Demski David M sold ATEC
December 11, 2025 · Form 4 insider transaction
Demski David M sold 30,000 shares of Alphatec Holdings, Inc. at $21.20 per share, a transaction worth $636.0K. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Disposed (sell-side)
Shares
30,000
Price
$21.20
Total value
$636.0K
InsiderDemski David M
RoleDirector
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateDecember 11, 2025
Filing dateDecember 12, 2025
Shares owned after399,623
OwnershipDirect
10b5-1 planNo
AmendedNo