Q - Quantum-Si

10b5-1 Trading Arrangements

During the quarter ended June 30, 2025, no officers or directors, as defined in Rule 16a-1(f), adopted, modified orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Item 408 of Regulation S-K.

Delaware Stockholder Litigation

On July 22, 2025, the Company and the other parties of a putative class action lawsuit that was filed on May 16, 2024 in the Delaware Court of Chancery, styled Farzad HighCape Capital, et al. (the “Delaware Stockholder Litigation”), through a mediation process, reached a preliminary settlement. As a result, as of June 30, 2025, the Company recorded a gross Accrued legal settlement liability of $8.0 million and a $4.6 million Legal settlement insurance receivable in the Condensed Consolidated Balance Sheets and associated legal settlement fees of $3.4 million in Legal settlement, net of insurance, in the Condensed Consolidated Statements of Operations and Comprehensive Loss. Of the $8.0 million accrued liability, $7.6 million represents the preliminary settlement amount and $0.4 million is an estimate of legal and related expenses to finalize the legal settlement. The preliminary legal settlement is subject to execution of definitive documentation and a number of court procedural processes, including notice to and approval of the class members, and final court approval. For further information on the Delaware Stockholder Litigation, please refer to Note 17. Commitments and Contingencies, in the notes to the Condensed Consolidated Financial Statements.