Edward Goldthorpe
Analyst · Ladenburg Thalmann
Thank you, operator, and welcome, everyone. Thank you for joining us. Yesterday afternoon, we reported our third quarter 2020 financial results. I am joined today by my CFO, Ted Gilpin; and my Chief Investment Officer, Patrick Schafer. Ted Gilpin will provide additional detail on our financial results, and Patrick will do the same on the investment portfolio.
I will begin by discussing Portman Ridge's performance for the third quarter and then speak more on the merger with Garrison Capital, which we closed on October 28. Overall, I am pleased to report that Portman Ridge had a solid quarter marked by a significant improvement in net realized and unrealized gains of $5.6 million across our entire portfolio. While we're clearly not out of the woods with respect to COVID, we experienced improved market sentiment during the quarter as portfolio companies began to gain a better sense of near-term financial visibility on their prospects. M&A and refinancing activity began to pick up after having been quiet in the prior quarter.
Net investment income per share was $0.06, consistent with the past 4 quarters, and the distribution level we have set for the past several quarters. Net asset per share was $2.85, an increase of 5% from the net asset value per share of $2.71 as of June 30, 2020. Driving this increase in net asset value per share was a broad-based strengthening of our portfolio due to market spreads tightening throughout the quarter.
M&A activity, which is a traditional source of middle-market direct loans, picked up substantially towards the end of the quarter. While still at depressed levels as compared to the last several years, we experienced buyers, sellers and lenders, all returning to market in an orderly fashion, and activity levels continue to pick up pace through the end of the quarter up to present day.
Turning now to our merger with Garrison Capital, which we first announced on June 24 and subsequently closed on October 28. We believe this merger is a truly transformational event for Portman Ridge as it represents the continued execution of our vision of the consolidation in the public BDC space. It is the third strategic transaction successfully closed by our team in less than 2 years. We are very excited about the benefits this merger brings to the combined company. First, the merger results in significant added scale and size, essentially doubling the size of the company. At closing, the combined company held total assets of approximately $638 million compared to Portman Ridge total assets of $300 million as of September 30. As a larger company, we expect to -- we expect immediate savings related to overhead and public company expenses on a per share basis, and in the longer term, increased trading liquidity of our common stock and the capability and flexibility to speak for larger deals.
Based on our previously discussed target leverage range of 1.25x to 1.4x, where we sit today, the pro forma Portman, we need to generate an approximately 9.5% to 10% return on its investment portfolio to cover our historical $0.06 per quarter distribution. Over the last 5 quarters, Portman has averaged 10.8% annual return on its investment portfolio despite the headwinds from LIBOR declining and reduced earnings from our CLO equity portfolio. Although these estimates are subject to change in the future, our historical ability to achieve returns on our investment portfolio in excess of what is required to sustain our distribution level should provide shareholders insight into earnings prospects going forward. Furthermore, we expect that leveraging the considerable resources, namely the access sourcing capabilities and industry expertise afforded by BC Partners across the entire platform, will be of significant benefits to all stakeholders of our combined company.
Integration and repositioning efforts are already underway. As of this call, we have already sold approximately $87 million of assets originated by Garrison at a slight premium to the fair value at the time of the merger. Pro forma for the Garrison merger and these asset sales, Portman's leverage on a net cash basis, i.e., after the use of cash on hand to pay down debt once the debt becomes callable, is approximately 1.4x or regulatory asset coverage of approximately 169%. We will continue to opportunistically sell assets as part of our repositioning strategy, but believe that we have significantly reduced market risk to our portfolio in a very short period of time. Over time, our goal is to maintain a portfolio of directly originated senior secured debt investments with a focus on first lien investments, and we look forward to updating you on our progress in future quarters.
With that, I will turn the call over to Ted Gilpin, our Chief Financial Officer, for a brief overview of the financial results; and then to Patrick Schafer, our Chief Investment Officer, for a review of our investment activity before concluding the call with some additional remarks. Ted?