On May 24, 2022, we acquired all outstanding equity interests of Antares. A Goodwill balance of $199.5 million was recognized for the excess of the consideration transferred over the net assets acquired and represents the expected revenue and cost synergies of the combined company and assembled workforce.


Balance as of December 31, 2021	$	—
Goodwill acquired	199,481
Balance as of September 30, 2022	$	199,481

Our acquired intangible assets are amortized using the straight-line method over their estimated useful lives of seven to ten years. The following table shows the cost, accumulated amortization and weighted average remaining life in years for our acquired intangible assets as of September 30, 2022 (in thousands).


	Weighted average remaining life (in years)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Auto Injector technology platform	7	$	372,900	$	18,903	$	353,997
XYOSTED proprietary product	10	277,400		9,843		267,557
TLANDO product rights	10	277,600		9,850		267,750
Total definite-lived intangibles, net		$	927,900	$	38,596	$	889,304
ATRS-1902 (IPR&D)	Indefinite					59,600
Total Intangibles, net						$	948,904

The estimated future annual amortization of finite-lived intangible assets is shown in the following table. Actual amortization expense to be reported in future periods could differ from these estimates as a result of acquisitions, divestitures, and asset impairments, among other factors.


Year:	Amortization (in thousands)
Remainder of 2022	$	27,194
2023	108,771
2024	108,771
2025	108,771
2026	108,771
Thereafter	427,026
Total	$	889,304