William D. Porteous
Director · BlackSky Technology Inc.
IndividualSelling only
- 2024
- Oct 1, 2026
- 10
Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies William D. Porteous 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.
- Brian E. O'Toole - $3.15M in BKSY purchases and sales in the last 12 months
- Henry Edward Dubois - $1.01M in BKSY purchases and sales in the last 12 months
- Christiana L. Lin - $821K in BKSY purchases and sales in the last 12 months
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Frequently asked questions
Who is William D. Porteous?
William D. Porteous is a corporate insider, tracked as Director of BlackSky Technology Inc. (BKSY). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William D. Porteous submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has William D. Porteous been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($6K) across all tracked filings.
