Mark A Alexander

Current Holdings

Director
Security Holdings
Common Stock, par value $0.01 per share 41,756 shares
Director
Security Holdings
Common Stock 45,850 shares

Cumulative Trading Activity in Common Stock, par value $0.01 per share for Builders Firstsource, Inc. in 2025

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This page tracks insider trading for Mark A Alexander, which means you can track and be informed when insider trading (i.e., insider trades) occurs. Trading stock is common amongst insiders, and the SEC requires stock trades (such as when individuals buy stock, sell stock, receive stock compensation, etc.) from insiders to be made publicly available. Some people follow the insider market to help them when investing in the stock market (e.g., when deciding whether to buy stocks). On this page, you will see stock trading that Mark A Alexander has engaged in since 2021. As shown above, Mark A Alexander has completed $1,131,556 in total transactions, which were made available through the SEC Form 4, a regulatory filing that makes stock exchange data like this public knowledge.

Found 25 filings

Positive values indicate buys, negative values indicate sales.

Ticker Date Net Cash Net Shares Bought Cash Bought Shares Sold Cash Sold Shares
WPC 2024-11-1 $276,430 5,000 $276,430 5,000 $0 0 SEC Filing
WPC 2024-10-1 $29,985 489 $29,985 489 $0 0 SEC Filing
BLDR 2024-9-1 $31,146 179 $31,146 179 $0 0 SEC Filing
WPC 2024-8-16 $114,059 2,000 $114,059 2,000 $0 0 SEC Filing
WPC 2024-8-9 $195,531 3,500 $195,531 3,500 $0 0 SEC Filing
WPC 2024-7-1 $36,220 3,866 $36,220 3,866 $0 0 SEC Filing
BLDR 2024-6-1 $31,193 1,388 $31,193 1,388 $0 0 SEC Filing
WPC 2024-4-5 $36,202 655 $36,202 655 $0 0 SEC Filing
BLDR 2024-3-1 $31,197 156 $31,197 156 $0 0 SEC Filing
WPC 2024-1-5 $36,186 558 $36,186 558 $0 0 SEC Filing
BLDR 2023-12-1 $31,199 224 $31,199 224 $0 0 SEC Filing
WPC 2023-7-3 $0 2,553 $0 2,553 $0 0 SEC Filing
WPC 2023-5-2 $72,479 1,000 $72,479 1,000 $0 0 SEC Filing
BLDR 2023-3-1 $26,243 306 $26,243 306 $0 0 SEC Filing
BLDR 2022-12-1 $26,193 411 $26,193 411 $0 0 SEC Filing
BLDR 2022-9-1 $26,207 446 $26,207 446 $0 0 SEC Filing
WPC 2022-7-1 $0 1,919 $0 1,919 $0 0 SEC Filing
BLDR 2022-6-14 $0 2,722 $0 2,722 $0 0 SEC Filing
BLDR 2022-6-1 $26,226 411 $26,226 411 $0 0 SEC Filing
BLDR 2022-3-1 $26,225 359 $26,225 359 $0 0 SEC Filing
BLDR 2021-12-1 $26,192 373 $26,192 373 $0 0 SEC Filing
BLDR 2021-9-1 $26,206 489 $26,206 489 $0 0 SEC Filing
WPC 2021-7-1 $0 2,141 $0 2,141 $0 0 SEC Filing
BLDR 2021-6-15 $0 3,459 $0 3,459 $0 0 SEC Filing
BLDR 2021-6-1 $26,237 590 $26,237 590 $0 0 SEC Filing

The data shown here is based on historical filings with the SEC, and may contain slight inaccuracies.

This data excludes derivative holdings and transactions.

Additional data regarding trading activity for Mark A Alexander before the earliest date displayed on this page may exist, but is not shown here.