Sec Form 4 Filing - Sehmi Harminder @ Blaize Holdings, Inc. - 2026-07-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Sehmi Harminder 2. Issuer Name and Ticker or Trading Symbol Blaize Holdings, Inc. [ BZAI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O BLAIZE HOLDINGS, INC., 4659 GOLDEN FOOTHILL PARKWAY, SUITE 206 3. Date of Earliest Transaction (MM/DD/YY) 07/01/2026 (Street) EL DORADO HILLS, CA95762 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 07/01/2026 S 40,609 ( 1 ) D $ 1.37 ( 2 ) 259,773 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Earnout Shares ( 3 ) ( 3 ) 01/13/2030 Common Stock 212,155 212,155 D Restricted Stock Units ( 4 ) ( 5 ) ( 5 ) Common Stock 362,081 362,081 D Employee Stock Option (right to purchase) $ 0.57 ( 6 ) 09/18/2033 Common Stock 269,176 269,176 D Employee Stock Option (right to purchase) $ 1.18 ( 7 ) 10/23/2034 Common Stock 862,915 862,915 D Employee Stock Option (right to purchase) $ 3.57 ( 8 ) 08/31/2035 Common Stock 200,000 200,000 D Employee Stock Option (right to purchase) $ 14.62 ( 9 ) 10/17/2029 Common Stock 29,436 29,436 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Sehmi Harminder C/O BLAIZE HOLDINGS, INC. 4659 GOLDEN FOOTHILL PARKWAY, SUITE 206 EL DORADO HILLS, CA95762 Chief Financial Officer Signatures /s/ Harminder Sehmi 07/06/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )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. ( 2 )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. ( 3 )On January 13, 2025, the date of the Issuer's business combination, the reporting person received earnout shares in respect of the Issuer's business combination. Each eanout share represents a contingent right to receive one share of the Issuer's common stock if the trading price of the Issuer's common stock exceeds certain thresholds for 20 of 30 consecutive trading days post-closing of the Issuer's business combination. Company employees entitled to receive earnout shares are required to provide service through the date the target is achieved and if an employee departs, the forfeited earnout shares are re-allocated among the pool of remaining eligible employees. Accordingly, the ultimate number of earnout shares is subject to adjustment from time to time in the event of forfeitures by employees of the Company, which add to the reporting person's earnout shares. ( 4 )Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. ( 5 )The restricted stock units vest 25% on December 1, 2027, and quarterly thereafter commencing on March 1, 2028. ( 6 )The stock option vests in 36 substantially equal monthly installments beginning on October 19, 2023. ( 7 )The stock option vests as to one third of the underlying shares on July 1, 2025 and thereafter in 24 equal monthly installments. ( 8 )The stock option vests in eight (8) substantially equal quarterly installments beginning on December 1, 2025. ( 9 )The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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