Main Street Capital Corporation
US ˙ NYSE ˙ US56035L1044

SecurityMAIN / Main Street Capital Corporation
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership12,526 shares
Latest Disclosed Value $ 663,370
Mercer Global Advisors Inc /adv reports 7.79% decrease in ownership of MAIN / Main Street Capital Corporation

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 12,526 shares of Main Street Capital Corporation (US:MAIN) valued at $663,377 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,584 shares of Main Street Capital Corporation. This represents a change in shares of -7.79% during the quarter. The current value of the position is $648,972 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)
2026-05-15 2026-03-31 13F MAIN STR CAP COM 56035L104 12,526 -1,058 -7.79 663 -19.15 0.0010
2026-02-17 2025-12-31 13F MAIN STR CAP COM 56035L104 13,584 1,172 9.44 820 3.93 0.0013
2025-11-14 2025-09-30 13F MAIN STR CAP COM 56035L104 12,412 -816 -6.17 789 1.02 0.0013
2025-08-14 2025-06-30 13F MAIN STR CAP COM 56035L104 13,228 -80 -0.60 782 3.86 0.0016
2025-05-15 2025-03-31 13F MAIN STR CAP COM 56035L104 13,308 -2,075 -13.49 753 -16.54 0.0017
2025-02-14 2024-12-31 13F MAIN STR CAP COM 56035L104 15,383 -56,225 -78.52 901 -74.87 0.0022
2024-11-14 2024-09-30 13F MAIN STR CAP COM 56035L104 71,608 6,189 9.46 3,585 8.54 0.0084
2024-08-12 2024-06-30 13F MAIN STR CAP COM 56035L104 65,419 4,184 6.83 3,303 0.0090
2024-05-15 2024-03-31 13F MAIN STR CAP COM 56035L104 61,235 6,260 11.39 0 0.0009
2024-02-15 2023-12-31 13F MAIN STR CAP COM 56035L104 54,975 46,572 554.23 0 0.0002
2023-11-15 2023-09-30 13F/A-1 MAIN STR CAP COM 56035L104 8,403 1,105 15.14 0 0.0013
2023-11-14 2023-09-30 13F MAIN STR CAP COM 56035L104 8,403 1,105 0 0.0013
2023-08-14 2023-06-30 13F MAIN STR CAP COM 56035L104 7,298 -1,266 -14.78 0 0.0012
2023-05-16 2023-03-31 13F MAIN STR CAP COM 56035L104 8,564 445 5.48 0 0.0015
2023-02-09 2022-12-31 13F MAIN STR CAP COM 56035L104 8,119 204 2.58 0 -100.00 0.0015
2022-11-15 2022-09-30 13F MAIN STR CAP COM 56035L104 7,915 487 6.56 266 -6.99 0.0016
2022-08-10 2022-06-30 13F MAIN STR CAP COM 56035L104 7,428 -778 -9.48 286 -18.29 0.0018
2022-05-10 2022-03-31 13F MAIN STR CAP COM 56035L104 8,206 20 0.24 350 -4.63 0.0021
2022-02-04 2021-12-31 13F MAIN STR CAP COM 56035L104 8,186 1,000 13.92 367 24.41 0.0023
2021-11-10 2021-09-30 13F MAIN STR CAP COM 56035L104 7,186 -425 -5.58 295 -5.75 0.0021
2021-08-10 2021-06-30 13F MAIN STR CAP COM 56035L104 7,611 -6 -0.08 313 5.03 0.0024
2021-08-10 2021-03-31 13F/A-1 MAIN STR CAP COM 56035L104 7,617 1,328 21.12 298 46.80 0.0027
2021-05-11 2021-03-31 13F MAIN STR CAP COM 56035L104 7,617 1,328 298 0.0029
2021-02-12 2020-12-31 13F MAIN STR CAP COM 56035L104 6,289 -1,873 -22.95 203 -15.77 0.0025
2020-12-10 2020-09-30 13F MAIN STR CAP COM 56035L104 8,162 1,157 16.52 241 10.55 0.0036
2020-08-10 2020-06-30 13F MAIN STR CAP COM 56035L104 7,005 7,005 218 0.0040
2020-05-16 2020-03-31 13F MAIN STREET CAPITAL CORP COM COM 56035L104 0 -9,129 -100.00 0 -100.00
2020-02-13 2019-12-31 13F MAIN STREET CAPITAL CORP COM COM 56035L104 9,129 258 2.91 394 2.87 0.0079
2019-11-12 2019-09-30 13F MAIN STREET CAPITAL CORP COM COM 56035L104 8,871 2,754 45.02 383 51.98 0.0090
2019-08-14 2019-06-30 13F MAIN STREET CAPITAL CORP COM COM 56035L104 6,117 400 7.00 252 18.31 0.0067
2019-04-23 2019-03-31 13F/A-1 MAIN STREET CAPITAL CORP COM COM 56035L104 5,717 5,717 213 0.0077
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.