What SEC filings does Cerus Corporation submit to the SEC?

Cerus Corporation (CERS) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about CERS?

A Form 4 for CERS discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Cerus Corporation?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for CERS?

The 10-K is Cerus Corporation's annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all CERS SEC filings directly on EDGAR?

You can view all historical Cerus Corporation filings on the SEC EDGAR company page for CERS. Each filing card on this page links directly to the original SEC document.

How often does Cerus Corporation file with the SEC?

Cerus Corporation files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling CERS shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

CERS SEC Filing News — Cerus Corporation

Latest SEC filings for Cerus Corporation (CERS) 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: 2026-08-17.

Cerus Corporation operates as a biomedical products company. The company focuses on developing and commercializing the INTERCEPT Blood System to enhance blood safety. The company offers INTERCEPT Blood System, a proprietary technology for controlling biological replication that is designed to reduce blood-borne pathogens in donated blood components intended for transfusion. The company also offers INTERCEPT Blood Systems for platelets plasma, and cryoprecipitation, which is designed to inactivat…

Sector: Healthcare Industry: Medical Devices Market Cap: $443.4M CIK: 1020214

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for CERS currently lean bearish. Of the 20 filing records displayed, 8 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.

CERS Filing Activity Snapshot 2026-06-02 — 2026-08-17

Insider Transactions (Form 4)

0 buys vs 8 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$299.9K

Greenman William Mariner (Director, President and CEO) · 2026-07-02

101,919 shares · Form 4

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 12 · 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 12 filings in this group are Form 4s for Cerus Corporation.

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 12 insider filings shown, the breakdown is 8 open-market sale and 4 compensation award. 8 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×8: 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.
Compensation award ×4: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Form 4 Open-market sale Insider Selling 2026-08-17

CERS insider Jensen Chrystal (Chief Legal Officer) sold 30,000 shares (~$89.5K)

Jensen Chrystal, listed as Chief Legal Officer at CERUS CORP, reported an open-market sale of 30,000 CERS 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	30,000	$2.98	$89.5K

Filing: Form 4 (Insider Transaction) Insider: Jensen Chrystal (Chief Legal Officer) Shares: 30,000 Est. Value: $89.5K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-20

CERS insider Jayaraman Vivek K (Chief Executive Officer) sold 16,666 shares (~$52.7K)

Jayaraman Vivek K, listed as Chief Executive Officer at CERUS CORP, reported an open-market sale of 16,666 CERS 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	16,666	$3.16	$52.7K

Filing: Form 4 (Insider Transaction) Insider: Jayaraman Vivek K (Chief Executive Officer) Shares: 16,666 Est. Value: $52.7K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-02

CERS insider Green Kevin Dennis (Chief Financial Officer) sold 33,676 shares (~$99.1K)

Green Kevin Dennis, listed as Chief Financial Officer at CERUS CORP, reported an open-market sale of 33,676 CERS 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
`A`	Compensation award	63,600	—	—
`S`	Open-market sale	33,676	$2.94	$99.1K

Filing: Form 4 (Insider Transaction) Insider: Green Kevin Dennis (Chief Financial Officer) Shares: 33,676 Est. Value: $99.1K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-02

CERS insider Jayaraman Vivek K (Chief Operating Officer) sold 42,359 shares (~$124.7K)

Jayaraman Vivek K, listed as Chief Operating Officer at CERUS CORP, reported an open-market sale of 42,359 CERS 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
`A`	Compensation award	80,000	—	—
`S`	Open-market sale	42,359	$2.94	$124.7K
`A`	Compensation award	554,529	—	—
`A`	Compensation award derivative · Performance Rights	369,686	—	—

Filing: Form 4 (Insider Transaction) Insider: Jayaraman Vivek K (Chief Operating Officer) Shares: 42,359 Est. Value: $124.7K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-02

CERS insider Jensen Chrystal (Chief Legal Officer) sold 24,329 shares (~$71.6K)

Jensen Chrystal, listed as Chief Legal Officer at CERUS CORP, reported an open-market sale of 24,329 CERS 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
`A`	Compensation award	55,000	—	—
`S`	Open-market sale	24,329	$2.94	$71.6K

Filing: Form 4 (Insider Transaction) Insider: Jensen Chrystal (Chief Legal Officer) Shares: 24,329 Est. Value: $71.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-02

CERS insider Greenman William Mariner (Director, President and CEO) sold 101,919 shares (~$299.9K)

Greenman William Mariner, listed as Director, President and CEO at CERUS CORP, reported an open-market sale of 101,919 CERS 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
`A`	Compensation award	192,500	—	—
`S`	Open-market sale	101,919	$2.94	$299.9K

Filing: Form 4 (Insider Transaction) Insider: Greenman William Mariner (Director, President and CEO) Shares: 101,919 Est. Value: $299.9K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-06-11

CERS insider BJERKHOLT ERIC (Director) sold 20,454 shares (~$53.2K)

BJERKHOLT ERIC, listed as Director at CERUS CORP, reported an open-market sale of 20,454 CERS 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	20,454	$2.60	$53.2K

Filing: Form 4 (Insider Transaction) Insider: BJERKHOLT ERIC (Director) Shares: 20,454 Est. Value: $53.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-02

CERS insider Form 4 filed for equity award, exercise, or tax withholding

Lucena Ann (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	60,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Lucena Ann (Director) Shares: 60,000

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-02

CERS insider Form 4 filed for equity award, exercise, or tax withholding

BJERKHOLT ERIC (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	60,000	—	—

Filing: Form 4 (Insider Transaction) Insider: BJERKHOLT ERIC (Director) Shares: 60,000

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-02

CERS insider Form 4 filed for equity award, exercise, or tax withholding

NACHTSHEIM JAMI K (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	60,000	—	—

Filing: Form 4 (Insider Transaction) Insider: NACHTSHEIM JAMI K (Director) Shares: 60,000

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-06-02

CERS insider Jayaraman Vivek K (Chief Operating Officer) sold 16,667 shares (~$50.0K)

Jayaraman Vivek K, listed as Chief Operating Officer at CERUS CORP, reported an open-market sale of 16,667 CERS 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	16,667	$3.00	$50.0K

Filing: Form 4 (Insider Transaction) Insider: Jayaraman Vivek K (Chief Operating Officer) Shares: 16,667 Est. Value: $50.0K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-02

CERS insider Form 4 filed for equity award, exercise, or tax withholding

Witney Frank (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	60,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Witney Frank (Director) Shares: 60,000

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 3 · 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. Cerus Corporation has 3 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 2026-08-17

CERS Form 144 filed for proposed insider sale by CHRYSTAL NIKOLE JENSEN (30,000 shares) ~$89.5K

CHRYSTAL NIKOLE JENSEN filed a Form 144 with the SEC indicating intent to sell CERS (CERUS CORP) 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: CHRYSTAL NIKOLE JENSEN Shares: 30,000 Est. Value: $89.5K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-07-16

CERS Form 144 filed for proposed insider sale by VIVEK K JAYARAMAN (16,666 shares) ~$52.7K

VIVEK K JAYARAMAN filed a Form 144 with the SEC indicating intent to sell CERS (CERUS CORP) 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: VIVEK K JAYARAMAN Shares: 16,666 Est. Value: $52.7K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-06-09

CERS Form 144 filed for proposed insider sale by ERIC BJERKHOLT (20,454 shares) ~$53.2K

ERIC BJERKHOLT filed a Form 144 with the SEC indicating intent to sell CERS (CERUS CORP) 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: ERIC BJERKHOLT Shares: 20,454 Est. Value: $53.2K

View on SEC EDGAR → Open Filing Document →

Material Events 4 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 4 in this period for Cerus Corporation. 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 2026-07-30

CERS filed 8-K — material company event

CERUS CORP 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 2026-07-10

CERS filed 8-K — material company event

CERUS CORP 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 2026-06-08

CERS filed 8-K — material company event

CERUS CORP 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 2026-06-03

CERS filed 8-K — material company event

CERUS CORP 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 Cerus Corporation.

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 2026-07-30

CERS filed Quarterly Report (10-Q)

CERUS CORP 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 Cerus Corporation'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 CERS. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — CERS SEC Filings

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CERS Full Analysis

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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