(Sharecast News) - Ralf Wunderlich, a non-executive director of plastic and fibre products supplier Essentra, purchased 20,000 ordinary shares in the London-listed firm on Wednesday.Wunderlich, who was appointed to Essentra's board and its remuneration and nomination committee in July 2017, acquired the shares at an average cost of 472.20p each for a total value of £94,440.Just last week, Essentra revealed it had returned to profit growth as it unveiled a 7% rise in half-year pre-tax profits to £21m.Revenue fell to £513.1m from £522.6m, but was unchanged on a like-for-like basis, the company said.The interim dividend was held at 6.3p a share as Essentra reported margin growth in three of its four divisions.As of 1500 BST, Essentra shares had picked up 3.23% to 485.20p.Top Director BuysEssentra (ESNT)Director name: Wunderlich,Ralf K Amount purchased: 20,000 @ 472.20pValue: £94,440.00Standard Life Aberdeen (SLA)Director name: Devine,John Amount purchased: 15,422 @ 324.20pValue: £49,998.13Murray Income Trust (MUT)Director name: Tait,Peter Amount purchased: 2,000 @ 801.00pValue: £16,020.00Vertu Motors (VTU)Director name: Rich,MikeAmount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Anderson,KarenAmount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Forrester,RobertAmount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Aujla,JatinderAmount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Crane,DavidAmount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Taylor,ChrisAmount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Harrison,Ian Amount purchased: 3,543 @ 50.80pValue: £1,799.84Vertu Motors (VTU)Director name: Sherwin,MichaelAmount purchased: 3,543 @ 50.80pValue: £1,799.84Baillie Gifford Shin Nippon (BGS)Director name: Donaldson,Michael NeilAmount purchased: 750 @ 199.00pValue: £1,492.50Record (REC)Director name: Cullen,SteveAmount purchased: 2,018 @ 41.94pValue: £846.35Barr (a.g.) (BAG)Director name: White,Roger AlexanderAmount purchased: 23 @ 668.00pValue: £153.64Barr (a.g.) (BAG)Director name: Lorimer,StuartAmount purchased: 22 @ 668.00pValue: £146.96Barr (a.g.) (BAG)Director name: Memmott,Andrew LewisAmount purchased: 22 @ 668.00pValue: £146.96Barr (a.g.) (BAG)Director name: Kemp,Jonathan DavidAmount purchased: 22 @ 668.00pValue: £146.96Avon Rubber (AVON)Director name: Ingrey-Counter,MilesAmount purchased: 10 @ 1,450.00pValue: £145.00Avon Rubber (AVON)Director name: Keveth,Nick Amount purchased: 10 @ 1,450.00pValue: £145.00Ssp Group (SSPG)Director name: Swann,KateAmount purchased: 18 @ 690.70pValue: £124.33Ssp Group (SSPG)Director name: Davies,JonathanAmount purchased: 18 @ 690.70pValue: £124.33Top Director Sells