Schedule 13G Name of issuer: Verastem Inc Title of class of securities: Common Stock Cusip: 92337C104 Date of event which requires filing: 12/31/15 Rule 13d-1(b) 1. Platinum Investment Management Limited 2. (b) 3. 4. Sydney Australia 5. Platinum Investment Management Limited 688,924 (1.9%) Note:Combined total of underlying managed funds 6. N/A 7. Platinum Investment Management Limited 688,924 (1.9%) Note:Combined total of underlying managed funds 8. N/A 9. 688,924 10. No 11. 1.9% 12. IA