Company: CCIXW
Filing Date: 2025-12-05
Form Type: S-4/A
Source: 0001193125-25-309933
Chunk: 540

Company: Churchill Capital Corp IX/Cayman
Filing Date: 2025-12-05
Form: S-4/A
Chunk 540
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 rate: The risk-free interest rate of 3.71% is based on the U.S. Treasury yield curve in effect at the time of issuance for zero-coupon U.S. Treasury notes with maturities corresponding to the expected five-year term of the Earnout Period. • Expected term : The expected term is the five-year term of the Earnout Period.

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• Expected dividend yield: The expected dividend yield is zero as PlusAI has never declared or paid cash dividends and has no current plans to do so during the expected term. The fair value of the Earnout Shares is subject to change as additional information becomes available and additional analyses are performed over the fair value upon the closing, and such changes in fair value could be material. The unaudited pro forma condensed combined financial statements do not reflect pro forma adjustments related to the recognition of the Earnout Shares because there is no net impact on stockholders’ deficit on a pro forma combined basis as the amount is recorded as a debit and credit of $121.0 million to additional paid-in-capital. CCIX public warrants and CCIX private placement warrants: These warrants were accounted for as equity instruments in the historical financial statements of CCIX. Management has preliminarily concluded that equity classification for the CCIX public warrants and CCIX private placement warrants continues to be appropriate. The final accounting treatment related to the business combination, including the Earnout Shares, CCIX public warrants, and CCIX private placement warrants, will be finalized and reported in the first reporting period following the consummation of the business combination.

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Unaudited Pro Forma Conden sed Combined Balance Sheet As of September 30, 2025 ( in thousands )

| Assets                                                                                  
 Current assets                                                                          |     | CCIX Historical 
 (Note 2)        |         |     | PlusAI     
 Historical 
 Adjusted   
 (Note 3)   |        |     | No Redemption 
 Scenario      
 Transaction   
 Accounting    
 Adjustments   
 (Note 4)      |          |   |    | Pro Forma 
 Combined  |         |     | 25% Redemption 
 Scenario       
 Transaction    
 Accounting     
 Adjustments    
 (Note 4)       |          |   |    | Pro Forma 
 Combined  |         |     | 50% Redemption 
 Scenario       
 Transaction    
 Accounting     
 Adjustments    
 (Note 4)       |          |   |    | Pro Forma 
 Combined  |         |