(ShareCast News) - Octagonal's non-executive director Martin Davison bought a total of 3.3m shares in the investment company via his pension fund.Davison purchased 3m at 1.2p each last Friday and 265,000 at 0.95p each last Monday, bringing his total holding to 10.8m, or a 1.92% stake.Meanwhile, Fulcrum Utility Services' chief financial officer Martin Harrison sold 128,000 shares in the independent energy and multi-utility services provider at 28p each on Monday.He now holds a beneficial interest in 208,538 shares, representing around 0.1% of the company's issued share capital.Top Director Buys Canadian Overseas Petroleum Limited (DI) (COPL)Director name: Mr Arthur S MillhollandAmount purchased: 1,122,000 @ 3.09pValue: £34,670 Electra Private Equity (ELTA)Director name: Mr Roger PerkinAmount purchased: 2,074 @ 2,025.00pValue: £41,998 Octagonal (OCT)Director name: Mr Martin David DavisonAmount purchased: 3,000,000 @ 1.20pValue: £36,000 Top Director Sells Fulcrum Utility Services Ltd. (DI) (FCRM)Director name: Mr Martin HarrisonAmount sold: 128,000 @ 28.00pValue: £35,840