Blaize Holdings, Inc.

The following reports information regarding the adoption of “Rule 10b5-1 trading arrangements” or “non-Rule 10b5-1 trading arrangements,” each as defined in Item 408(a) of Regulation S-K, during the three months ended December 31, 2025 for the Company’s directors and “officers,” as defined in Rule 16a-1(f) under the Exchange Act. There were no modifications or terminations of such trading arrangements during the three months ended December 31, 2025.

•On December 11, 2025, Mr. Anthony Cannestra, adirector of Blaize Holdings, Inc. (the “Company”), adopted a Rule 10b5-1 trading arrangement in accordance with guidelines specified by Rule 10b5-1 under the Securities Exchange Act of 1934, and the Company’s policies regarding transactions in its securities by insiders (a “Rule 10b5-1 Plan”). Mr. Cannestra’s Rule 10b5-1 Plan will commence on April 6, 2026. Such plan provides for the potential sale of up to (i)75,258 shares of the Company’s common stock issued to him upon the vesting of an equal number of previously granted restricted stock units and (ii) 200,000 shares of the Company’s common stock underlying vested stock options to be exercised and sold pursuant to the plan. The plan will terminate automatically on December 31, 2026, and any shares remaining unsold as of that date will not be sold pursuant to the plan.

•On December 12, 2025, Mr. Dinakar Munagala, the Chief Executive Officer of the Company, adopted a Rule 10b5-1 Plan. Mr. Munagala’s Rule 10b5-1 Plan will commence on April 6, 2026. Such plan provides for the potential sale of up to (i)125,000 shares of the Company’s common stock issued to him previously and (ii) 807,325 shares of the Company’s common stock underlying vested stock options to be exercised and sold pursuant to the plan. The plan will terminate automatically on March 15, 2027, and any shares remaining unsold as of that date will not be sold pursuant to the plan.

•On December 12, 2025, Mr. Harminder Sehmi, the Chief Financial Officer of the Company, adopted a Rule 10b5-1 Plan. Mr. Sehmi’s Rule 10b5-1 Plan will commence on April 19, 2026. Such plan provides for the potential sale of up to 505,060 shares of the Company’s common stock underlying vested stock options to be exercised and sold pursuant to the plan. The plan will terminate automatically on December 31, 2026, and any shares remaining unsold as of that date will not be sold pursuant to the plan.