Old National Bancorp
US ˙ NasdaqGS ˙ US6800331075

SecurityONB / Old National Bancorp
InstitutionMairs & Power Inc
Latest Disclosed Ownership433,191 shares
Latest Disclosed Value $ 9,573,521
Mairs & Power Inc reports 26.57% decrease in ownership of ONB / Old National Bancorp

On May 13, 2026 - Mairs & Power Inc filed a 13F-HR form disclosing ownership of 433,191 shares of Old National Bancorp (US:ONB) valued at $9,573,521 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 589,960 shares of Old National Bancorp. This represents a change in shares of -26.57% during the quarter. The current value of the position is $10,097,682 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)
2026-05-13 2026-03-31 13F OLD NATL BANCORP IND COM 680033107 433,191 -156,769 -26.57 9,574 -27.27 0.0978
2026-02-17 2025-12-31 13F OLD NATL BANCORP IND COM 680033107 589,960 -47,165 -7.40 13,162 -5.88 0.1267
2025-11-14 2025-09-30 13F OLD NATL BANCORP IND COM 680033107 637,125 -103,000 -13.92 13,985 -11.46 0.1314
2025-08-14 2025-06-30 13F OLD NATL BANCORP IND COM 680033107 740,125 -106,441 -12.57 15,794 -11.95 0.1559
2025-05-15 2025-03-31 13F OLD NATL BANCORP IND COM 680033107 846,566 -104,796 -11.02 17,939 -13.13 0.1867
2025-02-14 2024-12-31 13F OLD NATL BANCORP IND COM 680033107 951,362 -40,954 -4.13 20,649 11.52 0.1997
2024-11-14 2024-09-30 13F OLD NATL BANCORP IND COM 680033107 992,316 -481,000 -32.65 18,517 -26.89 0.1742
2024-08-14 2024-06-30 13F OLD NATL BANCORP IND COM 680033107 1,473,316 0 0.00 25,326 -1.26 0.2447
2024-05-15 2024-03-31 13F OLD NATL BANCORP IND COM 680033107 1,473,316 -129,970 -8.11 25,650 -5.28 0.2484
2024-02-14 2023-12-31 13F OLD NATL BANCORP IND COM 680033107 1,603,286 -560,416 -25.90 27,080 -13.93 0.2853
2023-11-14 2023-09-30 13F OLD NATL BANCORP IND COM 680033107 2,163,702 0 0.00 31,460 4.30 0.3692
2023-08-14 2023-06-30 13F OLD NATL BANCORP IND COM 680033107 2,163,702 -399,893 -15.60 30,162 -18.41 0.3280
2023-05-15 2023-03-31 13F OLD NATL BANCORP IND COM 680033107 2,563,595 0 0.00 36,967 -19.80 0.4265
2023-02-14 2022-12-31 13F OLD NATL BANCORP IND COM 680033107 2,563,595 -48,000 -1.84 46,093 7.16 0.5548
2022-11-14 2022-09-30 13F OLD NATL BANCORP IND COM 680033107 2,611,595 0 0.00 43,013 11.36 0.5427
2022-08-15 2022-06-30 13F OLD NATL BANCORP IND COM 680033107 2,611,595 -7,478 -0.29 38,625 -9.97 0.4629
2022-05-16 2022-03-31 13F OLD NATL BANCORP IND COM 680033107 2,619,073 179,168 7.34 42,900 -2.97 0.4321
2022-02-14 2021-12-31 13F OLD NATL BANCORP IND COM 680033107 2,439,905 -81,029 -3.21 44,211 3.47 0.4095
2021-11-15 2021-09-30 13F OLD NATL BANCORP IND COM 680033107 2,520,934 -18,300 -0.72 42,730 -4.44 0.4275
2021-08-16 2021-06-30 13F OLD NATL BANCORP IND COM 680033107 2,539,234 -12,800 -0.50 44,716 -9.40 0.4419
2021-05-14 2021-03-31 13F OLD NATL BANCORP IND COM 680033107 2,552,034 -759,840 -22.94 49,356 -10.01 0.5182
2021-02-16 2020-12-31 13F OLD NATL BANCORP IND COM 680033107 3,311,874 -141,380 -4.09 54,845 26.45 0.6094
2020-11-16 2020-09-30 13F OLD NATL BANCORP IND COM 680033107 3,453,254 0 0.00 43,373 -8.72 0.5417
2020-08-14 2020-06-30 13F OLD NATL BANCORP IND COM 680033107 3,453,254 141,515 4.27 47,517 8.78 0.6208
2020-05-15 2020-03-31 13F OLD NATL BANCORP IND COM 680033107 3,311,739 -23,000 -0.69 43,682 -28.38 0.6375
2020-02-14 2019-12-31 13F Old Natl Bancorp Ind Com COM 680033107 3,334,739 -334,373 -9.11 60,992 -3.38 0.6929
2019-11-14 2019-09-30 13F Old Natl Bancorp Ind Com COM 680033107 3,669,112 -1,248,000 -25.38 63,127 -22.61 0.7630
2019-08-14 2019-06-30 13F Old Natl Bancorp Ind Com COM 680033107 4,917,112 -31,000 -0.63 81,575 0.52 0.9788
2019-05-15 2019-03-31 13F Old Natl Bancorp Ind Com COM 680033107 4,948,112 0 0.00 81,149 6.49 0.9855
2019-02-14 2018-12-31 13F Old Natl Bancorp Ind Com COM 680033107 4,948,112 169,683 3.55 76,201 -17.37 1.0280
2018-11-14 2018-09-30 13F Old Natl Bancorp Ind Com COM 680033107 4,778,429 -402,910 -7.78 92,224 -4.31 1.0737
2018-08-14 2018-06-30 13F Old Natl Bancorp Ind COM 680033107 5,181,339 4,867,546 1,551.20 96,373 1,717.33 1.1952
2018-05-15 2018-03-31 13F Old Natl Bancorp Ind Com COM 680033107 313,793 313,793 5,303 0.0655
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.