Redmile Group, LLC bought ATTO

August 6, 2026 · Form 4 insider transaction

Redmile Group, LLC bought 200,000 shares of ATTO at $17.00 per share, a transaction worth $3.40M. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 1 day after the transaction.

Direction
Acquired (buy-side)
Shares
200,000
Price
$17.00
Total value
$3.40M
Role
CompanyATTO
SecurityCommon Stock
Transaction codeP: Open-market purchase
Transaction dateAugust 6, 2026
Filing dateAugust 7, 2026
Shares owned after982,854
OwnershipDirect
10b5-1 planNo
AmendedNo

Footnotes

These securities are held directly by Redmile Biopharma Investments III, L.P. ("RBI III"), which is managed by Redmile Group, LLC ("Redmile"). RBI III disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that RBI III is the beneficial owner of the reported securities for purposes of Section 16 of the Exchange Act, or for any other purpose.; Redmile may be deemed to beneficially own the reported securities as the investment manager of RBI III and the other Redmile Clients. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. Redmile and Mr. Green disclaim beneficial ownership of the reported securities except to the extent of its and his respective pecuniary interest therein, if any. This report shall not be deemed an admission that Redmile or Mr. Green is the beneficial owner of the securities for purposes of Section 16 of the Exchange Act, or for any other purpose.

View the original Form 4 on SEC EDGAR