William D. Waddill
Director · Protagonist Therapeutics, Inc
- 2024
- Jun 25, 2026
- 10
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies William D. Waddill 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.
- Dinesh V. Ph D. Patel - $60.58M in PTGX purchases and sales in the last 12 months
- Asif Ali - $15.63M in PTGX purchases and sales in the last 12 months
- Christopher Richard Anzalone - $12.35M in ARWR purchases and sales in the last 12 months
- Muneer A. Satter - $11.97M in ANNX purchases and sales in the last 12 months
- Bryan Giraudo - $5.92M in PTGX purchases and sales in the last 12 months
- Arturo Md Molina - $4.49M in PTGX purchases and sales in the last 12 months
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Frequently asked questions
Who is William D. Waddill?
William D. Waddill is a corporate insider, tracked as Director of Protagonist Therapeutics, Inc (PTGX). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did William D. Waddill last file a Form 4?
The most recent primary Form 4 on record is dated 25 June 2026, one of 10 filings going back to 2024.
Has William D. Waddill been buying or selling stock?
Recorded transactions: 0 open-market purchases and 10 open-market sales ($6.24M) across all tracked filings.
