Sanofi bought ATTO
August 6, 2026 · Form 4 insider transaction
Sanofi bought 782,855 shares of ATTO, a transaction worth N/A. The trade was recorded as conversion of a derivative and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Acquired (buy-side)
Shares
782,855
Price
N/A
Total value
N/A
InsiderSanofi
Role10% owner
CompanyATTO
SecurityCommon Stock
Transaction codeC: Conversion of a derivative
Transaction dateAugust 6, 2026
Filing dateAugust 7, 2026
Shares owned after782,855
OwnershipIndirect
10b5-1 planNo
AmendedNo
Footnotes
The Series C preferred stock (the "Preferred Stock") converted by its terms in full automatically into shares of common stock, upon the consummation of the Issuer's initial public offering (the "IPO") on August 6, 2026. The convertibility and expiration of the Preferred Stock prior to the IPO are described in Sanofi's Form 3, filed with the Securities and Exchange Commission on August 4, 2026.; Sanofi beneficially owns the securities reported herein through various wholly-owned subsidiaries.