Feb 10 (Reuters) - Emerson Electric ( EMR ) said on Monday that its $265 per-share offer

to acquire Aspen Technology ( AZPN ) was its "best and final" price.

The announcement comes days after activist investor Elliott Management said it invested over

$1.5 billion in Aspen, opposing the company's decision to accept Emerson's $7.2 billion tender

offer.

"Our break price is ~$202 ,

making it less obvious as a bump play and resting it on a view that Emerson would not want to

risk tender failure," UBS analysts said in a note.

Emerson, which owns 57% of Aspen, agreed last month to acquire the remaining shares in the

industrial software supplier.

The all-cash tender offer is set to expire on March 10, assuming the minimum required number

of shares are tendered.