Summary
Updated Aug 30, 2026
Catherine A. Sohn files SEC Form 4 reports at Altimmune, Inc. (ALT). 4 SEC Form 4 filings on record going back to 2025, most recently on 1 May 2026. Most recent open-market trade: sold $1.05M of MAZE on 8 January 2026. Lifetime open-market sales: $1.15M.
Recent Transactions
6Every recent SEC Form 4 transaction Catherine A. Sohn 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 Catherine A. Sohn 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.
- Harold Bernstein - $6.05M of MAZE open-market activity in the last 12 months
- Jason V. Coloma - $3.75M of MAZE open-market activity in the last 12 months
- Atul Dandekar - $1.70M of MAZE open-market activity in the last 12 months
- Amy Bachrodt - $757K of MAZE open-market activity in the last 12 months
- Richard H. Scheller - $464K of MAZE open-market activity in the last 12 months
- Jerome Benedict Durso - $162K 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 Catherine A. Sohn?
Catherine A. Sohn is a corporate insider of Altimmune, Inc. (ALT). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Catherine A. Sohn last file a Form 4?
The most recent primary Form 4 on record is dated 1 May 2026, one of 4 filings going back to 2025.
Has Catherine A. Sohn been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($1.15M) across all tracked filings.
Where can I see all of Catherine A. Sohn'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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