Direct	+0.67%	Acquired	-31.1% (price as of 2026-08-19)
Dec. 1, 2025	BLDR	A	278	$112.23	$31,200	44,647 Direct	+0.63%	Acquired	-36.0% (price as of 2026-08-19)
Oct. 1, 2025	WPC	A	438	$68.47	$29,990	51,095 Direct	+0.86%	Acquired	4.6% (price as of 2026-08-19)
Sept. 1, 2025	BLDR	A	225	$138.68	$31,203	44,369 Direct	+0.51%	Acquired	-48.2% (price as of 2026-08-19)
July 1, 2025	WPC	A	476	$62.99	$29,983	50,399 Direct	+0.95%	Acquired	13.7% (price as of 2026-08-19)
July 1, 2025	WPC	A	2,778	—	—	49,923 Direct	+5.89%	Acquired	(price as of 2026-08-19)
June 1, 2025	BLDR	A	290	$107.68	$31,227	44,144 Direct	+0.66%	Acquired	-33.3% (price as of 2026-08-19)
May 27, 2025	BLDR	A	1,707	—	—	43,854 Direct	+4.05%	Acquired	(price as of 2026-08-19)
April 1, 2025	WPC	A	475	$63.03	$29,939	47,145 Direct	+1.02%	Acquired	13.6% (price as of 2026-08-19)
March 1, 2025	BLDR	A	224	$138.99	$31,134	42,147 Direct	+0.53%	Acquired	-48.3% (price as of 2026-08-19)
Feb. 28, 2025	BLDR	A	224	$138.99	$31,134	42,147 Direct	+0.53%	Acquired	-48.3% (price as of 2026-08-19)
Jan. 2, 2025	WPC	A	552	$54.29	$29,968	46,402 Direct	+1.20%	Acquired	31.9% (price as of 2026-08-19)
Dec. 1, 2024	BLDR	A	167	$186.47	$31,140	41,923 Direct	+0.40%	Acquired	-61.5% (price as of 2026-08-19)
Nov. 1, 2024	WPC	P	5,000	$55.29	$276,450	45,850 Direct	+12.24%	Acquired	29.5% (price as of 2026-08-19)
Oct. 1, 2024	WPC	A	489	$61.32	$29,985	40,613 Direct	+1.22%	Acquired	16.8% (price as of 2026-08-19)
Sept. 1, 2024	BLDR	A	179	$174.00	$31,146	41,756 Direct	+0.43%	Acquired	-58.7% (price as of 2026-08-19)
Aug. 16, 2024	WPC	P	2,000	$57.03	$114,060	40,124 Direct	+5.25%	Acquired	25.6% (price as of 2026-08-19)
Aug. 9, 2024	WPC	P	3,500	$55.87	$195,545	38,124 Direct	+10.11%	Acquired	28.2% (price as of 2026-08-19)
July 1, 2024	WPC	A	663	$54.63	$36,220	34,435 Direct	+1.96%	Acquired	31.1% (price as of 2026-08-19)
July 1, 2024	WPC	A	3,203	—	—	33,772 Direct	+10.48%	Acquired	(price as of 2026-08-19)
June 4, 2024	BLDR	A	1,194	—	—	41,577 Direct	+2.96%	Acquired	(price as of 2026-08-19)
June 1, 2024	BLDR	A	194	$160.79	$31,193	40,383 Direct	+0.48%	Acquired	-55.3% (price as of 2026-08-19)
April 5, 2024	WPC	A	655	$55.27	$36,202	30,382 Direct	+2.20%	Acquired	29.6% (price as of 2026-08-19)
March 1, 2024	BLDR	A	156	$199.98	$31,197	40,189 Direct	+0.39%	Acquired	-64.1% (price as of 2026-08-19)
Jan. 5, 2024	WPC	J	558	$64.85	$36,186	29,584 Direct	+1.92%	Acquired	10.4% (price as of 2026-08-19)
Dec. 1, 2023	BLDR	A	224	$139.28	$31,199	40,033 Direct	+0.56%	Acquired	-48.4% (price as of 2026-08-19)
Sept. 1, 2023	BLDR	A	210	$148.74	$31,235	39,809 Direct	+0.53%	Acquired	-51.7% (price as of 2026-08-19)
July 3, 2023	WPC	A	2,553	—	—	28,671 Direct	+9.77%	Acquired	(price as of 2026-08-19)
June 14, 2023	BLDR	A	1,446	—	—	39,599 Direct	+3.79%	Acquired	(price as of 2026-08-19)
June 1, 2023	BLDR	A	269	$115.86	$31,166	38,153 Direct	+0.71%	Acquired	-38.0% (price as of 2026-08-19)
May 2, 2023	WPC	P	1,000	$72.48	$72,480	26,118 Direct	+3.98%	Acquired	0.9% (price as of 2026-08-19)
March 1, 2023	BLDR	A	306	$85.76	$26,243	37,884 Direct	+0.81%	Acquired	-16.2% (price as of 2026-08-19)
Dec. 1, 2022	BLDR	A	411	$63.73	$26,193	37,578 Direct	+1.11%	Acquired	12.7% (price as of 2026-08-19)
Sept. 1, 2022	BLDR	A	446	$58.76	$26,207	37,167 Direct	+1.21%	Acquired	22.3% (price as of 2026-08-19)
July 1, 2022	WPC	A	1,919	—	—	25,118 Direct	+8.27%	Acquired	(price as of 2026-08-19)
June 14, 2022	BLDR	A	2,722	—	—	36,721 Direct	+8.01%	Acquired	(price as of 2026-08-19)
June 1, 2022	BLDR	A	411	$63.81	$26,226	33,999 Direct	+1.22%	Acquired	12.6% (price as of 2026-08-19)
March 1, 2022	BLDR	A	359	$73.05	$26,225	33,588 Direct	+1.08%	Acquired	-1.6% (price as of 2026-08-19)
Dec. 1, 2021	BLDR	A	373	$70.22	$26,192	33,229 Direct	+1.14%	Acquired	2.3% (price as of 2026-08-19)
Sept. 1, 2021	BLDR	A	489	$53.59	$26,206	32,856 Direct	+1.51%	Acquired	34.1% (price as of 2026-08-19)
July 1, 2021	WPC	A	2,141	—	—	23,199 Direct	+10.17%	Acquired	(price as of 2026-08-19)
June 15, 2021	BLDR	A	3,459	—	—	32,367 Direct	+11.97%	Acquired	(price as of 2026-08-19)
June 1, 2021	BLDR	A	590	$44.47	$26,237	28,908 Direct	+2.08%	Acquired	61.6% (price as of 2026-08-19)
March 1, 2021	BLDR	A	951	$44.84	$42,643	28,318 Direct	+3.47%	Acquired	60.2% (price as of 2026-08-19)
Jan. 15, 2021	BLDR	A	1,660	—	—	27,367 Direct	+6.46%	Acquired	(price as of 2026-08-19)
Jan. 1, 2021	BLDR	A	25,707	—	—	25,707 Direct	—	Acquired	(price as of 2026-08-19)
July 1, 2020	WPC	A	2,180	—	—	21,058 Direct	+11.55%	Acquired	(price as of 2026-08-19)
May 19, 2020	WPC	P	4,000	$58.78	$235,120	18,878 Direct	+26.89%	Acquired	24.4% (price as of 2026-08-19)
March 18, 2020	WPC	P	2,000	$58.64	$117,280	14,878 Direct	+15.53%	Acquired	24.7% (price as of 2026-08-19)
March 17, 2020	WPC	P	1,000	$64.25	$64,250	11,878 Direct	+9.19%	Acquired	13.8% (price as of 2026-08-19)
March 17, 2020	WPC	P	1,000	$61.59	$61,590	12,878 Direct	+8.42%	Acquired	18.7% (price as of 2026-08-19)
Dec. 11, 2019	WPC	P	2,300	$80.50	$185,150	10,878 Direct	+26.81%	Acquired	-9.2% (price as of 2026-08-19)
July 1, 2019	WPC	A	1,867	—	—	8,578 Direct	+27.82%	Acquired	(price as of 2026-08-19)
July 2, 2018	WPC	A	1,523	—	—	6,711 Direct	+29.36%	Acquired	(price as of 2026-08-19)
July 3, 2017	WPC	A	1,188	—	—	5,188 Direct	+29.70%	Acquired	(price as of 2026-08-19)
Nov. 17, 2016	WPC	P	4,000	$57.73	$230,920	4,000 Direct	—	Acquired	26.7% (price as of 2026-08-19)
Dec. 11, 2008	SPH	G	9,000	—	—	1,289,912 Direct	-0.69%	Disposed	(price as of 2026-08-19)
Oct. 19, 2006	SPH	J	1,025,226	—	—	1,054,226 Direct	+3535.26%	Acquired	(price as of 2026-08-19)
Oct. 19, 2006	SPH	J	784	—	—	784 Indirect	—	Acquired	(price as of 2026-08-19)

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.

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Sept. 30, 2016	WPC	Common Stock	0	Direct