(Sharecast News) - A person closely associated with BT non-executive director Matthew Key acquired 18,500 ordinary shares in the FTSE 100-listed firm on Monday.Karen Key purchased the shares at an average price of 204.70p, for a total value of £37,870.Four days before, BT posted a drop in revenue and just a slight uptick in full-year profit as a solid performance from the consumer business was offset by weakness in the enterprise segment.In the year to 31 March 2019, reported revenue nudged down 1% to £23.4bn while pre-tax profit edged 2% higher to £2.6bn. Reported earnings before interest, tax, depreciation and amortisation were down 2% at £7.4bn.The company left its full-year dividend unchanged at 15.4p a share.As of 1620 BST, BT shares had inched forward 0.33% to 205.99p.Top Director BuysZenith Energy LTD.Com Shs NPV (DI) (ZEN)Director name: Mr Andrea CattaneoAmount purchased: 455,000 @ 3.26pValue: £14,833 Air Partner (AIR)Director name: Mr Paul B DollmanAmount purchased: 44,000 @ 89.00pValue: £39,160 BT Group (BT.A)Director name: Mr Matthew KeyAmount purchased: 18,500 @ 204.70pValue: £37,870 Air Partner (AIR)Director name: Mr Edmond WarnerAmount purchased: 25,000 @ 92.00pValue: £23,000 Air Partner (AIR)Director name: Mr Edmond WarnerAmount purchased: 25,000 @ 88.50pValue: £22,125 Air Partner (AIR)Director name: Mr Edmond WarnerAmount purchased: 25,000 @ 88.00pValue: £22,000 Vivo Energy (VVO)Director name: Mr Gawad AbazaAmount purchased: 10,000 @ 124.40pValue: £12,440