The company said its boss had bought 1,530 shares at DKK 9,418 each, for a total outlay of DKK 14.41m ($1.93m).
The stock was trading up 1.2% at DKK 15,180 on Thursday.
Andersen steered the giant Danish owner to record net earnings of $5.19bn in 2014, up from $3.77bn in the previous 12 months.
