QSI at a glance
Quantum-Si Inc (QSI, SEC CIK 1816431) filed its latest 10-K annual report on March 3, 2026, a 10-Q quarterly report on August 13, 2026, an 8-K current report on September 29, 2026 and Form 4 insider filings as recently as September 23, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended December 31, 2025 (FY2025), Quantum-Si Inc (QSI) reported revenue of $2.4 million (down 20.3% from FY2024) and a net loss of $101.3 million. Diluted EPS was -$0.51.
- As of June 30, 2026, 19 institutional investment managers tracked by SignalX reported holding Quantum-Si Inc (QSI) shares worth $26.0 million in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by Hawkins Jeffrey Alan on September 22, 2026 of 9,709 shares at $0.76 per share.
- In the last 90 days, QSI insiders reported 0 open-market purchases ($0) and 6 open-market sales ($39K) on Form 4, a net sale of $39K.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2025
- $2.4M
- −20.3% vs prior year
- Insiders · 90 days
- 0 buys · 6 sells
- Net −$39K
- 13F holders
- 19 funds
- $26.0M · −2 vs prior quarter
- Latest 8-K
- Sep 29, 2026
- Item 7.01
AI 10-Q Quarterly Report Analysis
Latest 10-Q, quarter ended Jun 30, 2026
Management Discussion & Analysis
- Revenue $344K, down 41.8% YoY from $591K, driven by lower instrument and consumables sales
- Gross margin 50.0% vs 59.4% YoY, with gross profit $172K vs $351K
- Product revenue $314K, down 43.7% YoY; service revenue $30K, down 9.1%
- Operating cash use $44.1M in six months vs $46.4M YoY; cash and investments $169.9M
- Proteus launch anticipated Q2 2027; customer purchase delays expected to pressure 2026 revenue
Risk Factors
- New Nasdaq listing risk triggered by July 23 notice after 30 consecutive business days below $1.00 bid price
- Delisting exposure, with compliance deadline January 19, 2027 and possible 180-day extension
- Proteus launch delay, moved from end-2026 to second quarter 2027, threatening market credibility and valuation
- Product-development risk from hardware integration, supplier challenges, and unresolved customer applications
- Restructuring execution risk, eliminating approximately 20% of 152 employees during Proteus realignment
AI summary of the QSI 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item 7.01: Regulation FD Disclosure
- Standard forward-looking statement disclaimer covering risks, uncertainties and assumptions
- Investors should rely on QSI’s SEC filings for detailed risk factors, including its latest 10-K and subsequent 10-Q filings
Item 2.02: Results of Operations and Financial Condition
- QSI announced results for the three and six months ended June 30, 2026
- Business update provided through furnished Exhibit 99.1
Item EX-99.1: Item EX-99.1
- Q2 revenue fell to $344 thousand from $591 thousand, reflecting weaker Platinum demand during the Proteus transition
- Proteus launch moved to Q2 2027, adding design work but targeting stronger manufacturing readiness and customer experience
Item 3.01: Notice of Delisting or Failure to Satisfy a Continued Listing Rule
- Nasdaq deficiency: closing bid below $1.00 for 30 consecutive business days
- Trading continues on Nasdaq Global Market under QSI with no immediate delisting impact
AI summaries of QSI 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for QSI
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Hawkins Jeffrey Alan | Sell | Sep 22, 2026 | 9,709 | $0.76 |
| Keyes Jeffry R. | Sell | Sep 22, 2026 | 2,493 | $0.76 |
| LaPointe Christian | Sell | Sep 22, 2026 | 4,721 | $0.76 |
| Hawkins Jeffrey Alan | Sell | Sep 21, 2026 | 20,143 | $0.76 |
| Keyes Jeffry R. | Sell | Sep 21, 2026 | 5,172 | $0.76 |
| LaPointe Christian | Sell | Sep 21, 2026 | 9,795 | $0.76 |
| Hawkins Jeffrey Alan | Sell | Jun 23, 2026 | 11,311 | $0.90 |
| Keyes Jeffry R. | Sell | Jun 23, 2026 | 4,117 | $0.90 |
Financial SummaryXBRL
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Profitability | |||
| Revenue | $1.1M | $3.1M | $2.4M |
| Gross Profit | - | $1.6M | $1.2M |
| Operating Income | - | -$108.6M | -$116.1M |
| Net Income | - | -$101.0M | -$101.3M |
| Gross Margin | - | 52.3% | 47.3% |
| Op. Margin | - | -3550.6% | -4766.0% |
| Net Margin | - | -3303.0% | -4160.1% |
| Balance Sheet | |||
| Total Assets | - | $247.9M | $245.6M |
| Equity | - | $215.4M | $220.2M |
| ROE | - | -46.9% | -46.0% |
| Per Share | |||
| EPS | - | $-0.71 | $-0.51 |
| Cash Flow | |||
| Operating CF | - | -$87.8M | -$94.7M |
| CapEx | $4.5M | $4.6M | $2.5M |
Source: XBRL data in Quantum-Si Inc (QSI)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate QSI share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 19 | $26.0M |
| Q1 2026 | 21 | $29.6M |
| Q4 2025 | 20 | $47.3M |
| Q3 2025 | 22 | $55.6M |
| Q2 2025 | 24 | $80.8M |
| Q1 2025 | 19 | $32.7M |
| Q4 2024 | 13 | $53.8M |
| Q3 2024 | 12 | $13.9M |
- Vanguard Capital Management LLC+556.3K (+8%)
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- ARK Investment Management+288.8K (+4%)
- Morgan Stanley+193.5K (+149%)
- FMR LLC (Fidelity)+91.8K (+287%)
- BlackRock−8.19M (-61%)
- State Street Corp−2.88M (-76%)
- Vanguard Portfolio Management LLC−1.02M (-67%)
- Northern Trust−810.2K (-64%)
- BNY Mellon−364.3K (-95%)
- Millennium Management+3.13M
- Raymond James Financial+13.0K
- T. Rowe Price Group−96.5K
- Wells Fargo & Co−63.9K
- Two Sigma Investments−52.9K
- Prudential Financial−21.6K
Source: 13F-HR filings on SEC EDGAR (aggregated from 150 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
QSI filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
10-Q quarterly reports
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 8-K | Sep 29, 2026 | - | Analysis | - |
| 4 | Sep 23, 2026 | - | - | - |
| 4 | Sep 23, 2026 | - | - | - |
| 4 | Sep 23, 2026 | - | - | - |
| 8-K | Aug 13, 2026 | - | Analysis | - |
| 10-Q | Aug 13, 2026 | Jun 30, 2026 | Analysis | |
| 8-K | Jul 24, 2026 | - | Analysis | - |
| 8-K | Jun 24, 2026 | - | Analysis | - |
| 4 | Jun 24, 2026 | - | - | - |
| 4 | Jun 24, 2026 | - | - | - |
| 4 | Jun 24, 2026 | - | - | - |
| 4 | Jun 24, 2026 | - | - | - |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 8-K | May 15, 2026 | - | Analysis | |
| 8-K | May 7, 2026 | - | Analysis | |
| 10-Q | May 7, 2026 | Mar 31, 2026 | Analysis | |
| 4 | Apr 22, 2026 | - | - | - |
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QSI SEC filings: frequently asked questions
Are QSI insiders buying or selling?
In the last 90 days, Quantum-Si Inc (QSI) officers, directors and 10% owners reported no open-market purchases and 6 open-market sales worth $39,411 by 3 insiders on Form 4. Many insider sales are pre-planned or for taxes, so purchases usually carry more information.
Which institutions hold QSI stock?
As of June 30, 2026, the largest Quantum-Si Inc (QSI) holders among the 13F filers tracked by SignalX were Vanguard Capital Management LLC ($6.7 million), ARK Investment Management ($6.3 million), BlackRock ($4.6 million), Millennium Management ($2.8 million), AQR Capital Management ($2.1 million). 13F-HR reports are filed up to 45 days after each quarter ends.
What was QSI's revenue in fiscal year 2025?
For the fiscal year ended December 31, 2025 (FY2025), Quantum-Si Inc (QSI) reported revenue of $2.4 million (down 20.3% from FY2024) and a net loss of $101.3 million. Diluted EPS was -$0.51. The figures come from the XBRL data in the 10-K.
What did QSI report in its latest 8-K?
Quantum-Si Inc (QSI) filed an 8-K on September 29, 2026 reporting Item 7.01 (Regulation FD Disclosure). Standard forward-looking statement disclaimer covering risks, uncertainties and assumptions.
What are the latest QSI SEC filings?
Quantum-Si Inc (QSI) filed its latest 10-K annual report on March 3, 2026, a 10-Q quarterly report on August 13, 2026, an 8-K current report on September 29, 2026 and a Form 4 insider filing on September 23, 2026.
What is QSI's SEC CIK number?
Quantum-Si Inc (QSI)'s SEC Central Index Key (CIK) is 1816431. EDGAR lists every QSI filing under that number.
Ask anything about QSI
The research agent reads QSI's filings, financials, insider trades and 13F holders, then answers with sources.