S&T Bancorp, Inc.
US ˙ NasdaqGS ˙ US7838591011

SecuritySTBA / S&T Bancorp, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership458,711 shares
Latest Disclosed Value $ 19,187,882
Northern Trust Corp reports 2.21% increase in ownership of STBA / S&T Bancorp, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 458,711 shares of S&T Bancorp, Inc. (US:STBA) valued at $19,187,881 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 448,775 shares of S&T Bancorp, Inc.. This represents a change in shares of 2.21% during the quarter. The current value of the position is $20,797,957 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 S & T BANCORP COM 783859101 458,711 9,936 2.21 19,188 8.65 0.0005
2026-02-17 2025-12-31 13F S & T BANCORP COM 783859101 448,775 -36,044 -7.43 17,659 -3.10 0.0005
2025-11-14 2025-09-30 13F S & T BANCORP COM 783859101 484,819 -1,077 -0.22 18,224 -0.83 0.0005
2025-08-13 2025-06-30 13F S & T BANCORP COM 783859101 485,896 13,557 2.87 18,377 5.01 0.0025
2025-05-13 2025-03-31 13F S & T BANCORP COM 783859101 472,339 -11,074 -2.29 17,500 -5.28 0.0026
2025-02-14 2024-12-31 13F S & T BANCORP COM 783859101 483,413 86,317 21.74 18,476 10.86 0.0026
2024-11-13 2024-09-30 13F S & T BANCORP COM 783859101 397,096 14,426 3.77 16,666 30.44 0.0027
2024-08-14 2024-06-30 13F S & T BANCORP COM 783859101 382,670 -11,560 -2.93 12,777 1.04 0.0022
2024-05-14 2024-03-31 13F S & T BANCORP COM 783859101 394,230 -7,424 -1.85 12,647 -5.79 0.0022
2024-02-13 2023-12-31 13F S & T BANCORP COM 783859101 401,654 7,784 1.98 13,423 25.85 0.0024
2023-11-13 2023-09-30 13F S & T BANCORP COM 783859101 393,870 -6,204 -1.55 10,666 -1.95 0.0021
2023-08-11 2023-06-30 13F S & T BANCORP COM 783859101 400,074 953 0.24 10,878 -13.34 0.0021
2023-05-15 2023-03-31 13F S & T BANCORP COM 783859101 399,121 -8,546 -2.10 12,552 -9.92 0.0025
2023-02-13 2022-12-31 13F S & T BANCORP COM 783859101 407,667 -13,257 -3.15 13,934 12.94 0.0029
2022-11-14 2022-09-30 13F S & T BANCORP COM 783859101 420,924 -11,344 -2.62 12,338 4.06 0.0028
2022-08-12 2022-06-30 13F S & T BANCORP COM 783859101 432,268 3,147 0.73 11,857 -6.59 0.0025
2022-05-13 2022-03-31 13F S & T BANCORP COM 783859101 429,121 -5,008 -1.15 12,693 -7.24 0.0022
2022-02-08 2021-12-31 13F S & T BANCORP COM 783859101 434,129 17,077 4.09 13,683 11.33 0.0022
2021-11-15 2021-09-30 13F S & T BANCORP COM 783859101 417,052 -254,568 -37.90 12,291 -41.53 0.0022
2021-08-13 2021-06-30 13F S & T BANCORP COM 783859101 671,620 -5,250 -0.78 21,021 -7.30 0.0037
2021-05-12 2021-03-31 13F S & T BANCORP COM 783859101 676,870 -245,200 -26.59 22,676 -1.00 0.0042
2021-02-11 2020-12-31 13F S & T BANCORP COM 783859101 922,070 -15,614 -1.67 22,904 38.08 0.0045
2020-11-16 2020-09-30 13F S & T BANCORP COM 783859101 937,684 -15,368 -1.61 16,588 -25.78 0.0036
2020-08-14 2020-06-30 13F S & T BANCORP COM 783859101 953,052 -48,065 -4.80 22,349 -18.29 0.0053
2020-05-14 2020-03-31 13F S & T BANCORP COM 783859101 1,001,117 3,335 0.33 27,351 -31.96 0.0079
2020-02-14 2019-12-31 13F S & T BANCORP COM 783859101 997,782 58,421 6.22 40,201 17.15 0.0090
2019-11-13 2019-09-30 13F S & T BANCORP COM 783859101 939,361 7,498 0.80 34,315 -1.75 0.0082
2019-08-13 2019-06-30 13F S & T BANCORP COM 783859101 931,863 9,380 1.02 34,927 -4.22 0.0083
2019-05-13 2019-03-31 13F S & T BANCORP COM 783859101 922,483 -2,497 -0.27 36,466 4.19 0.0090
2019-02-12 2018-12-31 13F S & T BANCORP COM 783859101 924,980 -369 -0.04 35,001 -12.77 0.0098
2018-11-14 2018-09-30 13F S & T BANCORP COM 783859101 925,349 -22,807 -2.41 40,124 -2.13 0.0098
2018-09-18 2018-06-30 13F/A-1 S & T BANCORP COM 783859101 948,156 8,222 0.87 40,999 9.21 0.0104
2018-08-14 2018-06-30 13F S & T BANCORP COM 783859101 950,431 10,497 41,098
2018-05-09 2018-03-31 13F S & T BANCORP COM 783859101 939,934 -2,333 -0.25 37,542 0.09 0.0098
2018-02-14 2017-12-31 13F S & T BANCORP COM 783859101 942,267 -7,799 -0.82 37,510 -0.25 0.0095
2017-11-13 2017-09-30 13F S & T BANCORP COM 783859101 950,066 -1,827 -0.19 37,603 10.16 0.0098
2017-08-11 2017-06-30 13F S & T BANCORP COM 783859101 951,893 16,887 1.81 34,134 5.51 0.0095
2017-05-12 2017-03-31 13F S & T BANCORP COM 783859101 935,006 23,565 2.59 32,352 -9.08 0.0093
2017-02-13 2016-12-31 13F S & T BANCORP COM 783859101 911,441 24,025 2.71 35,582 38.31 0.0109
2016-11-09 2016-09-30 13F S & T BANCORP COM 783859101 887,416 24,184 2.80 25,727 21.89 0.0080
2016-08-12 2016-06-30 13F S & T BANCORP COM 783859101 863,232 3,776 0.44 21,106 -4.67 0.0069
2016-08-19 2016-03-31 13F/A-1 S & T BANCORP COM 783859101 859,456 1,900 0.22 22,139 -16.23 0.0073
2016-05-13 2016-03-31 13F S & T BANCORP COM 783859101 859,456 22,139
2016-02-12 2015-12-31 13F S & T BANCORP COM 783859101 857,556 -7,568 -0.87 26,429 -6.35 0.0088
2015-11-12 2015-09-30 13F S & T BANCORP COM 783859101 865,124 865,124 0.00 28,221 0.0094
2015-08-13 2015-06-30 13F S & T BANCORP COM 783859101 0 -793,802 -100.00 0 -100.00
2015-05-14 2015-03-31 13F S & T BANCORP COM 783859101 793,802 39,113 5.18 22,528 0.14 0.0068
2015-02-12 2014-12-31 13F S & T BANCORP COM 783859101 754,689 -4,463 -0.59 22,497 26.32 0.0068
2014-11-13 2014-09-30 13F S & T BANCORP COM 783859101 759,152 1,181 0.16 17,810 -5.45 0.0056
2014-08-14 2014-06-30 13F S & T BANCORP COM 783859101 757,971 -33,901 -4.28 18,836 0.37 0.0059
2014-05-14 2014-03-31 13F S & T BANCORP COM 783859101 791,872 -28,183 -3.44 18,767 -9.58 0.0059
2014-02-21 2013-12-31 13F/A-1 S & T BANCORP COM 783859101 820,055 -58 -0.01 20,756 4.50 0.0067
2014-02-12 2013-12-31 13F S & T BANCORP COM 783859101 820,055 20,756
2013-11-13 2013-09-30 13F S & T BANCORP COM 783859101 820,113 16,539 2.06 19,863 26.11 0.0070
2013-08-09 2013-06-30 13F S & T BANCORP COM 783859101 803,574 803,574 15,751 0.0057
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.