NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - Continued Unum Group and Subsidiaries Note 11 - Stock-Based Compensation - Continued Expense Compensation expense for the stock plans, as reported in our consolidated statements of income, is as follows: Cash received under all share-based payment arrangements for the years ended December 31, 2020, 2019, and 2018 was $4.4 million, $6.1 million, and $4.6 million, respectively. Reinsurance activity related to both our premium income and changes in reserves for future benefits are as follows: Effective December 16, 2020, Provident Life and Accident Insurance Company, The Paul Revere Life Insurance Company and Unum Life Insurance Company of America, wholly-owned domestic insurance subsidiaries of Unum Group and collectively referred to as "the ceding companies", entered into a series of agreements (collectively referred to as the "reinsurance agreement") with Commonwealth Annuity and Life Insurance Company (Commonwealth), a subsidiary of Global Atlantic Financial Group, to reinsure on a coinsurance basis effective as of July 1, 2020 approximately 75 percent of the Closed Block individual disability business, primarily direct business written by the ceding companies. Commonwealth has established and will maintain collateralized trust accounts for the benefit of the ceding companies to secure its obligations under the relevant reinsurance agreement. As part of the agreement, additional Closed Block individual disability business consisting of direct business not ceded in December 2020 and business assumed by the ceding companies from third parties, is expected to be reinsured in the first quarter of 2021, subject to receipt of required consents and regulatory approvals and the satisfaction or waiver of other customary closing conditions and is considered the second phase of this transaction. In connection with the first phase of the coinsurance agreement that closed in December 2020, the ceding companies paid a total cash ceding commission to Commonwealth of approximately $438 million and transferred additional assets consisting primarily of fixed maturity securities and cash totaling $6,669.8 million. In December 2020, Provident Life and Casualty Insurance Company (PLC), also a wholly-owned domestic insurance subsidiary of Unum Group, entered into an agreement with Commonwealth whereby PLC will provide a 12-year volatility cover to 195 Year Ended December 31 2020 2019 2018 (in millions of dollars) Direct Premium Income $ 9,621.9  $ 9,576.3  $ 9,171.1  Reinsurance Assumed 94.1  116.5  142.6  Reinsurance Ceded (337.9) (327.2) (327.6) Net Premium Income $ 9,378.1  $ 9,365.6  $ 8,986.1  Ceded Benefits and Change in Reserves for Future Benefits $ 628.8  $ 650.1  $ 667.2  Year Ended December 31 2020 2019 2018 (in millions of dollars) Performance Share Units $ 5.6  $ 5.0  $ 6.8  Restricted Stock Units and Cash-Settled Restricted Stock Units 23.9  21.0  19.0  Stock Success Units 0.4  —  —  Other 0.5  0.6  0.5  Total Compensation Expense, Before Income Tax $ 30.4  $ 26.6  $ 26.3  Total Compensation Expense, Net of Income Tax $ 26.1  $ 22.7  $ 20.9  Note 12 - Reinsurance