Mark A Alexander Net Worth - Insider Trades and Bio as of Jun 7, 2026

BLDRBuilders FirstSource, Inc.SEC CIK: 0001212607

Estimated Net Worth

$30.3 Million0.0%vs Last Year

Last Updated: May 19, 2026 11:10 PM EST

Transaction Summary

Total Transactions96

Buy-Sell Ratio∞

Buy Transactions11

Sell Transactions0

Transaction Volume

Total Volume$2.02M

Net Volume$2.02M

Buy Volume$2.02M

Sell Volume$0.00

Trade Analysis

AVG Trade Size$29.79K

Largest Trade$276.43K

Most Active MonthJun

Most Active Year2024

Trading Sentiment

OverallBullish

Recent TradeNeutral

Last 90 Days0 Trades

ConvictionNone

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Mark A Alexander has an estimated net worth of $30.3 Million. This is based on reported shares across multiple companies, which include W. P. Carey Inc., KAYDON CORP, Builders FirstSource, Inc., SUBURBAN PROPANE PARTNERS LP, and BMC STOCK HOLDINGS, INC..

2024 was Mark A Alexander's most active year for acquiring shares with 13 total transactions. Mark A Alexander's most active month to acquire stocks was the month of April. 2013 was Mark A Alexander's most active year for disposing of shares, totalling 10 transactions. Mark A Alexander's most active month to dispose stocks was the month of September. 2024 saw Mark A Alexander paying a total of $849,290.50 for 17,958 shares, this is the most they've acquired in one year. In 2013 Mark A Alexander cashed out on 57,339 shares for a total of $225,161.89, their largest year based on trade value.

Holdings & Transactions

BLDRbuilders firstsource, inc.

Updated: Mar 03, 2026VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.01	299.00	$104.29	$31.18K	Mar 03, 2026	44.95K	Grant	—	Mar 01	View
From 4	0.01	278.00	$112.23	$31.20K	Dec 03, 2025	44.65K	Grant	—	Dec 01	View
From 4	0.01	225.00	$138.68	$31.20K	Sep 03, 2025	44.37K	Grant	—	Sep 01	View
From 4	0.01	290.00	$107.68	$31.23K	Jun 03, 2025	44.14K	Grant	—	Jun 01	View
From 4	0.04	1.71K	—	—	May 29, 2025	43.85K	Grant	—	May 27	View
From 4/A	0.01	224.00	$138.99	$31.13K	Mar 18, 2025	42.15K	Grant	—	Mar 01	View
From 4	0.01	224.00	$138.99	$31.13K	Mar 04, 2025	42.15K	Grant	—	Feb 28	View
From 4	0.00	167.00	$186.47	$31.14K	Dec 03, 2024	41.92K	Grant	—	Dec 01	View
From 4	0.00	179.00	$174.00	$31.15K	Sep 04, 2024	41.76K	Grant	—	Sep 01	View
From 4	0.03	1.39K	$160.79	$31.19K	Jun 04, 2024	41.58K	Grant	—	Jun 01 - 04	View
From 4	0.00	156.00	$199.98	$31.20K	Mar 05, 2024	40.19K	Grant	—	Mar 01	View
From 4	0.01	224.00	$139.28	$31.20K	Dec 05, 2023	40.03K	Grant	—	Dec 01	View
From 4	0.01	210.00	$148.74	$31.24K	Sep 06, 2023	39.81K	Grant	—	Sep 01	View
From 4	0.04	1.45K	—	—	Jun 16, 2023	39.60K	Grant	—	Jun 14	View
From 4	0.01	269.00	$115.86	$31.17K	Jun 05, 2023	38.15K	Grant	—	Jun 01	View
From 4	0.01	306.00	$85.76	$26.24K	Mar 03, 2023	37.88K	Grant	—	Mar 01	View
From 4	0.01	411.00	$63.73	$26.19K	Dec 05, 2022	37.58K	Grant	—	Dec 01	View
From 4	0.01	446.00	$58.76	$26.21K	Sep 06, 2022	37.17K	Grant	—	Sep 01	View
From 4	0.08	2.72K	—	—	Jun 16, 2022	36.72K	Grant	—	Jun 14	View
From 4	0.01	411.00	$63.81	$26.23K	Jun 03, 2022	34.00K	Grant	—	Jun 01	View
From 4	0.01	359.00	$73.05	$26.22K	Mar 03, 2022	33.59K	Grant	—	Mar 01	View
From 4	0.01	373.00	$70.22	$26.19K	Dec 03, 2021	33.23K	Grant	—	Dec 01	View
From 4	0.02	489.00	$53.59	$26.21K	Sep 03, 2021	32.86K	Grant	—	Sep 01	View
From 4	0.12	3.46K	—	—	Jun 17, 2021	32.37K	Grant	—	Jun 15	View
From 4	0.02	590.00	$44.47	$26.24K	Jun 03, 2021	28.91K	Grant	—	Jun 01	View
From 4	0.03	951.00	$44.84	$42.64K	Mar 02, 2021	28.32K	Grant	—	Mar 01	View
From 4	0.06	1.66K	—	—	Jan 20, 2021	27.37K	Grant	—	Jan 15	View
From 4	—	25.71K	—	—	Jan 05, 2021	25.71K	Grant	—	Jan 01	View
From 3	—	—	—	—	Jan 05, 2021	—	—	—	—	View

WPCw. p. carey inc.

Updated: Oct 03, 2025VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.01	438.00	$68.47	$29.99K	Oct 03, 2025	51.10K	Grant	—	Oct 01	View
From 4	0.07	3.25K	$62.99	$29.98K	Jul 02, 2025	50.40K	Grant	—	Jul 01	View
From 4	0.01	475.00	$63.03	$29.94K	Apr 03, 2025	47.15K	Grant	—	Apr 01	View
From 4	0.01	552.00	$54.29	$29.97K	Jan 03, 2025	46.40K	Grant	—	Jan 02	View
From 4	0.12	5.00K	$55.29	$276.43K	Nov 05, 2024	45.85K	Purchase	—	Nov 01	View
From 4	0.01	489.00	$61.32	$29.99K	Oct 02, 2024	40.61K	Grant	—	Oct 01	View
From 4	0.05	2.00K	$57.03	$114.06K	Aug 20, 2024	40.12K	Purchase	—	Aug 16	View
From 4	0.10	3.50K	$55.87	$195.53K	Aug 12, 2024	38.12K	Purchase	—	Aug 09	View
From 4	0.13	3.87K	$54.63	$36.22K	Jul 01, 2024	34.44K	Grant	—	Jul 01	View
From 4	0.02	655.00	$55.27	$36.20K	Apr 09, 2024	30.38K	Grant	—	Apr 05	View
From 4	0.02	558.00	$64.85	$36.19K	Jan 08, 2024	29.58K	Acquisition	—	Jan 05	View
From 4	0.10	2.55K	—	—	Jul 05, 2023	28.67K	Grant	—	Jul 03	View
From 4	0.04	1.00K	$72.48	$72.48K	May 03, 2023	26.12K	Purchase	—	May 02	View
From 4	0.08	1.92K	—	—	Jul 06, 2022	25.12K	Grant	—	Jul 01	View
From 4	0.10	2.14K	—	—	Jul 06, 2021	23.20K	Grant	—	Jul 01	View
From 4	0.12	2.18K	—	—	Jul 06, 2020	21.06K	Grant	—	Jul 01	View
From 4	0.27	4.00K	$58.78	$235.10K	May 21, 2020	18.88K	Purchase	—	May 19	View
From 4	0.37	4.00K	$60.78	$243.12K	Mar 19, 2020	14.88K	Purchase	—	Mar 17 - 18	View
From 4	0.27	2.30K	$80.50	$185.15K	Dec 13, 2019	10.88K	Purchase	—	Dec 11	View
From 4	0.28	1.87K	—	—	Jul 02, 2019	8.58K	Grant	—	Jul 01	View
From 4	0.29	1.52K	—	—	Jul 03, 2018	6.71K	Grant	—	Jul 02	View
From 4	0.30	1.19K	—	—	Jul 05, 2017	5.19K	Grant	—	Jul 03	View
From 4	—	4.00K	$57.73	$230.92K	Nov 17, 2016	4.00K	Purchase	—	Nov 17	View
From 3	—	—	—	—	Sep 30, 2016	—	—	—	—	View

bmc stock holdings, inc.

Updated: Jan 05, 2021

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	19.59K	—	—	Jan 05, 2021	—	Disposition	—	Jan 01	View
From 4	0.40	5.61K	—	—	May 15, 2020	19.59K	Grant	—	May 13	View
From 4	0.61	5.31K	—	—	May 17, 2019	13.97K	Grant	—	May 16	View
From 4	1.45	5.13K	—	—	May 17, 2018	8.67K	Grant	—	May 16	View
From 4	—	3.54K	—	—	Aug 03, 2017	3.54K	Grant	—	Aug 01	View
From 3	—	—	—	—	Aug 03, 2017	—	—	—	—	View

kaydon corp

Updated: Oct 18, 2013

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	57.34K	$10.61	-$225.16K	Oct 18, 2013	—	Disposition	—	Oct 16	View
From 4	0.01	24.70	$35.52	$877.34	Oct 02, 2013	4.41K	Grant	—	Sep 30	View
From 4	0.01	31.61	$27.55	$870.86	Jul 02, 2013	4.39K	Grant	—	Jun 30	View
From 4	0.45	9.43K	—	—	May 13, 2013	30.43K	Grant	—	May 09	View
From 4	0.01	33.78	$25.58	$864.09	Apr 02, 2013	4.35K	Grant	—	Mar 31	View
From 4	0.01	35.81	$23.93	$856.93	Jan 02, 2013	4.32K	Grant	—	Dec 31	View
From 4	0.01	38.02	$22.34	$849.37	Oct 02, 2012	4.28K	Grant	—	Sep 30	View
From 4	0.01	39.34	$21.39	$841.48	Jul 03, 2012	4.25K	Grant	—	Jun 30	View
From 4	0.91	10.00K	$23.22	$232.18K	May 15, 2012	21.00K	Purchase	—	May 14	View
From 4	0.45	4.50K	—	—	May 11, 2012	14.50K	Grant	—	May 09	View
From 4	0.42	1.24K	$25.51	$31.72K	Apr 03, 2012	4.21K	Grant	—	Mar 31	View
From 4	0.01	19.31	$30.50	$588.95	Jan 03, 2012	2.96K	Grant	—	Dec 31	View
From 4	0.01	20.39	$28.68	$584.79	Oct 04, 2011	2.94K	Grant	—	Sep 30	View
From 4	0.01	14.81	$37.32	$552.71	Jul 01, 2011	2.92K	Grant	—	Jun 30	View
From 4	0.50	4.50K	—	—	May 06, 2011	13.50K	Grant	—	May 05	View
From 4	0.00	14.04	$39.19	$550.23	Apr 04, 2011	2.91K	Grant	—	Mar 31	View
From 4	0.17	422.88	$40.72	$17.22K	Jan 04, 2011	2.90K	Grant	—	Dec 31	View
From 4	0.19	394.36	$34.60	$13.64K	Oct 04, 2010	2.47K	Grant	—	Sep 30	View
From 4	0.26	427.49	$32.86	$14.05K	Jul 01, 2010	2.08K	Grant	—	Jun 30	View
From 4	0.56	4.50K	—	—	May 21, 2010	12.50K	Grant	—	May 20	View
From 4	0.28	358.58	$37.60	$13.48K	Apr 01, 2010	1.65K	Grant	—	Mar 31	View
From 4	0.01	6.47	$35.76	$231.37	Jan 04, 2010	1.29K	Grant	—	Dec 31	View
From 4	1.67	5.00K	$35.97	$179.85K	Dec 18, 2009	8.00K	Purchase	—	Dec 16	View
From 4	0.01	7.10	$32.42	$230.18	Oct 02, 2009	1.29K	Grant	—	Sep 30	View
From 4	0.01	6.64	$32.56	$216.20	Jul 01, 2009	1.28K	Grant	—	Jun 30	View
From 4	2.25	4.50K	—	—	May 26, 2009	6.50K	Grant	—	May 22	View
From 4	0.01	7.86	$27.33	$214.81	Apr 02, 2009	1.27K	Grant	—	Mar 31	View
From 4	0.58	462.48	$34.35	$15.89K	Jan 05, 2009	1.26K	Grant	—	Dec 31	View
From 4	0.37	218.58	$45.06	$9.85K	Oct 02, 2008	801.79	Grant	—	Sep 30	View
From 4	0.80	258.68	$51.41	$13.30K	Jul 02, 2008	583.21	Grant	—	Jun 30	View
From 4	4.50	4.50K	—	—	May 09, 2008	5.50K	Grant	—	May 07	View
From 4	—	324.53	$43.91	$14.25K	Apr 02, 2008	324.53	Grant	—	Mar 31	View
From 4	—	1.00K	$52.04	$52.04K	Nov 06, 2007	1.00K	Purchase	—	Nov 02	View
From 4	—	5.00K	—	—	Jul 30, 2007	5.00K	Grant	—	Jul 27	View
From 3	—	—	—	—	Jul 27, 2007	—	—	—	—	View

SPHsuburban propane partners lp

Chief Executive Officer Director

Updated: Dec 15, 2008VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.01	9.00K	—	—	Dec 15, 2008	1.29M	Grant	—	Dec 11	View
From 4	35.38	1.03M	—	—	Oct 20, 2006	1.06M	Acquisition	—	Oct 19	View

Benzinga

Benzinga

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Holdings & Transactions