Koefoed William A sold OS
December 15, 2025 · Form 4 insider transaction
Koefoed William A sold 9,571 shares of OS at $17.73 per share, a transaction worth $169.7K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Disposed (sell-side)
Shares
9,571
Price
$17.73
Total value
$169.7K
InsiderKoefoed William A
RoleOfficer
CompanyOS
SecurityClass A Common Stock
Transaction codeS: Open-market sale
Transaction dateDecember 15, 2025
Filing dateDecember 16, 2025
Shares owned after206,127
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 21, 2025.; The shares reported include unvested restricted stock units.