Belgian Financier Albert Frere’s holding company, Groupe Bruxelles Lambert, bought a total of EUR57.55m worth of shares in  Lafarge between Sept. 2 and Sept. 5, according to filings Monday with stock market watchdog the AMF.

According to the filings, GBL bought EUR8.28m worth of shares at EUR82.78 a share Sept. 2, EUR8.51m worth at EUR85.095 a share Sept. 3, EUR16.53m worth at EUR82.65 a share Sept. 4 and EUR24.23m worth at EUR80.76 a share Sept. 5.

GBL also sold EUR500,869 worth of put options off the market Sept. 5, according to a separate filing with the AMF.