Cabot Corporation
US ˙ NYSE ˙ US1270551013

SecurityCBT / Cabot Corporation
Institution1st Source Bank
Latest Disclosed Ownership11,128 shares
Latest Disclosed Value $ 838,050
1st Source Bank ownership in CBT / Cabot Corporation

On May 4, 2026 - 1st Source Bank filed a 13F-HR form disclosing ownership of 11,128 shares of Cabot Corporation (US:CBT) valued at $838,050 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 11,128 shares of Cabot Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $948,885 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)
2026-05-04 2026-03-31 13F CABOT COM 127055101 11,128 0 0.00 838 13.70 0.0432
2026-02-05 2025-12-31 13F CABOT COM 127055101 11,128 0 0.00 738 -12.88 0.0387
2025-11-12 2025-09-30 13F CABOT COM 127055101 11,128 0 0.00 846 1.44 0.0446
2025-08-07 2025-06-30 13F CABOT COM 127055101 11,128 -478 -4.12 835 -13.49 0.0460
2025-05-05 2025-03-31 13F CABOT COM 127055101 11,606 0 0.00 965 -8.97 0.0569
2025-02-10 2024-12-31 13F Cabot COM 127055101 11,606 0 0.00 1,060 -18.35 0.0606
2024-12-11 2024-09-30 13F Cabot COM 127055101 11,606 0 0.00 1,297 21.67 0.0732
2024-08-08 2024-06-30 13F CABOT COM 127055101 11,606 48 0.42 1,066 0.09 0.0624
2024-05-09 2024-03-31 13F CABOT COM 127055101 11,558 10 0.09 1,066 10.48 0.0619
2024-02-08 2023-12-31 13F CABOT COM 127055101 11,548 0 0.00 964 20.65 0.0583
2023-11-09 2023-09-30 13F CABOT COM 127055101 11,548 0 0.00 800 3.50 0.0545
2023-08-09 2023-06-30 13F CABOT COM 127055101 11,548 -145 -1.24 772 -13.84 0.0499
2023-05-09 2023-03-31 13F CABOT COM 127055101 11,693 0 0.00 896 14.72 0.0596
2023-02-13 2022-12-31 13F CABOT COM 127055101 11,693 0 0.00 782 4.55 0.0513
2022-11-04 2022-09-30 13F CABOT COM 127055101 11,693 0 0.00 747 0.13 0.0543
2022-08-05 2022-06-30 13F CABOT COM 127055101 11,693 0 0.00 746 -6.75 0.0527
2022-05-05 2022-03-31 13F CABOT COM 127055101 11,693 0 0.00 800 21.77 0.0492
2022-02-09 2021-12-31 13F CABOT COM 127055101 11,693 0 0.00 657 12.12 0.0384
2021-11-05 2021-09-30 13F CABOT COM 127055101 11,693 -387 -3.20 586 -14.83 0.0369
2021-08-03 2021-06-30 13F CABOT COM 127055101 12,080 0 0.00 688 8.69 0.0434
2021-05-07 2021-03-31 13F CABOT COM 127055101 12,080 0 0.00 633 16.79 0.0419
2021-02-05 2020-12-31 13F CABOT COM 127055101 12,080 -4,800 -28.44 542 -10.86 0.0395
2020-10-30 2020-09-30 13F CABOT COM 127055101 16,880 0 0.00 608 -2.72 0.0518
2020-08-07 2020-06-30 13F CABOT COM 127055101 16,880 64 0.38 625 42.37 0.0537
2020-04-29 2020-03-31 13F CABOT COM 127055101 16,816 -87 -0.51 439 -45.33 0.0442
2020-01-27 2019-12-31 13F CABOT COM 127055101 16,903 2 0.01 803 4.83 0.0602
2019-11-06 2019-09-30 13F CABOT COM 127055101 16,901 -229 -1.34 766 -6.24 0.0628
2019-07-29 2019-06-30 13F CABOT COM 127055101 17,130 330 1.96 817 16.88 0.0668
2019-04-29 2019-03-31 13F CABOT COM 127055101 16,800 0 0.00 699 -3.05 0.0596
2019-02-11 2018-12-31 13F CABOT COM 127055101 16,800 0 0.00 721 -31.59 0.0701
2018-10-31 2018-09-30 13F CABOT COM 127055101 16,800 0 0.00 1,054 1.54 0.0836
2018-08-02 2018-06-30 13F CABOT COM 127055101 16,800 0 0.00 1,038 10.90 0.0843
2018-04-24 2018-03-31 13F CABOT COM 127055101 16,800 0 0.00 936 -9.57 0.0775
2018-02-13 2017-12-31 13F CABOT COM 127055101 16,800 0 0.00 1,035 10.46 0.0852
2017-10-27 2017-09-30 13F CABOT COM 127055101 16,800 0 0.00 937 4.34 0.0779
2017-07-26 2017-06-30 13F CABOT COM 127055101 16,800 0 0.00 898 -10.74 0.0773
2017-04-26 2017-03-31 13F CABOT COM 127055101 16,800 -110 -0.65 1,006 17.66 0.0891
2017-02-09 2016-12-31 13F CABOT COM 127055101 16,910 -39 -0.23 855 -3.72 0.0812
2016-10-27 2016-09-30 13F CABOT COM 127055101 16,949 -161 -0.94 888 13.70 0.0938
2016-07-29 2016-06-30 13F CABOT COM 127055101 17,110 0 0.00 781 -5.56 0.0882
2016-04-26 2016-03-31 13F CABOT COM 127055101 17,110 -58 -0.34 827 17.81 0.0923
2016-01-29 2015-12-31 13F CABOT COM 127055101 17,168 274 1.62 702 31.71 0.0815
2015-10-20 2015-09-30 13F CABOT COM 127055101 16,894 -53 -0.31 533 -15.66 0.0611
2015-08-04 2015-06-30 13F CABOT COM 127055101 16,947 35 0.21 632 -16.95 0.0685
2015-04-27 2015-03-31 13F CABOT COM 127055101 16,912 112 0.67 761 3.26 0.0912
2015-02-10 2014-12-31 13F CABOT COM 127055101 16,800 0 0.00 737 -13.60 0.0886
2014-10-30 2014-09-30 13F CABOT COM 127055101 16,800 0 0.00 853 -12.42 0.1131
2014-07-25 2014-06-30 13F CABOT COM 127055101 16,800 -400 -2.33 974 -4.13 0.1257
2014-04-28 2014-03-31 13F CABOT COM 127055101 17,200 0 0.00 1,016 14.93 0.1356
2014-02-13 2013-12-31 13F CABOT COM 127055101 17,200 -600 -3.37 884 16.32 0.1188
2013-11-13 2013-09-30 13F CABOT COM 127055101 17,800 0 0.00 760 14.11 0.1127
2013-08-08 2013-06-30 13F CABOT COM 127055101 17,800 17,800 666 0.1125
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.