BZAI

SEC source: 0002123306-26-000006 · wk-form4_1791927562.xml · derivative · entry 3

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,500

Underlying: Common Stock · 2,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: These time based restricted stock units vest in eight quarterly installments, commencing April 12, 2026.

F3 · derivative.exercise_date: These time based restricted stock units vest in eight quarterly installments, commencing April 12, 2026.

F3 · derivative.expiration_date: These time based restricted stock units vest in eight quarterly installments, commencing April 12, 2026.

SEC source: 0002123306-26-000006 · wk-form4_1791927562.xml · nonDerivative · entry 2

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,282

SEC source: 0002123306-26-000006 · wk-form4_1791927562.xml · nonDerivative · entry 1

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,891

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the conversion of restricted stock units that vested on October 12, 2026.

F2 · price: Each restricted stock unit represents a contingent right to receive one share of Blaize Holdings, Inc. common stock.

SEC source: 0002123334-26-000003 · wk-form4_1788290818.xml · derivative · entry 3

Evans Kimberly Peterson · CIK 0002123334 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,250

Underlying: Common Stock · 18,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Vesting of these RSUs commenced 25% on June 1, 2026, and quarterly thereafter.

F3 · derivative.exercise_date: Vesting of these RSUs commenced 25% on June 1, 2026, and quarterly thereafter.

F3 · derivative.expiration_date: Vesting of these RSUs commenced 25% on June 1, 2026, and quarterly thereafter.

SEC source: 0002123334-26-000003 · wk-form4_1788290818.xml · nonDerivative · entry 2

Evans Kimberly Peterson · CIK 0002123334 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,033

SEC source: 0002123334-26-000003 · wk-form4_1788290818.xml · nonDerivative · entry 1

Evans Kimberly Peterson · CIK 0002123334 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,761

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the conversion of restricted stock units that vested on September 1, 2026.

F2 · price: Each restricted stock unit represents a contingent right to receive one share of Blaize Holdings, Inc. common stock.

SEC source: 0001871638-26-000053 · wk-form4_1786997978.xml · derivative · entry 1

Lauk Kurt J · CIK 0001290008 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 618,556

Underlying: Common Stock · 618,556 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Blaize Holdings, Inc. common stock.

F2 · derivative.exercise_date: These restricted stock units vest in three equal annual installments, commencing on the one-year anniversary of the grant date, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

F2 · derivative.expiration_date: These restricted stock units vest in three equal annual installments, commencing on the one-year anniversary of the grant date, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

SEC source: 0002123306-26-000004 · wk-form4_1783974928.xml · derivative · entry 3

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 2,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: These time based restricted stock units vest in eight quarterly installments, commencing April 12, 2026.

F3 · derivative.exercise_date: These time based restricted stock units vest in eight quarterly installments, commencing April 12, 2026.

F3 · derivative.expiration_date: These time based restricted stock units vest in eight quarterly installments, commencing April 12, 2026.

SEC source: 0002123306-26-000004 · wk-form4_1783974928.xml · nonDerivative · entry 2

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,391

SEC source: 0002123306-26-000004 · wk-form4_1783974928.xml · nonDerivative · entry 1

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the conversion of restricted stock units that vested on July 12, 2026.

F2 · price: Each restricted stock unit represents a contingent right to receive one share of Blaize Holdings, Inc. common stock.

SEC source: 0001733859-26-000003 · wk-form4_1783647901.xml · nonDerivative · entry 1

Bess Lane · CIK 0001733859 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Bess Ventures and Advisory, LLC

Disclosed balance after: 14,446,783

F1 · kind: These shares were issued to Bess Ventures and Advisory, LLC ("Bess Ventures") in settlement of a certain disagreement between the Issuer and Bess Ventures related to a letter agreement dated February 15, 2024, and matters arising thereunder.

F1 · price: These shares were issued to Bess Ventures and Advisory, LLC ("Bess Ventures") in settlement of a certain disagreement between the Issuer and Bess Ventures related to a letter agreement dated February 15, 2024, and matters arising thereunder.

F2 · ownership.nature: The reporting person is the managing member and owner of Bess Ventures and therefore may be deemed to share beneficial ownership over such shares.

SEC source: 0002048317-26-000005 · wk-form4_1783552472.xml · derivative · entry 3

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,169

Underlying: Common Stock · 50,000 shares

Expires 2033-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

F5 · price: Represents securities received as part of the Issuer's business combination, in connection with that certain Agreement and Plan of Merger, dated as of December 22, 2023 and amended on April 22, 2024, October 24, 2024, and November 21, 2024 (the "Merger Agreement") by and among the Issuer (formerly BurTech Acquisition Corp.), BurTech Merger Sub, Inc., Blaize, Inc. ("Legacy Blaize"), and for the limited purposes set forth therein, Burkhan Capital LLC, pursuant to which securities of Legacy Blaize were automatically converted into the right to receive stock options of the Issuer as set forth in the Merger Agreement.

F4 · derivative.exercise_date: The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.

SEC source: 0002048317-26-000005 · wk-form4_1783552472.xml · nonDerivative · entry 2

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F2 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.33 to $1.38, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048317-26-000005 · wk-form4_1783552472.xml · nonDerivative · entry 1

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

SEC source: 0002048383-26-000004 · wk-form4_1783376396.xml · nonDerivative · entry 1

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 259,773

F1 · shares: The reported sale of shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.33 to $1.40, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048317-26-000003 · wk-form4_1781101812.xml · derivative · entry 3

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 62,169

Underlying: Common Stock · 50,000 shares

Expires 2033-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

F5 · price: Represents securities received as part of the Issuer's business combination, in connection with that certain Agreement and Plan of Merger, dated as of December 22, 2023 and amended on April 22, 2024, October 24, 2024, and November 21, 2024 (the "Merger Agreement") by and among the Issuer (formerly BurTech Acquisition Corp.), BurTech Merger Sub, Inc., Blaize, Inc. ("Legacy Blaize"), and for the limited purposes set forth therein, Burkhan Capital LLC, pursuant to which securities of Legacy Blaize were automatically converted into the right to receive stock options of the Issuer as set forth in the Merger Agreement.

F4 · derivative.exercise_date: The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.

SEC source: 0002048317-26-000003 · wk-form4_1781101812.xml · nonDerivative · entry 2

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F2 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.65 to $1.70, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048317-26-000003 · wk-form4_1781101812.xml · nonDerivative · entry 1

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

SEC source: 0002123334-26-000002 · wk-form4_1780524258.xml · derivative · entry 3

Evans Kimberly Peterson · CIK 0002123334 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 225,000

Underlying: Common Stock · 75,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The restricted stock units vest 25% on June 1, 2026, and quarterly thereafter.

F3 · derivative.exercise_date: The restricted stock units vest 25% on June 1, 2026, and quarterly thereafter.

F3 · derivative.expiration_date: The restricted stock units vest 25% on June 1, 2026, and quarterly thereafter.

SEC source: 0002123334-26-000002 · wk-form4_1780524258.xml · nonDerivative · entry 2

Evans Kimberly Peterson · CIK 0002123334 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,011

SEC source: 0002123334-26-000002 · wk-form4_1780524258.xml · nonDerivative · entry 1

Evans Kimberly Peterson · CIK 0002123334 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the conversion of restricted stock units that vested on June 1, 2026.

F2 · price: Each restricted stock unit represents a contingent right to receive one share of Blaize Holdings, Inc. common stock.

SEC source: 0002048383-26-000003 · wk-form4_1780523396.xml · nonDerivative · entry 1

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 300,382

F1 · shares: The reported sale of shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.71 to $1.92, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048317-26-000002 · wk-form4_1778632717.xml · derivative · entry 3

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 112,169

Underlying: Common Stock · 50,000 shares

Expires 2033-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

F5 · price: Represents securities received as part of the Issuer's business combination, in connection with that certain Agreement and Plan of Merger, dated as of December 22, 2023 and amended on April 22, 2024, October 24, 2024, and November 21, 2024 (the "Merger Agreement") by and among the Issuer (formerly BurTech Acquisition Corp.), BurTech Merger Sub, Inc., Blaize, Inc. ("Legacy Blaize"), and for the limited purposes set forth therein, Burkhan Capital LLC, pursuant to which securities of Legacy Blaize were automatically converted into the right to receive stock options of the Issuer as set forth in the Merger Agreement.

F4 · derivative.exercise_date: The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.

SEC source: 0002048317-26-000002 · wk-form4_1778632717.xml · nonDerivative · entry 2

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F2 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.78 to $1.88, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048317-26-000002 · wk-form4_1778632717.xml · nonDerivative · entry 1

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

SEC source: 0001213900-26-055057 · ownership.xml · nonDerivative · entry 1

Bess Ventures & Advisory, LLC · CIK 0002068418 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,653,976

F1 · kind: This transaction is exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended, pursuant to the terms of the statute, because the shares were "acquired in good faith in connection with a debt previously contracted."

F2 · price: The price reported on Column 4 is the price at market open on May 8, 2026, reflecting the portion of the loan balance being satisfied by these shares.

SEC source: 0001733859-26-000001 · wk-form4_1778627791.xml · nonDerivative · entry 1

Bess Lane · CIK 0001733859 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Bess Ventures and Advisory, LLC

Disclosed balance after: 12,446,783

F1 · kind: Represents shares of Issuer's common stock acquired by Bess Ventures and Advisory, LLC in good faith in connection with a debt previously contracted. Accordingly, such acquisition is exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended.

F1 · price: Represents shares of Issuer's common stock acquired by Bess Ventures and Advisory, LLC in good faith in connection with a debt previously contracted. Accordingly, such acquisition is exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended.

F2 · balance_after: In the reporting person's prior Form 4 filings, earnout shares and restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing.

F3 · ownership.nature: The reporting person is the managing member and owner of Bess Ventures and Advisory, LLC and therefore may be deemed to share beneficial ownership over such shares.

SEC source: 0002048383-26-000002 · wk-form4_1778030068.xml · nonDerivative · entry 1

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 340,991

F1 · shares: The reported sale of shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.89 to $2.06, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048383-26-000001 · wk-form4_1776879377.xml · derivative · entry 3

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 269,176

Underlying: Common Stock · 505,060 shares

Expires 2033-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 505,060 stock options underlying 505,060 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025 (the "10b5-1 trading plan").

F6 · price: Represents securities received as part of the Issuer's business combination, in connection with that certain Agreement and Plan of Merger, dated as of December 22, 2023 and amended on April 22, 2024, October 24, 2024, and November 21, 2024 (the "Merger Agreement") by and among the Issuer (formerly BurTech Acquisition Corp.), BurTech Merger Sub, Inc., Blaize, Inc. ("Legacy Blaize"), and for the limited purposes set forth therein, Burkhan Capital LLC, pursuant to which securities of Legacy Blaize were automatically converted into the right to receive stock options of the Issuer as set forth in the Merger Agreement.

F5 · derivative.exercise_date: The stock option vests in 36 substantially equal monthly installments beginning on October 19, 2023.

SEC source: 0002048383-26-000001 · wk-form4_1776879377.xml · nonDerivative · entry 2

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 381,600

F3 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.19 to $2.38, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048383-26-000001 · wk-form4_1776879377.xml · nonDerivative · entry 1

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 505,060

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 505,060 stock options underlying 505,060 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025 (the "10b5-1 trading plan").

F2 · balance_after: In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing.

SEC source: 0002048309-26-000004 · wk-form4_1776724508.xml · derivative · entry 3

Munagala Dinakar · CIK 0002048309 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,100,347

Underlying: Common Stock · 50,000 shares

Expires 2033-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025 (the "10b5-1 trading plan").

F6 · price: Represents securities received as part of the Issuer's business combination, in connection with that certain Agreement and Plan of Merger, dated as of December 22, 2023 and amended on April 22, 2024, October 24, 2024, and November 21, 2024 (the "Merger Agreement") by and among the Issuer (formerly BurTech Acquisition Corp.), BurTech Merger Sub, Inc., Blaize, Inc. ("Legacy Blaize"), and for the limited purposes set forth therein, Burkhan Capital LLC, pursuant to which securities of Legacy Blaize were automatically converted into the right to receive stock options of the Issuer as set forth in the Merger Agreement.

F5 · derivative.exercise_date: The stock option vests in 36 substantially equal monthly installments beginning on October 19, 2023.

SEC source: 0002048309-26-000004 · wk-form4_1776724508.xml · nonDerivative · entry 2

Munagala Dinakar · CIK 0002048309 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 551,422

F3 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.50 to $2.63, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048309-26-000004 · wk-form4_1776724508.xml · nonDerivative · entry 1

Munagala Dinakar · CIK 0002048309 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 601,422

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025 (the "10b5-1 trading plan").

F2 · balance_after: In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing.

SEC source: 0002048309-26-000005 · wk-form4a_1781126035.xml · nonDerivative · entry 1

Munagala Dinakar · CIK 0002048309 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 501,422

F1 · shares: On April 20, 2026, the reporting person filed a Form 4 (the "Original Form 4") which inadvertently reported that the reporting person exercised a stock option and sold the underlying stock. Instead, as reported in this amendment (this "Amendment"), the reporting person did not exercise the stock option and in fact sold the same number of shares of stock as originally reported in the Original Form 4 but from his Table I holdings. The reporting person's other holdings have been restated for convenience, and there have been no transactions in such holdings since the Original Form 4. The order of the footnotes in this Explanation of Responses section have been conformed to the above changes.

F2 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.50 to $2.63, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

F4 · balance_after: In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing.

SEC source: 0002123306-26-000002 · wk-form4_1776198622.xml · derivative · entry 2

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,500

Underlying: Common Stock · 2,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The restricted stock units vest on a quarterly basis in eight equal installments commencing on April 12, 2026.

F3 · derivative.exercise_date: The restricted stock units vest on a quarterly basis in eight equal installments commencing on April 12, 2026.

F3 · derivative.expiration_date: The restricted stock units vest on a quarterly basis in eight equal installments commencing on April 12, 2026.

SEC source: 0002123306-26-000002 · wk-form4_1776198622.xml · nonDerivative · entry 1

Patak Stephen Paul · CIK 0002123306 · Chief Revenue Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,500

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the conversion of restricted stock units that vested on April 12, 2026.

F2 · price: Each restricted stock unit represents a contingent right to receive one share of Blaize Holdings, Inc. common stock.

SEC source: 0002048317-26-000001 · wk-form4_1775664807.xml · derivative · entry 6

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 162,169

Underlying: Common Stock · 50,000 shares

Expires 2033-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

F7 · price: Represents securities received as part of the Issuer's business combination, in connection with that certain Agreement and Plan of Merger, dated as of December 22, 2023 and amended on April 22, 2024, October 24, 2024, and November 21, 2024 (the "Merger Agreement") by and among the Issuer (formerly BurTech Acquisition Corp.), BurTech Merger Sub, Inc., Blaize, Inc. ("Legacy Blaize"), and for the limited purposes set forth therein, Burkhan Capital LLC, pursuant to which securities of Legacy Blaize were automatically converted into the right to receive stock options of the Issuer as set forth in the Merger Agreement.

F6 · derivative.exercise_date: The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.

SEC source: 0002048317-26-000001 · wk-form4_1775664807.xml · nonDerivative · entry 2

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F3 · shares: The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.72 to $1.79, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.

SEC source: 0002048317-26-000001 · wk-form4_1775664807.xml · nonDerivative · entry 1

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reported exercise of 50,000 stock options underlying 50,000 shares of the Issuer's common stock was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2025 (the "10b5-1 trading plan").

F2 · balance_after: In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing.

SEC source: 0001193125-26-140862 · ownership.xml · nonDerivative · entry 1

Ava Investors SA · CIK 0002048130 · 10% owner

Ava Private Markets S.a r.l. · CIK 0002048126 · 10% owner

Mahieu Raphaelle · CIK 0002048145 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 11,737,254

F1 · kind: The securities were distributed for no consideration.

F1 · price: The securities were distributed for no consideration.

F2 · balance_after: Consists of 11,737,254 shares of Common Stock of the Issuer held by Ava Private Markets S.a r.l. ("Ava Private Markets") and affiliates. Ava Investors S.A. is the investment manager of Ava Private Markets and exercises investment power with respect to the securities held by Ava Private Markets. Raphaelle Mahieu and Benjamin Hazan may be deemed to exercise investment power with respect to the securities. Each of the persons above disclaims any beneficial ownership of the securities, except to the extent of any pecuniary interest therein. Excludes securities beneficially owned by Barthelemy Debray. Mr. Debray no longer serves as a director or manager of Ava Investors S.A. or Ava Private Markets S.a r.l., respectively, and has ceased to be a Reporting Person for purposes of this Form 4.

F2 · ownership.nature: Consists of 11,737,254 shares of Common Stock of the Issuer held by Ava Private Markets S.a r.l. ("Ava Private Markets") and affiliates. Ava Investors S.A. is the investment manager of Ava Private Markets and exercises investment power with respect to the securities held by Ava Private Markets. Raphaelle Mahieu and Benjamin Hazan may be deemed to exercise investment power with respect to the securities. Each of the persons above disclaims any beneficial ownership of the securities, except to the extent of any pecuniary interest therein. Excludes securities beneficially owned by Barthelemy Debray. Mr. Debray no longer serves as a director or manager of Ava Investors S.A. or Ava Private Markets S.a r.l., respectively, and has ceased to be a Reporting Person for purposes of this Form 4.

SEC source: 0001628280-25-055584 · wk-form4_1764968678.xml · nonDerivative · entry 1

de Urioste George · CIK 0001270068 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,619

F1 · shares: Represents an award of restricted stock units granted at the Issuer's 2025 Annual Meeting under the Non-Employee Director Compensation Program, which vest at the ealier of one year or the Issuer's next Annual Meeting.

SEC source: 0001628280-25-055576 · wk-form4_1764968545.xml · nonDerivative · entry 1

FUJIMORI YOSHIAKI · CIK 0001233160 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,619

F1 · shares: Represents an award of restricted stock units granted at the Issuer's 2025 Annual Meeting under the Non-Employee Director Compensation Program, which vest at the ealier of one year or the Issuer's next Annual Meeting.

SEC source: 0001628280-25-055579 · wk-form4_1764968587.xml · nonDerivative · entry 1

Hambrecht Juergen · CIK 0001634906 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 378,757

F1 · shares: Represents an award of restricted stock units granted at the Issuer's 2025 Annual Meeting under the Non-Employee Director Compensation Program, which vest at the ealier of one year or the Issuer's next Annual Meeting.

F2 · balance_after: Includes 90,999 Earn-Out Shares, each of which represents a contingent right to receive one share of Common Stock if the trading price of the Issuer's Common Stock exceeds certain thresholds.

SEC source: 0001628280-25-055582 · wk-form4_1764968633.xml · nonDerivative · entry 1

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 379,085

F1 · shares: Represents an award of restricted stock units granted at the Issuer's 2025 Annual Meeting under the Non-Employee Director Compensation Program, which vest at the ealier of one year or the Issuer's next Annual Meeting.

F2 · balance_after: Includes 91,327 Earn-Out Shares, each of which represents a contingnt right to receive one share of Common Stock if the trading price of the Issuer's Common Stock exceeds certain thresholds.

SEC source: 0001628280-25-055571 · wk-form4_1764968437.xml · nonDerivative · entry 1

Frank Edward H. · CIK 0001589827 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 378,757

F1 · shares: Represents an award of restricted stock units granted at the Issuer's 2025 Annual Meeting under the Non-Employee Director Compensation Program, which vest at the ealier of one year or the Issuer's next Annual Meeting.

F2 · balance_after: Includes 90,999 Earn-Out Shares, each of which represents a contingent right to receive one share of Common Stock if the trading price of the Issuer's Common Stock exceeds certain thresholds.

SEC source: 0001193125-25-194996 · ownership.xml · derivative · entry 1

Sehmi Harminder · CIK 0002048383 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2035-08-31

F1 · derivative.exercise_date: The stock option vests in 8 substantially equal quarterly installments beginning on December 1, 2025.

SEC source: 0000950170-25-093394 · ownership.xml · nonDerivative · entry 1

Cannestra Anthony · CIK 0002048317 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,827

F1 · kind: Represents an award of restricted stock units which vest in accordance with the applicable grant agreement.

F2 · balance_after: Includes 91,327 Earn-Out Shares, each of which represents a contingent right to receive one share of Common Stock if the trading price of the Issuer's Common Stock exceeds certain thresholds.

SEC source: 0000950170-25-093390 · ownership.xml · nonDerivative · entry 1

Bess Lane · CIK 0001733859 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,591

F1 · kind: Represents an award of restricted stock units which vest in accordance with the applicable grant agreement.

F2 · balance_after: Includes 47,341 Earn-Out Shares, each of which represents a contingent right to receive one share of Common Stock if the trading price of the Issuer's Common Stock exceeds certain thresholds.

SEC source: 0000950170-25-093377 · ownership.xml · nonDerivative · entry 1

Frank Edward H. · CIK 0001589827 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,499

F1 · kind: Represents an award of restricted stock units which vest in accordance with the applicable grant agreement.

F2 · balance_after: Includes 90,999 Earn-Out Shares, each of which represents a contingent right to receive one share of Common Stock if the trading price of the Issuer's Common Stock exceeds certain thresholds.