Quantum-Si Inc

Since our inception, we have funded our operations primarily with proceeds from the issuance of equity to private investors, as well as with the proceeds received from the closing of the Business Combination. Additionally, we began to generate revenue during 2023 from commercial sales of our Platinum instrument. Our primary uses of liquidity have been operating expenses, capital expenditures and our acquisition of certain assets. Cash flows from operations have been historically negative as we continue to invest in the development of our technology in single-molecule protein sequencing. Going forward, we anticipate debt or equity offerings will be the primary source of funds to support our operating needs and capital expenditures until we reach scale of our commercial operations. We expect to incur negative operating cash flows on an annual basis for the foreseeable future until such time that we can scale our revenue growth.

We expect our existing cash and cash equivalents and investments in marketable securities, together with revenue from the sale of our products and services, will be sufficient to meet our liquidity, capital expenditure, and anticipated working capital requirements and fund our operations for at least the next 12 months. We expect to use our cash and cash equivalents and investments in marketable securities and funds from revenue generated to invest in our continued commercialization efforts, to further invest in research and development, for other operating expenses, business acquisitions and for working capital and general corporate purposes.

As of June 30, 2026, we had cash and cash equivalents and investments in marketable securities of$169.9 million. Our future capital requirements may vary from those currently planned and will depend on various factors including the pace and success of product commercialization.

Our ongoing commercialization efforts and continued research and development activities in advance of the anticipated launch of Proteus may require increased levels of spending. These efforts and activities may include investments to expand sales and marketing capabilities, advance product development, and build inventory to support commercialization. Other factors that could accelerate cash requirements include: (i) delays in achieving scientific and technical milestones, (ii) unforeseen capital expenditures and manufacturing costs related to commercialization, (iii) changes to our business or commercialization strategy, including those related to the timing and scope of the Proteus launch, (iv) costs associated with operating as a public company, (v) other items affecting our forecasted expenditures and use of cash resources, including potential acquisitions and (vi) increased product and service costs.

On August 11, 2023, we filed a universal shelf registration statement on Form S-3 (the “2023 Shelf Registration Statement”) covering the offering of Class A common stock, preferred stock, debt securities, warrants, rights and units. After the closing of the July 2025 Registered Direct Offering, the remaining capacity of the 2023 Shelf Registration Statement was approximately $13.8 million. We filed a universal shelf registration statement on Form S-3 and a subsequent amendment to the Form S-3 (the “2025 Shelf Registration Statement”), on September 26, 2025 and October 9, 2025, respectively, covering the offering of Class A common stock, preferred stock, debt securities, warrants, rights and units.

On December 11, 2024, we entered into an Equity Distribution Agreement (the “Canaccord Sales Agreement”) with Canaccord to sell shares of our Class A common stock having an aggregate offering price of up to $75.0 million, from time to time through an “at-the-market” offering program under which Canaccord acted as sales agent (the “2024 ATM Offering”). We had no obligation to sell any shares under the Canaccord Sales Agreement and could at any time suspend solicitation and offers under the Canaccord Sales Agreement. The 2024 ATM Offering was made pursuant to the 2023 Shelf Registration Statement and a prospectus supplement related to the 2024 ATM Offering dated December 11, 2024. During the year ended December 31, 2024, we sold and issued 23,425,650 shares of our Class A common stock under the 2024 ATM Offering, resulting in gross proceeds of $36.2 million. Net proceeds were $34.8 million after commissions and issuance costs of $1.4 million. We sold no shares of our Class A common stock under the 2024 ATM Offering during theyear ended December 31, 2025. In connection with the July 2025 Registered Direct Offering, we provided written notice, effective as of July 3, 2025, to Canaccord of our election to terminate the Canaccord Sales Agreement for our at-the-market offering. At the time of termination, we had sold 23,425,650 shares of our Class A common stock under the Canaccord Sales Agreement for aggregate gross proceeds of $36.2 million.

On January 3, 2025, we entered into a securities purchase agreement with certain institutional investors in connection with the January 2025 Registered Direct Offering. The gross proceeds from the January 2025 Registered Direct Offering were $50.0 million. After deducting estimated placement agents’ fees and other offering expenses payable by us, net proceeds recorded as of December 31, 2025 were approximately $46.8 million.

On July 3, 2025, we entered into a securities purchase agreement with a certain institutional investor in connection with the July 2025 Registered Direct Offering. The Pre-Funded Warrants were exercised in full on August 1, 2025 at the exercise price of $0.0001 for one share of Class A common stock per Pre-Funded Warrant. The gross proceeds from the July 2025 Registered Direct Offering were $50.0 million. After deducting estimated placement agents’ fees and other offering expenses payable by us, net proceeds as of December 31, 2025 were approximately $46.7 million.

On September 26, 2025, we entered into the Leerink Sales Agreement. We have no obligation to sell any shares under the Leerink Sales Agreement and may at any time suspend solicitation and offers under the Leerink Sales Agreement. The 2025 ATM Offering is being made pursuant to the 2025 Shelf Registration Statement and a prospectus supplement related to the 2025 ATM Offering. During the three and six months ended June 30, 2026 and the year ended December 31, 2025, there were no shares sold under the Leerink Sales Agreement. Shares offered and sold in the 2025 ATM Offering, if any, will be sold pursuant to the 2025 Shelf Registration Statement.

In the future, we may be unable to obtain any required additional financing on terms favorable to us, if at all. If adequate funds are not available to us on acceptable terms or otherwise, we may be unable to successfully develop or enhance products and services, respond to competitive pressure or take advantage of acquisition opportunities, any of which could have a material adverse effect on our business, financial condition, operating results and cash flows.

Capital Expenditures

We forecast capital expenditures in order to execute on our business plan and maintain growth; however, the actual amount and timing of such capital expenditures will ultimately be determined by the volume of business. We currently anticipate our capital expenditures for the year ended December 31, 2026 will be approximately $4.0 million. We have funded and plan to continue funding these capital expenditures with cash and financing.

Contractual Obligations and Off-Balance Sheet Arrangements

We lease certain facilities and equipment under non-cancellable lease agreements that expire at various dates through 2029. As of June 30, 2026, future minimum lease payments were approximately$3.5 million.

On June 18, 2026, we entered into a facility lease agreement (the “Lease Agreement”) for the lease of office, laboratory and manufacturing space located in San Diego, California. This new space is expected to replace the existing San Diego facility.

The Lease Agreement provides for an initial non-cancellable lease term of 120 months. Aggregate minimum cash lease payments under the lease are estimated to be approximately $38.3 million and are not included in future minimum lease payments as the lease had not commenced as of June 30, 2026.

The Lease Agreement also provides for a tenant improvement allowance of up to approximately $17.1 million. As of June 30, 2026, we had not used any portion of this allowance.

We expect the lease to commence on or about September 1, 2027, subject to the completion of tenant improvements and other customary conditions, but no later than November 1, 2027. Upon lease commencement, we will recognize a right-of-use asset and corresponding lease liability in accordance with ASC 842.

Aside from the new Lease Agreement, there have been no material changes in our contractual obligations, including those related to our other lease agreements, since December 31, 2025.

Licenses related to certain intellectual property

We license certain intellectual property, some of which may be utilized in our current or future product offerings. Topreserve the right to use such intellectual property, we are required to make annual minimum fixed payments totaling approximately $0.1 million as well as royalties based on net sales if the royalties exceed annual minimum fixed payments.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our unaudited Condensed Consolidated Financial Statements, which have been prepared in accordance with U.S. GAAP. The preparation of these unaudited Condensed Consolidated Financial Statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the unaudited Condensed Consolidated Financial Statements, as well as expenses incurred during the reporting periods. Our estimates are based on historical experience and various other factors we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about items not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Please refer to our critical accounting policies as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2025 and Note 2. Summary of Significant Accounting Policies in the accompanying notes to the unaudited Condensed Consolidated Financial Statements included elsewhere in this Quarterly Report on Form 10-Q for a complete description of our significant accounting policies.

Recently Issued Accounting Pronouncements

Please refer to Note 2. Summary of Significant Accounting Policies in the accompanying notes to the unaudited Condensed Consolidated Financial Statements included elsewhere in this Quarterly Report on Form 10-Q for a description of recently issued accounting pronouncements that impacted or may potentially impact our financial position and results of operations.