Transaction · 0001193125-26-377202

Keohane Sean D

Keohane Sean D, PRES, reported an open-market or private sale at CABOT CORP involving 134895.000000 shares for an estimated $11466075.00. Reported holdings after the transaction were 404134.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SPRES
CBTCABOT CORP
Filing timeAug 31
Trade dateAug 28, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$83.29
Pre-filing
1mo ago +9.9%1w ago +2.3%1d ago +0.0%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

CBT price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
CBT since 2026-08-31Filed 3 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001193125-26-377202
Common Stock
Transaction date
Aug 28, 2026
Filed Aug 31, 2026, 11:00 PM · 3d delay
Shares
134k sh
$8.50k per share
Estimated value
-$1.14B
Computed from shares × price
Holdings after
404k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership Large Holdings Reduction Large Sale
+6score
Filing-only score

+6

Compact filing score computed from stored Form 4 facts. Version v1.

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

President and CEO

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    137,674 shares were subject to the option. The option vested over a three year period as follows: 30% on November 9, 2019, 30% on November 9, 2020, and 40% on November 9, 2021.

Original filing · 0001193125-26-377202
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