What does Main Street Capital Corporation invest in?
Main Street Capital Corporation invests most often at Venture and Series A (83% of the rounds on record), in sectors such as Future Of Learning, E-learning and Consumer.

United States · Investor
Last cheque observed Jan 2015. Silence since then is not evidence of inactivity: our sources miss unannounced rounds.
Private equityQuiet
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7 rounds on record
Mostly Venture and Series A: 83% of its rounds
Sole investor in 7 rounds, median $14M
Main Street Capital, based in Houston, Texas, is a private debt and private equity firm that invests in lower and middle market private companies.From their own website
Every round we can evidence, newest first7 appearances
1 round
2 rounds
1 round
3 rounds
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
Named by the firm itself, on a filing, its Form ADV or its company registration4 named
We also hold 38 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
From the firm's own filings with the SEC, which it must file accurately by law
Funds on its Form ADV
2 private funds, $239M in gross assets · filed Nov 2024
From their own portfolio page (on their website)
Houston Business Journal
Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.
Main Street Capital Corporation invests most often at Venture and Series A (83% of the rounds on record), in sectors such as Future Of Learning, E-learning and Consumer.
7 investments on record, 0 of them in the last 12 months. The most recent was in Jan 2015.
The median round it joins is $14M. It says it writes cheques of $10M to $150M.
Rarely, if at all: none of its 7 investments on record names it as the lead.
Most of the companies it backs are in the United States (100%).
No investments in the last 12 months; the latest was in Jan 2015.
Main Street Capital Corporation is a private equity firm based in Houston, United States.
About $1.7B, as regulatory assets under management (Oct 2026).
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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it