(Sharecast News) - Speciality chemicals company Johnson Matthey was on the list of director buys on Tuesday, after one of its non-executive directors spent over £51k on shares.

The FTSE 250 firm said Jane Griffiths bought 2,500 shares on the London Stock Exchange on Friday.

Dr Griffiths paid 2,050.77p for each share, spending a total of £51,269.25 in the process.

On the selling side of the ledger, Kosmos Energy disclosed a sale worth almost $0.15m made by a director.

The company said Roy Franklin sold 20,732 shares on Monday, for a price of 710 US cents each.

That valued the transaction at a total of $147,197.20.

Reporting by Josh White at Sharecast.com.

Top Director Buys

Alphawave Ip Group (AWE)

Director name: Sutardja,Sehat

Amount purchased: 200,000 @ 152.73p

Value: £305,458.00

Enquest (ENQ)

Director name: Bseisu,Amjad

Amount purchased: 804,131 @ 29.00p

Value: £233,197.98

Enquest (ENQ)

Director name: Bseisu,Amjad

Amount purchased: 284,051 @ 28.80p

Value: £81,806.68

Biotech Growth Trust (the) (BIOG)

Director name: Yates,Roger

Amount purchased: 10,000 @ 777.64p

Value: £77,763.82

Johnson Matthey (JMAT)

Director name: Griffiths,Jane

Amount purchased: 2,500 @ 2,050.77p

Value: £51,269.25

Thungela Resources Limited Npv (di) (TGA)

Director name: Ntsaluba,Sango Siviwe

Amount purchased: 500 @ R$210.90

Value: R$20,758.29

Pensionbee Group (PBEE)

Director name: Oyesanya,Lara

Amount purchased: 11,673 @ 128.50p

Value: £14,999.80

Invesco Perpetual Uk Smaller Companies Inv Trust (IPU)

Director name: Prentis,Mike

Amount purchased: 2,959 @ 487.00p

Value: £14,410.33

Audioboom Group (BOOM)

Director name: Tobin,Michael

Amount purchased: 909 @ 1,095.00p

Value: £9,953.55

Invesco Perpetual Uk Smaller Companies Inv Trust (IPU)

Director name: Lewis,Jane

Amount purchased: 1,000 @ 489.00p

Value: £4,890.00

Oracle Power (ORCP)

Director name: Memon,Naheed

Amount purchased: 379,966 @ 0.31p

Value: £1,158.90

F&c Investment Trust (FCIT)

Director name: Hollond,Beatrice

Amount purchased: 121 @ 819.43p

Value: £991.51

Oracle Power (ORCP)

Director name: Migge,Andreas

Amount purchased: 75,993 @ 0.31p

Value: £231.78

Oracle Power (ORCP)

Director name: Hutchins ,David (Sam)

Amount purchased: 57,755 @ 0.31p

Value: £176.15

Brewin Dolphin Holdings (BRW)

Director name: Beer,Robin

Amount purchased: 32 @ 513.00p

Value: £164.16

Emis Group (EMIS)

Director name: Southby,Peter

Amount purchased: 11 @ 1,398.00p

Value: £153.78

Sthree (STEM)

Director name: Beach,Andrew

Amount purchased: 42 @ 360.40p

Value: £151.37

Centrica (CNA)

Director name: OÂ'Shea,Chris

Amount purchased: 185 @ 81.46p

Value: £150.70

Centrica (CNA)

Director name: Ringrose ,Kate

Amount purchased: 184 @ 81.46p

Value: £149.88

Superdry (SDRY)

Director name: Wills,Shaun

Amount purchased: 88 @ 169.90p

Value: £149.51

Rotork (ROR)

Director name: Davis,Jonathan

Amount purchased: 54 @ 275.41p

Value: £148.72

Oracle Power (ORCP)

Director name: Steed,Mark

Amount purchased: 43,316 @ 0.31p

Value: £132.11

Unilever (ULVR)

Director name: Pitkethly,Graeme

Amount purchased: 3 @ 3,602.00p

Value: £108.06

F&c Investment Trust (FCIT)

Director name: Knapp,Edward

Amount purchased: 12 @ 819.43p

Value: £98.33

Top Director Sells

Serco Group (SRP)

Director name: Soames,Rupert

Amount sold: 574,897 @ 182.29p

Value: £1,047,967.64

Caledonia Investments (CLDN)

Director name: Masters,Mathew

Amount sold: 3,724 @ 3,807.50p

Value: £141,791.30

Kosmos Energy (di) (KOS)

Director name: Franklin,Roy

Amount sold: 20,732 @ $7.10

Value: $121,379.73

Serco Group (SRP)

Director name: Crossley,Nigel

Amount sold: 50,911 @ 182.29p

Value: £92,804.59