Summary
Updated Aug 31, 2026
Jeffrey Cerio is General Counsel of Korro Bio, Inc. (KRRO). 4 SEC Form 4 filings on record going back to 2025, most recently on 17 July 2026. Most recent open-market trade: sold $72K of KRRO on 17 June 2026. Lifetime open-market sales: $72K.
Recent Transactions
3Every recent SEC Form 4 transaction Jeffrey Cerio has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Jeffrey Cerio go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. 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 Jeffrey Cerio 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.
- Forest Baskett - $5.00M of KRRO open-market activity in the last 12 months
- Edward T. Mathers - $5.00M of KRRO open-market activity in the last 12 months
- Paul Edward Walker - $5.00M of KRRO open-market activity in the last 12 months
- Anthony A. Florence Jr. - $5.00M of KRRO open-market activity in the last 12 months
- Mohamad Makhzoumi - $5.00M of KRRO open-market activity in the last 12 months
- Scott D. Sandell - $5.00M of KRRO 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 Jeffrey Cerio?
Jeffrey Cerio is a corporate insider, tracked as General Counsel of Korro Bio, Inc. (KRRO). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Jeffrey Cerio submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Jeffrey Cerio been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($72K) across all tracked filings.
Where can I see all of Jeffrey Cerio'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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