Dimensional Fund Advisors Lp ownership in STBA / S&T Bancorp, Inc.

S&T Bancorp, Inc.

US ˙ NasdaqGS ˙ US7838591011

Security	STBA / S&T Bancorp, Inc.
Institution	Dimensional Fund Advisors Lp
Latest Disclosed Ownership	2,384,380 shares
Ownership	6.20%

2024-02-09 - Dimensional Fund Advisors Lp has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,384,380 shares of S&T Bancorp, Inc. (US:STBA). This represents 6.2 percent ownership of the company. In their previous filing dated 2023-02-10 , Dimensional Fund Advisors Lp had reported owning 2,202,992 shares, indicating an increase of 8.23 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2024-02-09	2024-02-09	13G/A	2,202,992	2,384,380	8.23	6.20	10.71
2023-02-10	2023-02-10	13G	1,887,170	2,202,992	16.74	5.60	17.40
2020-02-12	2020-02-12	13G/A	1,879,087	1,887,170	0.43	4.77	-11.17
2019-02-08	2019-02-08	13G/A	1,780,304	1,879,087	5.55	5.37	5.50
2018-02-09	2018-02-09	13G		1,780,304		5.09

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-07	2026-03-31	13F	S & T BANCORP	COM	783859101	2,345,177	6,583	0.28	98,098	6.60	0.0044
2026-02-12	2025-12-31	13F	S & T BANCORP	COM	783859101	2,338,594	-11,887	-0.51	92,024	4.15	0.0193
2025-11-12	2025-09-30	13F	S & T BANCORP	COM	783859101	2,350,481	-8,895	-0.38	88,354	-0.98	0.0190
2025-08-12	2025-06-30	13F	S & T BANCORP	COM	783859101	2,359,376	-28,124	-1.18	89,233	0.88	0.0207
2025-05-13	2025-03-31	13F	S & T BANCORP	COM	783859101	2,387,500	-32,677	-1.35	88,457	-4.37	0.0220
2025-02-13	2024-12-31	13F	S & T BANCORP	COM	783859101	2,420,177	-3,673	-0.15	92,500	-9.07	0.0222
2024-11-07	2024-09-30	13F	S & T BANCORP	COM	783859101	2,423,850	25,963	1.08	101,727	27.06	0.0247
2024-08-09	2024-06-30	13F	S & T BANCORP	COM	783859101	2,397,887	32,935	1.39	80,064	5.53	0.0209
2024-05-10	2024-03-31	13F	S & T BANCORP	COM	783859101	2,364,952	-19,428	-0.81	75,868	-4.79	0.0205
2024-02-07	2023-12-31	13F	S & T BANCORP	COM	783859101	2,384,380	30,384	1.29	79,687	25.01	0.0233
2023-11-09	2023-09-30	13F	S & T BANCORP	COM	783859101	2,353,996	968	0.04	63,746	-0.37	0.0209
2023-08-09	2023-06-30	13F	S & T BANCORP	COM	783859101	2,353,028	34,315	1.48	63,980	-12.26	0.0204
2023-05-12	2023-03-31	13F	S & T BANCORP	COM	783859101	2,318,713	115,721	5.25	72,923	97,130.67	0.0246
2023-02-09	2022-12-31	13F	S & T BANCORP	COM	783859101	2,202,992	106,458	5.08	75	-99.88	0.0222
2022-11-10	2022-09-30	13F	S & T BANCORP	COM	783859101	2,096,534	96,620	4.83	61,450	12.02	0.0236
2022-08-12	2022-06-30	13F	S & T BANCORP	COM	783859101	1,999,914	198,390	11.01	54,858	2.94	0.0197
2022-05-13	2022-03-31	13F	S & T BANCORP	COM	783859101	1,801,524	71,752	4.15	53,290	-2.26	0.0164
2022-02-09	2021-12-31	13F	S & T BANCORP	COM	783859101	1,729,772	-26,328	-1.50	54,522	5.35	0.0165
2021-11-12	2021-09-30	13F	S & T BANCORP	COM	783859101	1,756,100	-25,796	-1.45	51,753	-7.21	0.0167
2021-08-12	2021-06-30	13F	S & T BANCORP	COM	783859101	1,781,896	-9,800	-0.55	55,773	-7.08	0.0177
2021-05-14	2021-03-31	13F	S & T BANCORP	COM	783859101	1,791,696	-21,038	-1.16	60,022	33.30	0.0199
2021-03-08	2020-12-31	13F/A-2	S & T BANCORP	COM	783859101	1,812,734	6,183	0.34	45,028	40.90	0.0163
2021-02-11	2020-12-31	13F	S & T BANCORP	COM	783859101	1,812,734	6,183		45,028		16,261.7202
2020-11-12	2020-09-30	13F	S & T BANCORP	COM	783859101	1,806,551	-11,279	-0.62	31,958	-25.03	0.0136
2020-08-13	2020-06-30	13F	S & T BANCORP	COM	783859101	1,817,830	-50,201	-2.69	42,627	-16.47	0.0187
2020-05-14	2020-03-31	13F	S & T BANCORP	COM	783859101	1,868,031	-19,139	-1.01	51,034	-32.88	0.0266
2020-02-14	2019-12-31	13F	S & T BANCORP	COM	783859101	1,887,170	27,300	1.47	76,034	11.91	0.0277
2019-11-12	2019-09-30	13F	S & T BANCORP	COM	783859101	1,859,870	-8,870	-0.47	67,942	-3.00	0.0264
2019-08-13	2019-06-30	13F	S & T BANCORP	COM	783859101	1,868,740	5,459	0.29	70,040	-4.91	0.0272
2019-08-12	2019-03-31	13F/A-2	S & T BANCORP	COM	783859101	1,863,281	-15,806	-0.84	73,656	3.59	0.0293
2019-05-10	2019-03-31	13F	S & T BANCORP	COM	783859101	1,863,281	-15,806		73,656
2019-02-26	2018-12-31	13F/A-1	S & T BANCORP	COM	783859101	1,879,087	-10,453	-0.55	71,105	-13.21	0.0322
2019-02-13	2018-12-31	13F	S & T BANCORP	COM	783859101	1,879,087	-10,453		71,105
2018-11-13	2018-09-30	13F	S & T BANCORP	COM	783859101	1,889,540	-16,034	-0.84	81,930	-0.57	0.0312
2018-08-10	2018-06-30	13F	S & T BANCORP	COM	783859101	1,905,574	61,048	3.31	82,397	11.85	0.0328
2018-05-11	2018-03-31	13F	S & T BANCORP	COM	783859101	1,844,526	64,222	3.61	73,670	3.94	0.0307
2018-02-12	2017-12-31	13F	S & T BANCORP	COM	783859101	1,780,304	71,900	4.21	70,875	4.82	0.0294
2017-11-13	2017-09-30	13F	S & T BANCORP	COM	783859101	1,708,404	45,817	2.76	67,618	13.41	0.0295
2017-08-11	2017-06-30	13F	S & T BANCORP	COM	783859101	1,662,587	59,351	3.70	59,621	7.48	0.0275
2017-05-12	2017-03-31	13F	S & T BANCORP	COM	783859101	1,603,236	80,619	5.29	55,472	-6.68	0.0265
2017-02-09	2016-12-31	13F	S & T BANCORP	COM	783859101	1,522,617	115,394	8.20	59,444	45.72	0.0297
2016-11-10	2016-09-30	13F	S & T BANCORP	COM	783859101	1,407,223	20,212	1.46	40,794	20.30	0.0220
2016-08-09	2016-06-30	13F	S & T BANCORP	COM	783859101	1,387,011	10,371	0.75	33,911	-4.37	0.0195
2016-05-13	2016-03-31	13F	S & T BANCORP	COM	783859101	1,376,640	75,040	5.77	35,462	-11.60	0.0212
2016-02-10	2015-12-31	13F	S & T BANCORP	COM	783859101	1,301,600	63,667	5.14	40,116	-0.66	0.0250
2015-11-13	2015-09-30	13F	S & T BANCORP	COM	783859101	1,237,933	51,091	4.30	40,382	14.99	0.0265
2015-08-14	2015-06-30	13F	S & T BANCORP	COM	783859101	1,186,842	40,146	3.50	35,119	7.91	0.0215
2015-05-14	2015-03-31	13F	S & T BANCORP	COM	783859101	1,146,696	19,105	1.69	32,544	-3.19	0.0206
2015-02-06	2014-12-31	13F	S & T BANCORP	COM	783859101	1,127,591	42,404	3.91	33,615	32.04	0.0221
2014-11-13	2014-09-30	13F	S & T BANCORP	COM	783859101	1,085,187	9,104	0.85	25,459	-4.79	0.0180
2014-08-08	2014-06-30	13F	S & T BANCORP	COM	783859101	1,076,083	14,948	1.41	26,741	6.33	0.0186
2014-05-14	2014-03-31	13F	S & T BANCORP	COM	783859101	1,061,135	6,038	0.57	25,149	-5.82	0.0188
2014-02-12	2013-12-31	13F	S & T BANCORP	COM	783859101	1,055,097	16,625	1.60	26,704	6.17	0.0208
2013-11-13	2013-09-30	13F	S & T BANCORP	COM	783859101	1,038,472	5,622	0.54	25,151	24.24	0.0218
2013-08-15	2013-06-30	13F	S & T BANCORP	COM	783859101	1,032,850	1,032,850		20,244		0.0191

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.