Cabot Corporation
US ˙ NYSE ˙ US1270551013

SecurityCBT / Cabot Corporation
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership7,733 shares
Latest Disclosed Value $ 582,372
Boston Trust Walden Corp ownership in CBT / Cabot Corporation

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 7,733 shares of Cabot Corporation (US:CBT) valued at $582,372 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 7,733 shares of Cabot Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $659,393 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F CABOT COMMON STOCK 127055101 7,733 0 0.00 582 13.67 0.0029
2026-01-28 2025-12-31 13F CABOT COMMON STOCK 127055101 7,733 -567 -6.83 513 -18.86 0.0039
2025-10-17 2025-09-30 13F CABOT COMMON STOCK 127055101 8,300 -300 -3.49 631 -2.17 0.0046
2025-07-28 2025-06-30 13F CABOT COMMON STOCK 127055101 8,600 0 0.00 645 -9.79 0.0046
2025-04-21 2025-03-31 13F CABOT COMMON STOCK 127055101 8,600 0 0.00 715 -8.92 0.0052
2025-01-24 2024-12-31 13F CABOT COMMON STOCK 127055101 8,600 0 0.00 785 -18.31 0.0055
2024-10-24 2024-09-30 13F CABOT COMMON STOCK 127055101 8,600 0 0.00 961 21.65 0.0067
2024-07-19 2024-06-30 13F CABOT COMMON STOCK 127055101 8,600 -200 -2.27 790 -2.59 0.0059
2024-04-22 2024-03-31 13F CABOT COMMON STOCK 127055101 8,800 0 0.00 811 10.49 0.0058
2024-01-24 2023-12-31 13F CABOT COMMON STOCK 127055101 8,800 0 0.00 735 20.53 0.0055
2023-10-18 2023-09-30 13F CABOT COMMON STOCK 127055101 8,800 -59 -0.67 610 2.87 0.0051
2023-07-24 2023-06-30 13F CABOT COMMON STOCK 127055101 8,859 0 0.00 593 -12.68 0.0049
2023-04-19 2023-03-31 13F CABOT COMMON STOCK 127055101 8,859 0 0.00 679 14.53 0.0059
2023-01-20 2022-12-31 13F CABOT COMMON STOCK 127055101 8,859 0 0.00 592 4.59 0.0052
2022-10-19 2022-09-30 13F CABOT COMMON STOCK 127055101 8,859 -200 -2.21 566 -2.08 0.0056
2022-07-22 2022-06-30 13F CABOT COMMON STOCK 127055101 9,059 0 0.00 578 -6.77 0.0055
2022-04-20 2022-03-31 13F CABOT COMMON STOCK 127055101 9,059 -100 -1.09 620 20.39 0.0051
2022-01-21 2021-12-31 13F CABOT COMMON STOCK 127055101 9,159 0 0.00 515 12.20 0.0041
2021-10-25 2021-09-30 13F CABOT COMMON STOCK 127055101 9,159 0 0.00 459 -11.90 0.0041
2021-07-22 2021-06-30 13F CABOT COMMON STOCK 127055101 9,159 1,486 19.37 521 29.60 0.0046
2021-04-21 2021-03-31 13F CABOT COMMON STOCK 127055101 7,673 0 0.00 402 16.86 0.0039
2021-01-15 2020-12-31 13F CABOT COMMON STOCK 127055101 7,673 0 0.00 344 24.64 0.0037
2020-10-14 2020-09-30 13F CABOT COMMON STOCK 127055101 7,673 0 0.00 276 -2.82 0.0034
2020-07-23 2020-06-30 13F CABOT COMMON STOCK 127055101 7,673 0 0.00 284 42.00 0.0038
2020-04-24 2020-03-31 13F/A-1 CABOT COMMON STOCK 127055101 7,673 -100 -1.29 200 -45.80 0.0032
2020-04-21 2020-03-31 13F CABOT COMMON STOCK 127055101 7,673 -100 200 1,773.4606
2020-01-10 2019-12-31 13F CABOT COMMON STOCK 127055101 7,773 0 0.00 369 4.83 0.0043
2019-10-21 2019-09-30 13F CABOT COMMON STOCK 127055101 7,773 0 0.00 352 -5.12 0.0044
2019-07-25 2019-06-30 13F CABOT COMMON STOCK 127055101 7,773 0 0.00 371 14.51 0.0048
2019-04-16 2019-03-31 13F CABOT COMMON STOCK 127055101 7,773 0 0.00 324 -2.99 0.0044
2019-01-17 2018-12-31 13F CABOT COMMON STOCK 127055101 7,773 -1,791 -18.73 334 -44.33 0.0053
2018-10-23 2018-09-30 13F CABOT COMMON STOCK 127055101 9,564 0 0.00 600 1.52 0.0083
2018-07-25 2018-06-30 13F CABOT COMMON STOCK 127055101 9,564 0 0.00 591 10.88 0.0087
2018-04-13 2018-03-31 13F CABOT COMMON STOCK 127055101 9,564 -450 -4.49 533 -13.61 0.0081
2018-01-29 2017-12-31 13F CABOT COMMON STOCK 127055101 10,014 0 0.00 617 10.38 0.0090
2017-10-13 2017-09-30 13F CABOT COMMON STOCK 127055101 10,014 0 0.00 559 4.49 0.0087
2017-07-19 2017-06-30 13F CABOT COMMON STOCK 127055101 10,014 10,014 535 0.0086
2014-10-23 2014-09-30 13F CABOT COMMON STOCK 127055101 0 -4,198 -100.00 0 -100.00
2014-08-01 2014-06-30 13F CABOT COMMON STOCK 127055101 4,198 -1,085 -20.54 243 -22.12 0.0035
2014-04-11 2014-03-31 13F CABOT COMMON STOCK 127055101 5,283 -400 -7.04 312 6.85 0.0046
2014-02-11 2013-12-31 13F CABOT COMMON STOCK 127055101 5,683 5,683 292 0.0043
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.