메인 스트리트 캐피털 코퍼레이션
US ˙ NYSE ˙ US56035L1044

SecurityMAIN / Main Street Capital Corporation
InstitutionDearborn Partners Llc
Latest Disclosed Ownership28,832 shares
Latest Disclosed Value $ 1,526,943
Dearborn Partners Llc reports 1.84% decrease in ownership of MAIN / Main Street Capital Corporation

On May 12, 2026 - Dearborn Partners Llc filed a 13F-HR form disclosing ownership of 28,832 shares of Main Street Capital Corporation (US:MAIN) valued at $1,526,943 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 29,372 shares of Main Street Capital Corporation. This represents a change in shares of -1.84% during the quarter. The current value of the position is $1,493,786 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)
2026-05-12 2026-03-31 13F Main Street Capital COM 56035L104 28,832 -540 -1.84 1,527 -13.93 0.0799
2026-02-11 2025-12-31 13F Main Street Capital COM 56035L104 29,372 -1,980 -6.32 1,774 -11.04 0.0886
2025-11-10 2025-09-30 13F Main Street Capital COM 56035L104 31,352 -2,510 -7.41 1,994 -0.40 0.0935
2025-08-14 2025-06-30 13F Main Street Capital COM 56035L104 33,862 -342 -1.00 2,001 3.46 0.0947
2025-05-08 2025-03-31 13F Main Street Capital COM 56035L104 34,204 -1,150 -3.25 1,935 -6.62 0.0929
2025-02-07 2024-12-31 13F Main Street Capital COM 56035L104 35,354 87 0.25 2,071 17.14 0.0868
2024-11-06 2024-09-30 13F Main Street Capital COM 56035L104 35,267 1,036 3.03 1,768 2.31 0.0718
2024-07-26 2024-06-30 13F Main Street Capital COM 56035L104 34,231 -1,915 -5.30 1,728 1.05 0.0747
2024-05-08 2024-03-31 13F Main Street Capital COM 56035L104 36,146 1,620 4.69 1,710 14.61 0.0734
2024-01-26 2023-12-31 13F Main Street Capital COM 56035L104 34,526 -294 -0.84 1,493 5.52 0.0544
2023-11-01 2023-09-30 13F Main Street Capital COM 56035L104 34,820 -395 -1.12 1,415 0.35 0.0555
2023-08-03 2023-06-30 13F Main Street Capital COM 56035L104 35,215 -1,271 -3.48 1,410 -2.08 0.0539
2023-05-04 2023-03-31 13F Main Street Capital COM 56035L104 36,486 -202 -0.55 1,440 6.20 0.0566
2023-02-02 2022-12-31 13F Main Street Capital COM 56035L104 36,688 10 0.03 1,356 9.81 0.0547
2022-11-21 2022-09-30 13F/A-1 Main Street Capital COM 56035L104 36,678 -571 -1.53 1,234 -14.01 0.0544
2022-10-25 2022-09-30 13F Main Street Capital COM 56035L104 36,678 -571 1,234 0.0509
2022-07-20 2022-06-30 13F Main Street Capital COM 56035L104 37,249 -1,374 -3.56 1,435 -12.87 0.0606
2022-05-04 2022-03-31 13F Main Street Capital COM 56035L104 38,623 4,058 11.74 1,647 6.19 0.0625
2022-01-28 2021-12-31 13F Main Street Capital COM 56035L104 34,565 -1,074 -3.01 1,551 5.87 0.0562
2021-10-27 2021-09-30 13F Main Street Capital COM 56035L104 35,639 -6 -0.02 1,465 0.00 0.0595
2021-07-26 2021-06-30 13F Main Street Capital COM 56035L104 35,645 838 2.41 1,465 7.48 0.0589
2021-04-29 2021-03-31 13F Main Street Capital COM 56035L104 34,807 785 2.31 1,363 24.13 0.0581
2021-01-27 2020-12-31 13F Main Street Capital COM 56035L104 34,022 11,901 53.80 1,098 67.89 0.0500
2020-10-20 2020-09-30 13F Main Street Capital COM 56035L104 22,121 -2,478 -10.07 654 -14.62 0.0326
2020-07-30 2020-06-30 13F Main Street Capital COM 56035L104 24,599 1,435 6.19 766 61.26 0.0414
2020-05-11 2020-03-31 13F Main Street Capital COM 56035L104 23,164 3,484 17.70 475 -43.99 0.0295
2020-01-28 2019-12-31 13F Main Street Capital COM 56035L104 19,680 5,031 34.34 848 33.97 0.0432
2019-10-29 2019-09-30 13F Main Street Capital COM 56035L104 14,649 9,471 182.91 633 197.18 0.0366
2019-07-29 2019-06-30 13F Main Street Capital COM 56035L104 5,178 5,178 213 0.0130
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.