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NOTES TO THE FINANCIAL STATEMENTS For the financial year ended 31 December 2017 13. SHARE CAPITAL AND OTHER EQUITY (continued) 13.3 EMPLOYEE SHARE PURCHASE PLAN In June 2017, the Bank launched its twelfth offering of ESP Plan for Group employees, which commenced on 1 July 2017 and expire on 30 June 2019. Under the offering, the Bank granted 7,580,663 (2016: 10,644,475) rights to acquire ordinary shares in the Bank. There were 3,342 (2016: 4,260) rights granted to a director of the Bank. The fair value of rights, determined using the binomial valuation model was $5.5 million (2016: $9.2 million). Significant inputs to the valuation model are set out below: Acquisition price ($) Share price ($) Expected volatility based on last 250 days historical volatility as of acceptance date (%) Risk-free rate based on 2-year swap rate (%) Expected dividend yield (%) 2017 2016 10.77 10.72 13.06 1.26 3.36 8.45 8.45 20.66 0.99 4.26 Movements in the number of acquisition rights of the ESP Plan are as follows: 2017 Number of acquisition rights At 1 January Exercised and conversion upon expiry Forfeited Subscription At 31 December 15,662,202 (6,302,173) (2,356,609) 7,580,663 14,584,083 Average share price underlying acquisition rights exercised/converted 2016 Average price $9.106 $9.855 $9.545 $10.770 $9.576 $10.992 Number of acquisition rights 14,221,456 (26,443) (9,177,286) 10,644,475 15,662,202 Average price $9.814 $9.337 $9.443 $8.450 $9.106 $8.876 At 31 December 2017, the weighted average remaining contractual life of outstanding acquisition rights was 1.0 years (2016: 1.1 years). There were 7,602 (2016: 7,775) rights held by a director of the Bank. 13.4 DEFERRED SHARE PLAN Total awards of 5,761,209 (2016: 7,473,690) ordinary shares, which included 220,000 (2016: 318,541) ordinary shares to a director of the Bank, were granted to eligible executives under the DSP for the financial year ended 31 December 2017. The fair value of the shares at grant date was $54.9 million (2016: $66.9 million). During the year, 5,007,868 (2016: 4,350,930) deferred shares were released to employees, of which 271,875 (2016: 273,612) deferred shares were released to a director of the Bank who held office as at the end of the financial year. At 31 December 2017, a director of the Bank had deemed interest in 709,143 (2016: 738,024) deferred shares. The nature, general terms and conditions of Share Option Scheme, Employee Share Purchase Plan and Deferred Share Plan are provided in the Directors’ Statement and the Corporate Governance section of the Annual Report. The accounting treatment of share-based compensation plan is set out in Note 2.19.7. 186 OCBC ANNUAL REPORT 2017