Quantum-Si (QSI) Proxy filing summary

Executive summary

• The annual meeting will be held virtually on May 15, 2026, with voting and Q&A available online.

• Stockholders will vote on electing ten directors, ratifying the auditor, and approving executive compensation.

• Voting rights are based on share class, with Class B shares carrying 20 votes per share.

• Proxy materials are primarily distributed electronically to conserve resources and reduce costs.

Voting matters and shareholder proposals

• Proposals include electing ten directors, ratifying PricewaterhouseCoopers LLP as auditor, and a non-binding say-on-pay vote.

• Board recommends voting in favor of all proposals.

• Majority vote is required for each proposal; abstentions and broker non-votes have no effect.

• Stockholders can submit proposals for the 2027 meeting by December 2, 2026.

Board of directors and corporate governance

• Board consists of ten members, eight of whom are independent under Nasdaq rules.

• Board committees include audit, compensation, and nominating/governance, all with independent directors.

• The company qualifies as a "controlled company" due to majority voting power held by Dr. Rothberg but maintains a majority independent board.

• Corporate governance guidelines and an insider trading policy are in place.