We also hold passive non-controlling interests in certain unconsolidated entities that are considered VIEs. We are not the primary beneficiaries of these VIEs as we do not possess the power to direct the activities of the VIEs that most significantly impact their economic performance and therefore report our interests, which totaled $90.5 million as of September 30, 2019, within investment in unconsolidated entities on our condensed consolidated balance sheet. Our maximum risk of loss is limited to our carrying value of the investments.
15. Related-Party Transactions
Management Agreement
We are party to a management agreement (the “Management Agreement”) with our Manager. Under the Management Agreement, our Manager, subject to the oversight of our board of directors, is required to manage our day to day activities, for which our Manager receives a base management fee and is eligible for an incentive fee and stock awards. Our Manager’s personnel perform certain due diligence, legal, management and other services that outside professionals or consultants would otherwise perform. As such, in accordance with the terms of our Management Agreement, our Manager is paid or reimbursed for the documented costs of performing such tasks, provided that such costs and reimbursements are in amounts no greater than those which would be payable to outside professionals or consultants engaged to perform such services pursuant to agreements negotiated on an arm’s-length basis. Refer to Note 16 to the consolidated financial statements included in our Form 10-K for further discussion of this agreement.
Base Management Fee. For the three months ended September 30, 2019 and 2018, approximately $19.2 million and $18.4 million, respectively, was incurred for base management fees. For the nine months ended September 30, 2019 and 2018, approximately $57.7 million and $53.9 million, respectively, was incurred for base management fees. As of both September 30, 2019 and December 31, 2018, there were $19.2 million of unpaid base management fees included in related-party payable in our condensed consolidated balance sheets.
Incentive Fee. For the three months ended September 30, 2019 and 2018, approximately $1.8 million and $4.3 million, respectively, was incurred for incentive fees. For the nine months ended September 30, 2019 and 2018, approximately $2.0 million and $19.6 million, respectively, was incurred for incentive fees. As of September 30, 2019 and December 31, 2018, there were $1.8 million and $21.8 million, respectively, of unpaid incentive fees included in related-party payable in our condensed consolidated balance sheets.
Expense Reimbursement. For both the three months ended September 30, 2019 and 2018, approximately $1.9 million was incurred for executive compensation and other reimbursable expenses and recognized within general and administrative expenses in our condensed consolidated statements of operations. For the nine months ended September 30, 2019 and 2018, approximately $5.8 million and $5.9 million, respectively, was incurred for executive compensation and other reimbursable expenses. As of September 30, 2019 and December 31, 2018, approximately $3.4 million and $3.0 million, respectively, of unpaid reimbursable executive compensation and other expenses were included in related-party payable in our condensed consolidated balance sheets.
Equity Awards. In certain instances, we issue RSAs to certain employees of affiliates of our Manager who perform services for us. During the three months ended September 30, 2019 and 2018, there were no RSAs granted. Expenses related to the vesting of awards to employees of affiliates of our Manager were $1.2 million and $0.8 million during the three months ended September 30, 2019 and 2018, respectively, and are reflected in general and administrative expenses in our condensed consolidated statements of operations. During the nine months ended September 30, 2019 and 2018, we granted 182,861 and 189,813 RSAs, respectively, at grant date fair values of $4.1 million and $4.0 million, respectively. Expenses related to the vesting of awards to employees of affiliates of our Manager were $3.0 million and $2.1 million during the nine months ended September 30, 2019 and 2018, respectively. These shares generally vest over a three-year period.