The deal, under which TIP and the Achermann family will sell an overall 43.21% holding in BE to Engineering at a price of 3.45 euros per share ($3.63), was announced in February.

It is aimed at the de-listing of Be following a takeover bid on the remaining shares Engineering will be obliged to launch.

Engineering Ingegneria Informatica, active in the information and communications technology field, is owned by private equity fund Bain Capital and investment fund NB Renaissance Partners.

"The competences in IT digital consulting and the customer base of Be complement the capabilities, the commercial presence and the digital technologies' know-how of Engineering," said Fabio Cané, Senior Partner of NB Renaissance.

By 1015 GMT, Be shares were up 5.97%, outperforming a 0.6% rise in Milan's all-share index, while Tamburi was trading down 0.3%.

($1 = 0.9494 euros)

(Reporting by Federico Maccioni, editing by Agnieszka Flak)