William S. Rosenstadt
CEO and Chairman, Director, 10% Owner · Blueport Acquisition Ltd
- 2025
- Dec 8, 2025
- 1
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies William S. Rosenstadt files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Roy Jiang - BPAC
- Blueport Acquisition Corp - BPAC
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Frequently asked questions
Who is William S. Rosenstadt?
William S. Rosenstadt is a corporate insider, tracked as CEO and Chairman, Director, 10% Owner of Blueport Acquisition Ltd (BPAC). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did William S. Rosenstadt last file a Form 4?
The only primary Form 4 on record is dated 8 December 2025.
Has William S. Rosenstadt been buying or selling stock?
Recorded transactions: 2 open-market purchases and 0 open-market sales across all tracked filings.
