SEC filingsOct 12, 2026 to Oct 19, 2026: insiders reported 840 purchases and sales across 212 companies.840 insider purchases and sales in 7 daysSee the filings →
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Company profile

QSI

Quantum-Si Incorporated
NASDAQHealth Care

Latest close: 1.12 USD · Oct 16, 2026 · 1 year · split-adjusted

On the price, the facts of the public record■Insider buy□Insider sell◆Adverse 8-K filing◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account

End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.

Latest on record

The most recent facts, as filed.

Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.

  1. Oct 15, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  2. Oct 8, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  3. Sep 29, 2026Material event · 8-KFiled by the company itself.Open the filing ↗

In numbers

What this profile holds, counted.

Closes · 1 year250
SEC filings on record44618 flagged findings
Reported transactions (Form 4)80since May 12, 2023 · and 4 other holdings
Corporate events (8-K)30since Jan 30, 2023

What the record says

Description, identity and filings, each with its source.

Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.

SEC topics

Regulatory history

Topics detected in its SEC reports, with the original excerpt.

Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.

  • 2026-05-15share offering or dilution eventrecentOpen filing ↗
    “…Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant…”
  • 2026-05-07share offering or dilution eventrecentOpen filing ↗
    “…stock, debt securities, warrants, rights and units. On September 26, 2025, the Company entered into a Sales Agreement (the “Sales…”
    +1 more passage from the same document
    • “…the offering of Class A common stock, preferred stock, debt securities, warrants, rights and units. On December 11, 2024, we…”
  • 2026-05-07share offering or dilution eventrecentOpen filing ↗
    “…Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant…”
  • 2026-03-03share offering or dilution eventrecentOpen filing ↗
    “…the offering of Class A common stock, preferred stock, debt securities, warrants, rights and units. On December 11, 2024, we…”
    +1 more passage from the same document
    • “…had authorized 1,000,000 shares of preferred stock at $ 0.0001 par value per share. There were no preferred shares outstanding for…”
  • 2026-03-03listing compliance noticerecentOpen filing ↗
    “…LLC, which could seriously harm the liquidity of our shares and our ability to raise capital or complete a strategic transaction.…”
    +1 more passage from the same document
    • “…listing rules. We would then be required to comply with those provisions of the Nasdaq listing requirements. We could fail to…”
  • 2026-03-03capital return (buybacks/dividends)recentOpen filing ↗
    “…any cash dividends on our Class A common stock or Class B common stock to date, and we do not anticipate paying any cash dividends…”
    +1 more passage from the same document
    • “…dividends on our Class A common stock or Class B common stock to date, and we do not anticipate paying any cash dividends in the…”

Original excerpts from SEC filings, untranslated. Not advice and not a prediction.

SEC record

SEC dossier

What this company has filed with the SEC, in plain language.

The 25 most recent filings (of 446)

Everything filed

Every SEC filing, newest first, with what it is. Below, each type with its own explanation.

  • Oct 15, 268-K ↗Current report · Other events new
  • Oct 8, 268-K ↗Current report · Communication to the market
  • Sep 29, 268-K ↗Current report · Communication to the market
  • Notice of proposed sale · 3 Form 144 filingsshow all 3hide
  • Insider transaction · 3 Form 4 filingsshow all 3hide
  • Aug 28, 26SCHEDULE 13D/A ↗Stake with intent to influence · ROTHBERG JONATHAN M. · 100.0% · event on Aug 26, 26 · amendment
  • Aug 13, 2610-Q ↗Quarterly report
  • Aug 13, 268-K ↗Current report · Results
  • Jul 29, 26SCHEDULE 13G/A ↗Passive stake · BlackRock, Inc. · 2.3% · event on Jun 30, 26 · amendment
  • Jul 24, 268-K ↗Current report · Listing notice (8-K 3.01)
  • Notice of proposed sale · 2 Form 144 filingsshow all 2hide
  • Jun 24, 268-K ↗Current report · Entered a material agreement
  • Notice of proposed sale · 2 Form 144 filingsshow all 2hide
  • Insider transaction · 4 Form 4 filingsshow all 4hide
  • Jun 10, 2625-NSE ↗Delisting or deregistration
  • May 20, 26Form 4 ↗Insider transaction

446 filings on record, the oldest from Aug 3, 20.

Listing the 25 most recent filings of the 446 on record.

8-Ks, explained

Stress7Structure24Governance24
  • Jul 24, 26StressListing notice (8-K 3.01)8-K 3.01 ↗
  • Structure6 material agreements entered2024 – 2026show all 6hide
    • Jun 24, 26StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
    • Sep 29, 25StructureEntered a material agreement+1 more in the same filing8-K 1.01 ↗
    • Sep 26, 25StructureEntered a material agreement+3 more in the same filing8-K 1.01 ↗
    • Jul 7, 25StructureEntered a material agreement+3 more in the same filing8-K 1.01 ↗
    • Jan 6, 25StructureEntered a material agreement+1 more in the same filing8-K 1.01 ↗
    • Dec 11, 24StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Nov 22, 24StressRestructuring plan with committed costs8-K 2.05 ↗
  • Nov 12, 24StressListing notice (8-K 3.01)8-K/A 3.01 ↗
  • Nov 8, 24StressListing notice (8-K 3.01)8-K 3.01 ↗
  • Aug 27, 24GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
  • Jun 7, 24GovernanceAuditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
  • Governance5 senior executive changes2023 – 2024show all 5hide
    • May 30, 24GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Mar 21, 24GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Mar 11, 24GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • Sep 21, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Sep 5, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
  • Aug 29, 23StressRestructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗
  • Governance5 senior executive changes2023show all 5hide
    • Jul 20, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Jun 21, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Jun 7, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • May 22, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • May 2, 23GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
  • Jan 30, 23StressRestructuring plan with committed costs8-K 2.05 ↗

The record reaches back to Sep 9, 20.

Notable in the record

Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.

  • May 10, 21StressPast accounts declared unreliable and being restated8-K 4.02 ↗

The full record holds 7 stress filings.

Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.

Ownership and control

Schedule 13D: stake and stated purpose

Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.

  • ROTHBERG JONATHAN M.100.0%Aug 26, 26SCHEDULE 13D/A ↗5 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings

Schedule 13G: short-form filing

The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.

  • Nikko Asset Management Americas, Inc.4.8%Dec 31, 24SCHEDULE 13G/A ↗
  • Sumitomo Mitsui Trust Group, Inc.4.8%Dec 31, 24SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
  • The Vanguard Group4.8%Sep 30, 25SCHEDULE 13G/A ↗1 earlier filing
  • ARK Investment Management LLC4.8%May 31, 25SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum. · 3 earlier filings
  • BlackRock, Inc.2.3%Jun 30, 26SCHEDULE 13G/A ↗

Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.

Sale intention announced

On Sep 23, LaPointe Christian filed notice of intent to sell up to $11K.

A notice is not a sale: it may not go ahead, may happen in part, or at a different price.

No sale of theirs is on record yet in Form 4; the 90-day window is still open.

View notice (Form 144) ↗+6 more recent notices · 3 with a later sale

SEC record

Insider transactions

Buys and sells reported by officers, directors and major shareholders on SEC Form 4.

Buys and sells

  • Sep 22, 26Sell$4KChristian LaPointeGC & Corp. Secretary↗
  • Sep 22, 26Sell$2KJeffry R. KeyesChief Financial Officer↗
  • Sep 22, 26Sell$7KJeffrey Alan HawkinsPresident & CEO↗
  • Sep 21, 26Sell$7KChristian LaPointeGC & Corp. Secretary↗
  • Sep 21, 26Sell$4KJeffry R. KeyesChief Financial Officer↗
  • Sep 21, 26Sell$15KJeffrey Alan HawkinsPresident & CEO↗
  • Jun 23, 26Sell$10KJeffrey Alan HawkinsPresident & CEO↗
  • Jun 23, 26Sell$14KJohn S. VieceliChief Product Officer↗
  • Jun 23, 26Sell$4KJeffry R. KeyesChief Financial Officer↗
  • Jun 23, 26Sell$7KChristian LaPointeGC & Corp. Secretary↗
  • Jun 22, 26Sell$11KJeffrey Alan HawkinsPresident & CEO↗
  • Jun 22, 26Sell$14KJohn S. VieceliChief Product Officer↗

There are 24 more transactions in this stretch.

Stock compensation, tax and giftsshow the 4 other transactionshide

Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.

  • Mar 12, 26Compensationamount n/aChristian LaPointeGC & Corp. Secretary↗
  • Mar 12, 26Compensationamount n/aJeffrey Alan HawkinsPresident & CEO↗
  • Mar 12, 26Compensationamount n/aJohn S. VieceliChief Product Officer↗
  • Mar 12, 26Compensationamount n/aJeffry R. KeyesChief Financial Officer↗

The full record holds 91 transactions and goes back to Jan 15, 23.

Its sector and its market

Quantum-Si Incorporated among Health Care companies

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Coverage

What sits behind this page.

Where each figure comes from and how far it reaches.

Prices
End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
Series quality
250 clean closes in the period.
SEC records
446 documents on file, from Aug 3, 2020 to Oct 15, 2026.
Company description
No description available.
This page
Generated on Oct 19, 2026; refreshed through the day.

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Are the prices real time?

No. It is one close per session, from the provider and with the date shown on the profile; it does not update during the trading day.

Which SEC documents appear here?

Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.

Why does a European company show no SEC records?

It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.

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