(Sharecast News) - Rio Tinto was on the list of director purchases on Friday, after it disclosed an investment made by an independent non-executive director.

The mining giant said Susan Lloyd-Hurwitz picked up 486 shares on 17 August.

Lloyd-Hurwitz paid AUD 102.68 (£51.67) for each share, valuing the transaction at a total of AUD 49,902.48.

Elsewhere, Aterian made a disclosure to the market after one of its directors picked up three million shares.

The company said Charles Bray bought the 3,000,000 shares on 17 August, in a single transaction in London.

Bray paid 0.85p for each share, valuing the transaction at £25,500.

At 1629 BST, shares in Rio Tinto Group were down 0.74% at 4,601.5p, while those in Aterian were 1.84% higher at 0.942p.

Reporting by Josh White for Sharecast.com.

Top Director Buys

Conduit Holdings Limited Com Shs (di) (CRE)

Director name: Whelan,Elaine

Amount purchased: 22,265 @ 446.55p

Value: �99,424.80

Conduit Holdings Limited Com Shs (di) (CRE)

Director name: Carvey,Trevor

Amount purchased: 15,000 @ 449.00p

Value: �67,350.00

Rio Tinto (RIO)

Director name: Lloyd-Hurwitz,Susan

Amount purchased: 486 @ $102.68

Value: $26,413.23

Aterian (ATN)

Director name: Bray,Charles Grant

Amount purchased: 3,000,000 @ 0.85p

Value: �25,500.00

Weir Group (WEIR)

Director name: Stanton ,Jon

Amount purchased: 652 @ 1,787.50p

Value: �11,654.50

Everyman Media Group (EMAN)

Director name: Worsdell ,William (Will)

Amount purchased: 16,949 @ 59.00p

Value: �9,999.91

Wise Class A (WISE)

Director name: Duhon,Terri

Amount purchased: 1,347 @ 742.20p

Value: �9,997.43

Invesco Asia Trust (IAT)

Director name: Huen Rogerson,Sonya

Amount purchased: 2,900 @ 322.00p

Value: �9,338.00

Wood Group (john) (WG.)

Director name: Gilmartin ,Ken

Amount purchased: 4,129 @ 155.00p

Value: �6,399.95

Serinus Energy Npv (SENX)

Director name: Causgrove,James

Amount purchased: 250,000 @ 2.20p

Value: �5,500.00

Serinus Energy Npv (SENX)

Director name: Auld,Jeffrey

Amount purchased: 250,000 @ 2.10p

Value: �5,250.00

Coca-cola Hbc Ag (cdi) (CCH)

Director name: Bogdanovic,Zoran

Amount purchased: 194 @ 2,319.86p

Value: �4,489.09

Wood Group (john) (WG.)

Director name: Kemp,David

Amount purchased: 2,715 @ 155.00p

Value: �4,208.25

Cvc Income & Growth Limited Npv Euro (CVCE)

Director name: Gilbert,Esther

Amount purchased: 2,023 @ 98.85p

Value: �2,219.71

Audioboom Group (BOOM)

Director name: Last,Stuart

Amount purchased: 1,083 @ 183.50p

Value: �1,987.31

Coca-cola Hbc Ag (cdi) (CCH)

Director name: Bogdanovic,Zoran

Amount purchased: 79 @ 2,319.86p

Value: �1,843.55

Ncc Group (NCC)

Director name: Maddison ,Mike

Amount purchased: 619 @ 96.83p

Value: �599.40

Wise Class A (WISE)

Director name: Duhon,Terri

Amount purchased: 67 @ 742.21p

Value: �497.28

Johnson Matthey (JMAT)

Director name: Oxley,Stephen

Amount purchased: 24 @ 1,641.28p

Value: �393.91

Johnson Matthey (JMAT)

Director name: Condon,Liam

Amount purchased: 21 @ 1,641.28p

Value: �344.67

Wood Group (john) (WG.)

Director name: Kemp,David

Amount purchased: 97 @ 155.00p

Value: �150.35

Wood Group (john) (WG.)

Director name: Kemp,David

Amount purchased: 48 @ n/a

Value: n/a