Seaboard Corporation
US ˙ NYSEAM ˙ US8115431079

SecuritySEB / Seaboard Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,361 shares
Latest Disclosed Value $ 7,695,121
Northern Trust Corp reports 5.10% increase in ownership of SEB / Seaboard Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,361 shares of Seaboard Corporation (US:SEB) valued at $7,695,121 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,295 shares of Seaboard Corporation. This represents a change in shares of 5.10% during the quarter. The current value of the position is $7,156,274 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)
2026-05-14 2026-03-31 13F SEABOARD CORP DEL COM 811543107 1,361 66 5.10 7,695 33.69 0.0002
2026-02-17 2025-12-31 13F SEABOARD CORP DEL COM 811543107 1,295 -870 -40.18 5,756 -27.09 0.0002
2025-11-14 2025-09-30 13F SEABOARD CORP DEL COM 811543107 2,165 -818 -27.42 7,896 -7.49 0.0010
2025-08-13 2025-06-30 13F SEABOARD CORP DEL COM 811543107 2,983 994 49.97 8,535 59.10 0.0012
2025-05-13 2025-03-31 13F SEABOARD CORP DEL COM 811543107 1,989 26 1.32 5,365 12.48 0.0008
2025-02-14 2024-12-31 13F SEABOARD CORP DEL COM 811543107 1,963 258 15.13 4,769 -10.83 0.0007
2024-11-13 2024-09-30 13F SEABOARD CORP DEL COM 811543107 1,705 588 52.64 5,349 51.50 0.0009
2024-08-14 2024-06-30 13F SEABOARD CORP DEL COM 811543107 1,117 23 2.10 3,531 0.11 0.0006
2024-05-14 2024-03-31 13F SEABOARD CORP DEL COM 811543107 1,094 -39 -3.44 3,527 -12.81 0.0006
2024-02-13 2023-12-31 13F SEABOARD CORP DEL COM 811543107 1,133 26 2.35 4,045 -2.65 0.0007
2023-11-13 2023-09-30 13F SEABOARD CORP DEL COM 811543107 1,107 -305 -21.60 4,155 -17.37 0.0008
2023-08-11 2023-06-30 13F SEABOARD CORP DEL COM 811543107 1,412 -28 -1.94 5,028 -7.39 0.0010
2023-05-15 2023-03-31 13F SEABOARD CORP DEL COM 811543107 1,440 22 1.55 5,429 1.40 0.0011
2023-02-13 2022-12-31 13F SEABOARD CORP DEL COM 811543107 1,418 10 0.71 5,353 11.73 0.0011
2022-11-14 2022-09-30 13F SEABOARD CORP DEL COM 811543107 1,408 -5 -0.35 4,791 -12.67 0.0011
2022-08-12 2022-06-30 13F SEABOARD CORP DEL COM 811543107 1,413 -16 -1.12 5,486 -8.72 0.0012
2022-05-13 2022-03-31 13F SEABOARD CORP DEL COM 811543107 1,429 -46 -3.12 6,010 3.57 0.0011
2022-02-08 2021-12-31 13F SEABOARD CORP DEL COM 811543107 1,475 -78 -5.02 5,803 -8.87 0.0010
2021-11-15 2021-09-30 13F SEABOARD CORP DEL COM 811543107 1,553 -195 -11.16 6,368 -5.84 0.0011
2021-08-13 2021-06-30 13F SEABOARD CORP DEL COM 811543107 1,748 181 11.55 6,763 16.93 0.0012
2021-05-12 2021-03-31 13F SEABOARD CORP DEL COM 811543107 1,567 74 4.96 5,784 27.82 0.0011
2021-02-11 2020-12-31 13F SEABOARD CORP DEL COM 811543107 1,493 -25 -1.65 4,525 5.04 0.0009
2020-11-16 2020-09-30 13F SEABOARD COM 811543107 1,518 -102 -6.30 4,308 -9.32 0.0009
2020-08-14 2020-06-30 13F SEABOARD COM 811543107 1,620 -102 -5.92 4,751 -1.92 0.0011
2020-05-14 2020-03-31 13F SEABOARD COM 811543107 1,722 54 3.24 4,844 -31.66 0.0014
2020-02-14 2019-12-31 13F SEABOARD COM 811543107 1,668 17 1.03 7,088 -1.90 0.0016
2019-11-13 2019-09-30 13F SEABOARD COM 811543107 1,651 -55 -3.22 7,225 2.38 0.0017
2019-08-13 2019-06-30 13F SEABOARD COM 811543107 1,706 -12 -0.70 7,057 -4.14 0.0017
2019-05-13 2019-03-31 13F SEABOARD COM 811543107 1,718 -13 -0.75 7,362 20.22 0.0018
2019-02-12 2018-12-31 13F SEABOARD COM 811543107 1,731 -18 -1.03 6,124 -5.64 0.0017
2018-11-14 2018-09-30 13F SEABOARD COM 811543107 1,749 -194 -9.98 6,490 -15.71 0.0016
2018-09-18 2018-06-30 13F/A-1 SEABOARD COM 811543107 1,943 466 31.55 7,700 22.24 0.0020
2018-08-14 2018-06-30 13F SEABOARD COM 811543107 2,020 543 8,004
2018-05-09 2018-03-31 13F SEABOARD COM 811543107 1,477 50 3.50 6,299 0.10 0.0016
2018-02-14 2017-12-31 13F SEABOARD COM 811543107 1,427 42 3.03 6,293 0.85 0.0016
2017-11-13 2017-09-30 13F SEABOARD COM 811543107 1,385 -64 -4.42 6,240 7.79 0.0016
2017-08-11 2017-06-30 13F SEABOARD COM 811543107 1,449 -1,791 -55.28 5,789 -57.15 0.0016
2017-05-12 2017-03-31 13F SEABOARD COM 811543107 3,240 37 1.16 13,510 6.73 0.0039
2017-02-13 2016-12-31 13F SEABOARD COM 811543107 3,203 80 2.56 12,658 17.83 0.0039
2016-11-09 2016-09-30 13F SEABOARD COM 811543107 3,123 84 2.76 10,743 23.13 0.0033
2016-08-12 2016-06-30 13F SEABOARD COM 811543107 3,039 80 2.70 8,725 -1.81 0.0028
2016-08-19 2016-03-31 13F/A-1 SEABOARD COM 811543107 2,959 53 1.82 8,886 5.63 0.0029
2016-05-13 2016-03-31 13F SEABOARD COM 811543107 2,959 8,886
2016-02-12 2015-12-31 13F SEABOARD COM 811543107 2,906 42 1.47 8,412 -4.60 0.0028
2015-11-12 2015-09-30 13F SEABOARD COM 811543107 2,864 2,864 0.00 8,818 0.0029
2015-08-13 2015-06-30 13F SEABOARD COM 811543107 0 -3,166 -100.00 0 -100.00
2015-05-14 2015-03-31 13F SEABOARD COM 811543107 3,166 -22 -0.69 13,082 -2.25 0.0039
2015-02-12 2014-12-31 13F SEABOARD COM 811543107 3,188 -150 -4.49 13,383 49.88 0.0040
2014-11-13 2014-09-30 13F SEABOARD COM 811543107 3,338 -267 -7.41 8,929 -18.00 0.0028
2014-08-14 2014-06-30 13F SEABOARD COM 811543107 3,605 -430 -10.66 10,889 2.95 0.0034
2014-05-14 2014-03-31 13F SEABOARD COM 811543107 4,035 -293 -6.77 10,577 -12.57 0.0033
2014-02-21 2013-12-31 13F/A-1 SEABOARD COM 811543107 4,328 73 1.72 12,097 3.46 0.0039
2014-02-12 2013-12-31 13F SEABOARD COM 811543107 4,328 12,097
2013-11-13 2013-09-30 13F SEABOARD COM 811543107 4,255 -205 -4.60 11,693 -3.18 0.0041
2013-08-09 2013-06-30 13F SEABOARD COM 811543107 4,460 4,460 12,077 0.0044
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.