Well, Mike, thanks very much for that, and good morning, everybody, on the call. Usually, I try to just give a very brief reminder or recap, so to speak, of what it is we do here at Gladstone Investment.
And of course, as everyone knows, we are a publicly traded fund. We are focused on buying businesses, generally U.S. businesses, with annual sales anywhere from roughly $20 million to $100 million. We structure our deals in these buyouts to usually consist of secured first and second lien debt and in a combination with the direct equity investment, because that is where we generate and have our significant ownership position and, ultimately, capital gains. So this combination of using debt and equity does produce a mix of assets, which is really the basis of our investment strategy for Gladstone Investment, whereby the debt portion of the investments provide the income to pay and grow our monthly distributions, and at the same time, we look to the equity portion, of course, to increase in value and provide the capital gains over time. And we'll be able to chat some more about that.
So we might ask how are we different from other BDCs or other typical finance-type companies like us, and basically, one very significant difference with us and other BDCs is that we take significant equity positions in the companies that we invest in. And this differs from other public BDCs, generally, that are predominantly debt-focused, and usually those are referred to as credit-oriented BDCs. So for instance, where the proportion of equity to debt for the investments in our portfolio is approximately 25:75 ratio, you'll find that most of the "credit-oriented BDCs", in their portfolio, they'll typically be at around 10%:90% or 10:90 ratio of equity to debt. And as to other sort of private equity funds that are typical buyout funds, usually, they are 10-year type private partnerships with a long-term liquidity horizon for their investors. We differ basically in that as a publicly traded entity, our structure allows for the daily liquidity, so to speak, for our shareholders who are then able to participate in this middle-market buyout business through our structure without being necessarily locked up for at least 10 years.
Now let's talk about exit strategies, because realizing capital gains through our portfolio company exits is definitely a component of the value proposition of an investment in our fund. And I do want our shareholders to know that this is an important part of our business planning, and we will be selling or exiting companies from time to time. These activities generally are based on market conditions, obviously, and, to some extent, an assessment that we make of the risk return in, for instance, continuing to hold an investment, even performing well, versus perhaps exiting that investment. So we're trying to assess the benefit, if you will, of taking a gain versus potentially keeping and holding that investment. And of course, some of that is a function, again, of the market. Now in this regard, we are actually expecting to close on the sale of one of our portfolio companies within the next few days. I'm not able to say much more about that, but I will say that it will produce a sizable capital gain on equity and we'll also receive back the repayment of all our debt. So we'll have total cash proceeds of a pretty significant amount.
Now during the quarter ended September, we also exited the remaining investment we had in Cavert II Holding. This was where we had a remaining preferred equity investment. It was redeemed at par, roughly $3.4 million, and we also received dividend income on that preferred accrued of approximately $1.5 million. Additionally, we sold the assets of NDLI, which was one of our investments. We sold it to a company called Diligent Delivery Systems. The total proceeds on that one was roughly just under $15 million, which consisted of about $2 million in cash and a secured second lien note of about $13 million with warrants to purchase common stock. So by selling these assets of NDLI to a somewhat similar business, well-managed business, we have continued with an investment, however, we've been able to exit that investment today. So therefore, since June of 2010, which still including these actual exits and, of course, not the aforementioned expected sale, we will have exited 6 of our management-supported buyout investments, generated roughly $52 million in net realized capital gains and a roughly $14.6 million in other income associated with those transactions. We also, I should tell you, are currently in the process of a few other possible sales, which could occur over the next several months. And obviously, we will have to chat more about that as we move further into our calendar year of 2016.
I just always like to caution that the buyout market is, obviously, still somewhat, I would say, seller-friendly. So we have to keep in mind that whenever we do sell a portfolio company for the right reasons and good reasons, it will and potentially could reduce our income-producing asset base, and then we are going to have to be, obviously, working very hard and we'll be challenged incrementally to replace that investment as we generate current income as well.
So let's turn to deal generation because that impacts how we do that. We have a very high priority of our deal-generation activities, and that has resulted, obviously, in our continuing growth in new buyouts and income-producing assets. We do this with a very broad and deep geographic footprint, which we have offices in New York City, Los Angeles, Chicago and, of course, here in McLean, which, as David Gladstone mentioned, just outside Washington, D.C. Now to generate these new investment opportunities, we have to primarily call on what we refer to as independent sponsors, other middle-market investment bankers, folks that will find deals that we would be interested in acquiring, and other sources that might create and help create proprietary investment opportunities. We do not depend on others to negotiate or structure our investments.
Generally, though, our investments, of course, do include partnering with the management teams of those companies and to the extent that there are other sponsors, such as independent sponsors who may be working with us to purchase the business. And again, our strategy, which is providing a package, a financing package, which includes both a secured debt and the majority equity investment, is a very competitive advantage as it gives the seller and the sponsor, independent sponsors, say, if one is involved, and the management team that we'll be working with, a very high degree of comfort that at least from a financing perspective, that purchase will occur. In addition, from time to time, we might do an outright purchase where we occasionally will find an opportunity to partner with, say, a business owner who's not actually selling the whole business, but maybe a portion of the business, and then -- and use our capital to continue growing the business.
Where do we focus? Well, we generally invest in companies, as I said before, with revenues $20 million to $100 million, but also more, as importantly, with consistent operating cash flow, and generally, at least, around $3 million annually and ability, of course, to expand and grow that cash flow. Areas of interest that we look at and historically have done are light specialty manufacturing, specialty consumer products and services, industrial products and services and the aerospace and energy area. Now I should note that historically, we -- and is -- energy, we historically have had minimum exposure here, and we do look at that on an opportunistic basis. Currently, we do not really have any major exposure to the energy sector.
Our secured debt investments, which are primarily first lien loans, typically carry a cash yield that are in the sort of mid to high teens, and that balances the equity portion of our investments, which, thereby, produce a blended current cash yield which supports our shareholder distribution expectations. We generally also have a success fee on these loans, which are paid in cash on a change of control or, in some cases, in advance at the portfolio company's option. As to the equity portion, when we model out a potential opportunity, we always target an equity portion that will have a return somewhere in the 2 to 3x cash-on-cash return. We believe with what we've been doing, that there is a positive origination trend as we continue through our third quarter fiscal 2016. We are currently in various stages of diligence on a few new investments, and we would hope and expect to close somewhere in the upcoming quarter. So we continue expanding our marketing efforts, and we're definitely continuing to grow our presence in the marketplace.
So just take a quick look at our activity over this past quarter and how we've done. Well, we invested $20.9 million in a new deal. We received, as I mentioned earlier, $13 million new debt investment, which had -- included warrants to purchase common stock. And as a result of the aforementioned sale of the -- of that portfolio company, we also invested in incremental $1.8 million into existing portfolio companies. Specifically, in July, we purchased GI Plastek, Inc. with a $20.9 million investment in a combination of secured first lien and equity. GI Plastek, which is headquartered in Wolfeboro, New Hampshire, is a leading manufacturer of medium to large customized plastic injection molding products for various end markets and, generally, nonautomotive. In August, as I mentioned, the assets of NDLI Inc. were acquired by Diligent Delivery Systems, and as previously mentioned, we received consideration of roughly $15 million. This transaction did result in a current net realized loss of about $2.7 million, but we do retain, of course, as I mentioned, an income-producing asset as well as warrants, which will allow us to acquire common equity in Diligent in the future and could, indeed, turn into a positive. In September, we did, as I mentioned as well, sold the remaining preferred stock in Cavert II Holdings, which was redeemed actually at par and generated dividend income of $1.5 million.
So with all of that, the outlook I would say is -- and our goal is to continue to strategically add accretive investments, position our existing portfolio for potential exits and, therefore, maximizing distributions to shareholders with a solid growth in both equity and the income portion of our assets.
So with all of that, I'm going to conclude my part of the presentation and turn it over to Melissa Morrison, who's our acting Principal Financial Officer, and she'll go into a bit more detail on that performance.