International Bancshares Corporation
US ˙ NasdaqGS ˙ US4590441030

SecurityIBOC / International Bancshares Corporation
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership7,040 shares
Latest Disclosed Value $ 473,732
Neuberger Berman Group LLC reports 1.37% increase in ownership of IBOC / International Bancshares Corporation

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 7,040 shares of International Bancshares Corporation (US:IBOC) valued at $473,722 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,945 shares of International Bancshares Corporation. This represents a change in shares of 1.37% during the quarter. The current value of the position is $499,840 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 INTERNATIONAL BANCSHARES Common 459044103 7,040 95 1.37 474 2.60 0.0004
2026-02-13 2025-12-31 13F INTERNATIONAL BANCSHARES Common 459044103 6,945 738 11.89 461 8.22 0.0003
2025-11-12 2025-09-30 13F INTERNATIONAL BANCSHARES Common 459044103 6,207 2,447 65.08 427 70.40 0.0003
2025-08-25 2025-06-30 13F/A-1 INTERNATIONAL BANCSHARES Common 459044103 3,760 37 0.99 250 6.84 0.0002
2025-08-13 2025-06-30 13F INTERNATIONAL BANCSHARES Common 459044103 3,760 37 250 0.0001
2025-05-13 2025-03-31 13F INTERNATIONAL BANCSHARES Common 459044103 3,723 485 14.98 235 14.71 0.0002
2025-02-13 2024-12-31 13F INTERNATIONAL BANCSHARES Common 459044103 3,238 -19,526 -85.78 205 -85.01 0.0002
2024-11-14 2024-09-30 13F INTERNATIONAL BANCSHARES Common 459044103 22,764 -12,752 -35.90 1,361 -32.99 0.0011
2024-11-14 2024-06-30 13F/A-1 INTERNATIONAL BANCSHARES Common 459044103 35,516 2,378 7.18 2,032 9.19 0.0017
2024-08-13 2024-06-30 13F INTERNATIONAL BANCSHARES Common 459044103 35,516 2,378 2,032 0.0017
2024-11-14 2024-03-31 13F/A-1 INTERNATIONAL BANCSHARES Common 459044103 33,138 1,738 5.54 1,860 9.09 0.0015
2024-05-13 2024-03-31 13F INTERNATIONAL BANCSHARES Common 459044103 33,138 1,738 1,860 0.0015
2024-11-14 2023-12-31 13F/A-2 INTERNATIONAL BANCSHARES Common 459044103 31,400 -9,520 -23.26 1,706 -3.84 0.0015
2024-02-09 2023-12-31 13F INTERNATIONAL BANCSHARES Common 459044103 31,400 -9,520 1,706 0.0015
2023-11-14 2023-09-30 13F INTERNATIONAL BANCSHARES Common 459044103 40,920 15,720 62.38 1,773 59.30 0.0016
2023-08-11 2023-06-30 13F INTERNATIONAL BANCSHARES Common 459044103 25,200 3,917 18.40 1,114 22.17 0.0010
2023-05-12 2023-03-31 13F INTERNATIONAL BANCSHARES Common 459044103 21,283 164 0.78 911 -5.69 0.0008
2023-02-13 2022-12-31 13F INTERNATIONAL BANCSHARES Common 459044103 21,119 -17,000 -44.60 966 -40.41 0.0009
2022-11-15 2022-09-30 13F INTERNATIONAL BANCSHARES Common 459044103 38,119 -57,642 -60.19 1,621 -57.76 0.0017
2022-08-15 2022-06-30 13F INTERNATIONAL BANCSHARES Common 459044103 95,761 -39,197 -29.04 3,838 -32.63 0.0039
2022-05-23 2022-03-31 13F/A-1 INTERNATIONAL BANCSHARES Common 459044103 134,958 -4,923 -3.52 5,697 -3.46 0.0048
2022-05-13 2022-03-31 13F INTERNATIONAL BANCSHARES Common 459044103 134,958 -4,923 5,667 0.0025
2022-02-11 2021-12-31 13F INTERNATIONAL BANCSHARES Common 459044103 139,881 9,210 7.05 5,901 9.02 0.0046
2021-11-12 2021-09-30 13F INTERNATIONAL BANCSHARES Common 459044103 130,671 671 0.52 5,413 -3.03 0.0047
2021-08-13 2021-06-30 13F INTERNATIONAL BANCSHARES Common 459044103 130,000 130,000 5,582 0.0049
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.