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Convertible Notes and Demand Notes | 9 Months Ended | 12 Months Ended
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Sep. 30, 2025 | Dec. 31, 2024
Convertible Notes and Demand Notes [Abstract] |  |
Convertible Notes and Demand Notes | Note 9. Convertible Notes and Demand Notes Pay-to-Play Convertible Notes In December 2022, in connection with the Company’s 2022 Pay-to-Play (“P2P”) transaction (the “P2P Transaction”), the Company entered into a Note Purchase and Exchange Agreement (“2022 P2P NPA”) with a group of lenders (each, a “Lender” and collectively, the “Lenders”). In January and February of 2023, the Company received $9.3 million in proceeds from the issuance of P2P Notes. Amounts received in 2022 and 2023 are referred to collectively as the “P2P Notes” (see Note 16). Pursuant to the 2022 P2P NPA, each Lender will pay the Company an agreed upon amount (“Consideration”) in return for one or more promissory notes. The P2P Notes had an initial 24-month term from the date of the 2022 P2P NPA, which is December 9, 2024. The 2022 P2P NPA provided that the P2P Notes would be converted upon the consummation of the Merger and that, at such time, all outstanding principal and unpaid accrued interest due on the P2P Notes shall be converted into common stock. The Company elected to measure the P2P Notes in their entirety, for the respective period issued, at fair value with changes in fair value reported in a single line in the condensed consolidated statements of operations. The notes were fair valued using a scenario-based method, considering varying levels of participation and four future event scenarios: Next Equity Financing, Maturity Conversion, Corporate Transaction, and Default. The conversion payout was calculated for each assumed event scenario, with probabilities estimated by management. The payout of the P2P Notes under each event scenario were discounted back to the valuation date using a discount rate aligned with the Company’s credit rating and the weighted average present value of each scenario used for the fair value of the P2P Notes. Upfront costs and fees related to items for which the fair value option is elected must be recognized immediately. As such issuance costs (warrants) and fees associated with the convertible notes were recognized in current earnings. Under the terms of the 2022 P2P NPA, any existing investor that purchased any P2P Note received the right to exchange the common stock held following the November 30, 2022 conversion event, for a number of shares of shadow preferred stock mirroring the respective classes of preferred stock held prior to the conversion (the “Pull-Through Exchange”), however, all Senior Series D shareholders received an automatic pull-through of their converted common stock into their respective Senior Series D Shadow preferred stock regardless of whether they invested in a P2P Note. The exchange was calculated using a defined “Exchange Formula” based on the existing investor’s amount of investment in the P2P Note in relation to the designated pro-rata share portion of the Insider Amount. To the extent that an eligible existing investor purchased P2P Notes representing less than its pro rata portion of the Insider Amount, such investor’s converted common stock remained as converted common stock for that portion equal to the shortfall in its pro-rata contribution. Additionally, investors in the P2P Notes also received warrants (the “P2P Warrants”) whose total exercise price is determined based on the timing of investment as well as the level of investor participation vis-à-vis each investor’s designated pro-rata portion. In November 2023, the Company entered into an Exchange Agreement with eligible common shareholders, as defined, whereby each participating eligible common shareholder received a P2P Note, subject to the same terms as existing P2P Notes with the exception that the P2P Notes issued to these common shareholders did not include the right to receive P2P Warrants. Proceeds received under the Exchange Agreement totaled $0.1 million. Upon the consummation of the Merger, as provided by the terms of the P2P notes, the outstanding P2P Notes were converted, at the discretion of the holders, to shares of common stock (see Note 3). 2023 Convertible Notes From July 2023 through November 2023, the Company raised $12.3 million in convertible notes (the “2023 Convertible Notes”) under the note purchase agreement dated July 3, 2023, as amended on August 1, 2023, to refine the valuation cap definition (the “2023 NPA”). The 2023 Convertible Notes accrued interest at 10.0% per annum. During the year ended December 31, 2024, the Company received $110.7 million in additional proceeds from the issuance of 10.0% secured convertible notes under the 2023 NPA. The 2023 NPA was amended and restated on April 22, 2024 to accommodate a new group of lenders, the “Final Closing Lenders,” defined as any lender who purchases a related convertible note on or after April 22, 2024. The conversion price upon a SPAC Transaction for a Final Closing Lender is defined as a price per share that would entitle the Final Closing Lender to receive a number of BurTech Class A common stock equal to the outstanding principal and accrued interest divided by five. In addition, the per share exercise price of the related 2023 Convertible Note Warrants upon a SPAC Transaction was amended to $11.50. As of the April 22, 2024 amendment, the convertible notes were subject to automatic conversion upon the consummation of a SPAC Transaction. Investors in these secured convertible notes also received warrants to purchase equity shares of the Company. Of the $110.7 million in proceeds received during the year ended December 31, 2024, $11.5 million was received from BurTech (see Note 1), $2.4 million from miscellaneous parties, and $96.8 million from a separate third-party group of investors (the “RT Parties”) in connection with an agreement to provide convertible note financing of up to $125.0 million (the “Blaize Note Financing Agreement”). Under this separate agreement, the RT Parties and their transferees or distributees were not required to execute any lock-up or similar agreement restricting transfer or disposition of all shares of the Company’s common stock issuable upon the conversion of the notes, all Company shares issuable upon the exercise of warrants issued to the RT Parties, and all securities of Blaize to be issued to the RT Parties upon the consummation of the Merger. The Company elected to measure the 2023 Convertible Notes in their entirety at fair value with changes in fair value reported in a single line in the condensed consolidated statements of operations. The 2023 Convertible Notes were fair valued using a scenario-based method, considering five future event scenarios: Next Equity Financing, Maturity Conversion, SPAC Conversion, Corporate Transaction, and Default. The conversion payout was calculated for each assumed event scenario, with probabilities estimated by management. The payout of the 2023 Convertible Notes under each event scenario were discounted back to the valuation date using a discount rate aligned with the Company’s credit rating and the weighted average present value of each scenario used for the fair value of the 2023 Convertible Notes. Upfront costs and fees related to items for which the fair value option is elected must be recognized immediately. As such, issuance costs (warrants) and fees associated with the convertible notes were recognized in earnings in the years that they were issued. One investor who purchased a 2023 Convertible Note also received an RSU grant for a total of 6,000,000 RSUs (see Note 16), which vested in full in the year ended December 31, 2023. Upon the consummation of the Merger, as provided by the terms of the 2023 Convertible Note Agreement, the outstanding 2023 Convertible Notes were converted, at the discretion of the holders, to shares of common stock (see Note 3). The warrants issued in conjunction with the 2023 Convertible Notes were not exercised. Working Capital Loan On February 1, 2023, BurTech issued an unsecured convertible promissory note to BurTech LP (the “Working Capital Loan”), pursuant to which it borrowed $1.5 million for general corporate purposes. Such loan may, at BurTech LP’s discretion, be converted into shares of common stock, the number of shares of which will be determined by dividing the sum of the outstanding principal amount by $10.00. The Working Capital Loan will not bear interest and will be repayable, if not converted or repaid on the effective date of the Merger. The maturity date of the Working Capital Loan may be accelerated upon the occurrence of an event of default (as defined under the Working Capital Loan). As of September 30, 2025 and December 31, 2024, the Company had outstanding Working Capital Loans of $1.5 million and zero, respectively. Advances from Related Party On January 13, 2025, BurTech LP provided working capital and extension deposits on behalf of BurTech. These amounts are reflected on the condensed consolidated balance sheets as advances from related party. These advances are non-interest bearing and payable on demand. As of September 30, 2025 and December 31, 2024, the Company had outstanding advances from the related party in the amount of $2.9 million and zero, respectively. | Note 7. Convertible Notes and Demand Notes 2022 Convertible Securities: Pay-to-Play Convertible Notes: In December 2022, in connection with the Company’s 2022 Pay-to-Play (“P2P”) transaction (the “P2P Transaction”), the Company entered into a Note Purchase and Exchange Agreement (“2022 P2P NPA”) with a group of lenders (each, a “Lender” and collectively, the “Lenders”). In January and February of 2023, the Company received $ 9.3 million in proceeds from the issuance of P2P Notes. Amounts received in 2022 and 2023 are referred to collectively as the “P2P Notes” (see Note 13). Pursuant to the 2022 P2P NPA, each Lender will pay the Company an agreed upon amount (“Consideration”) in return for one or more prom is sory notes. The P2P Notes have a 24-month term from the date of the 2022 P2P NPA which is December 9, 2024 . The 2022 P2P NPA provides that the P2P Notes may be converted as follows:
| • |  | Automatically upon a “Next Equity Financing” assuming a Corporate Transaction (as defined), Maturity Conversion (as defined) or repayment has not occurred wherein the Next Equity Financing is defined as the next sale of Company equity securities, including warrants, other than Series D-2 Preferred stock or warrants to purchase Series D-2 preferred stock, following the date of the 2022 P2P NPA for the purpose of raising capital with gross proceeds of at least $ 5 million excluding the P2P Notes.
| • |  | If the Next Equity Financing conversion, Corporate Transaction conversion or repayment of the outstanding principal and unpaid accrued interest has not occurred on or before the maturity date (December 9, 2024),
| the principal and unpaid accrued interest of each P2P Note shall, at the written election of the Requisite Noteholders (holders of a majority interest in the aggregate outstanding principal amount of the P2P Notes) and the Company, pursuant to mutually agreed-upon terms, be automatically converted (the “Maturity Conversion”) into a class of equity shares subject to mutual agreement between the Lenders and the Company.
| • |  | In the event of a Corporate Transaction (any “Liquidation Event” as defined in the existing Certificate of Incorporation), the P2P Notes shall either be repaid or, at the option of the Requisite Noteholders, converted. If conversion is elected upon a Corporate Transaction, the 2022 P2P NPA provides that all outstanding principal and unpaid accrued interest due on the P2P Notes shall be converted into common stock.
| • |  | If upon a Corporate Transaction, repayment is elected by the Requisite Noteholders, the amount of the outstanding P2P Note balance will be repaid based on (i) whether or not the Lender provided consideration less than, equal to or greater than their Pro Rata Portion (calculated as the percentage ownership in Preferred Stock held by the lender) of $20 million (the “Insider Amount”) by (2) the date of Contribution being either prior to November 30, 2022 (the “Initial Commitment Date”) or February 24, 2023 (“Final Closing date”).
| • |  | New Lenders will receive payment equal to the then accrued and unpaid interest plus one and a half times (1.5X) the then outstanding principal, plus two times (2X) the outstanding principal (with respect only to the outstanding principal in excess of $1 million but less than $5 million), as applicable, plus three times (3X) the outstanding principal with respect only to the outstanding principal in excess of $5 million on the P2P Note.
Certain Lenders, who are also a holder of one or more P2P Notes, by either the Initial Commitment Date or the Final Closing Date, may also be entitled to receive warrants (“P2P Warrants”) to purchase equity securities of the Company, upon surrendering their P2P Notes to the Company, the number of which is to be determined by the type of shares into which the P2P Notes are converted as well as the level of investment. The Warrants will be exercisable, in whole or in part, during the term commencing on the date of issuance and ending December 9, 2025 (see Notes 8 and 13). The Company elected to measure the P2P Notes in their entirety, for the respective period issued, at fair value with changes in fair value reported in a single line in the consolidated statements of operations. The notes were fair valued using a scenario-based method, considering varying levels of participation and four future event scenarios: Next Equity Financing, Maturity Conversion, Corporate Transaction, and Default. The conversion payout was calculated for each assumed event scenario, with probabilities estimated by management. The payout of the P2P Notes under each event scenario were discounted back to the valuation date using a discount rate aligned with the Company’s credit rating and the weighted average present value of each scenario used for the fair value of the P2P Notes. For the years ended December 31, 2024 and 2023, the Company recognized a change in fair value from the P2P Notes of approximately $ 1.3 million and $ 2.6 million, respectively (see Notes 4 and 13). Upfront costs and fees related to items for which the fair value option is elected must be recognized immediately. As such issuance costs (warrants) and fees associated with the convertible notes were recognized in current earnings. Under the terms of the 2022 P2P NPA, any existing investor that purchased any P2P Note, received the right to exchange the common stock held following the November 30, 2022 conversion event (the “Converted Common”) for a number of shares of shadow preferred stock mirroring the respective classes of preferred stock held prior to the conversion (the “Pull-Through Exchange”), however, all Senior Series D (see Note 10) shareholders received an automatic pull-through of their Converted Common into their respective Senior Series D Shadow preferred stock regardless of whether they invested in a P2P Note. The exchange was calculated using a defined “Exchange Formula” based on the existing investor’s amount of investment in the P2P Note in relation to the designated pro-rata share portion of the Insider Amount. To the extent that an eligible existing investor purchases P2P Notes representing less than its pro rata portion of the Insider Amount, such investors Converted Common remain as Converted Comm on shares for that portion equal to the shortfall in its pro-rata contribution (see Note 10). Additionally, investors in the P2P Notes also received warrants (the “P2P Warrants”) whose total exercise price is determined based on the timing of investment as well as the level of investor participation vis-à-vis each investor’s designated pro-rata portion (see Note 8). During the year ended December 31, 2023, certain investors who previously had their preferred stock and Series D warrants converted to common stock and common stock warrants, respectively, in connection with the 2022 conversion event, invested in P2P Notes. The resulting Pull-Through Exchange reinstated their Converted Common stock into share of the class(es) of Shadow Preferred Stock identical to those held prior to the 2022 conversion event (See Note 10) and reinstated their warrants into Series D Shadow preferred stock warrants (see Note 8). The fair value of the Series D warrants at reinstatement, approximating $ 61,000 , was recognized as a component of the Pay-to-Play financing charge for the year ended December 31, 2023. The 2022 P2P NPA provided the Company a right, subject to the approval of the Company’s Board of Directors (the “Board”), to conduct a common rights offering (the “Offering”) to raise additional funds. Pursuant to the 2022 P2P NPA, at the discretion of the Board, the Company could issue either shares of common stock or additional P2P Notes. In November 2023, the Company entered into an Exchange Agreement with eligible common shareholders, as defined, whereby, each participating eligible common shareholder received a P2P Note, subject to the same terms as existing P2P Notes with the exception that the P2P Notes issued to these common shareholders did not include the right to receive P2P Warrants. Proceeds received under the Offering totaled $ 0.1 million. In addition to the P2P Note, each participating eligible common shareholder also received the right to have the number of common shares held immediately prior to the Offering restored to the total number of common shares held prior to the Company’s 2022 reverse stock-split. For the year ended December 31, 2023, this restoration of common shares resulted in incremental value to the participating eligible common investors of $ 5.2 million, measured as the fair value of the incremental common shares received or restored following the Offering. This incremental value has been accounted for as a Pay-to-Play financing charge in the accompanying consolidated statements of operations. During the year ended December 31, 2024, the Company did not enter into any Exchange Agreements with eligible common shareholders. On the Closing Date, as provided by the terms of the P2P notes, the outstanding P2P Notes were converted, at the option of the holders, to common stock upon the execution of the Merger (see Note 1). 2023 Convertible Notes: From July 2023 through November 2023, the Company raised $ 12.3 million in convertible notes (the “2023 Convertible Notes”) under the note purchase agreement dated July 3, 2023, as amended on August 1, 2023 to refine the valuation cap definition (the “2023 NPA”) (see Note 13). The 2023 Convertible Notes accrue interest at 10 % per annum and mature 18 months from the date of the 2023 NPA. The 2023 Convertible Notes are secured by all of the Company’s assets. During the year ended December 31, 2024, the Company received $ 110.7 million in additional proceeds from the issuance of 10 % secured convertible notes under the 2023 NPA. The 2023 NPA was amended and restated on April 22, 2024 to accommodate a new group of lenders, the “Final Closing Lender”, defined as any lender who purchases a related convertible note on or after April 22, 2024. The conversion price upon a SPAC Transaction for a Final Closing Lender is defined as a price per share that would entitle the Final Closing Lender to receive a number of BurTech Class A common stock equal to the outstanding principal and accrued interest divided by five (5). In addition, the per share exercise price of the related 2023 Convertible Note Warrants upon a SPAC Transaction was amended to $ 11.50 . As of the April 22, 2024 amendment, the convertible notes have a stated maturity date of December 31, 2025, and are subject to automatic conversion upon the consummation of a SPAC Transaction, as defined, subject to conversion or repayment at maturity or upon a Next Equity Financing, as defined, and are subject to repayment upon a Corporate Transaction, as defined. Investors in these secured convertible notes also received warrants to purchase equity shares of the Company. Of t he $ 110.7 million in proceeds received during the year ended December 31, 2024, $ 11.5 million was received from BurTech (see Note 1), $ 2.4 million from miscellaneous parties, and $ 96.8 million from a separate third-party group of investors (the “RT Parties”) in connection with an agreement to provide convertible note financing of up to $ 125.0 million (the “Blaize Note Financing Agreement”). Under this separate agreement, the RT Parties and their transferees or distributes will not be required to execute any lock-up or similar agreement restricting transfer or disposition of all shares of common stock of Blaize issuable upon the conversion of the notes, all Company shares issuable upon the exercise of warrants issued to the RT Parties as well as all securities of New Blaize to be issued to the RT Parties upon consummation of the merger. The 2023 NPA provides that the notes may be converted as follows:
| • |  | Automatically upon a “Next Equity Financing” assuming a Corporate Transaction (as defined), Maturity Conversion (as defined), SPAC Conversion (as defined) or repayment has not occurred wherein the Next Equity Financing, defined as the next sale of Company equity securities or other securities issued in connection with Senior Indebtedness, following the date of the 2023 Convertible Notes for the purpose of raising capital.
| • |  | For Lenders who purchased a 2023 Convertible Note on or before July 3, 2023, the issuance of shares pursuant to the conversion of each note shall be subject to the same terms and conditions applicable to the equity securities sold in the Next Equity Financing, except that (A) the per share liquidation preference shall be 1.5 times the conversion price, (B) the initial conversion price for purposes of price-based anti-dilution protection will equal the conversion price, (C) the basis for any dividend rights will be based on the conversion price, and (D) such shares will rank senior to the other equity securities existing at the time of the applicable conversion with respect to liquidation preference.
| • |  | For any Lender who purchased a 2023 Convertible Note after July 3, 2023, the issuance of shares pursuant to the conversion of each note shall be subject to the same terms as described in the preceding paragraph except that the per share liquidation preference will equal the conversion price.
| • |  | The conversion price for all Lenders, regardless of purchase date, for this Next Equity Financing is the lesser of 80% of the per share issue price of the equity securities sold in this financing event or a calculated per share value based on a defined valuation cap and fully-diluted capital.
| • |  | If the Next Equity Financing conversion, Corporate Transaction conversion, SPAC conversion or repayment of the outstanding principal and unpaid accrued interest has not occurred on or before the maturity date (December 31, 2025), the principal and unpaid accrued interest of each 2023 Convertible Note shall, at the written election of the Requisite Noteholders (which must include certain noteholder), pursuant to mutually agreed-upon terms, be automatically converted (the “Maturity Conversion”) into a class of equity shares subject to mutual agreement between the Lenders and the Company.
| • |  | If the Next Equity Financing conversion, Corporate Transaction conversion or repayment of the outstanding principal and unpaid accrued interest has not occurred prior to a SPAC transaction, the principal and unpaid accrued interest of each 2023 Convertible Note, with the exception of notes issued to a Final Closing Lender, shall automatically convert (the “SPAC Conversion”) into a number of common shares equal to the quotient obtained by dividing the outstanding principal and unpaid accrued interest on each 2023 Convertible Note by the applicable conversion price. The conversion price in this SPAC Conversion is the lesser of 80% of the SPAC price per share or a calculated per share value based on a defined valuation cap and fully-diluted capital immediately prior to the SPAC transaction.
| • |  | In the event of a Corporate Transaction (any “Liquidation Event” as defined in the existing Certificate of Incorporation), the 2023 Convertible Notes shall be repaid as follows at the closing of the Corporate Transaction:
| • |  | For any Lender who purchased a 2023 Convertible Note on or before July 3, 2023, in respect of a Corporate Transaction that occurs on or before July 3, 2024, an amount equal to the then accrued but unpaid interest plus three (3) times the then outstanding principal.
| • |  | For any Lender who purchased a 2023 Convertible Note on or before July 3, 2023, in respect of a Corporate Transaction that occurs after July 3, 2024, an amount equal to the then accrued but unpaid interest plus five (5) times the then outstanding principal.
| • |  | For any Lender who purchased a 2023 Convertible Note after July 3, 2023, in respect of any such Corporate Transaction, an amount equal to the then accrued but unpaid interest plus one and a half (1.5) times the then outstanding principal.
Investors in the 2023 Convertible Notes also received warrants to purchase the same type of equity shares into which the 2023 Convertible Notes are converted (see Notes 8 and 13). Investors in these secured convertible notes also received warrants to purchase equity shares of the Company. The Company elected to measure the 2023 Convertible Notes in their entirety at fair value with changes in fair value reported in a single line in the consolidated statements of operations. The 2023 Convertible Notes were fair valued using a scenario-based method, considering five future event scenarios: Next Equity Financing, Maturity Conversion, SPAC Conversion, Corporate Transaction, and Default. The conversion payout was calculated for each assumed event scenario, with probabilities estimated by management. The payout of the 2023 Convertible Notes under each event scenario were discounted back to the valuation date using a discount rate aligned with the company’s credit rating and the weighted average present value of each scenario used for the fair value of the 2023 Convertible Notes. For the years ended December 31 , 2024 and 2023 , the Company recognized a change in fair value of approximately $ 8.7 million and $ 6.9 million, respectively. Upfront costs and fees related to items for which the fair value option is elected must be recognized immediately. As such issuance costs (warrants) and fees associated with the convertible notes were recognized in current earnings. One investor who purchased a 2023 Convertible Note also received an RSU grant for a total of 6,000,000 RSUs (see Note 13) which originally vested in full on the one-year anniversary of the grant date with such vesting subject to full acceleration upon the consummation of an IPO, SPAC Transaction, Direct Listing or Sale Event, as defined. The RSUs were valued on the date of issuance equal to the fair value of common stock approximating $ 2.6 million and accounted for as Debt Financing Charge on the 2023 Convertible Note. On December 22 , 2023 , the Company modified the RSU terms to immediately accelerate the vesting of the 6,000,000 awards outstanding and issue 6,000,000 shares of common stock (see Note 13) . The scheduled maturities of the Company’s outstanding convertible notes as of December 31, 2024 is as follows (in thousands):
Year ending December 31, 2025 |  | $ | 148,629 |
Less: Current portion |  |  | (148,629 | )
Long-term portion |  | $ | — |
On the Closing Date, as provided by the terms of the 2023 Convertible Note Agreement, the outstanding 2023 Convertible Notes were converted, at the option of the holders, to common stock upon the execution of the Merger (see Note 1). Demand Notes: During the year ended December 31, 2023, the Company issued short-term demand notes totaling $ 5.1 million, of which $ 4.8 million remained outstanding as of December 31 , 2023 . The outstanding notes earn simple interest based on a rate of twelve percent (12 %) with the outstanding principal and all accrued interest due and payable on demand by the holders at any time on or after the earlier of (1) the receipt of a minimum of $ 15.0 million from BurTech and other investors pursuant to the Note Purchase A gree ment dated July 2 , 2023 and (2) March 31 , 2024 (see Note 13) . In April 2024 , the Company repaid the total outstanding principal and interest of $ 5.0 million.

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