QSI SEC Filing News — Quantum-Si incorporated

Latest SEC filings for Quantum-Si incorporated (QSI) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-15.

Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS). The company offers Platinum and Platinum Pro NGPS instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer's protein sample for sequencing; and sequencing kits, which contain the reagents and consumables used to perform NGPS. It …
Sector: Healthcare Industry: Medical Devices Market Cap: $238.6M
20
Total Filings
0
Bullish Classifications
7
Bearish Classifications
7
Insider Transactions
5
Material Events (8-K)
1
Periodic Reports
Rule-based classifications for QSI currently lean bearish. Of the 20 filing records displayed, 7 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
QSI Filing Activity Snapshot 2026-06-24 — 2026-10-15
Insider Transactions (Form 4)
0 buys vs 7 sells
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$28.1K
Vieceli John S. · 2026-06-24
30,223 shares · Form 144
Form 144 Notices
7
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 7 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 7 filings in this group are Form 4s for Quantum-Si incorporated.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 7 insider filings shown, the breakdown is 7 open-market sale. 7 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×7
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Form 4 Open-market sale Insider Selling 2026-09-23

QSI insider Hawkins Jeffrey Alan (Director, President & CEO) sold 29,852 shares (~$22.6K)

Hawkins Jeffrey Alan, listed as Director, President & CEO at Quantum-Si Inc, reported an open-market sale of 29,852 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 20,143 $0.76 $15.2K
S Open-market sale 9,709 $0.76 $7.4K
Filing: Form 4 (Insider Transaction) Insider: Hawkins Jeffrey Alan (Director, President & CEO) Shares: 29,852 Est. Value: $22.6K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-23

QSI insider Keyes Jeffry R. (Chief Financial Officer) sold 7,665 shares (~$5.8K)

Keyes Jeffry R., listed as Chief Financial Officer at Quantum-Si Inc, reported an open-market sale of 7,665 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 5,172 $0.76 $3.9K
S Open-market sale 2,493 $0.76 $1.9K
Filing: Form 4 (Insider Transaction) Insider: Keyes Jeffry R. (Chief Financial Officer) Shares: 7,665 Est. Value: $5.8K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-23

QSI insider LaPointe Christian (GC & Corp. Secretary) sold 14,516 shares (~$11.0K)

LaPointe Christian, listed as GC & Corp. Secretary at Quantum-Si Inc, reported an open-market sale of 14,516 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 9,795 $0.76 $7.4K
S Open-market sale 4,721 $0.76 $3.6K
Filing: Form 4 (Insider Transaction) Insider: LaPointe Christian (GC & Corp. Secretary) Shares: 14,516 Est. Value: $11.0K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-24

QSI insider LaPointe Christian (GC & Corp. Secretary) sold 15,588 shares (~$14.5K)

LaPointe Christian, listed as GC & Corp. Secretary at Quantum-Si Inc, reported an open-market sale of 15,588 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 7,794 $0.96 $7.5K
S Open-market sale 7,794 $0.90 $7.0K
Filing: Form 4 (Insider Transaction) Insider: LaPointe Christian (GC & Corp. Secretary) Shares: 15,588 Est. Value: $14.5K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-24

QSI insider Keyes Jeffry R. (Chief Financial Officer) sold 8,233 shares (~$7.6K)

Keyes Jeffry R., listed as Chief Financial Officer at Quantum-Si Inc, reported an open-market sale of 8,233 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 4,116 $0.96 $3.9K
S Open-market sale 4,117 $0.90 $3.7K
Filing: Form 4 (Insider Transaction) Insider: Keyes Jeffry R. (Chief Financial Officer) Shares: 8,233 Est. Value: $7.6K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-24

QSI insider Vieceli John S. (Chief Product Officer) sold 30,223 shares (~$28.1K)

Vieceli John S., listed as Chief Product Officer at Quantum-Si Inc, reported an open-market sale of 30,223 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 15,111 $0.96 $14.5K
S Open-market sale 15,112 $0.90 $13.6K
Filing: Form 4 (Insider Transaction) Insider: Vieceli John S. (Chief Product Officer) Shares: 30,223 Est. Value: $28.1K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-24

QSI insider Hawkins Jeffrey Alan (Director, President & CEO) sold 22,621 shares (~$21.0K)

Hawkins Jeffrey Alan, listed as Director, President & CEO at Quantum-Si Inc, reported an open-market sale of 22,621 QSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 11,310 $0.96 $10.8K
S Open-market sale 11,311 $0.90 $10.2K
Filing: Form 4 (Insider Transaction) Insider: Hawkins Jeffrey Alan (Director, President & CEO) Shares: 22,621 Est. Value: $21.0K
View on SEC EDGAR → Open Filing Document →
Proposed Insider Sales 7 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Quantum-Si incorporated has 7 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-09-23

QSI Form 144 filed for proposed insider sale by Hawkins Jeffrey Alan (29,852 shares) ~$22.6K

Hawkins Jeffrey Alan filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Hawkins Jeffrey Alan Shares: 29,852 Est. Value: $22.6K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-09-23

QSI Form 144 filed for proposed insider sale by LaPointe Christian (14,516 shares) ~$11.0K

LaPointe Christian filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: LaPointe Christian Shares: 14,516 Est. Value: $11.0K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-09-23

QSI Form 144 filed for proposed insider sale by Keyes Jeffry R. (7,665 shares) ~$5.8K

Keyes Jeffry R. filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Keyes Jeffry R. Shares: 7,665 Est. Value: $5.8K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-24

QSI Form 144 filed for proposed insider sale by LaPointe Christian (15,588 shares) ~$14.5K

LaPointe Christian filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: LaPointe Christian Shares: 15,588 Est. Value: $14.5K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-24

QSI Form 144 filed for proposed insider sale by Keyes Jeffry R. (8,233 shares) ~$7.6K

Keyes Jeffry R. filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Keyes Jeffry R. Shares: 8,233 Est. Value: $7.6K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-24

QSI Form 144 filed for proposed insider sale by Vieceli John S. (30,223 shares) ~$28.1K

Vieceli John S. filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Vieceli John S. Shares: 30,223 Est. Value: $28.1K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-24

QSI Form 144 filed for proposed insider sale by Hawkins Jeffrey Alan (22,621 shares) ~$21.0K

Hawkins Jeffrey Alan filed a Form 144 with the SEC indicating intent to sell QSI (Quantum-Si Inc) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Hawkins Jeffrey Alan Shares: 22,621 Est. Value: $21.0K
View on SEC EDGAR → Open Filing Document →
Material Events 5 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 5 in this period for Quantum-Si incorporated. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-10-15

QSI filed 8-K — material company event

Quantum-Si Inc filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-10-08

QSI filed 8-K — material company event

Quantum-Si Inc filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-09-29

QSI filed 8-K — material company event

Quantum-Si Inc filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-08-13

QSI filed 8-K — material company event

Quantum-Si Inc filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-07-24

QSI filed 8-K — material company event

Quantum-Si Inc filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Quantum-Si incorporated.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-13

QSI filed Quarterly Report (10-Q)

Quantum-Si Inc filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →

How we classify Quantum-Si incorporated's filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on QSI. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — QSI SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
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