X0306 4 2014-09-10 0 0001419600 Flexion Therapeutics Inc FLXN 0001456586 Versant Venture Capital III, L.P. 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001456587 Versant Ventures III, LLC 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001456585 Versant Side Fund III, L.P. 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001266567 ATWOOD BRIAN G 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001201580 COLELLA SAMUEL D 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001181338 JAFFE ROSS A MD 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001228684 LINK WILLIAM J PHD 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001279660 MILDER DONALD B 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001279592 LUBASH BARBARA N 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 0001201585 ROBERTSON REBECCA B 3000 SAND HILL ROAD, STE 4-210 MENLO PARK CA 94025 1 0 1 0 Common Stock 2014-09-10 4 X 0 2250 17.61 A 2250 I see footnote Stock Option (right to buy) 17.61 2014-09-10 4 X 0 2250 0.00 D 2014-03-03 2014-09-11 Common Stock 2250 6750 I see footnote The shares are held by Bradley J. Bolzon. Each of the other reporting persons disclaims beneficial ownership of these shares. These derivative securities were subject to vesting and forfeiture following the departure of one of the reporting persons, Bradley J. Bolzon, from the board of directors of the issuer. /s/ Robin L. Praeger 2014-09-12