Summary
Updated Aug 31, 2026
J. Matthew Singleton files SEC Form 4 reports at Viking Therapeutics, Inc. (VKTX). 2 SEC Form 4 filings on record going back to 2024, most recently on 6 January 2026. Most recent open-market trade: sold $1.27M of VKTX on 25 October 2024. Lifetime open-market sales: $1.27M.
Recent Transactions
3Every recent SEC Form 4 transaction J. Matthew Singleton 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 J. Matthew Singleton 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 Lian - $14.00M of VKTX open-market activity in the last 12 months
- Greg Zante - $2.82M of VKTX open-market activity in the last 12 months
- Marianna Mancini - $2.73M of VKTX open-market activity in the last 12 months
- Charles A. Rowland Jr. - $2.13M of VKTX open-market activity in the last 12 months
- Matthew W. Foehr - $562K of VKTX open-market activity in the last 12 months
- Neil William Aubuchon - $150K of VKTX 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 J. Matthew Singleton?
J. Matthew Singleton is a corporate insider of Viking Therapeutics, Inc. (VKTX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did J. Matthew Singleton last file a Form 4?
The most recent primary Form 4 on record is dated 6 January 2026, one of 2 filings going back to 2024.
Has J. Matthew Singleton been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($1.27M) across all tracked filings.
Where can I see all of J. Matthew Singleton'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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