Leases (Q3) (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2024

Dec. 31, 2023

Leases [Abstract]

Schedule of Components of Operating Lease Expense

The components of operating lease expense were as follows:


			Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)			2024			2023			2024			2023
Operating lease cost			$368			$368			$1,103			$1,103
Variable lease expense			150			136			450			394
Total lease expense			$518			$504			$1,553			$1,497

The components of operating lease expense were as follows:


			Year Ended December 31,
(in thousands)			2023			2022
Operating lease cost			$1,470			$1,609
Variable lease expense			530			611
Short-term lease expense			62			38
Total lease expense			$2,062			$2,258

Schedule of Maturities of Operating Lease Liabilities

As of September 30, 2024, the maturities of the Company’s operating lease liabilities were as follows:


(in thousands)
Remainder of 2024			$395
2025			1,627
2026			1,674
2027			1,729
2028			297
Total lease payments			5,722
Less: Imputed interest			(535)
Present value of lease liabilities			$5,187

As of December 31, 2023, the maturities of the Company’s operating lease liabilities were as follows:


(in thousands)
2024			$1,580
2025			1,627
2026			1,674
2027			1,729
2028			297
Thereafter			—
Total lease payments			6,907
Less: Imputed interest			(776)
Present value of lease liabilities			$6,131