Profile
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- Builders FirstSource, Inc.
- W. P. Carey Inc.
Updated Jul 16, 2026
ALEXANDER MARK A has filed 2 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $276K.
| Role | Insider |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-02 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 409 | $76.26 | $31K |
| 2026-05-18 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 2.6K | $0.00 | |
| 2026-03-03 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 299 | $104.29 | $31K |
| 2025-12-03 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 278 | $112.23 | $31K |
| 2025-10-01 | WPC | W. P. Carey Inc. | A — Grant or award | 438 | $68.47 | $30K |
| 2025-09-01 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 225 | $138.68 | $31K |
| 2025-07-01 | WPC | W. P. Carey Inc. | A — Grant or award | 476 | $62.99 | $30K |
| 2025-07-01 | WPC | W. P. Carey Inc. | A — Grant or award | 2.8K | $0.00 | |
| 2025-06-01 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 290 | $107.68 | $31K |
| 2025-05-27 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 1.7K | $0.00 | |
| 2025-04-01 | WPC | W. P. Carey Inc. | A — Grant or award | 475 | $63.03 | $30K |
| 2024-12-03 | BLDR | Builders FirstSource, Inc. | A — Grant or award | 167 | $186.47 | $31K |
| 2024-11-05 | WPC | W. P. Carey Inc. | P — Open-market purchase | 5.0K | $55.29 | $276K |
| 2024-10-02 | WPC | W. P. Carey Inc. | A — Grant or award | 489 | $61.32 | $30K |
ALEXANDER MARK A is a corporate insider — currently tracked as Insider of Builders FirstSource, Inc. (BLDR). InsiderAlpha tracks every SEC Form 4 filing in real time.
2 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 1 open-market purchases ($276K) and 0 open-market sales () across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live ALEXANDER MARK A profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.