transactions, we sold 80% of our ownership interests in the related MOAs to Stone Ridge Trust V in exchange for approximately $8.0 million, $7.8 million, and $8.0 million, respectively. For more information about these transactions, see Note 3 to our consolidated financial statements.
In addition, Stone Ridge Trust V and certain affiliated entities also contributed approximately $262.3 million, $100.1 million, and $137.3 million and $45.3 million in loans as collateral in private offering securitization transactions that we sponsored and serviced in 2017, 2018, and 2019 and the nine months ended September 30, 2020, respectively. In connection with these contributions, Stone Ridge Trust V and certain affiliated entities received approximately $62.8 million in asset-backed securities in 2017 and cash payments of $202.5 million, $100.1 million, and $138.5 million and $45.6 million in 2017, 2018 and 2019, and the nine months ended September 30, 2020, respectively.
As of December 31, 2018, and 2019, and September 30, 2020, the balance of payable to securitization note holders and residual certificate holders due to Stone Ridge Trust V and certain affiliated entities was $22.4 million, $0 and $0, respectively.
Servicing Fees
We are the servicer of certain loans purchased and held by Stone Ridge Trust V and certain affiliated entities. In 2017, 2018, and 2019 and the nine months ended September 30, 2020, we received servicing fees in the amount of $1.4 million, $2.1 million, and $2.3 million and $1.1 million, respectively, from Stone Ridge Trust V and certain affiliated entities.
Transactions with Third Point and Affiliated Entities
Convertible Promissory Note
In September 2017, we issued a subordinated convertible promissory note to Third Point Ventures LLC. The note had an aggregate principal amount of $10.0 million, an interest rate of 8% per annum and a maturity date of June 30, 2018. On June 30, 2018, the outstanding principal and accrued and unpaid interest of $10.6 million on the note was converted into 2,938,725 shares of Series C-1 convertible preferred stock at a per share price of $3.612, equal to the issue price in the Series C-1 financing round.
Warrants
In September 2017, we issued a preferred stock purchase warrant to Third Point Ventures LLC in connection with the convertible promissory notes described above. The warrant entitled Third Point Ventures LLC to purchase up to 415,234 shares of Series C-1 preferred stock for a total of $1.5 million. On June 30, 2018, the warrant was cancelled when the convertible promissory note converted into shares of Series C-1 convertible preferred stock.
Pass-Through Certificates
Certain entities affiliated with Third Point purchased approximately $219.4 million, and $454.0 million and $199.9 million in pass-through certificates backed by Upstart-powered loans in 2018, and 2019 and the nine months ended September 30, 2020, respectively, from a series trust affiliated with Jefferies LLC.
Securitization Transactions
In 2017 and 2018, certain entities affiliated with Third Point purchased approximately $9.8 million and $66.1 million of asset-backed securities, respectively, in private offering securitization transactions that we sponsored and serviced.
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