What SEC filings does Cabot Corporation submit to the SEC?

Cabot Corporation (CBT) 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 CBT?

A Form 4 for CBT 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 Cabot 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 CBT?

The 10-K is Cabot 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 CBT SEC filings directly on EDGAR?

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

How often does Cabot Corporation file with the SEC?

Cabot 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 CBT shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

CBT SEC Filing News — Cabot Corporation

Latest SEC filings for Cabot Corporation (CBT) 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: 2026-10-01.

Cabot Corporation operates as a specialty chemicals and performance materials company. It operates through two segments, Reinforcement Materials and Performance Chemicals. The company offers reinforcing carbons that are used in tires as a rubber reinforcing agent and performance additive, as well as in industrial products, such as hoses, belts, extruded profiles, and molded goods; and engineered elastomer composites solutions. It also provides specialty carbons for use in inks, coatings, plastic…

Sector: Basic Materials Industry: Specialty Chemicals Market Cap: $3.8B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for CBT currently lean bearish. Of the 20 filing records displayed, 4 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.

CBT Filing Activity Snapshot 2026-08-11 — 2026-10-01

Insider Transactions (Form 4)

0 buys vs 3 sells

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

Largest Form 144 Filing

$11.47M

Keohane Sean D (Director, President and CEO) · 2026-08-31

134,895 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 15 · 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 15 filings in this group are Form 4s for Cabot 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 15 insider filings shown, the breakdown is 12 compensation award and 3 open-market sale. 3 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×12: 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.
Open-market sale ×3: 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 Compensation award Tax / Compensation Filing 2026-10-01

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

Masterson William F III (Senior Vice President) 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 derivative · Phantom Stock Units	24	$76.91	$1.8K

Filing: Form 4 (Insider Transaction) Insider: Masterson William F III (Senior Vice President)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-01

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

McLaughlin Erica (Executive Vice President, CFO) 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 derivative · Phantom Stock Units	93	$76.91	$7.2K

Filing: Form 4 (Insider Transaction) Insider: McLaughlin Erica (Executive Vice President, CFO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-01

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

Kalita Karen A (SVP and General Counsel) 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 derivative · Phantom Stock Units	44	$76.91	$3.4K

Filing: Form 4 (Insider Transaction) Insider: Kalita Karen A (SVP and General Counsel)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-01

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

Keohane Sean D (Director, President and CEO) 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 derivative · Phantom Stock Units	346	$76.91	$26.6K

Filing: Form 4 (Insider Transaction) Insider: Keohane Sean D (Director, President and CEO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-01

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

Nathoo Raffiq (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 derivative · Phantom Stock Units	360	$76.91	$27.7K

Filing: Form 4 (Insider Transaction) Insider: Nathoo Raffiq (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

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 derivative · Phantom Stock Units	61	$79.68	$4.9K

Filing: Form 4 (Insider Transaction) Insider: McLaughlin Erica (Executive Vice President, CFO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

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 derivative · Phantom Stock Units	3	$79.68	$239.04

Filing: Form 4 (Insider Transaction) Insider: Masterson William F III (Senior Vice President)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

Nathoo Raffiq (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 derivative · Phantom Stock Units	11	$79.68	$876.48

Filing: Form 4 (Insider Transaction) Insider: Nathoo Raffiq (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

Dumont Lisa M (VP, Controller & CAO) 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 derivative · Phantom Stock Units	4	$79.68	$318.72

Filing: Form 4 (Insider Transaction) Insider: Dumont Lisa M (VP, Controller & CAO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

DELGROSSO DOUGLAS G (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 derivative · Phantom Stock Units	30	$79.68	$2.4K

Filing: Form 4 (Insider Transaction) Insider: DELGROSSO DOUGLAS G (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

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 derivative · Phantom Stock Units	283	$79.68	$22.5K

Filing: Form 4 (Insider Transaction) Insider: Keohane Sean D (Director, President and CEO)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-14

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

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 derivative · Phantom Stock Units	31	$79.68	$2.5K

Filing: Form 4 (Insider Transaction) Insider: Kalita Karen A (SVP and General Counsel)

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-31

CBT insider Keohane Sean D (Director, President and CEO) sold 134,895 shares (~$11.47M)

Keohane Sean D, listed as Director, President and CEO at CABOT CORP, reported an open-market sale of 134,895 CBT 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
`M`	Option exercise	134,895	$50.00	$6.74M
`S`	Open-market sale	134,895	$85.00	$11.47M
`M`	Option exercise derivative · Employee Stock Option (Right to Buy)	134,895	—	—

Filing: Form 4 (Insider Transaction) Insider: Keohane Sean D (Director, President and CEO) Shares: 134,895 Est. Value: $11.47M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-26

CBT insider Keohane Sean D (Director, President and CEO) sold 2,779 shares (~$237.6K)

Keohane Sean D, listed as Director, President and CEO at CABOT CORP, reported an open-market sale of 2,779 CBT 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
`M`	Option exercise	2,779	$50.00	$138.9K
`S`	Open-market sale	2,779	$85.50	$237.6K
`M`	Option exercise derivative · Employee Stock Option (Right to Buy)	2,779	—	—

Filing: Form 4 (Insider Transaction) Insider: Keohane Sean D (Director, President and CEO) Shares: 2,779 Est. Value: $237.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-11

CBT insider Keohane Sean D (Director, President and CEO) sold 91,923 shares (~$7.94M)

Keohane Sean D, listed as Director, President and CEO at CABOT CORP, reported an open-market sale of 91,923 CBT 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
`M`	Option exercise	91,923	$62.24	$5.72M
`S`	Open-market sale	91,923	$86.41	$7.94M
`M`	Option exercise derivative · Employee Stock Option (Right to Buy)	91,923	—	—

Filing: Form 4 (Insider Transaction) Insider: Keohane Sean D (Director, President and CEO) Shares: 91,923 Est. Value: $7.94M

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 2 · 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. Cabot Corporation has 2 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 Large Proposed Insider Sale 2026-08-28

CBT Form 144 filed for proposed insider sale by Keohane Sean D (134,895 shares) ~$11.47M

Keohane Sean D filed a Form 144 with the SEC indicating intent to sell CBT (CABOT 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. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Keohane Sean D Shares: 134,895 Est. Value: $11.47M

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-24

CBT Form 144 filed for proposed insider sale by Keohane Sean D (2,779 shares) ~$237.6K

Filing: Form 144 (Proposed Sale Notice) Insider: Keohane Sean D Shares: 2,779 Est. Value: $237.6K

View on SEC EDGAR → Open Filing Document →

Material Events 3 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 3 in this period for Cabot 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 2026-09-15

CBT filed 8-K — material company event

CABOT 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 2026-08-21

CBT filed 8-K — material company event

CABOT 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 2026-08-14

CBT filed 8-K — material company event

CABOT 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 →

How we classify Cabot 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 CBT. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — CBT SEC Filings

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CBT 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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