Summary
Updated Aug 31, 2026
William J. Post is Director of FIRST SOLAR, INC. (FSLR). 7 SEC Form 4 filings on record going back to 2024, most recently on 1 July 2026.
Recent Transactions
7Every recent SEC Form 4 transaction William J. Post has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William J. Post 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.
- Georges Antoun - $10.62M of FSLR open-market activity in the last 12 months
- Mark R. Widmar - $9.01M of FSLR open-market activity in the last 12 months
- Alexander R. Bradley - $4.01M of FSLR open-market activity in the last 12 months
- Jason E. Dymbort - $3.82M of FSLR open-market activity in the last 12 months
- Caroline Stockdale - $3.57M of FSLR open-market activity in the last 12 months
- Markus Gloeckler - $2.76M of FSLR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William J. Post?
William J. Post is a corporate insider, tracked as Director of FIRST SOLAR, INC. (FSLR). InsiderAlpha holds 7 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 J. Post submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of William J. Post's SEC 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.
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