Main Street Capital Corp is a principal investment firm focused on providing customized long-term debt and equity capital solutions to lower middle market ("LMM") companies and debt capital to private ("Private Loan") companies owned by or in the process of being acquired by a private equity fund. The group invests principally in secured debt investments, equity investments, warrants, and other securities of LMM companies, typically based in the U.S. The company operates as a single segment with a principal investment objective to maximize total return by generating current income from debt investments and current income and capital appreciation from equity and equity-related investments.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 2 | 2,550 | $151K |
| Open-market sale | 2 | 41,830 | $2.40M |
| Other acquisition / disposition | 58 | 11,003 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
179 Form 4 filings on record, the earliest from Oct 17, 2024, newest first. Filing history page 2 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Other | Common Stock | 88.01 | $57.83 | $5K | ||
| Grant or award | Common Stock | 538 | $0.00 | - | ||
| Grant or award | Common Stock | 1,435 | $55.76 | $80K | ||
| Other | Common Stock | 98.72 | $56.38 | $6K | ||
| Other | Common Stock | 91.75 | $54.89 | $5K | ||
| Other | Common Stock | 113.31 | $51.53 | $6K | ||
| Stephen B. Solcher | Other | Common Stock | 186.21 | $54.89 | $10K | |
| Stephen B. Solcher | Other | Common Stock | 229.95 | $51.53 | $12K | |
| Other | Common Stock | 417 | $54.66 | $23K | ||
| Other | Common Stock | 499.34 | $52.92 | $26K | ||
| Grant or award | Common Stock | 81,609 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 29,202 | $52.96 | $1.55M | ||
| Brian E. Lane | Other | Common Stock | 63.41 | $54.66 | $3K | |
| Brian E. Lane | Other | Common Stock | 168.1 | $54.89 | $9K | |
| Brian E. Lane | Other | Common Stock | 75.93 | $52.92 | $4K | |
| Brian E. Lane | Other | Common Stock | 207.58 | $51.53 | $11K | |
| Other | Common Stock | 100.8 | $54.66 | $6K | ||
| Other | Common Stock | 120.7 | $52.92 | $6K | ||
| Grant or award | Common Stock | 33,550 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 13,004 | $52.96 | $689K | ||
| Jon Kevin Griffin | Other | Common Stock | 20.53 | $54.66 | $1K | |
| Jon Kevin Griffin | Other | Common Stock | 228.31 | $54.89 | $13K | |
| Jon Kevin Griffin | Other | Common Stock | 24.58 | $52.92 | $1K | |
| Jon Kevin Griffin | Other | Common Stock | 281.94 | $51.53 | $15K | |
| John Earl Jackson | Other | Common Stock | 87.26 | $54.66 | $5K | |
| John Earl Jackson | Other | Common Stock | 222.46 | $54.89 | $12K | |
| John Earl Jackson | Other | Common Stock | 104.49 | $52.92 | $6K | |
| John Earl Jackson | Other | Common Stock | 274.72 | $51.53 | $14K | |
| John Earl Jackson | Other | Common Stock | 9 | $55.08 | $496 | |
| Vincent D. Foster | Other | Common Stock | 13.24 | $54.66 | $724 | |
| Vincent D. Foster | Other | Common Stock | 1,414 | $54.66 | $77K | |
| Vincent D. Foster | Other | Common Stock | 15.85 | $52.92 | $839 | |
| Vincent D. Foster | Other | Common Stock | 1,693 | $52.92 | $90K | |
| Nicholas Meserve - Officer | Grant or award | Common Stock | 21,762 | $0.00 | - | |
| Nicholas Meserve - Officer | Tax withholding / forfeiture | Common Stock | 7,700 | $52.96 | $408K | |
| Ryan Robert Nelson - Officer | Grant or award | Common Stock | 13,602 | $0.00 | - | |
| Ryan Robert Nelson - Officer | Tax withholding / forfeiture | Common Stock | 2,352 | $52.96 | $125K | |
| Ryan McHugh - Officer | Other | Common Stock | 22.66 | $54.66 | $1K | |
| Ryan McHugh - Officer | Other | Common Stock | 26.18 | $54.66 | $1K | |
| Ryan McHugh - Officer | Other | Common Stock | 27.13 | $52.92 | $1K | |
| Ryan McHugh - Officer | Other | Common Stock | 31.35 | $52.92 | $2K | |
| Ryan McHugh - Officer | Grant or award | Common Stock | 7,254 | $0.00 | - | |
| Ryan McHugh - Officer | Tax withholding / forfeiture | Common Stock | 780 | $52.96 | $41K | |
| Grant or award | Common Stock | 54,406 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 22,536 | $52.96 | $1.19M | ||
| Other | Common Stock | 62.49 | $54.88 | $3K | ||
| Other | Common Stock | 59.08 | $54.66 | $3K | ||
| Other | Common Stock | 70.75 | $52.92 | $4K | ||
| Grant or award | Common Stock | 58,940 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 23,596 | $52.96 | $1.25M | ||
| Other | Common Stock | 84.36 | $59.44 | $5K | ||
| Jon Kevin Griffin | Other | Common Stock | 18.35 | $60.89 | $1K | |
| Jon Kevin Griffin | Other | Common Stock | 209.91 | $59.44 | $12K | |
| Stephen B. Solcher | Other | Common Stock | 171.21 | $59.44 | $10K | |
| Ryan McHugh - Officer | Other | Common Stock | 18.61 | $60.89 | $1K | |
| Ryan McHugh - Officer | Other | Common Stock | 23.4 | $60.89 | $1K | |
| Brian E. Lane | Other | Common Stock | 56.68 | $60.89 | $3K | |
| Brian E. Lane | Other | Common Stock | 154.55 | $59.44 | $9K | |
| Other | Common Stock | 372.75 | $60.89 | $23K | ||
| Other | Common Stock | 57.31 | $59.58 | $3K | ||
| Other | Common Stock | 52.81 | $60.89 | $3K | ||
| Other | Common Stock | 102.81 | $60.89 | $6K | ||
| John Earl Jackson | Other | Common Stock | 78 | $60.89 | $5K | |
| John Earl Jackson | Other | Common Stock | 204.54 | $59.44 | $12K | |
| John Earl Jackson | Other | Common Stock | 8 | $59.98 | $480 | |
| Vincent D. Foster | Other | Common Stock | 11.84 | $60.89 | $721 | |
| Vincent D. Foster | Other | Common Stock | 1,264 | $60.89 | $77K | |
| Brian E. Lane | Other | Common Stock | 55.2 | $62.27 | $3K | |
| Brian E. Lane | Other | Common Stock | 142.52 | $64.20 | $9K | |
| Jon Kevin Griffin | Other | Common Stock | 17.87 | $62.27 | $1K | |
| Jon Kevin Griffin | Other | Common Stock | 193.57 | $64.20 | $12K | |
| John Earl Jackson | Other | Common Stock | 75.95 | $62.27 | $5K | |
| John Earl Jackson | Other | Common Stock | 188.61 | $64.20 | $12K | |
| John Earl Jackson | Other | Common Stock | 8 | $62.90 | $503 | |
| Ryan McHugh - Officer | Other | Common Stock | 18.13 | $62.27 | $1K | |
| Ryan McHugh - Officer | Other | Common Stock | 22.79 | $62.27 | $1K | |
| Vincent D. Foster | Other | Common Stock | 11.53 | $62.27 | $718 | |
| Vincent D. Foster | Other | Common Stock | 1,231 | $62.27 | $77K |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Jesse E. Morris | Officer | 35,000 | $2.04M | View on EDGAR | |
| - | - | - | - | View on EDGAR |
Main Street Capital CORP (MAIN) had 12 insider filings in the last 90 days, with the most recent on 2026-08-24. The full record for MAIN runs to 179 Form 4 filings, the earliest from 2024-10-17. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
2 insider purchases of MAIN were filed in the last 90 days, totaling $151K.
2 insider sales of MAIN were filed in the last 90 days, totaling $2.40M.
This page tracks MAIN Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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