메인 스트리트 캐피털 코퍼레이션
US ˙ NYSE ˙ US56035L1044

SecurityMAIN / Main Street Capital Corporation
InstitutionD.B. Root & Company, LLC
Latest Disclosed Ownership12,688 shares
Latest Disclosed Value $ 671,956
D.B. Root & Company, LLC reports 0.13% decrease in ownership of MAIN / Main Street Capital Corporation

On May 12, 2026 - D.B. Root & Company, LLC filed a 13F-HR form disclosing ownership of 12,688 shares of Main Street Capital Corporation (US:MAIN) valued at $671,956 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 12,705 shares of Main Street Capital Corporation. This represents a change in shares of -0.13% during the quarter. The current value of the position is $657,365 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 STR CAP COM 56035L104 12,688 -17 -0.13 672 -12.52 0.1605
2026-02-03 2025-12-31 13F MAIN STR CAP COM 56035L104 12,705 -26 -0.20 767 -5.19 0.1872
2025-11-06 2025-09-30 13F MAIN STR CAP COM 56035L104 12,731 -130 -1.01 810 6.45 0.2055
2025-07-22 2025-06-30 13F MAIN STR CAP COM 56035L104 12,861 -481 -3.61 760 0.80 0.2244
2025-05-14 2025-03-31 13F MAIN STR CAP COM 56035L104 13,342 -115 -0.85 755 -4.31 0.2437
2025-01-17 2024-12-31 13F MAIN STR CAP COM 56035L104 13,457 -662 -4.69 788 11.46 0.2507
2024-10-31 2024-09-30 13F MAIN STR CAP COM 56035L104 14,119 -3,970 -21.95 708 -22.56 0.2333
2024-07-15 2024-06-30 13F MAIN STR CAP COM 56035L104 18,089 -12,181 -40.24 913 -36.24 0.3116
2024-04-17 2024-03-31 13F MAIN STR CAP COM 56035L104 30,270 -1,246 -3.95 1,432 5.14 0.4840
2024-01-16 2023-12-31 13F MAIN STR CAP COM 56035L104 31,516 -322 -1.01 1,362 5.34 0.4939
2023-11-03 2023-09-30 13F MAIN STR CAP COM 56035L104 31,838 229 0.72 1,294 2.21 0.5042
2023-07-18 2023-06-30 13F MAIN STR CAP COM 56035L104 31,609 1,125 3.69 1,265 5.24 0.4786
2023-04-18 2023-03-31 13F MAIN STR CAP COM 56035L104 30,484 1,574 5.44 1,203 12.55 0.4733
2023-01-27 2022-12-31 13F MAIN STR CAP COM 56035L104 28,910 2,032 7.56 1,068 18.14 0.4513
2022-10-26 2022-09-30 13F Main Street Capital COM 56035L104 26,878 181 0.68 904 -12.06 0.4116
2022-07-21 2022-06-30 13F Main Street Capital COM 56035L104 26,697 2,570 10.65 1,028 0.00 0.4409
2022-05-06 2022-03-31 13F Main Street Capital COM 56035L104 24,127 1,242 5.43 1,028 0.19 0.3827
2022-02-01 2021-12-31 13F Main Street Capital COM 56035L104 22,885 -328 -1.41 1,026 7.55 0.3700
2021-10-22 2021-09-30 13F Main Street Capital COM 56035L104 23,213 80 0.35 954 0.42 0.3720
2021-07-28 2021-06-30 13F Main Street Capital COM 56035L104 23,133 300 1.31 950 6.38 0.3548
2021-05-04 2021-03-31 13F Main Street Capital COM 56035L104 22,833 1,995 9.57 893 32.89 0.3510
2021-02-09 2020-12-31 13F Main Street Capital COM 56035L104 20,838 566 2.79 672 12.19 0.2683
2020-10-22 2020-09-30 13F Main Street Capital COM 56035L104 20,272 5,705 39.16 599 32.23 0.2404
2020-08-06 2020-06-30 13F Main Street Capital COM 56035L104 14,567 98 0.68 453 53.04 0.1967
2020-04-29 2020-03-31 13F Main Street Capital COM 56035L104 14,469 3,003 26.19 296 -40.08 0.1494
2020-01-14 2019-12-31 13F MAIN STREET CAPITAL CORP COM COM 56035L104 11,466 1,105 10.66 494 10.51 0.2176
2019-10-28 2019-09-30 13F MAIN STREET CAPITAL CORP COM COM 56035L104 10,361 10,361 447 0.2082
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.