Summary
Updated Aug 31, 2026
Gregory L. Weaver is Chief Financial Officer of Altimmune, Inc. (ALT). 7 SEC Form 4 filings on record going back to 2024, most recently on 3 August 2026. Most recent open-market trade: bought $31K of ALT on 1 April 2026. Lifetime open-market purchases: $49K.
Recent Transactions
5Every recent SEC Form 4 transaction Gregory L. Weaver has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Gregory L. Weaver go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. The typical open-market purchase is $25K (2 buys totaling $49K). The largest single buy on record is $31K of ALT in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Gregory L. Weaver 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.
- Jerome Benedict Durso - $162K of ALT open-market activity in the last 12 months
- John Gill - $31K of ALT open-market activity in the last 12 months
- Wayne Pisano - $20K of ALT 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 Gregory L. Weaver?
Gregory L. Weaver is a corporate insider, tracked as Chief Financial Officer of Altimmune, Inc. (ALT). 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 Gregory L. Weaver submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Gregory L. Weaver been buying or selling stock?
Recorded transactions: 2 open-market purchases ($49K) and 0 open-market sales across all tracked filings.
Where can I see all of Gregory L. Weaver'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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