Mang acquired the shares through a deal on the Bulgarian Stock Exchange on Wednesday, M+S Hydraulic said in a bourse filing.
The 300 shares are equal to a 0.00076% stake in M+S Hydraulic.
On Tuesday, Mang acquired 2,474 shares in the company at a price of 6.10 levs apiece.
At the end of June, Mang held 80,506 shares in M+S Hydraulic.
As at 10:45 CET on Thursday, M+S Hydraulic shares traded 0.79% lower at 6.25 levs on the Bulgarian Stock Exchange.
(1 euro = 1.95583 levs)