v3.25.2
Fair Value Measures and Disclosures (FY) (Tables)
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Fair Value Disclosures [Abstract]    
Fair value, by balance sheet grouping

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis within the fair value hierarchy as of the end of each reporting period (in thousands):

 
 
 
 
 
 
 
 
 
 
 
 
 
Fair Value
Hierarchy
 
 
June 30,
2025
 
 
December 31,
2024
Financial assets:
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
 
 
 
 
 
 
 
 
 
Money market funds
 
 
Level 1
 
 
$55,508
 
 
$2,411
Restricted cash and cash equivalents, current
 
 
 
 
 
 
 
 
 
Money market funds
 
 
Level 1
 
 
518,199
 
 
24,185
Restricted cash and cash equivalents, non-current
 
 
 
 
 
 
 
 
 
Money market funds
 
 
Level 1
 
 
—
 
 
56,250
Restricted marketable securities, non-current
 
 
 
 
 
 
 
 
 
Certificates of deposit
 
 
Level 2
 
 
—
 
 
29,308
Prepaid expenses and other current assets
 
 
 
 
 
 
 
 
 
Foreign exchange forward contracts not designated as accounting hedges
 
 
Level 2
 
 
2,279
 
 
—
Other non-current assets
 
 
 
 
 
 
 
 
 
Power purchase agreements
 
 
Level 3
 
 
3,444
 
 
2,562
Total financial assets
 
 
 
 
 
$579,430
 
 
$114,716
Financial liabilities:
 
 
 
 
 
 
 
 
 
Derivative and warrant liabilities
 
 
 
 
 
 
 
 
 
Interest rate swaps designated as accounting hedges
 
 
Level 2
 
 
$271
 
 
$—
Warrant liabilities
 
 
Level 3
 
 
—
 
 
199,645
Power purchase agreements
 
 
Level 3
 
 
427
 
 
444
Total financial liabilities
 
 
 
 
 
$698
 
 
$200,089
 
 
 
 
 
 
 
 
 
 

The following tables presents the hierarchy fair value as of the end of each reporting period (in thousands):

 
 
 
 
 
 
 
 
 
 
 
 
 
Fair Value
Hierarchy
 
 
December 31,
2023
 
 
December 31,
2024
Financial assets:
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
 
 
 
 
 
 
 
 
 
Money market funds
 
 
Level 1
 
 
$87,258
 
 
$2,411
Restricted cash and cash equivalents, current
 
 
 
 
 
 
 
 
 
Money market funds
 
 
Level 1
 
 
42,940
 
 
24,185
Prepaid expenses and other current assets
 
 
 
 
 
 
 
 
 
Available-for-sale marketable securities
 
 
Level 2
 
 
2,368
 
 
—
Restricted cash and cash equivalents, non-current
 
 
 
 
 
 
 
 
 
Money market funds
 
 
Level 1
 
 
206,846
 
 
56,250
Restricted marketable securities, non-current
 
 
 
 
 
 
 
 
 
Certificates of deposit
 
 
Level 2
 
 
171,734
 
 
29,308
Other non-current assets
 
 
 
 
 
 
 
 
 
Power purchase agreements
 
 
Level 3
 
 
1,459
 
 
2,562
Total financial assets
 
 
 
 
 
$512,605
 
 
$114,716
Financial liabilities:
 
 
 
 
 
 
 
 
 
Derivative and warrant liabilities
 
 
 
 
 
 
 
 
 
Bifurcated embedded derivative liabilities
 
 
Level 3
 
 
$386,469
 
 
$—
Warrant liabilities
 
 
Level 3
 
 
70,930
 
 
199,645
Series B tranche liability
 
 
Level 3
 
 
69,648
 
 
—
Power purchase agreements
 
 
Level 3
 
 
—
 
 
444
Total financial liabilities
 
 
 
 
 
$527,047
 
 
$200,089
 
 
 
 
 
 
 
 
 
 
Financial Assets Measured at Fair Value on Recurring Basis  

The following tables present information about the Company’s financial assets that are measured at fair value on a recurring basis as of the end of each reporting period (in thousands):

 
 
 
 
 
 
 
December 31, 2023
 
 
 
Adjusted
Cost
 
 
Gross
Unrealized
Gains
 
 
Gross
Unrealized
Losses
 
 
Fair Value
Financial assets:
 
 
 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
 
 
$87,258
 
 
$—
 
 
$—
 
 
$87,258
Restricted cash and cash equivalents, current
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
 
 
42,940
 
 
—
 
 
—
 
 
42,940
Prepaid expenses and other current assets
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale marketable securities
 
 
2,354
 
 
14
 
 
—
 
 
2,368
Restricted cash and cash equivalents, non-current
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
 
 
206,846
 
 
—
 
 
—
 
 
206,846
Restricted marketable securities, non-current
 
 
 
 
 
 
 
 
 
 
 
 
Certificates of deposit
 
 
171,734
 
 
—
 
 
—
 
 
171,734
Total
 
 
$511,132
 
 
$14
 
 
$—
 
 
$511,146
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2024
 
 
 
Adjusted
Cost
 
 
Gross
Unrealized
Gains
 
 
Gross
Unrealized
Losses
 
 
Fair Value
Financial assets:
 
 
 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
 
 
$2,411
 
 
$—
 
 
$—
 
 
$2,411
Restricted cash and cash equivalents, current
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
 
 
24,185
 
 
—
 
 
—
 
 
24,185
Restricted cash and cash equivalents, non-current
 
 
 
 
 
 
 
 
 
 
 
 
Money market funds
 
 
56,250
 
 
—
 
 
—
 
 
56,250
Restricted marketable securities, non-current
 
 
 
 
 
 
 
 
 
 
 
 
Certificates of deposit
 
 
29,308
 
 
—
 
 
—
 
 
29,308
Total
 
 
$112,154
 
 
$—
 
 
$—
 
 
$112,154
 
 
 
 
 
 
 
 
 
 
 
 
 
Fair value measurement inputs and valuation techniques

The Company’s valuation of the warrant liabilities utilized the Black-Scholes option-pricing model that relied on the following significant inputs:

 
 
 
 
 
 
 
 
 
 
March 21,
2025
 
 
December 31,
2024
Stock price
 
 
$41
 
 
$48
Volatility
 
 
60%
 
 
60%
Risk-free rate
 
 
4%
 
 
4%
Dividend yield
 
 
0%
 
 
0%
 
 
 
 
 
 
 

The Company’s valuation of the warrant liabilities utilized the Black-Scholes option-pricing model that relied on the following significant inputs:

 
 
 
 
 
 
 
 
 
 
December 31,
2023
 
 
December 31,
2024
Stock price
 
 
$18
 
 
$48
Volatility
 
 
55%
 
 
60%
Risk-free rate
 
 
4%
 
 
4%
Dividend yield
 
 
0%
 
 
0%
 
 
 
 
 
 
 

The Company’s valuation of the embedded derivative liabilities utilized the binomial lattice model that relied on the following significant inputs:

 
 
 
 
 
 
 
December 31,
2023
Stock price
 
 
$18
Volatility
 
 
40%
Risk-free rate
 
 
4%
Lattice or Monte Carlo model projection period (years)
 
 
2
 
 
 
 

As discussed in Note 10—Debt, the 2021 Convertible Notes were converted into common stock on September 17, 2024. The following table is a summary of the significant unobservable inputs to value the embedded derivative liability immediately before conversion:

 
 
 
 
 
 
 
September 17,
2024
Stock price
 
 
$44
Discount rate
 
 
12%
 
 
 
 

The Company’s valuation of the Series B tranche liability utilized the Black-Scholes option-pricing model that relied on the following significant inputs:

 
 
 
 
 
 
 
December 31,
2023
Series B stock price
 
 
$21
Volatility
 
 
21%
Risk-free rate
 
 
5%
 
 
 
 
Schedule of change in the fair value of the assets, measured using Level 3 Inputs  

The following table presents a summary of the changes in the fair value of the Company’s Level 3 financial instruments (in thousands):

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Power Purchase
Agreements –
Asset
 
 
Warrant
Liabilities
 
 
Bifurcated
Embedded
Derivative
Liabilities
 
 
Power Purchase
Agreements –
Liability
 
 
Series B
Tranche
Liability
Balance at January 1, 2023
 
 
$—
 
 
$3,887
 
 
$4,901
 
 
$—
 
 
$—
Additions
 
 
1,040
 
 
1,716
 
 
20,829
 
 
—
 
 
10,300
Adjustment to fair value
 
 
419
 
 
68,334
 
 
360,739
 
 
—
 
 
104,879
Settlements
 
 
—
 
 
(3,007)
 
 
—
 
 
—
 
 
(45,531)
Balance at December 31, 2023
 
 
1,459
 
 
70,930
 
 
386,469
 
 
—
 
 
69,648
Additions
 
 
—
 
 
—
 
 
—
 
 
770
 
 
—
Adjustment to fair value
 
 
1,103
 
 
128,715
 
 
627,263
 
 
(326)
 
 
(49)
Settlements
 
 
—
 
 
—
 
 
(1,013,732)
 
 
—
 
 
(69,599)
Balance at December 31, 2024
 
 
$2,562
 
 
$199,645
 
 
$—
 
 
$444
 
 
$—
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Contractual Maturity of Investments in Available-for-sale Securities  

The following table summarizes the estimated fair value of investments in available-for-sale marketable debt securities by effective contractual maturity dates (in thousands):

 
 
 
 
 
 
 
December 31,
2023
Due in one year or less
 
 
$—
Due over one year
 
 
2,368
Total available-for-sale marketable securities
 
 
$2,368