Castleark Management’s Alphatec Holdings ATEC Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-296,160	Closed	-$6.23M	–	297
2025 Q4	$6.23M	Buy	+296,160	New	+$5.48M	0.18%	135
2024 Q2	–	Sell	-112,340	Closed	-$1.55M	–	274
2024 Q1	$1.55M	Sell	112,340 -91,433	-45%	-$1.36M	0.06%	191
2023 Q4	$3.08M	Sell	203,773 -172,597	-46%	-$2.06M	0.14%	162
2023 Q3	$4.88M	Sell	376,370 -4,220	-1%	-$66.1K	0.25%	96
2023 Q2	$6.84M	Buy	380,590 +146,030	+62%	+$2.27M	0.31%	67
2023 Q1	$3.66M	Buy	+234,560	New	+$3.32M	0.18%	126
2022 Q3	–	Sell	-142,982	Closed	-$935K	–	289
2022 Q2	$935K	Buy	+142,982	New	+$1.32M	0.05%	190
2021 Q4	–	Sell	-411,475	Closed	-$5.02M	–	331
2021 Q3	$5.02M	Sell	411,475 -43,250	-10%	-$603K	0.19%	124
2021 Q2	$6.97M	Sell	454,725 -11,230	-2%	-$173K	0.23%	115
2021 Q1	$7.36M	Buy	465,955 +42,725	+10%	+$672K	0.26%	104
2020 Q4	$6.14M	Buy	+423,230	New	+$4.47M	0.23%	121