Sanofi - SEC Form 4 Insider Trading Activity
10% Owner
Summary
Updated Aug 16, 2026
Sanofi has filed 2 SEC Form 4 filings across 2 companies in the last 90 days - buying. Lifetime open-market purchases: $5.10M.
Trading Pattern
InsiderAlpha's records for Sanofi go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $5.10M (1 buy totaling $5.10M). The largest single buy on record is $5.10M of ATTO 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.
Career & Filing History
Every role Sanofi has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- 10% Owner at Latigo Biotherapeutics, Inc. (LTGO) - 1 filing, 2026
- 10% Owner at Attovia Therapeutics, Inc. (ATTO) - 1 filing, 2026
Recent Transactions
4Companies - Last 90 Days
2- Latigo Biotherapeutics, Inc. (LTGO) - 1 filing, last 2026-08-12
- Attovia Therapeutics, Inc. (ATTO) - 1 filing, last 2026-08-07
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Sanofi has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- GOLDMAN SACHS GROUP INC - $12.54M of ATTO open-market activity in the last 12 months
- Colin Walsh - $12.54M of ATTO open-market activity in the last 12 months
- Redmile Group, LLC - $10.20M of ATTO open-market activity in the last 12 months
- Frazier Life Sciences XI, L.P. - $10.00M of ATTO open-market activity in the last 12 months
- venBio Global Strategic Fund IV, L.P. - $6.50M of ATTO open-market activity in the last 12 months
- Foresite Capital Management V, LLC - $2.52M of LTGO 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 Sanofi?
Sanofi is a corporate insider - currently tracked as 10% Owner of Latigo Biotherapeutics, Inc. (LTGO). InsiderAlpha tracks every SEC Form 4 filing in real time.
How many SEC Form 4 filings has Sanofi submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Sanofi been buying or selling stock?
Recorded transactions: 1 open-market purchase ($5.10M) and 0 open-market sales across all tracked filings.
Where can I see all of Sanofi'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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