Prior to the Organizational Transactions and IPO, the Company had 260,000,000 Redeemable Preferred Units issued and outstanding, which was unchanged from December 31, 2020.

As defined in the related purchase agreements with Onex (the “Onex Purchase Agreements”), the Company had the option, but not the requirement, to repurchase up to 100% of the 260,000,000 Redeemable Preferred Units issued to Onex at any time. If the option was exercised before the fifth anniversary of each issuance, the redemption price would be subject to a make-whole provision set forth in the terms of the Onex Purchase Agreements. Onex had the right to cause the Company to repurchase up to 100% of the Redeemable Preferred Units after the tenth anniversary of each issuance for any unpaid preferred return and unreturned capital. Additionally, the Onex Purchase Agreements required a redemption (“Mandatory Redemption”) of the Redeemable Preferred Units upon the occurrence of a realization event, which, as defined, includes a Qualified Public Offering. Where a Mandatory Redemption was required prior to the fifth anniversary of an issuance, the redemption price was subject to a make-whole provision.

The Company determined that the Mandatory Redemption feature must be accounted for separately from the Redeemable Preferred Units par value as a derivative liability in accordance with ASC 815 Derivatives and Hedging. These embedded derivatives were accounted for on a combined basis separately from the Redeemable Preferred Units and were recorded at fair value. As the put option exercisable after the tenth anniversary of the issuance was at the option of the unitholder, but was not mandatorily redeemable, the Redeemable Preferred Units were classified as mezzanine equity and were initially recognized at relative fair value.

The difference between the redemption value of the Redeemable Preferred Units and the carrying value was intended to accrete over the ten year period from the date of issuance using the effective interest method. The accretion was treated as a deemed dividend and was recorded as a charge to retained earnings. The cumulative accretion immediately prior to the IPO and as of December 31, 2020 was $23.9 million and $3.6 million, respectively, resulting in adjusted Redeemable Preferred Unit carrying values of $260.0 million and $239.6 million, respectively. Dividend payments on the Redeemable Preferred Units were accrued and deferred at the option of the Board of Directors. Unpaid preferred dividends of $16.2 million and $9.5 million were recorded in Accounts payable and accrued liabilities immediately prior to the IPO and as of December 31, 2020, respectively. As the Company's IPO in July 2021 was a realization event triggering the payment to Onex of the make-whole provision, any unpaid preferred dividends, and the unpaid capital, resulted in no amounts outstanding related to these balances in the Consolidated Balance Sheets as of September 30, 2021. The Company paid $7.0 million and $6.4 million of preferred dividends inclusive of state tax payments and distributions to Onex in the nine months ended September 30, 2021 and the year ended December 31, 2020, respectively.

The fair value of the Redeemable Preferred Unit make-whole provisions immediately prior to the IPO was $67.3 million, and $0.0 million and $30.4 million at September 30, 2021 and December 31, 2020, respectively. Refer to Note 17, Fair Value Measurements.