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  4. [144] CABOT CORP SEC Filing

Cabot insider plans $11.5M stock sale

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
144

Rhea-AI Filing Summary

CABOT CORP (CBT) is named as the issuer in a Form 144 filing relating to planned sales of its common stock by Sean D. Keohane. The notice covers up to 134,895 shares of common stock, to be sold following a stock option exercise on August 28, 2026, with sales reported on the NYSE.

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Shares covered by Form 144 134,895 shares of common stock Securities information section for planned sales as of 08/28/2026
Aggregate market value of shares covered $11,466,075.00 Market value associated with 134,895 CABOT CORP common shares
Recent sale on 08/07/2026 91,923 shares for $7,942,634.39 Securities sold during the past 3 months by Sean D. Keohane
Recent sale on 08/24/2026 2,779 shares for $237,604.50 Securities sold during the past 3 months by Sean D. Keohane
Planned sale date reference 08/28/2026 Date tied to stock option exercise and securities to be sold
Rule 144 regulatory
"See the definition of "person" in paragraph (a) of Rule 144."
Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.
stock option exercise financial
"Common | 08/28/2026 | Stock Option Exercise | Issuer"
A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.
attorney-in-fact regulatory
"as attorney-in-fact for Sean D. Keohane"
An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does this Form 144 filing mean for CABOT CORP (CBT)?
The filing reports that Sean D. Keohane has given notice under Rule 144 of an intent to sell up to 134,895 CABOT CORP common shares following a stock option exercise on August 28, 2026. It is a regulatory disclosure of potential insider sales.

How many CABOT CORP (CBT) shares are covered by the new Form 144 notice?
The notice covers up to 134,895 CABOT CORP common shares. These shares are associated with a stock option exercise dated August 28, 2026, and the planned sales are listed as occurring on the NYSE through Fidelity Brokerage Services LLC.

What is the aggregate market value of CABOT CORP (CBT) shares in this Form 144?
The Form 144 lists an aggregate market value of approximately $11,466,075.00 for the 134,895 CABOT CORP common shares covered under the notice, based on the representative market price information provided in the filing.

What CABOT CORP (CBT) stock sales has Sean D. Keohane made in the last 3 months?
The filing reports that Sean D. Keohane sold 91,923 CABOT CORP common shares on August 7, 2026 for about $7,942,634.39 and 2,779 shares on August 24, 2026 for about $237,604.50 during the prior three months.

Who is executing the CABOT CORP (CBT) Form 144 sale for Sean D. Keohane?
The securities are to be sold through Fidelity Brokerage Services LLC. The Form 144 is signed by Louis Kurnick as a duly authorized representative of Fidelity, acting as attorney-in-fact for Sean D. Keohane.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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144: Filer Information

144: Issuer Information

144: Securities Information



Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold


* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.



Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

144: Remarks and Signature

Source: View Original Filing on SEC EDGAR