Summary
Updated Aug 30, 2026
Amy Sullivan is Chief Financial Officer of IO Biotech, Inc. (IOBT). 1 SEC Form 4 filing on record, dated 23 December 2024. Most recent open-market trade: bought $8K of IOBT on 23 December 2024. Lifetime open-market purchases: $8K.
Recent Transactions
1Every recent SEC Form 4 transaction Amy Sullivan has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Amy Sullivan go back to 2024: 1 primary Form 4 filing, an average of 0.3 per year. The typical open-market purchase is $8K (1 buy totaling $8K). The largest single buy on record is $8K of IOBT in 2024. 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 have reported open-market trades at the same companies as Amy Sullivan. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Qasim Iftikhar Ahmad - $27K of IOBT open-market activity on record
- Mai-Britt Zocca - $10K of IOBT open-market activity on record
- Devin Whittemore Smith - $10K of IOBT open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Amy Sullivan?
Amy Sullivan is a corporate insider, tracked as Chief Financial Officer of IO Biotech, Inc. (IOBT). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Amy Sullivan last file a Form 4?
The only primary Form 4 on record is dated 23 December 2024.
Has Amy Sullivan been buying or selling stock?
Recorded transactions: 1 open-market purchase ($8K) and 0 open-market sales across all tracked filings.
Where can I see all of Amy Sullivan'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.
Learn More
Follow Amy Sullivan and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial